wikitags: totals

abs rel
Human activities 232 65.4%
Natural environment 158 44.5%
Sustainability 147 41.4%
Nature 145 40.8%
Agriculture 137 38.6%
Economy 124 34.9%
Risk 119 33.5%
Water 112 31.5%
Greenhouse gas 101 28.5%
Climate change 93 26.2%
Food 91 25.6%
Health 91 25.6%
Technology 90 25.4%
Climate change mitigation 83 23.4%
Biodiversity 81 22.8%
Research 80 22.5%
Air pollution 79 22.3%
Waste 71 20.0%
Pollution 66 18.6%
Renewable energy 66 18.6%
Infrastructure 64 18.0%
Innovation 64 18.0%
Ecology 62 17.5%
Safety 60 16.9%
Transport 59 16.6%
Climate resilience 58 16.3%
Environmental science 57 16.1%
Ecosystem 54 15.2%
Efficient energy use 53 14.9%
Natural gas 52 14.6%
Environmental social science 51 14.4%
Chemistry 50 14.1%
Earth sciences 49 13.8%
Governance 49 13.8%
Employment 48 13.5%
Risk assessment 48 13.5%
Hazard 47 13.2%
Regulatory compliance 47 13.2%
Tax 46 13.0%
Soil 45 12.7%
Sustainable Development Goals 45 12.7%
Conservation biology 44 12.4%
Food security 43 12.1%
Risk management 42 11.8%
Occupational safety and health 41 11.5%
Carbon dioxide 40 11.3%
Economic growth 40 11.3%
Environmental technology 40 11.3%
Livestock 40 11.3%
Fertilizer 38 10.7%
Recycling 38 10.7%
Construction 37 10.4%
Water resources 37 10.4%
Energy 36 10.1%
Forest 36 10.1%
Poverty 36 10.1%
Sustainable development 36 10.1%
Environmental impact assessment 35 9.9%
Greenhouse gas emissions 35 9.9%
Low-carbon economy 35 9.9%
Climate change adaptation 34 9.6%
Ecological resilience 34 9.6%
Emergency management 34 9.6%
Biofuel 33 9.3%
Ecosystem service 33 9.3%
Flood 33 9.3%
Physical sciences 33 9.3%
Fuel 32 9.0%
Human impact on the environment 32 9.0%
Electric vehicle 31 8.7%
Toxicity 31 8.7%
Circular economy 30 8.5%
Global warming 30 8.5%
Policy 30 8.5%
Waste management 30 8.5%
Emissions trading 29 8.2%
Environment 29 8.2%
European Green Deal 29 8.2%
Sewage treatment 29 8.2%
United Nations Framework Convention on Climate Change 29 8.2%
Wetland 29 8.2%
Biomass 28 7.9%
Energy conservation 28 7.9%
Evaluation 28 7.9%
Forestry 28 7.9%
World energy consumption 28 7.9%
Food industry 27 7.6%
Public transport 27 7.6%
Sustainable energy 27 7.6%
Hazardous waste 26 7.3%
Inspection 26 7.3%
Irrigation 26 7.3%
Management 26 7.3%
Paris Agreement 26 7.3%
Reclaimed water 26 7.3%
Wildfire 26 7.3%
Business 25 7.0%
Engineering 25 7.0%
Illegal, unreported and unregulated fishing 25 7.0%
Life-cycle assessment 25 7.0%
Natural resource 25 7.0%
Natural resources 25 7.0%
Aquaculture 24 6.8%
Energy development 24 6.8%
Particulates 24 6.8%
Physical geography 24 6.8%
Protected area 24 6.8%
Food and drink 23 6.5%
Green infrastructure 23 6.5%
Groundwater 23 6.5%
Nature conservation 23 6.5%
Pesticide 23 6.5%
Science 23 6.5%
Subsidy 23 6.5%
Sustainable transport 23 6.5%
Water pollution 23 6.5%
Artificial objects 22 6.2%
Climate 22 6.2%
Common Fisheries Policy 22 6.2%
Drinking water 22 6.2%
Economics 22 6.2%
Education 22 6.2%
Market (economics) 22 6.2%
Audit 21 5.9%
Environmental degradation 21 5.9%
Environmental issues 21 5.9%
Fishing 21 5.9%
Fossil fuel 21 5.9%
Manufacturing 21 5.9%
Marine protected area 21 5.9%
Precision agriculture 21 5.9%
Public housing 21 5.9%
Restoration ecology 21 5.9%
Specification (technical standard) 21 5.9%
Zero-energy building 21 5.9%
Deforestation 20 5.6%
Incineration 20 5.6%
Insurance 20 5.6%
Rail transport 20 5.6%
Surveillance 20 5.6%
Water quality 20 5.6%
Accessibility 19 5.4%
Charging station 19 5.4%
Compressed natural gas 19 5.4%
Photovoltaics 19 5.4%
Materials 18 5.1%
Sustainable fishery 18 5.1%
Sustainable forest management 18 5.1%
Urban renewal 18 5.1%
Water scarcity 18 5.1%
Active mobility 17 4.8%
Biodegradation 17 4.8%
Carbon sequestration 17 4.8%
Chemical substances 17 4.8%
Economic development 17 4.8%
Economics of climate change mitigation 17 4.8%
Exhaust gas 17 4.8%
Food system 17 4.8%
Invasive species 17 4.8%
Resource 17 4.8%
Best available technology 16 4.5%
Biosecurity 16 4.5%
Carbon neutrality 16 4.5%
Clean Water Act 16 4.5%
Developing country 16 4.5%
Fisheries management 16 4.5%
Kyoto Protocol 16 4.5%
Maintenance (technical) 16 4.5%
Mechanical biological treatment 16 4.5%
Petroleum 16 4.5%
Sea level rise 16 4.5%
United States farm bill 16 4.5%
Artificial intelligence 15 4.2%
Emergency 15 4.2%
Endangered Species Act of 1973 15 4.2%
Firefighter 15 4.2%
Goal 15 4.2%
Robot 15 4.2%
Wind power 15 4.2%
Automation 14 3.9%
Digital transformation 14 3.9%
Disease 14 3.9%
Mining 14 3.9%
Organic farming 14 3.9%
Safety data sheet 14 3.9%
Volatile organic compound 14 3.9%
Carbon tax 13 3.7%
Cattle 13 3.7%
Coal 13 3.7%
Contract 13 3.7%
Coral reef 13 3.7%
Dangerous goods 13 3.7%
Drought 13 3.7%
Effects of climate change 13 3.7%
Environmental conservation 13 3.7%
Environmental law 13 3.7%
Farm 13 3.7%
Hydrology 13 3.7%
Machine 13 3.7%
Meat 13 3.7%
Water footprint 13 3.7%
Biotechnology 12 3.4%
Carbon sink 12 3.4%
Combustibility and flammability 12 3.4%
Emission intensity 12 3.4%
Fire safety 12 3.4%
Fresh water 12 3.4%
Fuel cell vehicle 12 3.4%
Government 12 3.4%
Gross domestic product 12 3.4%
Heating, ventilation, and air conditioning 12 3.4%
Information 12 3.4%
Personal protective equipment 12 3.4%
Pipeline transport 12 3.4%
Plant breeding 12 3.4%
Procurement 12 3.4%
Sanitation 12 3.4%
Solar power 12 3.4%
Surface runoff 12 3.4%
System 12 3.4%
Tropical cyclone 12 3.4%
Vehicle 12 3.4%
Wheat 12 3.4%
Algal bloom 11 3.1%
Biodiversity loss 11 3.1%
Cost–benefit analysis 11 3.1%
Ecosystem services 11 3.1%
Environmental protection 11 3.1%
Eutrophication 11 3.1%
Fire sprinkler system 11 3.1%
Food safety 11 3.1%
Green building 11 3.1%
Maize 11 3.1%
Mire 11 3.1%
National Wildlife Refuge 11 3.1%
Natural resource management 11 3.1%
Nature-based solutions 11 3.1%
Productivity 11 3.1%
Quality assurance 11 3.1%
Sea 11 3.1%
Sustainable agriculture 11 3.1%
Unmanned aerial vehicle 11 3.1%
Wastewater 11 3.1%
Wastewater treatment 11 3.1%
Animal husbandry 10 2.8%
Aquifer 10 2.8%
Atmosphere of Earth 10 2.8%
Best practice 10 2.8%
Biodegradable waste 10 2.8%
Biology 10 2.8%
Computer security 10 2.8%
Conservation movement 10 2.8%
Effects of global warming 10 2.8%
Endangered species 10 2.8%
Fire 10 2.8%
Intensive farming 10 2.8%
Loan 10 2.8%
Methane 10 2.8%
Noise 10 2.8%
Precipitation 10 2.8%
Registration, Evaluation, Authorisation and Restriction of Chemicals 10 2.8%
Reliability engineering 10 2.8%
Resource Conservation and Recovery Act 10 2.8%
Simulation 10 2.8%
Superfund 10 2.8%
Water resource management 10 2.8%
Antimicrobial resistance 9 2.5%
Appropriations bill (United States) 9 2.5%
Combustion 9 2.5%
Crop rotation 9 2.5%
Earthquake 9 2.5%
Economic inequality 9 2.5%
Environmental remediation 9 2.5%
Good laboratory practice 9 2.5%
Habitat 9 2.5%
Habitat fragmentation 9 2.5%
Institutional review board 9 2.5%
Liquefied natural gas 9 2.5%
Ozone 9 2.5%
Poverty reduction 9 2.5%
Rain 9 2.5%
Reuse 9 2.5%
Rice 9 2.5%
Solar energy 9 2.5%
Statistics 9 2.5%
Supply chain 9 2.5%
Tourism 9 2.5%
Toxicology 9 2.5%
United States Code 9 2.5%
Zero-emissions vehicle 9 2.5%
Brownfield land 8 2.3%
COVID-19 pandemic 8 2.3%
Cancer 8 2.3%
Carbon capture and storage 8 2.3%
Clean Air Act (United States) 8 2.3%
Decree 8 2.3%
Design 8 2.3%
Energy industry 8 2.3%
Erosion 8 2.3%
European Union Emission Trading Scheme 8 2.3%
Extreme weather 8 2.3%
General circulation model 8 2.3%
Greenhouse effect 8 2.3%
Hydrocarbon 8 2.3%
Ionizing radiation 8 2.3%
Laboratory 8 2.3%
Land use, land-use change, and forestry 8 2.3%
Malnutrition 8 2.3%
Milk 8 2.3%
Nature reserve 8 2.3%
Plastic 8 2.3%
Public health 8 2.3%
Purchasing 8 2.3%
Quantitative structure–activity relationship 8 2.3%
Representative Concentration Pathway 8 2.3%
River 8 2.3%
Safe Drinking Water Act 8 2.3%
Scientific method 8 2.3%
Societal collapse 8 2.3%
Stormwater 8 2.3%
Supplemental Nutrition Assistance Program 8 2.3%
Teacher 8 2.3%
Wildfire suppression 8 2.3%
Administration of federal assistance in the United States 7 2.0%
Animal welfare 7 2.0%
Bovine spongiform encephalopathy 7 2.0%
Carbon price 7 2.0%
Census 7 2.0%
Cereal 7 2.0%
Chemical process engineering 7 2.0%
Clinical trial 7 2.0%
Competition (economics) 7 2.0%
Conservation status 7 2.0%
Coypu 7 2.0%
Crane (machine) 7 2.0%
Crop insurance 7 2.0%
Database 7 2.0%
Disaster risk reduction 7 2.0%
Economy and the environment 7 2.0%
Electrical grid 7 2.0%
Farmer 7 2.0%
Genotoxicity 7 2.0%
Geographic information system 7 2.0%
Global environmental issues 7 2.0%
Habitat conservation 7 2.0%
Habitat destruction 7 2.0%
Interest 7 2.0%
Labour economics 7 2.0%
Law 7 2.0%
Measurement 7 2.0%
Medical device 7 2.0%
Municipal solid waste 7 2.0%
NOx 7 2.0%
National Environmental Policy Act 7 2.0%
Natural capital 7 2.0%
Nuclear power 7 2.0%
Oil refinery 7 2.0%
Oil well 7 2.0%
Plant 7 2.0%
Polylactic acid 7 2.0%
Port 7 2.0%
Public sphere 7 2.0%
Requirement 7 2.0%
Robotics 7 2.0%
Rulemaking 7 2.0%
Seismology 7 2.0%
Transmission (mechanics) 7 2.0%
U.S. state 7 2.0%
WIC 7 2.0%
Water treatment 7 2.0%
ALARP 6 1.7%
Absorption (skin) 6 1.7%
Anaerobic digestion 6 1.7%
Applied and interdisciplinary physics 6 1.7%
Aquatic ecosystem 6 1.7%
Biobased economy 6 1.7%
Bioenergy 6 1.7%
Bioinformatics 6 1.7%
Biosafety 6 1.7%
Branches of science 6 1.7%
Building 6 1.7%
CE marking 6 1.7%
Car 6 1.7%
Carbon footprint 6 1.7%
Catalysis 6 1.7%
Climate variability and change 6 1.7%
Competition (companies) 6 1.7%
Data analysis 6 1.7%
Desalination 6 1.7%
Diet (nutrition) 6 1.7%
Differential scanning calorimetry 6 1.7%
Economic sectors 6 1.7%
Electricity generation 6 1.7%
Environmental engineering 6 1.7%
Environmental policy 6 1.7%
Epidemiology 6 1.7%
Exposure assessment 6 1.7%
Finance 6 1.7%
Gas chromatography 6 1.7%
Gases 6 1.7%
Globalization 6 1.7%
Harmful algal bloom 6 1.7%
Historic preservation 6 1.7%
Hydraulic fracturing 6 1.7%
IPCC Sixth Assessment Report 6 1.7%
Kill switch 6 1.7%
Landfill 6 1.7%
Logistics 6 1.7%
Marketing 6 1.7%
Metal 6 1.7%
Meteorology 6 1.7%
Nanoparticle 6 1.7%
Natural disaster 6 1.7%
Nutrition 6 1.7%
Ocean 6 1.7%
Offshore wind power 6 1.7%
Organisms 6 1.7%
Plug-in hybrid 6 1.7%
Prediction 6 1.7%
Reducing emissions from deforestation and forest degradation 6 1.7%
Remote sensing 6 1.7%
Renewable resource 6 1.7%
Road 6 1.7%
Scanning electron microscope 6 1.7%
Self-driving car 6 1.7%
Shale gas 6 1.7%
Ship 6 1.7%
Test (assessment) 6 1.7%
Tractor 6 1.7%
Training 6 1.7%
Urban agriculture 6 1.7%
Vaccine 6 1.7%
Valve 6 1.7%
Vegetable 6 1.7%
Vulnerability (computing) 6 1.7%
A-weighting 5 1.4%
Academic degree 5 1.4%
Analytics 5 1.4%
Apprenticeship 5 1.4%
Atmospheric dispersion modeling 5 1.4%
Bank 5 1.4%
Barrel (unit) 5 1.4%
Biogas 5 1.4%
CLP Regulation 5 1.4%
Cadmium 5 1.4%
California Environmental Quality Act 5 1.4%
Capacity building 5 1.4%
Carbon budget 5 1.4%
Carbon offset 5 1.4%
City 5 1.4%
Clean Development Mechanism 5 1.4%
Conservation (ethic) 5 1.4%
Conservation Reserve Program 5 1.4%
Dairy cattle 5 1.4%
Diesel fuel 5 1.4%
Dose (biochemistry) 5 1.4%
Dose–response relationship 5 1.4%
Earth phenomena 5 1.4%
Earthscope 5 1.4%
Ecological footprint 5 1.4%
Ecotourism 5 1.4%
Elevator 5 1.4%
Energy Performance Certificate (United Kingdom) 5 1.4%
Engine 5 1.4%
Engineer 5 1.4%
Enhanced oil recovery 5 1.4%
Environmental governance 5 1.4%
Environmental monitoring 5 1.4%
Externality 5 1.4%
Food prices 5 1.4%
Forecasting 5 1.4%
Fuels 5 1.4%
Genetics 5 1.4%
Global warming potential 5 1.4%
Great Lakes 5 1.4%
Greenhouse gas inventory 5 1.4%
Grinding (abrasive cutting) 5 1.4%
Groundwater recharge 5 1.4%
Hybrid electric vehicle 5 1.4%
Hydrocarbons 5 1.4%
Indirect land use change impacts of biofuels 5 1.4%
Internet of things 5 1.4%
Inventory 5 1.4%
Investment 5 1.4%
Land management 5 1.4%
Landscape 5 1.4%
Lead 5 1.4%
Liquid dielectrics 5 1.4%
MMR vaccine 5 1.4%
Mauna Kea 5 1.4%
Mechanical engineering 5 1.4%
Medical diagnosis 5 1.4%
Melting point 5 1.4%
Mercury (element) 5 1.4%
National Invasive Species Act 5 1.4%
National Priorities List 5 1.4%
Nationally Determined Contributions 5 1.4%
North American Wetlands Conservation Act 5 1.4%
Notified body 5 1.4%
Obesity 5 1.4%
Observatory 5 1.4%
Office of Inspector General (United States) 5 1.4%
Oil spill 5 1.4%
Pest (organism) 5 1.4%
Petroleum industry 5 1.4%
Petroleum reservoir 5 1.4%
Physical chemistry 5 1.4%
Planetary boundaries 5 1.4%
Plantation 5 1.4%
Plastic pollution 5 1.4%
Politics of climate change 5 1.4%
Polymer 5 1.4%
Pressure 5 1.4%
Primary sector of the economy 5 1.4%
Pump 5 1.4%
Regulation 5 1.4%
Road traffic safety 5 1.4%
Science, technology, engineering, and mathematics 5 1.4%
Sound pressure 5 1.4%
Soybean 5 1.4%
Storm 5 1.4%
Storm drain 5 1.4%
Strategic planning 5 1.4%
Sustainable Development Goal 13 5 1.4%
Sustainable city 5 1.4%
Sustainable food system 5 1.4%
Sustainable products 5 1.4%
Systems ecology 5 1.4%
Thirty Meter Telescope 5 1.4%
Tipping points in the climate system 5 1.4%
Tribal colleges and universities 5 1.4%
Uncertainty 5 1.4%
Underground storage tank 5 1.4%
Vapor pressure 5 1.4%
Ventilation (architecture) 5 1.4%
Verification and validation 5 1.4%
Water heating 5 1.4%
Water supply 5 1.4%
Water supply network 5 1.4%
Wealth 5 1.4%
Welfare 5 1.4%
Wind 5 1.4%
Acute myeloid leukemia 4 1.1%
Adsorption 4 1.1%
Alfalfa 4 1.1%
Algae fuel 4 1.1%
Ammonia 4 1.1%
Animal slaughter 4 1.1%
Architect 4 1.1%
Arctic 4 1.1%
Artificial materials 4 1.1%
Bacteria 4 1.1%
Battery electric vehicle 4 1.1%
Big data 4 1.1%
Biobank 4 1.1%
Bioplastic 4 1.1%
Biorefinery 4 1.1%
Biosolids 4 1.1%
Boiler 4 1.1%
Boll weevil 4 1.1%
Building code 4 1.1%
Building regulations in the United Kingdom 4 1.1%
Carbon dioxide in Earth's atmosphere 4 1.1%
Carcinogen 4 1.1%
Cardiovascular disease 4 1.1%
Cargo 4 1.1%
Chemical engineering 4 1.1%
Chromatography 4 1.1%
Chromium 4 1.1%
Chronic toxicity 4 1.1%
Chronic wasting disease 4 1.1%
Citrus greening disease 4 1.1%
Citrus production 4 1.1%
Climate change and agriculture 4 1.1%
Climate change policy of the United States 4 1.1%
Climate change scenario 4 1.1%
Coal mining 4 1.1%
Coalbed methane 4 1.1%
Coastal management 4 1.1%
Commonwealth (U.S. insular area) 4 1.1%
Confined space 4 1.1%
Copyright 4 1.1%
Corrosion 4 1.1%
Cosmic ray 4 1.1%
Crime 4 1.1%
DNA 4 1.1%
DNA sequencing 4 1.1%
Data quality 4 1.1%
Decibel 4 1.1%
Decision-making 4 1.1%
Demand 4 1.1%
Density 4 1.1%
Disaster 4 1.1%
Distributed generation 4 1.1%
Drainage basin 4 1.1%
Drill 4 1.1%
Earth's magnetic field 4 1.1%
Electric power transmission 4 1.1%
Emissions budget 4 1.1%
Energy management 4 1.1%
Epoxy 4 1.1%
Essential fish habitat 4 1.1%
Everglades 4 1.1%
Expense 4 1.1%
Explosive 4 1.1%
Extinction 4 1.1%
Extraction of petroleum 4 1.1%
Fake news 4 1.1%
Food for Peace 4 1.1%
Food waste 4 1.1%
Fossil fuels 4 1.1%
Freedom of Information Act (United States) 4 1.1%
Fuel oil 4 1.1%
Gene 4 1.1%
Genomics 4 1.1%
Geomagnetic reversal 4 1.1%
Health sciences 4 1.1%
Herbicide 4 1.1%
High-performance liquid chromatography 4 1.1%
Hoist (device) 4 1.1%
Human factors and ergonomics 4 1.1%
Hypothermia 4 1.1%
Indoor air quality 4 1.1%
Information technology 4 1.1%
Land degradation 4 1.1%
Lawn 4 1.1%
Legume 4 1.1%
Leukemia 4 1.1%
Life sciences 4 1.1%
Liquid 4 1.1%
Maritime transport 4 1.1%
Medicine 4 1.1%
Metalworking 4 1.1%
Methane emissions 4 1.1%
National Instant Criminal Background Check System 4 1.1%
Nitrification 4 1.1%
Noise pollution 4 1.1%
Non-governmental organization 4 1.1%
Nonprofit organization 4 1.1%
Old-growth forest 4 1.1%
Organic certification 4 1.1%
Organization 4 1.1%
Oxide 4 1.1%
Paper cup 4 1.1%
Photovoltaic system 4 1.1%
Politics 4 1.1%
Polymerase chain reaction 4 1.1%
Power station 4 1.1%
Prevention 4 1.1%
Public–private partnership 4 1.1%
Quality management 4 1.1%
Redox 4 1.1%
Reforestation 4 1.1%
Retail 4 1.1%
ShakeAlert 4 1.1%
Sheep 4 1.1%
Silicon 4 1.1%
Smart city 4 1.1%
Social media 4 1.1%
Software 4 1.1%
Solar cell 4 1.1%
Solar cell efficiency 4 1.1%
Solubility 4 1.1%
Standardization 4 1.1%
Steam 4 1.1%
Sustainability and environmental management 4 1.1%
Sustainable Development Goal 2 4 1.1%
Sustainable technologies 4 1.1%
Synergy 4 1.1%
Tax refund 4 1.1%
Temperature 4 1.1%
Threatened species 4 1.1%
Tight oil 4 1.1%
Traceability 4 1.1%
Trade 4 1.1%
Tsunami 4 1.1%
Unconventional oil 4 1.1%
Urban planning 4 1.1%
Urbanization 4 1.1%
Vulnerability 4 1.1%
Warehouse 4 1.1%
Weather 4 1.1%
Well 4 1.1%
Wildlife 4 1.1%
X-ray crystallography 4 1.1%
Zeolite 4 1.1%
Acid dissociation constant 3 0.8%
Actuator 3 0.8%
Africa 3 0.8%
Ageing 3 0.8%
Agricultural machinery 3 0.8%
Agroforestry 3 0.8%
Aid 3 0.8%
Aluminium 3 0.8%
Amazon rainforest 3 0.8%
Analytical chemistry 3 0.8%
Animal testing 3 0.8%
Asbestos 3 0.8%
Atmosphere 3 0.8%
Avian influenza 3 0.8%
Bacteriocin 3 0.8%
Banana 3 0.8%
Bandsaw 3 0.8%
Behavior 3 0.8%
Bill (law) 3 0.8%
Bioavailability 3 0.8%
Biochemical oxygen demand 3 0.8%
Biocide 3 0.8%
Biodiesel 3 0.8%
Biomarker 3 0.8%
Biomonitoring 3 0.8%
Board of directors 3 0.8%
Boiling 3 0.8%
Boiling point 3 0.8%
Buffer zone 3 0.8%
Bullet 3 0.8%
Business process 3 0.8%
Calf 3 0.8%
Carbon emission trading 3 0.8%
Carbon fiber reinforced polymer 3 0.8%
Caribbean 3 0.8%
Cartridge (firearms) 3 0.8%
Central heating 3 0.8%
Change 3 0.8%
Chemical industry 3 0.8%
Clean Air Act of 1963 3 0.8%
Climate change feedback 3 0.8%
Climate finance 3 0.8%
Clothing 3 0.8%
Coast 3 0.8%
Cogeneration 3 0.8%
College 3 0.8%
Committee 3 0.8%
Common Agricultural Policy 3 0.8%
Composite material 3 0.8%
Computer 3 0.8%
Computer simulation 3 0.8%
Concentrated animal feeding operation 3 0.8%
Controlled burn 3 0.8%
Copolymer 3 0.8%
Coronavirus disease 2019 3 0.8%
Coupled Model Intercomparison Project 3 0.8%
Culture 3 0.8%
Cycling infrastructure 3 0.8%
DDT 3 0.8%
DNA profiling 3 0.8%
Dairy 3 0.8%
Dam 3 0.8%
Daphnia 3 0.8%
Data 3 0.8%
Diesel exhaust 3 0.8%
Disability 3 0.8%
Drilling rig 3 0.8%
Drug resistance 3 0.8%
Drylands 3 0.8%
Dust 3 0.8%
Earth 3 0.8%
Electrification 3 0.8%
Electronic waste 3 0.8%
Emission standard 3 0.8%
Energy storage 3 0.8%
Energy-dispersive X-ray spectroscopy 3 0.8%
Engineering controls 3 0.8%
Engineering design process 3 0.8%
Enteric fermentation 3 0.8%
Entrepreneurship 3 0.8%
Environmental impact 3 0.8%
Environmental, social and corporate governance 3 0.8%
Fathead minnow 3 0.8%
Fee 3 0.8%
Fiber 3 0.8%
Firearm 3 0.8%
Firearms 3 0.8%
Firefighting 3 0.8%
First aid 3 0.8%
Flexible Mechanisms 3 0.8%
Fluorinated gases 3 0.8%
Fluorine 3 0.8%
Food policy 3 0.8%
Forklift 3 0.8%
Formaldehyde 3 0.8%
Freezing 3 0.8%
Fuel production 3 0.8%
Functional genomics 3 0.8%
Fungus 3 0.8%
Gas 3 0.8%
Gas chromatography–mass spectrometry 3 0.8%
Gas flare 3 0.8%
Gasoline 3 0.8%
Gel 3 0.8%
Gel electrophoresis 3 0.8%
Genetic engineering 3 0.8%
Genetic marker 3 0.8%
Geotechnical engineering 3 0.8%
Gini coefficient 3 0.8%
Glyphosate 3 0.8%
Grant (money) 3 0.8%
Grazing 3 0.8%
Grinding wheel 3 0.8%
Groundwater pollution 3 0.8%
Gun barrel 3 0.8%
HVAC 3 0.8%
Habitat Conservation Plan 3 0.8%
Hazard and operability study 3 0.8%
Health care 3 0.8%
Healthy diet 3 0.8%
Heat 3 0.8%
Heat wave 3 0.8%
Henry's law 3 0.8%
Heterosis 3 0.8%
Historic Preservation Fund 3 0.8%
Home insurance 3 0.8%
Human nutrition 3 0.8%
Humidity 3 0.8%
Hunger 3 0.8%
Hydroelectricity 3 0.8%
Hydrogen 3 0.8%
Hydrogen sulfide 3 0.8%
Hydroxides 3 0.8%
Hypoxia (environmental) 3 0.8%
Inbred strain 3 0.8%
Inbreeding 3 0.8%
Infection 3 0.8%
Intended Nationally Determined Contributions 3 0.8%
Internal control 3 0.8%
Land use 3 0.8%
Land-use planning 3 0.8%
Langmuir adsorption model 3 0.8%
Laser 3 0.8%
Laudato si' 3 0.8%
Leak detection 3 0.8%
Lettuce 3 0.8%
Lidar 3 0.8%
Lockout–tagout 3 0.8%
Macaronesia 3 0.8%
Machines 3 0.8%
Mangrove 3 0.8%
Manufactured goods 3 0.8%
Manure 3 0.8%
Mass spectrometry 3 0.8%
Mathematical optimization 3 0.8%
Measurement uncertainty 3 0.8%
Median lethal dose 3 0.8%
Mekong 3 0.8%
Metal–organic framework 3 0.8%
Microorganism 3 0.8%
Microplastics 3 0.8%
Microsatellite 3 0.8%
Microscope 3 0.8%
Microscopy 3 0.8%
Molecular cloning 3 0.8%
Molecular marker 3 0.8%
Musa (genus) 3 0.8%
Mutagen 3 0.8%
Nanocomposite 3 0.8%
Nanotechnology 3 0.8%
National Wild and Scenic Rivers System 3 0.8%
Native Americans in the United States 3 0.8%
Natural hazard 3 0.8%
Natural-gas processing 3 0.8%
Nitrous oxide 3 0.8%
Nondestructive testing 3 0.8%
Nutrient pollution 3 0.8%
Oil reserves 3 0.8%
Organic aquaculture 3 0.8%
Organic food 3 0.8%
Out of autoclave composite manufacturing 3 0.8%
Packaging and labeling 3 0.8%
Partition coefficient 3 0.8%
Per- and polyfluoroalkyl substances 3 0.8%
Persistent organic pollutant 3 0.8%
Photocatalysis 3 0.8%
Photosynthesis 3 0.8%
Physician 3 0.8%
Pipe (fluid conveyance) 3 0.8%
Pollution prevention 3 0.8%
Polycyclic aromatic hydrocarbon 3 0.8%
Polypropylene 3 0.8%
Poverty threshold 3 0.8%
Preventive healthcare 3 0.8%
Price 3 0.8%
Primer (molecular biology) 3 0.8%
Probiotic 3 0.8%
Projectile weapons 3 0.8%
Projectiles 3 0.8%
Propane 3 0.8%
Psychological resilience 3 0.8%
Radiative forcing 3 0.8%
Random amplification of polymorphic DNA 3 0.8%
Recession 3 0.8%
Red wolf 3 0.8%
Refrigerants 3 0.8%
Regression analysis 3 0.8%
Rehabilitation Act of 1973 3 0.8%
Relative density 3 0.8%
Reservoir 3 0.8%
Respirator 3 0.8%
Rheology 3 0.8%
Rifle 3 0.8%
Ripening 3 0.8%
Rollover protection structure 3 0.8%
Saba banana 3 0.8%
Safety case 3 0.8%
Saltwater intrusion 3 0.8%
Scaffolding 3 0.8%
Sewage 3 0.8%
Sewage sludge 3 0.8%
Silicon dioxide 3 0.8%
Single Audit 3 0.8%
Situation awareness 3 0.8%
Smoke detector 3 0.8%
Social vulnerability 3 0.8%
Soil contamination 3 0.8%
Solution 3 0.8%
Sound level meter 3 0.8%
Special Report on Climate Change and Land 3 0.8%
Special Report on Emissions Scenarios 3 0.8%
Special member state territories and the European Union 3 0.8%
Stafford Disaster Relief and Emergency Assistance Act 3 0.8%
Staple food 3 0.8%
Steel 3 0.8%
Stream 3 0.8%
Student financial aid (United States) 3 0.8%
Survey methodology 3 0.8%
Survey of Income and Program Participation 3 0.8%
Sustainable Development Goal 17 3 0.8%
Sustainable Development Goal 6 3 0.8%
Sustainable tourism 3 0.8%
Tailings 3 0.8%
Taq polymerase 3 0.8%
The Green Deal 3 0.8%
Thermoplastic 3 0.8%
Thermoplastic elastomer 3 0.8%
Threshold limit value 3 0.8%
Titanium dioxide 3 0.8%
Tonlé Sap 3 0.8%
Tool and die maker 3 0.8%
Tools 3 0.8%
Toxic Substances Control Act of 1976 3 0.8%
Traffic collision 3 0.8%
Tree 3 0.8%
Urban green space 3 0.8%
Urban heat island 3 0.8%
Usability 3 0.8%
Valuation (finance) 3 0.8%
Value chain 3 0.8%
Viscoelasticity 3 0.8%
Water cycle 3 0.8%
Water purification 3 0.8%
Water security 3 0.8%
Weapons 3 0.8%
Weather forecasting 3 0.8%
Weed 3 0.8%
Welding 3 0.8%
Wildland–urban interface 3 0.8%
Wildlife corridor 3 0.8%
Wood 3 0.8%
Working conditions 3 0.8%
Zoonosis 3 0.8%
501(c) organization 2 0.6%
9×19mm Parabellum 2 0.6%
Abrasive 2 0.6%
Acetic acid 2 0.6%
Acid rain 2 0.6%
Adaptive optics 2 0.6%
Advertising 2 0.6%
Affordable housing 2 0.6%
Afforestation 2 0.6%
Agricultural policy 2 0.6%
Agricultural pollution 2 0.6%
Agricultural productivity 2 0.6%
Agricultural subsidy 2 0.6%
Agrifood systems 2 0.6%
Agroecology 2 0.6%
Agronomy 2 0.6%
Air conditioning 2 0.6%
Algae 2 0.6%
All-terrain vehicle 2 0.6%
Ammunition 2 0.6%
Antibiotic 2 0.6%
Archaeology 2 0.6%
Aromaticity 2 0.6%
Asthma 2 0.6%
Audiogram 2 0.6%
BTX (chemistry) 2 0.6%
Beef 2 0.6%
Belt (mechanical) 2 0.6%
Benzene 2 0.6%
Biochar 2 0.6%
Bioconcentration 2 0.6%
Biofuel in the European Union 2 0.6%
Biological pest control 2 0.6%
Bioproducts 2 0.6%
Black carbon 2 0.6%
Blank (cartridge) 2 0.6%
Blood 2 0.6%
Bookkeeping 2 0.6%
Boundary Waters Canoe Area Wilderness 2 0.6%
Brand 2 0.6%
Breastfeeding 2 0.6%
British Standards 2 0.6%
Buffer strip 2 0.6%
Bus 2 0.6%
Butadiene 2 0.6%
Caliber 2 0.6%
Call centre 2 0.6%
Capability approach 2 0.6%
Capital (economics) 2 0.6%
Carbon 2 0.6%
Carbon cycle 2 0.6%
Carbon dioxide removal 2 0.6%
Carrot 2 0.6%
Catalytic reforming 2 0.6%
Cattle feeding 2 0.6%
Centerfire ammunition 2 0.6%
Chemical oxygen demand 2 0.6%
Chemical substance 2 0.6%
Chief executive officer 2 0.6%
Chlorine 2 0.6%
Circular saw 2 0.6%
Civil engineering 2 0.6%
Clean Power Plan 2 0.6%
Climate Change Science Program 2 0.6%
Climate Finance 2 0.6%
Climate change in the Arctic 2 0.6%
Climate forcing 2 0.6%
Climate governance 2 0.6%
Cold chain 2 0.6%
Combined sewer 2 0.6%
Communication 2 0.6%
Competition 2 0.6%
Compliance requirements 2 0.6%
Comprehensive planning 2 0.6%
Compressed-air energy storage 2 0.6%
Compressor 2 0.6%
Concrete 2 0.6%
Confidentiality 2 0.6%
Conservation agriculture 2 0.6%
Cost 2 0.6%
Cost-effectiveness analysis 2 0.6%
Coupling 2 0.6%
Cracking (chemistry) 2 0.6%
Cruise ship 2 0.6%
Dairy farming 2 0.6%
Deep foundation 2 0.6%
Delayed coker 2 0.6%
Demographic transition 2 0.6%
Denitrification 2 0.6%
Desertification 2 0.6%
Detection limit 2 0.6%
Development aid 2 0.6%
Dieldrin 2 0.6%
Digitization 2 0.6%
Dioxins and dioxin-like compounds 2 0.6%
Disease burden 2 0.6%
Distributed control system 2 0.6%
Distribution (marketing) 2 0.6%
Drafter 2 0.6%
Drainage 2 0.6%
Drilling 2 0.6%
Drilling fluid 2 0.6%
E-government 2 0.6%
Earmark (politics) 2 0.6%
Earthquake engineering 2 0.6%
Earthquake warning system 2 0.6%
Economic data 2 0.6%
Economics of climate change 2 0.6%
Educational technology 2 0.6%
Electric generator 2 0.6%
Electrical engineering 2 0.6%
Electricity 2 0.6%
Emission inventory 2 0.6%
Emission spectrum 2 0.6%
Employee retention 2 0.6%
Emulsion 2 0.6%
Endocrine disruptor 2 0.6%
Energy Star 2 0.6%
Energy policy 2 0.6%
Energy security 2 0.6%
Engineering technician 2 0.6%
Engineering tolerance 2 0.6%
Enterprise architecture 2 0.6%
Environmental health 2 0.6%
Environmental issues with fossil fuels 2 0.6%
Environmental justice 2 0.6%
Environmental resource management 2 0.6%
Environmentalism 2 0.6%
Enzyme inhibitor 2 0.6%
Eurocode 3: Design of steel structures 2 0.6%
Evapotranspiration 2 0.6%
Experiment 2 0.6%
Extreme poverty 2 0.6%
Farmworker 2 0.6%
Fat 2 0.6%
Federal Acquisition Regulation 2 0.6%
Federal Advisory Committee Act 2 0.6%
Federal Insecticide, Fungicide, and Rodenticide Act 2 0.6%
Fire extinguisher 2 0.6%
Fish hatchery 2 0.6%
Flammability limit 2 0.6%
Flood insurance 2 0.6%
Floodplain 2 0.6%
Fluid catalytic cracking 2 0.6%
Fluorescence 2 0.6%
Fluorine-19 nuclear magnetic resonance spectroscopy 2 0.6%
Food Quality Protection Act 2 0.6%
Foundry 2 0.6%
Fraud 2 0.6%
Free trade 2 0.6%
Fuel cell 2 0.6%
Fuel efficiency 2 0.6%
Fusion power 2 0.6%
Genetically modified crops 2 0.6%
Geographical indications and traditional specialities in the European Union 2 0.6%
Geology 2 0.6%
Globally Harmonized System of Classification and Labelling of Chemicals 2 0.6%
Goat 2 0.6%
Green Revolution 2 0.6%
Green bank 2 0.6%
Greenhouse 2 0.6%
Greenland ice sheet 2 0.6%
Guided wave testing 2 0.6%
Gun 2 0.6%
Gunshot residue 2 0.6%
Hail 2 0.6%
Handgun 2 0.6%
Hawaii Route 200 2 0.6%
Health professional 2 0.6%
Heat pump 2 0.6%
High-rise building 2 0.6%
Highway 2 0.6%
History of fire safety legislation in the United Kingdom 2 0.6%
Honey 2 0.6%
Horsepower 2 0.6%
Human migration 2 0.6%
Human resource management 2 0.6%
Human resources 2 0.6%
Human subject research 2 0.6%
Hydrodesulfurization 2 0.6%
IPCC Fifth Assessment Report 2 0.6%
IPCC Summary for Policymakers 2 0.6%
IPCC Third Assessment Report 2 0.6%
ISO 13485 2 0.6%
ISO 14000 2 0.6%
Ice 2 0.6%
Immigration 2 0.6%
Implementation 2 0.6%
Incentive 2 0.6%
Incident Command System 2 0.6%
Industrial control system 2 0.6%
Industrial robot 2 0.6%
Industries (economics) 2 0.6%
Infiltration (hydrology) 2 0.6%
Influenza 2 0.6%
Information and communications technology 2 0.6%
Information security 2 0.6%
Inhalation exposure 2 0.6%
Instrumental temperature record 2 0.6%
Instrumentation 2 0.6%
Integrated coastal zone management 2 0.6%
Intellectual property 2 0.6%
Internal audit 2 0.6%
Internet 2 0.6%
Interoperability 2 0.6%
Introduced species 2 0.6%
Investor 2 0.6%
Issues in ethics 2 0.6%
Keystone Pipeline 2 0.6%
Labor relations 2 0.6%
Laboratory information management system 2 0.6%
Lahar 2 0.6%
Lake 2 0.6%
Land tenure 2 0.6%
Landlocked developing countries 2 0.6%
Landlord 2 0.6%
Landsat program 2 0.6%
Landslide 2 0.6%
Leachate 2 0.6%
Leaching (agriculture) 2 0.6%
Leadership 2 0.6%
Leadership in Energy and Environmental Design 2 0.6%
Learning 2 0.6%
Lease 2 0.6%
Least developed countries 2 0.6%
Lemna 2 0.6%
License 2 0.6%
Life 2 0.6%
Liquefied petroleum gas 2 0.6%
Local food 2 0.6%
Logging 2 0.6%
Longwall mining 2 0.6%
Low-carbon power 2 0.6%
Low-emission zone 2 0.6%
Lubricant 2 0.6%
Lubricants 2 0.6%
Machine learning 2 0.6%
Machinist 2 0.6%
Magazine (firearms) 2 0.6%
Malt 2 0.6%
Manual on Uniform Traffic Control Devices 2 0.6%
Manufacturing engineering 2 0.6%
Marine energy 2 0.6%
Marine propulsion 2 0.6%
Maximum Contaminant Level 2 0.6%
Medical specialty 2 0.6%
Mega Ampere Spherical Tokamak 2 0.6%
Membrane 2 0.6%
Mentorship 2 0.6%
Migratory Bird Treaty Act of 1918 2 0.6%
Mining engineering 2 0.6%
Monarch butterfly 2 0.6%
Monsoon 2 0.6%
Mortgage loan 2 0.6%
Mower 2 0.6%
Multistakeholder governance 2 0.6%
Musculoskeletal disorder 2 0.6%
Nanomaterials 2 0.6%
National Ambient Air Quality Standards 2 0.6%
National Flood Insurance Program 2 0.6%
National Information Exchange Model 2 0.6%
National debt of the United States 2 0.6%
National recreation area 2 0.6%
Natural materials 2 0.6%
Natural-gas condensate 2 0.6%
Net present value 2 0.6%
Nickel 2 0.6%
Nonpoint source pollution 2 0.6%
Nuclear decommissioning 2 0.6%
Nuclear power plant 2 0.6%
Numerical control 2 0.6%
Nutrient 2 0.6%
Occupational Safety and Health Act (United States) 2 0.6%
Occupational hygiene 2 0.6%
Offshore drilling 2 0.6%
Omega-3 fatty acid 2 0.6%
Organic matter 2 0.6%
Organofluorine chemistry 2 0.6%
Organophosphate 2 0.6%
PH 2 0.6%
Paint 2 0.6%
Paper 2 0.6%
Paperwork Reduction Act 2 0.6%
Parasitism 2 0.6%
Park 2 0.6%
Parking 2 0.6%
Pastoralism 2 0.6%
Pension 2 0.6%
Perfluorooctanesulfonic acid 2 0.6%
Perfluorooctanoic acid 2 0.6%
Permafrost 2 0.6%
Personal Responsibility and Work Opportunity Act 2 0.6%
Petroleum coke 2 0.6%
Pig 2 0.6%
Plumbing 2 0.6%
Poaching 2 0.6%
Politics of global warming 2 0.6%
Polybrominated diphenyl ethers 2 0.6%
Polyphenol 2 0.6%
Polystyrene 2 0.6%
Polysulfone 2 0.6%
Population 2 0.6%
Powder-actuated tool 2 0.6%
Power electronics 2 0.6%
Pressure vessel 2 0.6%
Primary energy 2 0.6%
Procedures of the United States House of Representatives 2 0.6%
Production (economics) 2 0.6%
Programmer 2 0.6%
Property 2 0.6%
Public relations 2 0.6%
Pump action 2 0.6%
Punching 2 0.6%
Quality management system 2 0.6%
Radial arm saw 2 0.6%
Radical (chemistry) 2 0.6%
Real estate appraisal 2 0.6%
Reasons for concern 2 0.6%
Reconciliation (United States Congress) 2 0.6%
Recruitment 2 0.6%
Reflection seismology 2 0.6%
Refrigeration 2 0.6%
Region 2 0.6%
Regulation and licensure in engineering 2 0.6%
Renewable fuels 2 0.6%
Research and development 2 0.6%
Resource Management Act 1991 2 0.6%
Resource depletion 2 0.6%
Resource recovery 2 0.6%
Respiratory disease 2 0.6%
Revolver 2 0.6%
Ricochet 2 0.6%
Right to know 2 0.6%
Riparian zone 2 0.6%
River Rouge (Michigan) 2 0.6%
Ronan Point 2 0.6%
Safety management system 2 0.6%
Sales 2 0.6%
Salinity 2 0.6%
Sampling (statistics) 2 0.6%
Sanitary sewer 2 0.6%
Sanitary sewer overflow 2 0.6%
Sea ice 2 0.6%
Seat belt 2 0.6%
Seaweed 2 0.6%
Section 504 of the Rehabilitation Act 2 0.6%
Sediment 2 0.6%
Seismic analysis 2 0.6%
Self-employment 2 0.6%
Sensitivity analysis 2 0.6%
Sequoiadendron giganteum 2 0.6%
Shadow price 2 0.6%
Shared Socioeconomic Pathways 2 0.6%
Shipbuilding 2 0.6%
Shotgun 2 0.6%
Shotgun shell 2 0.6%
Smallholding 2 0.6%
Smog 2 0.6%
Snow 2 0.6%
Social exclusion 2 0.6%
Social inequality 2 0.6%
Sodium hydroxide 2 0.6%
Soil erosion 2 0.6%
Solar panel 2 0.6%
Solvent 2 0.6%
Spatial analysis 2 0.6%
Special Report on the Ocean and Cryosphere in a Changing Climate 2 0.6%
Special education 2 0.6%
Spectroscopy 2 0.6%
Spinning (textiles) 2 0.6%
Spreadsheet 2 0.6%
Sterilization (microbiology) 2 0.6%
Storm surge 2 0.6%
Stunted growth 2 0.6%
Submillimetre astronomy 2 0.6%
Subsea (technology) 2 0.6%
Subsistence agriculture 2 0.6%
Supply chain management 2 0.6%
Surface mining 2 0.6%
Surfactant 2 0.6%
Sustainable Development Goal 1 2 0.6%
Sustainable Development Goal 10 2 0.6%
Sustainable Development Goal 14 2 0.6%
Sustainable Development Goal 15 2 0.6%
Sustainable Development Goal 3 2 0.6%
Sustainable design 2 0.6%
Sustainable urbanism 2 0.6%
Swachh Bharat Mission 2 0.6%
Synthetic biology 2 0.6%
System of Integrated Environmental and Economic Accounting 2 0.6%
Temporary Assistance for Needy Families 2 0.6%
Textile 2 0.6%
Thomas Fire 2 0.6%
Tillage 2 0.6%
Time 2 0.6%
Tokamak 2 0.6%
Ton 2 0.6%
Toxic equivalency factor 2 0.6%
Traditional knowledge 2 0.6%
Traffic 2 0.6%
Trail 2 0.6%
Transpiration 2 0.6%
Treaty 2 0.6%
Trigger (firearms) 2 0.6%
Tritium 2 0.6%
Tropospheric ozone 2 0.6%
Truck 2 0.6%
Tuition payments 2 0.6%
Typhoon Ketsana 2 0.6%
Ultrasonic testing 2 0.6%
Ultrasound 2 0.6%
Unexploded ordnance 2 0.6%
Unfunded mandate 2 0.6%
United Nations Climate Change conference 2 0.6%
United States budget process 2 0.6%
United States debt ceiling 2 0.6%
Urban forestry 2 0.6%
Urban sprawl 2 0.6%
Uruguay Round 2 0.6%
Validity (statistics) 2 0.6%
Veganism 2 0.6%
Vehicular automation 2 0.6%
Veterinary medicine 2 0.6%
Vitamin C 2 0.6%
Vitamin E 2 0.6%
Volcanic ash 2 0.6%
Volcano 2 0.6%
WASH 2 0.6%
Water and politics 2 0.6%
Water and the environment 2 0.6%
Water conservation 2 0.6%
Water management 2 0.6%
Water table 2 0.6%
Waterborne diseases 2 0.6%
Wet season 2 0.6%
Wind farm 2 0.6%
Wind turbine 2 0.6%
Wolf 2 0.6%
Wolf reintroduction 2 0.6%
Wood shaper 2 0.6%
World energy supply and consumption 2 0.6%
World population 2 0.6%
X-ray fluorescence 2 0.6%
Yarn 2 0.6%
.22 Long Rifle 1 0.3%
.40 S&W 1 0.3%
.410 bore 1 0.3%
.45 ACP 1 0.3%
1994 Northridge earthquake 1 0.3%
2,4-Dichlorophenoxyacetic acid 1 0.3%
2004 enlargement of the European Union 1 0.3%
2009 swine flu pandemic 1 0.3%
5.56×45mm NATO 1 0.3%
AR-15 style rifle 1 0.3%
ASHRAE 90.1 1 0.3%
Absorbed dose 1 0.3%
Absorption (pharmacology) 1 0.3%
Abstract (summary) 1 0.3%
Access control 1 0.3%
Accounting 1 0.3%
Accreditation 1 0.3%
Accuracy and precision 1 0.3%
Acetaldehyde 1 0.3%
Acetylcholinesterase 1 0.3%
Acid 1 0.3%
Act on Securing Quality, Efficacy and Safety of Products Including Pharmaceuticals and Medical Devices 1 0.3%
Activated sludge 1 0.3%
Active listening 1 0.3%
Activity centre 1 0.3%
Adenosine triphosphate 1 0.3%
Adherence (medicine) 1 0.3%
Adjustable-speed drive 1 0.3%
Administrative law judge 1 0.3%
Advertising campaign 1 0.3%
Advertising management 1 0.3%
Aerial work platform 1 0.3%
Aerosol 1 0.3%
Aerospace manufacturer 1 0.3%
African swine fever virus 1 0.3%
Agencies of the United States government 1 0.3%
Agenda 21 1 0.3%
Agno River 1 0.3%
Agricultural biodiversity 1 0.3%
Agricultural economics 1 0.3%
Air gun 1 0.3%
Air handler 1 0.3%
Air pollution in Turkey 1 0.3%
Air quality index 1 0.3%
Air quality law 1 0.3%
Aircraft 1 0.3%
Aircraft pilot 1 0.3%
Airsoft 1 0.3%
Airsoft gun 1 0.3%
Aldrin 1 0.3%
Algorithm 1 0.3%
Alkalinity 1 0.3%
Allegheny National Forest 1 0.3%
Alloy 1 0.3%
Alternating current 1 0.3%
Alternative dispute resolution 1 0.3%
Alternative energy 1 0.3%
Alternative fuel 1 0.3%
American Recovery and Reinvestment Act of 2009 1 0.3%
American Samoa 1 0.3%
Americans with Disabilities Act of 1990 1 0.3%
Amine gas treating 1 0.3%
Analysis 1 0.3%
Andes 1 0.3%
Animal keeping 1 0.3%
Annealing (metallurgy) 1 0.3%
Anodizing 1 0.3%
Anthropization 1 0.3%
Anthropogenic hazard 1 0.3%
Anthropometry 1 0.3%
Anti-fouling paint 1 0.3%
Antimicrobial 1 0.3%
Antioxidant 1 0.3%
Apiary 1 0.3%
Appalachia 1 0.3%
Application software 1 0.3%
Arable land 1 0.3%
Arbitration 1 0.3%
Arbor Day 1 0.3%
Arbovirus 1 0.3%
Archaea 1 0.3%
Architectural design 1 0.3%
Architecture 1 0.3%
Archivist 1 0.3%
Aromatic amino acid 1 0.3%
Aromatic compound 1 0.3%
Arsenic 1 0.3%
Asia 1 0.3%
Assault weapon 1 0.3%
Assay 1 0.3%
Asset management 1 0.3%
Astronomy 1 0.3%
Atal Mission for Rejuvenation and Urban Transformation 1 0.3%
Atherosclerosis 1 0.3%
Atlantic Ocean 1 0.3%
Atmospheric reanalysis 1 0.3%
Atmospheric sciences 1 0.3%
Atom 1 0.3%
Atomic absorption spectroscopy 1 0.3%
Audio engineer 1 0.3%
Auditor's report 1 0.3%
Austerity 1 0.3%
Authentication 1 0.3%
Automatic firearm 1 0.3%
Automatic identification system 1 0.3%
Automation bias 1 0.3%
Automotive safety 1 0.3%
Autonomous car 1 0.3%
Autonomous robot 1 0.3%
Autonomy 1 0.3%
Availability 1 0.3%
Avocado 1 0.3%
Avoirdupois system 1 0.3%
BCG vaccine 1 0.3%
Bacillus thuringiensis 1 0.3%
Backup 1 0.3%
Backwashing (water treatment) 1 0.3%
Bactrocera dorsalis 1 0.3%
Balanced budget amendment 1 0.3%
Ballistic gelatin 1 0.3%
Barcelona Convention 1 0.3%
Barge 1 0.3%
Barium 1 0.3%
Bark (botany) 1 0.3%
Bark beetle 1 0.3%
Barley 1 0.3%
Basal area 1 0.3%
Bathroom 1 0.3%
Battery cage 1 0.3%
Bears Ears National Monument 1 0.3%
Beaufort scale 1 0.3%
Bee 1 0.3%
Beer 1 0.3%
Beetle 1 0.3%
Benchmarking 1 0.3%
Best management practice for water pollution 1 0.3%
Bias 1 0.3%
Bicycle 1 0.3%
Bicycle-sharing system 1 0.3%
Bio-energy with carbon capture and storage 1 0.3%
Bioaccumulation 1 0.3%
Biodegradable plastic 1 0.3%
Biodiversity action plan 1 0.3%
Bioenergy with carbon capture and storage 1 0.3%
Biofilm 1 0.3%
Biofouling 1 0.3%
Biogeochemistry 1 0.3%
Bioindicator 1 0.3%
Biomagnification 1 0.3%
Biomass (ecology) 1 0.3%
Biomedical engineering 1 0.3%
Biophysical environment 1 0.3%
Bioreactor 1 0.3%
Bioretention 1 0.3%
Biosafety cabinet 1 0.3%
Biosensor 1 0.3%
Bioswale 1 0.3%
Biosynthesis 1 0.3%
Bioterrorism 1 0.3%
Biotic Ligand Model 1 0.3%
Bipartisanship 1 0.3%
Birth defect 1 0.3%
Birth weight 1 0.3%
Bivalvia 1 0.3%
Black Belt (region of Alabama) 1 0.3%
Blended finance 1 0.3%
Blood lead level 1 0.3%
Blue carbon 1 0.3%
Blue economy 1 0.3%
Boiling liquid expanding vapor explosion 1 0.3%
Bolikhamsai Province 1 0.3%
Bolloré Bluecar 1 0.3%
Bolt action 1 0.3%
Borehole 1 0.3%
Bottled water 1 0.3%
Bottlenose dolphin 1 0.3%
Brazing 1 0.3%
Bread 1 0.3%
Breathing 1 0.3%
Brewing 1 0.3%
Broccoli 1 0.3%
Broiler 1 0.3%
Bromomethane 1 0.3%
Brownian motion 1 0.3%
Browse LNG 1 0.3%
Budget 1 0.3%
Budget of the European Union 1 0.3%
Building engineering 1 0.3%
Building envelope 1 0.3%
Building insulation 1 0.3%
Building technology 1 0.3%
Built environment 1 0.3%
Bullying 1 0.3%
Burden of proof (law) 1 0.3%
Burglary 1 0.3%
Business model 1 0.3%
CT scan 1 0.3%
Cabinet (government) 1 0.3%
Calcium 1 0.3%
Calcium carbonate 1 0.3%
Calcium hydroxide 1 0.3%
Calibration 1 0.3%
Calipers 1 0.3%
Caloosahatchee River 1 0.3%
Camp Fire (2018) 1 0.3%
Canopy (biology) 1 0.3%
Carbohydrate 1 0.3%
Carbon accounting 1 0.3%
Carbon credit 1 0.3%
Carbon fee and dividend 1 0.3%
Caregiver 1 0.3%
Carl Moyer Memorial Air Quality Standards Attainment Program 1 0.3%
Carnivore 1 0.3%
Carrying capacity 1 0.3%
Cash crop 1 0.3%
Casing (borehole) 1 0.3%
Cauliflower 1 0.3%
Cell (biology) 1 0.3%
Cell culture 1 0.3%
Cell membrane 1 0.3%
Celsius 1 0.3%
Cement 1 0.3%
Central Asia 1 0.3%
Cerrado 1 0.3%
Certification 1 0.3%
Certified wood 1 0.3%
Changwon 1 0.3%
Chemical compounds 1 0.3%
Chemical elements 1 0.3%
Chemical equilibrium 1 0.3%
Chemical safety assessment 1 0.3%
Chemometrics 1 0.3%
Chicken 1 0.3%
Chief information officer 1 0.3%
Child care 1 0.3%
Child labour 1 0.3%
Chlordane 1 0.3%
Chloride 1 0.3%
Chlorofluorocarbon 1 0.3%
Chlorophyll 1 0.3%
Chloroplast 1 0.3%
Chronic condition 1 0.3%
Chronic obstructive pulmonary disease 1 0.3%
Chrysotile 1 0.3%
Chuck (engineering) 1 0.3%
Cigarette 1 0.3%
Citizen science 1 0.3%
Civil Rights Act of 1964 1 0.3%
Civil rights movement 1 0.3%
Claims adjuster 1 0.3%
Classified information 1 0.3%
Clay 1 0.3%
Clean Water Rule 1 0.3%
Clean technology 1 0.3%
Clearcutting 1 0.3%
Cleridae 1 0.3%
Climate and weather statistics 1 0.3%
Climate change vulnerability 1 0.3%
Climate of India 1 0.3%
Climatology 1 0.3%
Clinical medicine 1 0.3%
Closed-circuit television 1 0.3%
Cloud computing 1 0.3%
Clutch 1 0.3%
Coal gasification 1 0.3%
Coal phase-out 1 0.3%
Coal preparation plant 1 0.3%
Coal seam fire 1 0.3%
Coal-fired power station 1 0.3%
Coalescer 1 0.3%
Coalworker's pneumoconiosis 1 0.3%
Coastal flood 1 0.3%
Coca 1 0.3%
Coca eradication 1 0.3%
Cocaine 1 0.3%
Coefficient of determination 1 0.3%
Cofiring 1 0.3%
Cognitive science 1 0.3%
Coke (fuel) 1 0.3%
Collar (animal) 1 0.3%
Colloid 1 0.3%
Colonia (United States) 1 0.3%
Color 1 0.3%
Columbia Accident Investigation Board 1 0.3%
Committed dose 1 0.3%
Communication protocol 1 0.3%
Community 1 0.3%
Community Choice Aggregation 1 0.3%
Community forestry 1 0.3%
Community solar farm 1 0.3%
Commuting 1 0.3%
Compact of Free Association 1 0.3%
Competence (human resources) 1 0.3%
Compost 1 0.3%
Comprehensive Everglades Restoration Plan 1 0.3%
Computational fluid dynamics 1 0.3%
Computer data storage 1 0.3%
Computer-aided design 1 0.3%
Concentrated solar power 1 0.3%
Conceptual model 1 0.3%
Condition monitoring 1 0.3%
Confectionery 1 0.3%
Conformance testing 1 0.3%
Conformity 1 0.3%
Confounding 1 0.3%
Consensus decision-making 1 0.3%
Constructed wetland 1 0.3%
Consultant 1 0.3%
Contaminated land 1 0.3%
Contour plowing 1 0.3%
Contractual term 1 0.3%
Contrail 1 0.3%
Control of Major Accident Hazards Regulations 2015 1 0.3%
Cooking 1 0.3%
Coolant 1 0.3%
Cooperative 1 0.3%
Copenhagen Accord 1 0.3%
Copper 1 0.3%
Coprecipitation 1 0.3%
Corporate governance 1 0.3%
Corrective and preventive action 1 0.3%
Correlation 1 0.3%
Correlation and dependence 1 0.3%
Cotton 1 0.3%
Counterfeit consumer goods 1 0.3%
Creativity 1 0.3%
Credit 1 0.3%
Crop diversity 1 0.3%
Crop residue 1 0.3%
Cryosphere 1 0.3%
Crystalline silicon 1 0.3%
Cultural heritage 1 0.3%
Customs 1 0.3%
Cutting fluid 1 0.3%
Cyberwarfare 1 0.3%
Cycling 1 0.3%
Cyclone Gita 1 0.3%
Cyclone Idai 1 0.3%
Cyclone Leon–Eline 1 0.3%
Cylinder (firearms) 1 0.3%
DICE model 1 0.3%
DLVO theory 1 0.3%
DPT vaccine 1 0.3%
Datacasting 1 0.3%
Daubert standard 1 0.3%
Davis–Bacon Act of 1931 1 0.3%
Debt 1 0.3%
Deepwater Horizon oil spill 1 0.3%
Degasification 1 0.3%
Dehydration 1 0.3%
Delivery (commerce) 1 0.3%
Demand response 1 0.3%
Demolition 1 0.3%
Dendroctonus valens 1 0.3%
Dental fluorosis 1 0.3%
Dentistry 1 0.3%
Deposition (geology) 1 0.3%
Derivative (finance) 1 0.3%
Derrick 1 0.3%
Desert 1 0.3%
Determinants of health 1 0.3%
Developed country 1 0.3%
Diabetes 1 0.3%
Diagnosis of HIV/AIDS 1 0.3%
Dichloromethane 1 0.3%
Diesel engine 1 0.3%
Dietary fiber 1 0.3%
Dietary supplement 1 0.3%
Digital Earth 1 0.3%
Digital economy 1 0.3%
Digital electronics 1 0.3%
Direct air capture 1 0.3%
Direct reduced iron 1 0.3%
Disability-adjusted life year 1 0.3%
Disaster response 1 0.3%
Discounted cash flow 1 0.3%
Discrimination 1 0.3%
Dispersion (chemistry) 1 0.3%
District heating 1 0.3%
Disturbance (ecology) 1 0.3%
Ditch 1 0.3%
Dog fighting in the United States 1 0.3%
Dolphin 1 0.3%
Domestic pig 1 0.3%
Domestic violence 1 0.3%
Domesticated animals 1 0.3%
Double layer (surface science) 1 0.3%
Drain-waste-vent system 1 0.3%
Dredging 1 0.3%
Drinking straw 1 0.3%
Driving 1 0.3%
Drowning 1 0.3%
Drug overdose 1 0.3%
Dryland farming 1 0.3%
Duct (flow) 1 0.3%
Dust Bowl 1 0.3%
E-commerce 1 0.3%
ELISA 1 0.3%
EU FLEGT Action Plan 1 0.3%
EUR-Lex 1 0.3%
Earth rainfall climatology 1 0.3%
East Coast fever 1 0.3%
Ecological design 1 0.3%
Economic rent 1 0.3%
Economic surplus 1 0.3%
Economics of global warming 1 0.3%
Economy of Africa 1 0.3%
Economy of India 1 0.3%
Economy of New Zealand 1 0.3%
Ecosystem management 1 0.3%
Ecosystem-based adaptation 1 0.3%
Ecosystem-based management 1 0.3%
Eddy covariance 1 0.3%
Eildon Dam 1 0.3%
El Niño 1 0.3%
El Niño–Southern Oscillation 1 0.3%
Electric arc furnace 1 0.3%
Electric battery 1 0.3%
Electric energy consumption 1 0.3%
Electric motor 1 0.3%
Electric power 1 0.3%
Electric power distribution 1 0.3%
Electrical conductor 1 0.3%
Electrical conduit 1 0.3%
Electrical connector 1 0.3%
Electricity pricing 1 0.3%
Electron 1 0.3%
Electron microscope 1 0.3%
Electron shell 1 0.3%
Electronic Product Environmental Assessment Tool 1 0.3%
Electronics 1 0.3%
Electroplating 1 0.3%
Ellipsometry 1 0.3%
Emerald ash borer 1 0.3%
Emergency Management Institute 1 0.3%
Emergency communication system 1 0.3%
Emerging technologies 1 0.3%
Enbridge Line 5 1 0.3%
Enbridge Northern Gateway Pipelines 1 0.3%
Endocytosis 1 0.3%
Endothelium 1 0.3%
Energy audit 1 0.3%
Energy demand management 1 0.3%
Energy economics 1 0.3%
Energy in India 1 0.3%
Energy intensity 1 0.3%
Energy modeling 1 0.3%
Energy policy of the European Union 1 0.3%
Energy poverty 1 0.3%
Energy service company 1 0.3%
Energy subsidy 1 0.3%
Energy system 1 0.3%
Energy transition 1 0.3%
Engineering Critical Assessment 1 0.3%
Enterprise resource planning 1 0.3%
Environment Protection and Biodiversity Conservation Act 1999 1 0.3%
Environmental design 1 0.3%
Environmental economics 1 0.3%
Environmental education 1 0.3%
Environmental epidemiology 1 0.3%
Environmental impact of pharmaceuticals and personal care products 1 0.3%
Environmental impact statement 1 0.3%
Environmental issues with water 1 0.3%
Environmental noise 1 0.3%
Environmental scanning electron microscope 1 0.3%
Epicormic shoot 1 0.3%
Epidemic 1 0.3%
Equipment 1 0.3%
Eric Garcetti 1 0.3%
Estuary 1 0.3%
Eurocodes 1 0.3%
Evolution 1 0.3%
Expanded Program on Immunization 1 0.3%
Expected utility hypothesis 1 0.3%
Expert 1 0.3%
Expiration date 1 0.3%
Exploration geophysics 1 0.3%
Explosion 1 0.3%
Expo 2015 1 0.3%
Exposure (photography) 1 0.3%
External ballistics 1 0.3%
Extractor (firearms) 1 0.3%
Extrapolation 1 0.3%
Eye protection 1 0.3%
FDA warning letter 1 0.3%
FLUXNET 1 0.3%
Factory 1 0.3%
Famine 1 0.3%
Fan (machine) 1 0.3%
Farm Credit System 1 0.3%
Farmers' suicides in India 1 0.3%
Fashion 1 0.3%
Fax 1 0.3%
Feasibility study 1 0.3%
Fecal sludge management 1 0.3%
Federal Assault Weapons Ban 1 0.3%
Federal Food, Drug, and Cosmetic Act 1 0.3%
Feed-in tariffs in Germany 1 0.3%
Feedlot 1 0.3%
Filtration 1 0.3%
Financial adviser 1 0.3%
Financial analyst 1 0.3%
Financial audit 1 0.3%
Financial statement 1 0.3%
Fine (penalty) 1 0.3%
Fire prevention 1 0.3%
Fire-adapted communities 1 0.3%
Fish 1 0.3%
Fish farming 1 0.3%
Five-Year Plans of India 1 0.3%
Flash flood guidance system 1 0.3%
Flavonoid 1 0.3%
Floating liquefied natural gas 1 0.3%
Flocculation 1 0.3%
Florida Bay 1 0.3%
Flour 1 0.3%
Fluid dynamics 1 0.3%
Fluid power 1 0.3%
Fluoride 1 0.3%
Fluorometer 1 0.3%
Fly ash 1 0.3%
Fly system 1 0.3%
Folate 1 0.3%
Food choice 1 0.3%
Food desert 1 0.3%
Food extrusion 1 0.3%
Food ingredients 1 0.3%
Food loss and waste 1 0.3%
Food processing 1 0.3%
Food sovereignty 1 0.3%
Food systems 1 0.3%
Food web 1 0.3%
Foodborne illness 1 0.3%
Foods 1 0.3%
Foot (unit) 1 0.3%
Foot-and-mouth disease 1 0.3%
Foreign animal disease 1 0.3%
Foreign direct investment 1 0.3%
Forensic identification 1 0.3%
Forensic science 1 0.3%
Forest Legacy Program 1 0.3%
Fossil fuel power station 1 0.3%
Fourier-transform infrared spectroscopy 1 0.3%
Freeze-drying 1 0.3%
Freshwater acidification 1 0.3%
Frostbite 1 0.3%
Fruit 1 0.3%
Fuel gas 1 0.3%
Functional safety 1 0.3%
Fungicide 1 0.3%
Furlough 1 0.3%
Fusarium 1 0.3%
Fusarium culmorum 1 0.3%
Fusarium ear blight 1 0.3%
Future problems 1 0.3%
Futures contract 1 0.3%
Gallon 1 0.3%
Gas cylinder 1 0.3%
Gas metal arc welding 1 0.3%
Gas tungsten arc welding 1 0.3%
Gasification 1 0.3%
Gauge (firearms) 1 0.3%
Gear 1 0.3%
Gear cutting 1 0.3%
General contractor 1 0.3%
Genetically modified food 1 0.3%
Genetically modified maize 1 0.3%
Genetically modified organism 1 0.3%
Genome editing 1 0.3%
Geochemistry 1 0.3%
Geography 1 0.3%
Geomatics 1 0.3%
Geophysics 1 0.3%
Geothermal energy 1 0.3%
Geothermal power 1 0.3%
Gibberella zeae 1 0.3%
Glacier 1 0.3%
Glacier mass balance 1 0.3%
Global Positioning System 1 0.3%
Global Precipitation Measurement 1 0.3%
Global change 1 0.3%
Global natural environment 1 0.3%
Glock 1 0.3%
Glove 1 0.3%
Glyphosate-based herbicides 1 0.3%
Gold 1 0.3%
Gold mining 1 0.3%
Good manufacturing practice 1 0.3%
Goulburn River 1 0.3%
Government budget balance 1 0.3%
Government procurement in the United States 1 0.3%
Government shutdowns in the United States 1 0.3%
Graduate school 1 0.3%
Grain drying 1 0.3%
Grassland 1 0.3%
Green New Deal 1 0.3%
Green job 1 0.3%
Green recovery 1 0.3%
Green roof 1 0.3%
Grid energy storage 1 0.3%
Grocery store 1 0.3%
Ground (electricity) 1 0.3%
Growing season 1 0.3%
Gun control 1 0.3%
Gun politics in the United States 1 0.3%
Gun violence in the United States 1 0.3%
HIV/AIDS 1 0.3%
Half-life 1 0.3%
Hammer (firearms) 1 0.3%
Handrail 1 0.3%
Harassment 1 0.3%
Hard hat 1 0.3%
Hardware-in-the-loop simulation 1 0.3%
Harm 1 0.3%
Hayward Fault Zone 1 0.3%
Hazard analysis 1 0.3%
Hazard analysis and critical control points 1 0.3%
Health Hazard Evaluation Program 1 0.3%
Health effects from noise 1 0.3%
Health in All Policies 1 0.3%
Hearing loss 1 0.3%
Hearing protection device 1 0.3%
Heat exchanger 1 0.3%
Heat recovery ventilation 1 0.3%
Heat sink 1 0.3%
Heat stroke 1 0.3%
Heat treating 1 0.3%
Heating degree day 1 0.3%
Heavy metals 1 0.3%
Hepatocyte 1 0.3%
Heroin 1 0.3%
Hexabromocyclododecane 1 0.3%
Hexavalent chromium 1 0.3%
Hierarchy of hazard controls 1 0.3%
High voltage 1 0.3%
Hilo, Hawaii 1 0.3%
Himalayas 1 0.3%
History 1 0.3%
Holocene extinction 1 0.3%
Homelessness 1 0.3%
Homicide 1 0.3%
Honey bee 1 0.3%
Hospital 1 0.3%
Human musculoskeletal system 1 0.3%
Humanities 1 0.3%
Hunting 1 0.3%
Hurricane Harvey 1 0.3%
Hurricane Irma 1 0.3%
Hurricane Ivan 1 0.3%
Hurricane Maria 1 0.3%
Hydraulic engineering 1 0.3%
Hydrocarbon exploration 1 0.3%
Hydrogen economy 1 0.3%
Hydrogen peroxide 1 0.3%
Hydrogeology 1 0.3%
Hydrology and urban planning 1 0.3%
Hydropower 1 0.3%
Hydrothermal carbonization 1 0.3%
Hydroxide 1 0.3%
Hygiene 1 0.3%
Hyperthermia 1 0.3%
Hypothesis 1 0.3%
IEC 60601 1 0.3%
IEC 61508 1 0.3%
IPCC Fourth Assessment Report 1 0.3%
ISO 50001 1 0.3%
ISO 9000 1 0.3%
ISO/IEC 17025 1 0.3%
Ice pack 1 0.3%
Illegal drug trade 1 0.3%
Illegal logging 1 0.3%
Immune system 1 0.3%
Immunization 1 0.3%
Imperial units 1 0.3%
In vitro 1 0.3%
Incidence (epidemiology) 1 0.3%
Incident management 1 0.3%
Incoterms 1 0.3%
Index-based insurance 1 0.3%
Indian reservation 1 0.3%
Indigenous Australians 1 0.3%
Indirect costs 1 0.3%
Individual retirement account 1 0.3%
Induction motor 1 0.3%
Inductively coupled plasma mass spectrometry 1 0.3%
Industrial processes 1 0.3%
Industrial relations 1 0.3%
Industrial symbiosis 1 0.3%
Industry 1 0.3%
Infant mortality 1 0.3%
Infectious bursal disease 1 0.3%
Inflammation 1 0.3%
Influenza A virus subtype H1N1 1 0.3%
Informal economy 1 0.3%
Information Technology Management Reform Act of 1996 1 0.3%
Information asymmetry 1 0.3%
Infrared astronomy 1 0.3%
Infrared spectroscopy 1 0.3%
Input/output 1 0.3%
Input–output model 1 0.3%
Insecticide 1 0.3%
Insulator (electricity) 1 0.3%
Insulin resistance 1 0.3%
Integrated risk information system 1 0.3%
Intended nationally determined contributions 1 0.3%
Intensive pig farming 1 0.3%
Interlock (engineering) 1 0.3%
International Building Code 1 0.3%
International Treaty on Plant Genetic Resources for Food and Agriculture 1 0.3%
International development 1 0.3%
International environmental agreement 1 0.3%
Internet forum 1 0.3%
Interstate 85 1 0.3%
Ionization 1 0.3%
Iron 1 0.3%
Island 1 0.3%
James Clerk Maxwell Telescope 1 0.3%
Japanese Industrial Standards 1 0.3%
Javan mongoose 1 0.3%
Joint Entrance Examination – Advanced 1 0.3%
Joint venture 1 0.3%
Jointer 1 0.3%
Judgment (law) 1 0.3%
Karratha, Western Australia 1 0.3%
Kaya identity 1 0.3%
Kelp 1 0.3%
Kelp forest 1 0.3%
Kilowatt hour 1 0.3%
Kimberley (Western Australia) 1 0.3%
Kingdoms (biology) 1 0.3%
Knowledge economy 1 0.3%
Knowledge management 1 0.3%
Kratié Province 1 0.3%
LTE (telecommunication) 1 0.3%
Laguna de Bay 1 0.3%
Lake Okeechobee 1 0.3%
Land development 1 0.3%
Land grabbing 1 0.3%
Land reclamation 1 0.3%
Land trust 1 0.3%
Land-grant university 1 0.3%
Landfill diversion 1 0.3%
Lanzarote 1 0.3%
Las Piñas–Parañaque Critical Habitat and Ecotourism Area 1 0.3%
Laser-induced breakdown spectroscopy 1 0.3%
Lathe 1 0.3%
Lava 1 0.3%
Lawn mower 1 0.3%
Lawsuit 1 0.3%
Lawyer 1 0.3%
Layoff 1 0.3%
Lead poisoning 1 0.3%
Leaf 1 0.3%
Leaf blower 1 0.3%
Leak 1 0.3%
Legal person 1 0.3%
Leptospermum scoparium 1 0.3%
Level of service 1 0.3%
Level of service (transportation) 1 0.3%
Levelized cost of energy 1 0.3%
Lever action 1 0.3%
Liability insurance 1 0.3%
Lien 1 0.3%
Life expectancy 1 0.3%
Lifting Operations and Lifting Equipment Regulations 1998 1 0.3%
Lighting 1 0.3%
Limestone 1 0.3%
Linear no-threshold model 1 0.3%
Lipid 1 0.3%
Lipid peroxidation 1 0.3%
Lipoprotein 1 0.3%
Liquid–liquid extraction 1 0.3%
Lithium-ion battery 1 0.3%
Liver 1 0.3%
Llano Estacado 1 0.3%
Loan waiver 1 0.3%
Local government 1 0.3%
Lockout-tagout 1 0.3%
Logo 1 0.3%
Loss and damage 1 0.3%
Lotion 1 0.3%
Low-carbon fuel standard 1 0.3%
Low-pressure area 1 0.3%
Lumber 1 0.3%
Lung 1 0.3%
Lung cancer 1 0.3%
MSRAM 1 0.3%
Machinery Directive 1 0.3%
Magnesium 1 0.3%
Mains electricity 1 0.3%
Maintenance philosophy 1 0.3%
Malting 1 0.3%
Mammal 1 0.3%
Management consulting 1 0.3%
Manas River 1 0.3%
Manganese 1 0.3%
Manganism 1 0.3%
Manila Bay 1 0.3%
Manila Trench 1 0.3%
Marine Corps Air Ground Combat Center Twentynine Palms 1 0.3%
Marine Mammal Protection Act 1 0.3%
Marine debris 1 0.3%
Marine pollution 1 0.3%
Maritime Transportation Security Act of 2002 1 0.3%
Market access 1 0.3%
Market analysis 1 0.3%
Market surveillance (products) 1 0.3%
Market-based environmental policy instruments 1 0.3%
Mass Rapid Transit (Singapore) 1 0.3%
Material efficiency 1 0.3%
Material handling 1 0.3%
Material-handling equipment 1 0.3%
Materials science 1 0.3%
Mathematical model 1 0.3%
Mathematics 1 0.3%
Maximum sustained wind 1 0.3%
Mean 1 0.3%
Mechanism (engineering) 1 0.3%
Medicaid 1 0.3%
Medical specialties 1 0.3%
Medical test 1 0.3%
Medication 1 0.3%
Mediterranean Sea 1 0.3%
Mekong Delta 1 0.3%
Melbourne 1 0.3%
Mercury regulation in the United States 1 0.3%
Merino 1 0.3%
Mesothelioma 1 0.3%
Meta-analysis 1 0.3%
Metabolism 1 0.3%
Metabolomics 1 0.3%
Metadata 1 0.3%
Metagenomics 1 0.3%
Metal lathe 1 0.3%
Metallurgy 1 0.3%
Metro Manila 1 0.3%
Microalgae 1 0.3%
Microbiome 1 0.3%
Microgeneration 1 0.3%
Micrometer 1 0.3%
Micronesia 1 0.3%
Micropropagation 1 0.3%
Microsoft Excel 1 0.3%
Migrant worker 1 0.3%
Mill (grinding) 1 0.3%
Millennium Development Goals 1 0.3%
Millet 1 0.3%
Milling (machining) 1 0.3%
Millwright 1 0.3%
Mine reclamation 1 0.3%
Mini-grids 1 0.3%
Minimum wage 1 0.3%
Mirror 1 0.3%
Mission critical 1 0.3%
Mite 1 0.3%
Mitsubishi SpaceJet 1 0.3%
Mixed liquor suspended solids 1 0.3%
Mobile app 1 0.3%
Mobile phone 1 0.3%
Mobility as a service 1 0.3%
Modified Mercalli intensity scale 1 0.3%
Monoculture 1 0.3%
Monopoly 1 0.3%
Monsoon of South Asia 1 0.3%
Morphine 1 0.3%
Morrill Land-Grant Acts 1 0.3%
Mortality rate 1 0.3%
Motion capture 1 0.3%
Motor oil 1 0.3%
Motorcycle 1 0.3%
Mount Pinatubo 1 0.3%
Mountain pine beetle 1 0.3%
Moving parts 1 0.3%
Mudflat 1 0.3%
Mulch 1 0.3%
Multidimensional Poverty Index 1 0.3%
Multiomics 1 0.3%
Multispectral image 1 0.3%
Murder 1 0.3%
Murujuga 1 0.3%
Mutation 1 0.3%
Muzzle brake 1 0.3%
Mycangium 1 0.3%
Mycology 1 0.3%
Mycotoxin 1 0.3%
NEWater 1 0.3%
Naloxone 1 0.3%
Nam Ngum Dam 1 0.3%
Nannochloropsis 1 0.3%
Nanoinformatics 1 0.3%
Nanotoxicology 1 0.3%
National Firearms Act 1 0.3%
National Historic Preservation Act of 1966 1 0.3%
National Incident Management System 1 0.3%
National Organic Program 1 0.3%
National Petroleum Reserve–Alaska 1 0.3%
National School Lunch Act 1 0.3%
National World War I Memorial (Washington, D.C.) 1 0.3%
National security 1 0.3%
Natural capital accounting 1 0.3%
Natural heritage 1 0.3%
Natural reservoir 1 0.3%
Needlestick injury 1 0.3%
Negligence 1 0.3%
Neoplasm 1 0.3%
Net neutrality 1 0.3%
Neutralization (chemistry) 1 0.3%
New Exploration Licensing Policy 1 0.3%
New product development 1 0.3%
Next Generation EU 1 0.3%
Nitrate 1 0.3%
Nitrogen 1 0.3%
Nitrogen cycle 1 0.3%
No-till farming 1 0.3%
Noise control 1 0.3%
Non-lethal weapon 1 0.3%
Nordic countries 1 0.3%
Northern Powerhouse Rail 1 0.3%
Novel food 1 0.3%
Nuclear fusion 1 0.3%
Nuclear magnetic resonance spectroscopy 1 0.3%
Nuclear proliferation 1 0.3%
Nuclear weapon 1 0.3%
Numerical weather prediction 1 0.3%
Nursing 1 0.3%
Nutrient cycle 1 0.3%
Nutrient management 1 0.3%
Oak 1 0.3%
Oat 1 0.3%
Occupational fatality 1 0.3%
Occupational injury 1 0.3%
Occupational noise 1 0.3%
Ocean acidification 1 0.3%
Oceanography 1 0.3%
Ogallala Aquifer 1 0.3%
Oil Pollution Act of 1990 1 0.3%
Oil platform 1 0.3%
Oil sands 1 0.3%
Online auction 1 0.3%
Open-pit mining 1 0.3%
Operating theater 1 0.3%
Operations management 1 0.3%
Opium 1 0.3%
Opportunity cost 1 0.3%
Optical fiber 1 0.3%
Optical microscope 1 0.3%
Optimism 1 0.3%
Option (finance) 1 0.3%
Oral hygiene 1 0.3%
Organ (biology) 1 0.3%
Organism 1 0.3%
Organization development 1 0.3%
Oromia Region 1 0.3%
Ounce 1 0.3%
Outer space 1 0.3%
Overexploitation 1 0.3%
Overfishing 1 0.3%
Overhead power line 1 0.3%
Overview of gun laws by nation 1 0.3%
Ownership 1 0.3%
Oxidative stress 1 0.3%
Oxidizing agents 1 0.3%
Oxy-fuel welding and cutting 1 0.3%
Oxygen 1 0.3%
Oyster 1 0.3%
P-value 1 0.3%
PET bottle recycling 1 0.3%
Pacific Ocean 1 0.3%
Package boiler 1 0.3%
Palm oil 1 0.3%
Pandemic 1 0.3%
Papaver somniferum 1 0.3%
Parasitic worm 1 0.3%
Paris 1 0.3%
Participatory design 1 0.3%
Particle aggregation 1 0.3%
Parts-per notation 1 0.3%
Passivation (chemistry) 1 0.3%
Patriot Act 1 0.3%
Paul Gosar 1 0.3%
Peak ground acceleration 1 0.3%
Peak oil 1 0.3%
Peanut 1 0.3%
Peat 1 0.3%
Pellet (air gun) 1 0.3%
Penetrating trauma 1 0.3%
Penicillium verrucosum 1 0.3%
Performance appraisal 1 0.3%
Performance indicator 1 0.3%
Permaculture 1 0.3%
Permethrin 1 0.3%
Permissible exposure limit 1 0.3%
Perna canaliculus 1 0.3%
Perovskite solar cell 1 0.3%
Persistent, bioaccumulative and toxic substances 1 0.3%
Personally identifiable information 1 0.3%
Pest control 1 0.3%
Pesticide drift 1 0.3%
Pesticide regulation in the United States 1 0.3%
Pesticide residue 1 0.3%
Pesticide resistance 1 0.3%
Petroleum Administration for Defense Districts 1 0.3%
Phagocytosis 1 0.3%
Pharmacokinetics 1 0.3%
Pharmacology 1 0.3%
Pharmacopoeia 1 0.3%
Pharmacovigilance 1 0.3%
Pharmacy 1 0.3%
Phosgene 1 0.3%
Phosphate 1 0.3%
Phosphorite 1 0.3%
Photobioreactor 1 0.3%
Physiologically based pharmacokinetic modelling 1 0.3%
Phytochemical 1 0.3%
Pig farming 1 0.3%
Pigging 1 0.3%
Pine 1 0.3%
Pint 1 0.3%
Pinus contorta 1 0.3%
Pinus jeffreyi 1 0.3%
Placard 1 0.3%
Planned unit development 1 0.3%
Plant cuticle 1 0.3%
Plant genetic resources 1 0.3%
Plant tissue culture 1 0.3%
Plants 1 0.3%
Plastic recycling 1 0.3%
Pledge of Allegiance 1 0.3%
Plough 1 0.3%
Point of care 1 0.3%
Pollination 1 0.3%
Polychlorinated biphenyl 1 0.3%
Polychlorinated dibenzodioxins 1 0.3%
Polyethylene terephthalate 1 0.3%
Polysaccharide 1 0.3%
Polyvinyl chloride 1 0.3%
Port of Long Beach 1 0.3%
Port security 1 0.3%
Portable appliance testing 1 0.3%
Portable emissions measurement system 1 0.3%
Positive train control 1 0.3%
Post-traumatic stress disorder 1 0.3%
Potential-induced degradation 1 0.3%
Poultry farming 1 0.3%
Pound (mass) 1 0.3%
Power inverter 1 0.3%
Power supply 1 0.3%
Pradhan Mantri Awas Yojana 1 0.3%
Prairie 1 0.3%
Precautionary principle 1 0.3%
Precipitation (chemistry) 1 0.3%
Predation 1 0.3%
Predictive analytics 1 0.3%
Predictive maintenance 1 0.3%
Prefabrication 1 0.3%
Premium efficiency 1 0.3%
Present value 1 0.3%
President of the United States 1 0.3%
Prevalence 1 0.3%
Price elasticity of demand 1 0.3%
Price of oil 1 0.3%
Primary industries 1 0.3%
Primary production 1 0.3%
Primer (paint) 1 0.3%
Printed circuit board 1 0.3%
Printz v. United States 1 0.3%
Prison 1 0.3%
Privacy 1 0.3%
Probability 1 0.3%
Probability distribution 1 0.3%
Problem solving 1 0.3%
Process modeling 1 0.3%
Product lifecycle 1 0.3%
Professional diving 1 0.3%
Profit (economics) 1 0.3%
Program evaluation 1 0.3%
Progress 1 0.3%
Project 25 1 0.3%
Project Bioshield Act 1 0.3%
Project management 1 0.3%
Protein 1 0.3%
Proteomics 1 0.3%
Psoriasis 1 0.3%
Psychological stress 1 0.3%
Pteridium aquilinum 1 0.3%
Public consultation 1 0.3%
Public good (economics) 1 0.3%
Public policy 1 0.3%
Public utility 1 0.3%
Pulp (paper) 1 0.3%
Pulse oximetry 1 0.3%
Pupa 1 0.3%
Purchasing power parity 1 0.3%
Pygmy hog 1 0.3%
Pyrolysis 1 0.3%
Qualitative research 1 0.3%
Quality of life 1 0.3%
Quenching 1 0.3%
Questionnaire 1 0.3%
Radar 1 0.3%
Radiation protection 1 0.3%
Radiation-induced cancer 1 0.3%
Radioactive contamination 1 0.3%
Radioactive decay 1 0.3%
Radioactive waste 1 0.3%
Radiographer 1 0.3%
Radium 1 0.3%
Radon 1 0.3%
Rainfed agriculture 1 0.3%
Rainscreen 1 0.3%
Rainwater harvesting 1 0.3%
Raman spectroscopy 1 0.3%
Random sample consensus 1 0.3%
Randomness 1 0.3%
Rapeseed 1 0.3%
Rapid transit 1 0.3%
Rate of return 1 0.3%
Raw material 1 0.3%
Real estate broker 1 0.3%
Reamer 1 0.3%
Reasonable person 1 0.3%
Reboot 1 0.3%
Receptionist 1 0.3%
Recloser 1 0.3%
Recoil 1 0.3%
Records management 1 0.3%
Red meat 1 0.3%
Reference Daily Intake 1 0.3%
Reference dose 1 0.3%
Reflective surfaces (climate engineering) 1 0.3%
Refrigerator 1 0.3%
Regenerative agriculture 1 0.3%
Regional Input–Output Modeling System 1 0.3%
Regional transmission organization (North America) 1 0.3%
Reinforced concrete 1 0.3%
Reinsurance 1 0.3%
Relative humidity 1 0.3%
Reliability-centered maintenance 1 0.3%
Remote work 1 0.3%
Remotely operated underwater vehicle 1 0.3%
Renewable Fuel Standard (United States) 1 0.3%
Renewable energy commercialization 1 0.3%
Reorganization plan of United States Army 1 0.3%
Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 1 0.3%
Request for proposal 1 0.3%
Residence time 1 0.3%
Residual-current device 1 0.3%
Resource extraction 1 0.3%
Respiratory droplet 1 0.3%
Restoration of the Everglades 1 0.3%
Restriction of Hazardous Substances Directive 1 0.3%
Retreat of glaciers since 1850 1 0.3%
Reuse of human excreta 1 0.3%
Revenue 1 0.3%
Revised National Tuberculosis Control Program 1 0.3%
Rifling 1 0.3%
Rimfire ammunition 1 0.3%
Ring of Fire 1 0.3%
Rio Convention 1 0.3%
Road surface 1 0.3%
Rock (geology) 1 0.3%
Rollover 1 0.3%
Roof 1 0.3%
Rotterdam Convention 1 0.3%
Route of administration 1 0.3%
Ruminant 1 0.3%
Rust 1 0.3%
SCADA 1 0.3%
Safety integrity level 1 0.3%
Safety sign 1 0.3%
Safety stock 1 0.3%
Salinity in Australia 1 0.3%
Salt spray test 1 0.3%
San Fernando Valley 1 0.3%
Sand 1 0.3%
Sand filter 1 0.3%
Sandy Hook Elementary School shooting 1 0.3%
Satellite imagery 1 0.3%
Savanna 1 0.3%
Saw 1 0.3%
Sawed-off shotgun 1 0.3%
Scale-invariant feature transform 1 0.3%
Scenario planning 1 0.3%
Scenedesmus 1 0.3%
School 1 0.3%
School meal programs in the United States 1 0.3%
Scientific control 1 0.3%
Scrap 1 0.3%
Scrapie 1 0.3%
Screw 1 0.3%
Screw thread 1 0.3%
Scuba diving 1 0.3%
Seafood 1 0.3%
Seagrass 1 0.3%
Search engine optimization 1 0.3%
Season 1 0.3%
Second Amendment to the United States Constitution 1 0.3%
Secondary sector of the economy 1 0.3%
Secondary treatment 1 0.3%
Security (finance) 1 0.3%
Security alarm 1 0.3%
Seismic hazard 1 0.3%
Seismic magnitude scales 1 0.3%
Seismic retrofit 1 0.3%
Seismic risk 1 0.3%
Selective breeding 1 0.3%
Self-care 1 0.3%
Semi-automatic firearm 1 0.3%
Semi-automatic pistol 1 0.3%
Sensitive Security Information 1 0.3%
Sensitive but unclassified 1 0.3%
Sensor 1 0.3%
Separator (oil production) 1 0.3%
Septic tank 1 0.3%
Sequencing batch reactor 1 0.3%
Servomechanism 1 0.3%
Session Initiation Protocol 1 0.3%
Shaft mining 1 0.3%
Shampoo 1 0.3%
Shared mobility 1 0.3%
Shared transport 1 0.3%
Shear wall 1 0.3%
Shelf life 1 0.3%
Shielded metal arc welding 1 0.3%
Shielding gas 1 0.3%
Shifting cultivation 1 0.3%
Shikimic acid 1 0.3%
Sidewalk 1 0.3%
Silencer (firearms) 1 0.3%
Silver 1 0.3%
Silviculture 1 0.3%
Silvopasture 1 0.3%
Site selection 1 0.3%
Six Sigma 1 0.3%
Slope stability analysis 1 0.3%
Smart grid 1 0.3%
Smart growth 1 0.3%
Smoke 1 0.3%
Snag (ecology) 1 0.3%
Social cognitive theory 1 0.3%
Social cost of carbon 1 0.3%
Social discount rate 1 0.3%
Social marketing 1 0.3%
Social programs in the United States 1 0.3%
Social protection 1 0.3%
Social responsibility 1 0.3%
Social science 1 0.3%
Social work 1 0.3%
Socioeconomic status 1 0.3%
Sodium 1 0.3%
Sodium bicarbonate 1 0.3%
Soft drink 1 0.3%
Software development 1 0.3%
Soil carbon 1 0.3%
Soil fertility 1 0.3%
Soil liquefaction 1 0.3%
Soil texture 1 0.3%
Solar geoengineering 1 0.3%
Solder 1 0.3%
Soldering 1 0.3%
Solvay process 1 0.3%
Solvents 1 0.3%
Sonar 1 0.3%
Soot 1 0.3%
Spare part 1 0.3%
Speaker of the United States House of Representatives 1 0.3%
Special Report on Global Warming of 1.5 °C 1 0.3%
Species 1 0.3%
Species distribution 1 0.3%
Sporocarp (fungi) 1 0.3%
Spray (liquid drop) 1 0.3%
Stainless steel 1 0.3%
Stairs 1 0.3%
Standard score 1 0.3%
StarLink corn recall 1 0.3%
Staten Island Bluebelt 1 0.3%
States and union territories of India 1 0.3%
Statistical inference 1 0.3%
Steam engine 1 0.3%
Steelmaking 1 0.3%
Stern Review 1 0.3%
Stock (firearms) 1 0.3%
Strategy 1 0.3%
Streamflow 1 0.3%
Street 1 0.3%
Stress (biology) 1 0.3%
Strontium 1 0.3%
Structural engineering 1 0.3%
Submillimeter Array 1 0.3%
Substance of very high concern 1 0.3%
Suburb 1 0.3%
Sulfide 1 0.3%
Sunset provision 1 0.3%
Surgery 1 0.3%
Surgical mask 1 0.3%
Surveying 1 0.3%
Survival analysis 1 0.3%
Sustainable Development Goal 11 1 0.3%
Sustainable Development Goal 12 1 0.3%
Sustainable Development Goal 5 1 0.3%
Sustainable Development Goal 8 1 0.3%
Sustainable Development Goal 9 1 0.3%
Sustainable consumption 1 0.3%
Sustainable finance 1 0.3%
Sustainable living 1 0.3%
Sustainable urban planning 1 0.3%
Swachh Survekshan 1 0.3%
Swine influenza 1 0.3%
Synthetic fuel 1 0.3%
System safety 1 0.3%
Systematic review 1 0.3%
Systems engineering 1 0.3%
Systems theory 1 0.3%
Tap (valve) 1 0.3%
Taxonomy (biology) 1 0.3%
Technology readiness level 1 0.3%
Technology roadmap 1 0.3%
Telecommunication 1 0.3%
Telescope 1 0.3%
Temperate climate 1 0.3%
Tempering (metallurgy) 1 0.3%
Tenerife 1 0.3%
Tephritidae 1 0.3%
Terminal ballistics 1 0.3%
Tesla Cybertruck 1 0.3%
Tesla Model 3 1 0.3%
Tesla Model Y 1 0.3%
Tesla Supercharger 1 0.3%
Theodolite 1 0.3%
Theory 1 0.3%
Theory of change 1 0.3%
Thermal analysis 1 0.3%
Thermal efficiency 1 0.3%
Thermal power station 1 0.3%
Thermogravimetric analysis 1 0.3%
Thermometer 1 0.3%
Thermoregulation 1 0.3%
Thin-film solar cell 1 0.3%
Thirty Meter Telescope protests 1 0.3%
Thousand cankers disease 1 0.3%
Throttle 1 0.3%
Tilt up 1 0.3%
Time series 1 0.3%
Tissue engineering 1 0.3%
Title IX 1 0.3%
Tobacco smoking 1 0.3%
Tongass National Forest 1 0.3%
Tooth decay 1 0.3%
Top-down and bottom-up design 1 0.3%
Topography 1 0.3%
Tort 1 0.3%
Total maximum daily load 1 0.3%
Total organic carbon 1 0.3%
Total suspended solids 1 0.3%
Trade in services statistics 1 0.3%
Trade union 1 0.3%
Trans Mountain pipeline 1 0.3%
Transit bus 1 0.3%
Transmissible spongiform encephalopathy 1 0.3%
Transmission (medicine) 1 0.3%
Transmission tower 1 0.3%
Transparent materials 1 0.3%
Transplanting 1 0.3%
Transportation Worker Identification Credential 1 0.3%
Transportation demand management 1 0.3%
Transportation planning 1 0.3%
Tree allometry 1 0.3%
Trichloroethylene 1 0.3%
Tripod 1 0.3%
Tropical cyclone forecasting 1 0.3%
Tropics 1 0.3%
Troy weight 1 0.3%
Trunk (botany) 1 0.3%
Tuberculosis 1 0.3%
Tugboat 1 0.3%
Tunnel 1 0.3%
Turbidity 1 0.3%
Turbine 1 0.3%
Turgor pressure 1 0.3%
Two-stroke engine 1 0.3%
Type I and type II errors 1 0.3%
Types of volcanic eruptions 1 0.3%
Typhoon 1 0.3%
Typhoon Haikui 1 0.3%
Typhoon Haiyan 1 0.3%
Typhoon Mangkhut 1 0.3%
Typhoon Xangsane 1 0.3%
Ultrafiltration 1 0.3%
Ultrafine particle 1 0.3%
Ultraviolet 1 0.3%
Underwater diving 1 0.3%
Underwriting 1 0.3%
Unemployment 1 0.3%
Unfair labor practice 1 0.3%
United Kingdom Infrared Telescope 1 0.3%
United Nations Conference on Sustainable Development 1 0.3%
United States emission standards 1 0.3%
Universal background check 1 0.3%
Upper Marikina River Basin Protected Landscape 1 0.3%
Urban design 1 0.3%
Urban ecology 1 0.3%
Urban open space 1 0.3%
Urban rail transit 1 0.3%
Urban resilience 1 0.3%
Urban runoff 1 0.3%
Utility 1 0.3%
Utility pole 1 0.3%
Value of life 1 0.3%
Value-added tax 1 0.3%
Van der Waals force 1 0.3%
Vapi 1 0.3%
Varroa destructor 1 0.3%
Vector (epidemiology) 1 0.3%
Vehicle Excise Duty 1 0.3%
Vehicle emission standard 1 0.3%
Vehicle-to-grid 1 0.3%
Venison 1 0.3%
Venture capital 1 0.3%
Vertical integration 1 0.3%
Veterinarian 1 0.3%
Vientiane Province 1 0.3%
Violence 1 0.3%
Virus 1 0.3%
Vitamin 1 0.3%
Vocational education 1 0.3%
Volatility (chemistry) 1 0.3%
Voltammetry 1 0.3%
Vomitoxin 1 0.3%
Wage 1 0.3%
Wall 1 0.3%
Waste heat 1 0.3%
Waste-to-energy 1 0.3%
Wastewater quality indicators 1 0.3%
Water cycle management 1 0.3%
Water fluoridation 1 0.3%
Water supply and sanitation in the European Union 1 0.3%
Water tariff 1 0.3%
Watershed management 1 0.3%
Watt 1 0.3%
Wear 1 0.3%
Web page 1 0.3%
Well stimulation 1 0.3%
Well-being 1 0.3%
Wet-bulb temperature 1 0.3%
Whistleblower 1 0.3%
Whistleblower protection in the United States 1 0.3%
Wild fisheries 1 0.3%
Wine 1 0.3%
Winter storm 1 0.3%
Wireless ad hoc network 1 0.3%
Witch Fire 1 0.3%
Wood fuel 1 0.3%
Wool 1 0.3%
Woolsey Fire 1 0.3%
Worker Protection Standard 1 0.3%
Workers' compensation 1 0.3%
Workforce 1 0.3%
Workforce development 1 0.3%
Workington 1 0.3%
Workplace 1 0.3%
Workplace violence 1 0.3%
World Wide Web 1 0.3%
World's fair 1 0.3%
X-ray 1 0.3%
X-ray absorption near edge structure 1 0.3%
X-ray microtomography 1 0.3%
X-ray photoelectron spectroscopy 1 0.3%
X-ray spectroscopy 1 0.3%
XML 1 0.3%
XML schema 1 0.3%
Xeriscaping 1 0.3%
Xylella fastidiosa 1 0.3%
Zinc 1 0.3%
Zoning 1 0.3%
earth sciences 1 0.3%

wikitags: per year

1980

abs rel
Automation 1 100.0%
Coal 1 100.0%
Coal mining 1 100.0%
Computer 1 100.0%
Engineering 1 100.0%
Human resources 1 100.0%
Innovation 1 100.0%
Longwall mining 1 100.0%
Maintenance (technical) 1 100.0%
Microorganism 1 100.0%
Mining 1 100.0%
Nature 1 100.0%
Pump 1 100.0%
Pyrolysis 1 100.0%
Reliability engineering 1 100.0%
Research 1 100.0%
Robot 1 100.0%
Seismology 1 100.0%
System 1 100.0%
Technology 1 100.0%
Ventilation (architecture) 1 100.0%
Water 1 100.0%

1982

abs rel
Automotive safety 1 100.0%
Cigarette 1 100.0%
Decision-making 1 100.0%
Emergency management 1 100.0%
Expected utility hypothesis 1 100.0%
Flood 1 100.0%
Flood insurance 1 100.0%
Hazard 1 100.0%
Home insurance 1 100.0%
Human activities 1 100.0%
Information 1 100.0%
Information asymmetry 1 100.0%
Insurance 1 100.0%
Liquefied natural gas 1 100.0%
Market (economics) 1 100.0%
Mortgage loan 1 100.0%
Policy 1 100.0%
Poverty 1 100.0%
Probability 1 100.0%
Risk 1 100.0%
Risk assessment 1 100.0%
Road traffic safety 1 100.0%
Safety 1 100.0%
Strategy 1 100.0%
Subsidy 1 100.0%
Tax 1 100.0%
Tobacco smoking 1 100.0%
Traffic collision 1 100.0%
Utility 1 100.0%

1987

abs rel
Economy 1 100.0%
Employment 1 100.0%
Gear cutting 1 100.0%
Grinding (abrasive cutting) 1 100.0%
Input–output model 1 100.0%
Labour economics 1 100.0%
Metalworking 1 100.0%
Secondary sector of the economy 1 100.0%
Technology 1 100.0%
Tool and die maker 1 100.0%

1994

abs rel
Agriculture 1 100.0%
Biodiversity 1 100.0%
Carbon tax 1 100.0%
Climate 1 100.0%
Climate change 1 100.0%
Climate change adaptation 1 100.0%
Climate change mitigation 1 100.0%
Cost–benefit analysis 1 100.0%
DICE model 1 100.0%
Earth sciences 1 100.0%
Economics 1 100.0%
Economics of climate change 1 100.0%
Economics of climate change mitigation 1 100.0%
Economy 1 100.0%
Effects of climate change 1 100.0%
Emissions trading 1 100.0%
General circulation model 1 100.0%
Greenhouse effect 1 100.0%
Greenhouse gas 1 100.0%
Greenhouse gas emissions 1 100.0%
Human activities 1 100.0%
Mathematical optimization 1 100.0%
Natural environment 1 100.0%
Nature 1 100.0%
Physical geography 1 100.0%
Politics of climate change 1 100.0%
Sea level rise 1 100.0%
Tax 1 100.0%

1995

abs rel
Artificial objects 1 100.0%
Automation 1 100.0%
Coal 1 100.0%
Coal mining 1 100.0%
Coalworker's pneumoconiosis 1 100.0%
Employment 1 100.0%
Engineering 1 100.0%
Laboratory 1 100.0%
Longwall mining 1 100.0%
Mining 1 100.0%
Occupational safety and health 1 100.0%
Robotics 1 100.0%
Surface mining 1 100.0%
Technology 1 100.0%

1996

abs rel
Aquifer 1 100.0%
Ecology 1 100.0%
Environment 1 100.0%
Environmental remediation 1 100.0%
Environmental science 1 100.0%
Groundwater 1 100.0%
Groundwater pollution 1 100.0%
Groundwater recharge 1 100.0%
Hazard 1 100.0%
Hazardous waste 1 100.0%
Natural environment 1 100.0%
Nature 1 100.0%
Pollution 1 100.0%
Resource Conservation and Recovery Act 1 100.0%
Risk 1 100.0%
Risk assessment 1 100.0%
Soil 1 100.0%
Statistics 1 100.0%
Superfund 1 100.0%
Toxicity 1 100.0%
Waste 1 100.0%
Water 1 100.0%

1998

abs rel
Artificial objects 1 100.0%
Coal 1 100.0%
Coal mining 1 100.0%
Coal seam fire 1 100.0%
Dust 1 100.0%
Elevator 1 100.0%
Emergency management 1 100.0%
Explosive 1 100.0%
Geotechnical engineering 1 100.0%
Hazard 1 100.0%
Hoist (device) 1 100.0%
Laboratory 1 100.0%
Mercury (element) 1 100.0%
Metal 1 100.0%
Mining 1 100.0%
Noise 1 100.0%
Occupational safety and health 1 100.0%
Radar 1 100.0%
Research 1 100.0%
Shaft mining 1 100.0%
Silver 1 100.0%
Slope stability analysis 1 100.0%
Surface mining 1 100.0%
Technology 1 100.0%
Truck 1 100.0%
Ventilation (architecture) 1 100.0%

2000

abs rel
Agriculture 1 100.0%
Biomass 1 100.0%
Change 1 100.0%
Chlorofluorocarbon 1 100.0%
Climate change 1 100.0%
Climate change mitigation 1 100.0%
Climate change scenario 1 100.0%
Climate variability and change 1 100.0%
Economic growth 1 100.0%
Economics of climate change 1 100.0%
Emission intensity 1 100.0%
Environmental impact 1 100.0%
Environmental issues with fossil fuels 1 100.0%
Fossil fuel 1 100.0%
General circulation model 1 100.0%
Global environmental issues 1 100.0%
Global warming potential 1 100.0%
Greenhouse gas 1 100.0%
Greenhouse gas emissions 1 100.0%
IPCC Third Assessment Report 1 100.0%
Natural environment 1 100.0%
Nature 1 100.0%
Radiative forcing 1 100.0%
Societal collapse 1 100.0%
Special Report on Emissions Scenarios 1 100.0%
Sustainability 1 100.0%
United Nations Framework Convention on Climate Change 1 100.0%

2001

abs rel
Agriculture 2 50.0%
Air pollution 2 50.0%
Economy 2 50.0%
Human activities 2 50.0%
Natural gas 2 50.0%
Policy 2 50.0%
Poverty 2 50.0%
Resource 2 50.0%
Safety 2 50.0%
Tax 2 50.0%
Absorption (skin) 1 25.0%
Acid dissociation constant 1 25.0%
Alfalfa 1 25.0%
Aquatic ecosystem 1 25.0%
Aquifer 1 25.0%
Aromaticity 1 25.0%
Artificial materials 1 25.0%
BTX (chemistry) 1 25.0%
Bioavailability 1 25.0%
Biodegradation 1 25.0%
Biotechnology 1 25.0%
Bovine spongiform encephalopathy 1 25.0%
Butadiene 1 25.0%
Car 1 25.0%
Carbon dioxide 1 25.0%
Carbon tax 1 25.0%
Carl Moyer Memorial Air Quality Standards Attainment Program 1 25.0%
Carrot 1 25.0%
Cattle 1 25.0%
Chemical equilibrium 1 25.0%
Chemical substances 1 25.0%
Chemistry 1 25.0%
Chronic toxicity 1 25.0%
Clean Air Act (United States) 1 25.0%
Climate change 1 25.0%
Climate change mitigation 1 25.0%
Climate change policy of the United States 1 25.0%
Competition (economics) 1 25.0%
Conservation Reserve Program 1 25.0%
Cost–benefit analysis 1 25.0%
Daphnia 1 25.0%
Data quality 1 25.0%
Dose (biochemistry) 1 25.0%
Dose–response relationship 1 25.0%
Drinking water 1 25.0%
Economic growth 1 25.0%
Ecosystem 1 25.0%
Efficient energy use 1 25.0%
Electric vehicle 1 25.0%
Emission standard 1 25.0%
Emissions trading 1 25.0%
Employment 1 25.0%
Energy 1 25.0%
Energy conservation 1 25.0%
Energy development 1 25.0%
Energy industry 1 25.0%
Energy management 1 25.0%
Energy policy 1 25.0%
Energy system 1 25.0%
Engine 1 25.0%
Environmental economics 1 25.0%
Environmental protection 1 25.0%
Environmental science 1 25.0%
Exhaust gas 1 25.0%
Farm 1 25.0%
Fathead minnow 1 25.0%
Food 1 25.0%
Food safety 1 25.0%
Food security 1 25.0%
Fossil fuel 1 25.0%
Fresh water 1 25.0%
Fuel 1 25.0%
Gas chromatography 1 25.0%
Gas chromatography–mass spectrometry 1 25.0%
Gasoline 1 25.0%
Genetically modified maize 1 25.0%
Genotoxicity 1 25.0%
Geothermal power 1 25.0%
Good laboratory practice 1 25.0%
Greenhouse effect 1 25.0%
Greenhouse gas emissions 1 25.0%
Gross domestic product 1 25.0%
Groundwater 1 25.0%
Health 1 25.0%
Henry's law 1 25.0%
Horsepower 1 25.0%
Irrigation 1 25.0%
Kyoto Protocol 1 25.0%
Law 1 25.0%
Lawn 1 25.0%
Lawn mower 1 25.0%
Leaf blower 1 25.0%
Lemna 1 25.0%
Lettuce 1 25.0%
Liquid–liquid extraction 1 25.0%
Loan 1 25.0%
Low-carbon economy 1 25.0%
Market (economics) 1 25.0%
Market access 1 25.0%
Materials 1 25.0%
Meat 1 25.0%
Median lethal dose 1 25.0%
Methane 1 25.0%
Monopoly 1 25.0%
Motor oil 1 25.0%
Mutagen 1 25.0%
National Ambient Air Quality Standards 1 25.0%
Natural environment 1 25.0%
Natural resource 1 25.0%
Nature 1 25.0%
Occupational safety and health 1 25.0%
Opportunity cost 1 25.0%
Ozone 1 25.0%
Partition coefficient 1 25.0%
Physical sciences 1 25.0%
Plant 1 25.0%
Pollution 1 25.0%
Pollution prevention 1 25.0%
Polymer 1 25.0%
Polysulfone 1 25.0%
Polyvinyl chloride 1 25.0%
Population 1 25.0%
Pressure 1 25.0%
Property 1 25.0%
Public health 1 25.0%
Regulatory compliance 1 25.0%
Renewable energy 1 25.0%
Research 1 25.0%
Resource Management Act 1991 1 25.0%
Risk 1 25.0%
Rulemaking 1 25.0%
Session Initiation Protocol 1 25.0%
Social discount rate 1 25.0%
Soil 1 25.0%
Solubility 1 25.0%
Solvent 1 25.0%
Subsidy 1 25.0%
Supplemental Nutrition Assistance Program 1 25.0%
Sustainability 1 25.0%
Sustainable development 1 25.0%
Sustainable energy 1 25.0%
Toxicity 1 25.0%
Toxicology 1 25.0%
Trade 1 25.0%
Transport 1 25.0%
Tropospheric ozone 1 25.0%
Two-stroke engine 1 25.0%
United Nations Framework Convention on Climate Change 1 25.0%
United States Code 1 25.0%
United States farm bill 1 25.0%
Uruguay Round 1 25.0%
Vapor pressure 1 25.0%
Vehicle 1 25.0%
Volatile organic compound 1 25.0%
Volatility (chemistry) 1 25.0%
WIC 1 25.0%
Water 1 25.0%
Water footprint 1 25.0%
Water quality 1 25.0%
Wetland 1 25.0%
Wolf 1 25.0%
Wolf reintroduction 1 25.0%
Xeriscaping 1 25.0%

2002

abs rel
Agriculture 3 100.0%
Bovine spongiform encephalopathy 3 100.0%
Economy 3 100.0%
Food 3 100.0%
Food safety 3 100.0%
Food security 3 100.0%
Human activities 3 100.0%
Poverty 3 100.0%
Supplemental Nutrition Assistance Program 3 100.0%
United States farm bill 3 100.0%
WIC 3 100.0%
Business 2 66.7%
Computer security 2 66.7%
Crop insurance 2 66.7%
E-government 2 66.7%
Enterprise architecture 2 66.7%
Food for Peace 2 66.7%
Free trade 2 66.7%
Geographic information system 2 66.7%
Information security 2 66.7%
Insurance 2 66.7%
Internet 2 66.7%
Personal Responsibility and Work Opportunity Act 2 66.7%
Risk management 2 66.7%
Temporary Assistance for Needy Families 2 66.7%
Trade 2 66.7%
Welfare 2 66.7%
Aid 1 33.3%
Biotechnology 1 33.3%
Business process 1 33.3%
Cattle 1 33.3%
Competition (companies) 1 33.3%
Conservation Reserve Program 1 33.3%
Conservation movement 1 33.3%
Cyberwarfare 1 33.3%
Economics 1 33.3%
Employment 1 33.3%
Farm 1 33.3%
Food and drink 1 33.3%
Foot-and-mouth disease 1 33.3%
Genetic engineering 1 33.3%
Government 1 33.3%
Information Technology Management Reform Act of 1996 1 33.3%
Loan 1 33.3%
Management 1 33.3%
Market (economics) 1 33.3%
Meat 1 33.3%
Policy 1 33.3%
Public sphere 1 33.3%
Safety 1 33.3%
Social programs in the United States 1 33.3%
StarLink corn recall 1 33.3%
Subsidy 1 33.3%
Tax 1 33.3%
Uruguay Round 1 33.3%
Wolf 1 33.3%
Wolf reintroduction 1 33.3%

2003

abs rel
Absorption (skin) 2 100.0%
Acid dissociation constant 2 100.0%
Agriculture 2 100.0%
Alfalfa 2 100.0%
Aquatic ecosystem 2 100.0%
Aquifer 2 100.0%
Biodegradation 2 100.0%
Cattle 2 100.0%
Chemical substances 2 100.0%
Chemistry 2 100.0%
Chronic toxicity 2 100.0%
Daphnia 2 100.0%
Dose (biochemistry) 2 100.0%
Drinking water 2 100.0%
Fathead minnow 2 100.0%
Fresh water 2 100.0%
Gas chromatography 2 100.0%
Genotoxicity 2 100.0%
Henry's law 2 100.0%
Hypoxia (environmental) 2 100.0%
Lettuce 2 100.0%
Median lethal dose 2 100.0%
Physical sciences 2 100.0%
Soil 2 100.0%
Toxicity 2 100.0%
Toxicology 2 100.0%
Water 2 100.0%
Water quality 2 100.0%
Wetland 2 100.0%
Accuracy and precision 1 50.0%
Amine gas treating 1 50.0%
Ammonia 1 50.0%
Aromaticity 1 50.0%
BTX (chemistry) 1 50.0%
Bioavailability 1 50.0%
Butadiene 1 50.0%
Carbon dioxide 1 50.0%
Carcinogen 1 50.0%
Carrot 1 50.0%
Cereal 1 50.0%
Chemical industry 1 50.0%
Chromatography 1 50.0%
Corrosion 1 50.0%
Dairy cattle 1 50.0%
Detection limit 1 50.0%
Dose–response relationship 1 50.0%
Emulsion 1 50.0%
Gas chromatography–mass spectrometry 1 50.0%
Good laboratory practice 1 50.0%
Groundwater 1 50.0%
High-performance liquid chromatography 1 50.0%
In vitro 1 50.0%
Irrigation 1 50.0%
Lemna 1 50.0%
Lotion 1 50.0%
Mutagen 1 50.0%
Mutation 1 50.0%
Natural gas 1 50.0%
Neoplasm 1 50.0%
Partition coefficient 1 50.0%
Plant 1 50.0%
Polymer 1 50.0%
Polysulfone 1 50.0%
Route of administration 1 50.0%
Solubility 1 50.0%
Solvent 1 50.0%
Surfactant 1 50.0%
Type I and type II errors 1 50.0%
Vapor pressure 1 50.0%
Water footprint 1 50.0%

2004

abs rel
Agriculture 4 80.0%
Bovine spongiform encephalopathy 3 60.0%
Economy 3 60.0%
Food 3 60.0%
Food safety 3 60.0%
Food security 3 60.0%
Health 3 60.0%
Animal slaughter 2 40.0%
Carbon dioxide 2 40.0%
Carbon sink 2 40.0%
Climate 2 40.0%
Climate change 2 40.0%
Combustion 2 40.0%
Conservation Reserve Program 2 40.0%
Environmental science 2 40.0%
Food and drink 2 40.0%
Forest 2 40.0%
Fossil fuel 2 40.0%
Greenhouse gas 2 40.0%
Human activities 2 40.0%
Livestock 2 40.0%
Meteorology 2 40.0%
Natural environment 2 40.0%
Nature 2 40.0%
Physical geography 2 40.0%
Precipitation 2 40.0%
Research 2 40.0%
Sea level rise 2 40.0%
Supplemental Nutrition Assistance Program 2 40.0%
United Nations Framework Convention on Climate Change 2 40.0%
United States farm bill 2 40.0%
WIC 2 40.0%
Afforestation 1 20.0%
Aid 1 20.0%
Antimicrobial resistance 1 20.0%
Atmosphere 1 20.0%
Atmosphere of Earth 1 20.0%
Atmospheric sciences 1 20.0%
Avian influenza 1 20.0%
Bee 1 20.0%
Biodiversity 1 20.0%
Biofuel 1 20.0%
Biomass 1 20.0%
Bioterrorism 1 20.0%
Capacity building 1 20.0%
Carbon cycle 1 20.0%
Carbon dioxide in Earth's atmosphere 1 20.0%
Carbon sequestration 1 20.0%
Cardiovascular disease 1 20.0%
Cattle 1 20.0%
Chronic condition 1 20.0%
Climate and weather statistics 1 20.0%
Climate change adaptation 1 20.0%
Climate change mitigation 1 20.0%
Climate change scenario 1 20.0%
Climate of India 1 20.0%
Climate variability and change 1 20.0%
Climatology 1 20.0%
Coal 1 20.0%
Coast 1 20.0%
Compressed natural gas 1 20.0%
Coral reef 1 20.0%
Dam 1 20.0%
Deforestation 1 20.0%
Denitrification 1 20.0%
Desert 1 20.0%
Developed country 1 20.0%
Developing country 1 20.0%
Diabetes 1 20.0%
Diesel fuel 1 20.0%
Diet (nutrition) 1 20.0%
Disease 1 20.0%
Earth sciences 1 20.0%
Ecology 1 20.0%
Economic development 1 20.0%
Economic growth 1 20.0%
Economy of India 1 20.0%
Ecosystem 1 20.0%
Effects of global warming 1 20.0%
Efficient energy use 1 20.0%
El Niño–Southern Oscillation 1 20.0%
Electricity generation 1 20.0%
Energy conservation 1 20.0%
Energy development 1 20.0%
Energy in India 1 20.0%
Energy industry 1 20.0%
Enteric fermentation 1 20.0%
Environmental degradation 1 20.0%
Exhaust gas 1 20.0%
Fat 1 20.0%
Fertilizer 1 20.0%
Five-Year Plans of India 1 20.0%
Flood 1 20.0%
Folate 1 20.0%
Food Quality Protection Act 1 20.0%
Food for Peace 1 20.0%
Foodborne illness 1 20.0%
Foreign animal disease 1 20.0%
Fuel 1 20.0%
Future problems 1 20.0%
General circulation model 1 20.0%
Global environmental issues 1 20.0%
Global warming 1 20.0%
Global warming potential 1 20.0%
Greenhouse effect 1 20.0%
Greenhouse gas emissions 1 20.0%
Greenhouse gas inventory 1 20.0%
Gross domestic product 1 20.0%
Groundwater 1 20.0%
Himalayas 1 20.0%
Honey 1 20.0%
Honey bee 1 20.0%
Human impact on the environment 1 20.0%
Human nutrition 1 20.0%
IPCC Third Assessment Report 1 20.0%
Infrastructure 1 20.0%
Land use, land-use change, and forestry 1 20.0%
Low-pressure area 1 20.0%
Mangrove 1 20.0%
Methane 1 20.0%
Mite 1 20.0%
Monsoon 1 20.0%
Monsoon of South Asia 1 20.0%
National School Lunch Act 1 20.0%
Natural gas 1 20.0%
Natural resources 1 20.0%
New Exploration Licensing Policy 1 20.0%
Nitrification 1 20.0%
Nitrous oxide 1 20.0%
Nuclear power 1 20.0%
Nutrient 1 20.0%
Nutrition 1 20.0%
Obesity 1 20.0%
Oil refinery 1 20.0%
Omega-3 fatty acid 1 20.0%
Organic matter 1 20.0%
Particulates 1 20.0%
Pesticide 1 20.0%
Petroleum 1 20.0%
Petroleum industry 1 20.0%
Photosynthesis 1 20.0%
Physical sciences 1 20.0%
Policy 1 20.0%
Pollination 1 20.0%
Pollution 1 20.0%
Poverty 1 20.0%
Poverty reduction 1 20.0%
Poverty threshold 1 20.0%
Preventive healthcare 1 20.0%
Primary energy 1 20.0%
Primary production 1 20.0%
Project Bioshield Act 1 20.0%
Radiative forcing 1 20.0%
Rain 1 20.0%
Reference Daily Intake 1 20.0%
Renewable energy 1 20.0%
Revenue 1 20.0%
Rice 1 20.0%
River 1 20.0%
Ruminant 1 20.0%
School meal programs in the United States 1 20.0%
Scrapie 1 20.0%
Season 1 20.0%
Sheep 1 20.0%
Societal collapse 1 20.0%
Soft drink 1 20.0%
Soil 1 20.0%
Special Report on Emissions Scenarios 1 20.0%
Storm 1 20.0%
Sustainability 1 20.0%
Tax 1 20.0%
Transmissible spongiform encephalopathy 1 20.0%
Transport 1 20.0%
Tribal colleges and universities 1 20.0%
Tropical cyclone 1 20.0%
Varroa destructor 1 20.0%
Veterinarian 1 20.0%
Veterinary medicine 1 20.0%
Vitamin E 1 20.0%
Waste 1 20.0%
Water 1 20.0%
Water scarcity 1 20.0%
Wind 1 20.0%
Wind power 1 20.0%
World energy consumption 1 20.0%

2005

abs rel
Human activities 2 66.7%
Air pollution 1 33.3%
Algal bloom 1 33.3%
Asset management 1 33.3%
Avoirdupois system 1 33.3%
Bank 1 33.3%
Best management practice for water pollution 1 33.3%
Best practice 1 33.3%
Bioretention 1 33.3%
Buffer strip 1 33.3%
Buffer zone 1 33.3%
Columbia Accident Investigation Board 1 33.3%
Combined sewer 1 33.3%
Constructed wetland 1 33.3%
Construction 1 33.3%
Copyright 1 33.3%
Cycling infrastructure 1 33.3%
Design 1 33.3%
Drainage 1 33.3%
Drinking water 1 33.3%
Earth sciences 1 33.3%
Ecology 1 33.3%
Economic development 1 33.3%
Economic sectors 1 33.3%
Economics 1 33.3%
Economy 1 33.3%
Environment 1 33.3%
Environmental design 1 33.3%
Environmental impact assessment 1 33.3%
Environmental science 1 33.3%
Environmental social science 1 33.3%
Environmental technology 1 33.3%
Environmentalism 1 33.3%
Erosion 1 33.3%
Exhaust gas 1 33.3%
Flood 1 33.3%
Foot (unit) 1 33.3%
Gallon 1 33.3%
Geographic information system 1 33.3%
Green building 1 33.3%
Green infrastructure 1 33.3%
Green roof 1 33.3%
Greenhouse gas 1 33.3%
Groundwater 1 33.3%
Harmful algal bloom 1 33.3%
Highway 1 33.3%
Hydrology 1 33.3%
Imperial units 1 33.3%
Infiltration (hydrology) 1 33.3%
Infrastructure 1 33.3%
Innovation 1 33.3%
Investment 1 33.3%
Investor 1 33.3%
Joint venture 1 33.3%
Land management 1 33.3%
Lawn 1 33.3%
Life-cycle assessment 1 33.3%
Mean 1 33.3%
Mining 1 33.3%
Mining engineering 1 33.3%
NOx 1 33.3%
Nanotechnology 1 33.3%
Natural environment 1 33.3%
Natural resource management 1 33.3%
Nature 1 33.3%
Noise pollution 1 33.3%
Park 1 33.3%
Particulates 1 33.3%
Pint 1 33.3%
Pollution 1 33.3%
Present value 1 33.3%
Probability distribution 1 33.3%
Public health 1 33.3%
Rate of return 1 33.3%
Recycling 1 33.3%
Risk 1 33.3%
Road surface 1 33.3%
Sanitary sewer overflow 1 33.3%
Sewage 1 33.3%
Sidewalk 1 33.3%
Soil 1 33.3%
Staten Island Bluebelt 1 33.3%
Storm drain 1 33.3%
Stormwater 1 33.3%
Street 1 33.3%
Surface runoff 1 33.3%
Sustainability 1 33.3%
Sustainable design 1 33.3%
Sustainable development 1 33.3%
Tax 1 33.3%
Technology 1 33.3%
Ton 1 33.3%
Traffic 1 33.3%
Transport 1 33.3%
Troy weight 1 33.3%
Urban forestry 1 33.3%
Urban heat island 1 33.3%
Urban planning 1 33.3%
Urban runoff 1 33.3%
Waste 1 33.3%
Waste management 1 33.3%
Water conservation 1 33.3%
Water pollution 1 33.3%
Water supply network 1 33.3%
Wetland 1 33.3%
World Wide Web 1 33.3%

2006

abs rel
Bark (botany) 1 50.0%
Bark beetle 1 50.0%
Beetle 1 50.0%
Biology 1 50.0%
Cleridae 1 50.0%
Combustibility and flammability 1 50.0%
Crane (machine) 1 50.0%
Decibel 1 50.0%
Dendroctonus valens 1 50.0%
Disturbance (ecology) 1 50.0%
Employment 1 50.0%
First aid 1 50.0%
Fungus 1 50.0%
Human activities 1 50.0%
Mountain pine beetle 1 50.0%
Mycangium 1 50.0%
Noise 1 50.0%
Occupational safety and health 1 50.0%
Organisms 1 50.0%
Parasitism 1 50.0%
Pine 1 50.0%
Pinus contorta 1 50.0%
Pinus jeffreyi 1 50.0%
Predation 1 50.0%
Pupa 1 50.0%
Safety data sheet 1 50.0%
Scaffolding 1 50.0%
Sound level meter 1 50.0%
Threshold limit value 1 50.0%
Tree 1 50.0%
Ventilation (architecture) 1 50.0%
Wood 1 50.0%

2007

abs rel
2004 enlargement of the European Union 1 50.0%
Anthropometry 1 50.0%
Clean Development Mechanism 1 50.0%
Climate change 1 50.0%
Climate change mitigation 1 50.0%
Coal 1 50.0%
Cognitive science 1 50.0%
Computer 1 50.0%
Computer simulation 1 50.0%
Data 1 50.0%
Database 1 50.0%
Drill 1 50.0%
Economics of climate change mitigation 1 50.0%
Economy 1 50.0%
Efficient energy use 1 50.0%
Emission intensity 1 50.0%
Emissions trading 1 50.0%
European Union Emission Trading Scheme 1 50.0%
Experiment 1 50.0%
Flexible Mechanisms 1 50.0%
Global warming 1 50.0%
Greenhouse gas 1 50.0%
Hazard 1 50.0%
Health 1 50.0%
Human factors and ergonomics 1 50.0%
Human subject research 1 50.0%
Kyoto Protocol 1 50.0%
Low-carbon economy 1 50.0%
Machine 1 50.0%
Mining 1 50.0%
Motion capture 1 50.0%
Occupational safety and health 1 50.0%
Politics of global warming 1 50.0%
Randomness 1 50.0%
Risk 1 50.0%
Robot 1 50.0%
Simulation 1 50.0%
Special Report on Emissions Scenarios 1 50.0%
Survival analysis 1 50.0%
Technology 1 50.0%
United Nations Framework Convention on Climate Change 1 50.0%
Validity (statistics) 1 50.0%
World energy consumption 1 50.0%

2008

abs rel
Human activities 3 75.0%
Clean Water Act 2 50.0%
Natural environment 2 50.0%
Pollution 2 50.0%
Risk 2 50.0%
Water 2 50.0%
Agriculture 1 25.0%
Analytical chemistry 1 25.0%
Arctic 1 25.0%
Audit 1 25.0%
Bank 1 25.0%
Bill (law) 1 25.0%
Bioswale 1 25.0%
Black carbon 1 25.0%
CE marking 1 25.0%
Cargo 1 25.0%
Chemistry 1 25.0%
Committee 1 25.0%
Conservation biology 1 25.0%
Construction 1 25.0%
Crop insurance 1 25.0%
Dog fighting in the United States 1 25.0%
Economy 1 25.0%
Ecosystem-based management 1 25.0%
Efficient energy use 1 25.0%
Employment 1 25.0%
Endangered Species Act of 1973 1 25.0%
Environment 1 25.0%
Environmental impact assessment 1 25.0%
Environmental policy 1 25.0%
Farm Credit System 1 25.0%
Flood 1 25.0%
Food 1 25.0%
Food safety 1 25.0%
Food security 1 25.0%
Freedom of Information Act (United States) 1 25.0%
Gas chromatography 1 25.0%
Gas chromatography–mass spectrometry 1 25.0%
Global warming 1 25.0%
Government 1 25.0%
Green infrastructure 1 25.0%
Inspection 1 25.0%
Insurance 1 25.0%
Laboratory 1 25.0%
Life-cycle assessment 1 25.0%
Loan 1 25.0%
Marine Mammal Protection Act 1 25.0%
Medicaid 1 25.0%
Mortgage loan 1 25.0%
National Environmental Policy Act 1 25.0%
National Petroleum Reserve–Alaska 1 25.0%
Natural resource 1 25.0%
Nature 1 25.0%
Nonpoint source pollution 1 25.0%
Office of Inspector General (United States) 1 25.0%
Oil spill 1 25.0%
Physical sciences 1 25.0%
Policy 1 25.0%
Politics 1 25.0%
Poverty 1 25.0%
President of the United States 1 25.0%
Public policy 1 25.0%
Public sphere 1 25.0%
Renewable energy 1 25.0%
Risk assessment 1 25.0%
Rulemaking 1 25.0%
Science 1 25.0%
Sea 1 25.0%
Social responsibility 1 25.0%
Stormwater 1 25.0%
Supplemental Nutrition Assistance Program 1 25.0%
Surface runoff 1 25.0%
Sustainability 1 25.0%
Technology 1 25.0%
Transport 1 25.0%
United States farm bill 1 25.0%
WIC 1 25.0%
Wetland 1 25.0%
Whistleblower 1 25.0%
Whistleblower protection in the United States 1 25.0%
Wildfire suppression 1 25.0%

2009

abs rel
Human activities 5 83.3%
Natural environment 5 83.3%
Earth sciences 3 50.0%
Economic development 3 50.0%
Ecosystem 3 50.0%
Environmental science 3 50.0%
Greenhouse gas 3 50.0%
Renewable energy 3 50.0%
Water 3 50.0%
Agriculture 2 33.3%
Carbon dioxide 2 33.3%
Climate Change Science Program 2 33.3%
Climate change 2 33.3%
Climate change adaptation 2 33.3%
Climate resilience 2 33.3%
Deforestation 2 33.3%
Effects of global warming 2 33.3%
Emergency management 2 33.3%
Flood 2 33.3%
Food 2 33.3%
Forest 2 33.3%
Global warming 2 33.3%
Natural resource 2 33.3%
Natural resources 2 33.3%
Nature 2 33.3%
Physical geography 2 33.3%
Policy 2 33.3%
Precipitation 2 33.3%
Research 2 33.3%
Risk 2 33.3%
Risk assessment 2 33.3%
Risk management 2 33.3%
Sea level rise 2 33.3%
Soil 2 33.3%
Tropical cyclone 2 33.3%
Air pollution 1 16.7%
Alternative energy 1 16.7%
Amazon rainforest 1 16.7%
Aquaculture 1 16.7%
Arctic 1 16.7%
Biofuel 1 16.7%
Biotic Ligand Model 1 16.7%
Bottled water 1 16.7%
Cadmium 1 16.7%
Chemistry 1 16.7%
Clean Development Mechanism 1 16.7%
Climate 1 16.7%
Climate change and agriculture 1 16.7%
Climate change mitigation 1 16.7%
Climate change policy of the United States 1 16.7%
Clinical medicine 1 16.7%
Community 1 16.7%
Dam 1 16.7%
Data 1 16.7%
Data analysis 1 16.7%
Dental fluorosis 1 16.7%
Disease 1 16.7%
Drainage basin 1 16.7%
Drinking water 1 16.7%
Drought 1 16.7%
Ecology 1 16.7%
Ecosystem services 1 16.7%
Efficient energy use 1 16.7%
Electricity generation 1 16.7%
Emissions trading 1 16.7%
Energy conservation 1 16.7%
Energy policy 1 16.7%
Environment 1 16.7%
Environmental degradation 1 16.7%
Environmental policy 1 16.7%
Epidemiology 1 16.7%
Erosion 1 16.7%
Eutrophication 1 16.7%
Fluoride 1 16.7%
Food security 1 16.7%
General circulation model 1 16.7%
Geographic information system 1 16.7%
Geography 1 16.7%
Health 1 16.7%
Health care 1 16.7%
Health sciences 1 16.7%
Hydrology 1 16.7%
IPCC Fourth Assessment Report 1 16.7%
Indirect land use change impacts of biofuels 1 16.7%
Infrastructure 1 16.7%
Innovation 1 16.7%
International development 1 16.7%
Irrigation 1 16.7%
Kyoto Protocol 1 16.7%
Land use 1 16.7%
Landsat program 1 16.7%
Lead 1 16.7%
Life-cycle assessment 1 16.7%
Liquid dielectrics 1 16.7%
Low-carbon fuel standard 1 16.7%
Management 1 16.7%
Medical specialties 1 16.7%
Mekong 1 16.7%
Mekong Delta 1 16.7%
Mercury (element) 1 16.7%
Multispectral image 1 16.7%
Nam Ngum Dam 1 16.7%
National Environmental Policy Act 1 16.7%
Organic matter 1 16.7%
PH 1 16.7%
Permafrost 1 16.7%
Physical sciences 1 16.7%
Poverty reduction 1 16.7%
Public health 1 16.7%
Rain 1 16.7%
Reducing emissions from deforestation and forest degradation 1 16.7%
Remote sensing 1 16.7%
Renewable Fuel Standard (United States) 1 16.7%
Renewable fuels 1 16.7%
Reservoir 1 16.7%
Rice 1 16.7%
Science 1 16.7%
Scientific method 1 16.7%
Sea 1 16.7%
Social science 1 16.7%
Software 1 16.7%
Soil erosion 1 16.7%
Strategic planning 1 16.7%
Surface runoff 1 16.7%
Sustainability 1 16.7%
Sustainable development 1 16.7%
Technology 1 16.7%
Tonlé Sap 1 16.7%
Toxicity 1 16.7%
Transport 1 16.7%
Transportation planning 1 16.7%
United Nations Framework Convention on Climate Change 1 16.7%
Water fluoridation 1 16.7%
Water pollution 1 16.7%
Water purification 1 16.7%
Water quality 1 16.7%
Water resources 1 16.7%
Water scarcity 1 16.7%
Waterborne diseases 1 16.7%
Wet season 1 16.7%
Wetland 1 16.7%
Wildfire 1 16.7%

2010

abs rel
Agriculture 4 44.4%
Human activities 4 44.4%
Chemistry 3 33.3%
Environmental impact assessment 3 33.3%
Food 3 33.3%
Prediction 3 33.3%
Software 3 33.3%
Soil 3 33.3%
Toxicity 3 33.3%
Water 3 33.3%
Climate change mitigation 2 22.2%
Construction 2 22.2%
Ecology 2 22.2%
Employment 2 22.2%
Farm 2 22.2%
Farmer 2 22.2%
Insurance 2 22.2%
Mauna Kea 2 22.2%
Natural environment 2 22.2%
Observatory 2 22.2%
Physical sciences 2 22.2%
Policy 2 22.2%
Quantitative structure–activity relationship 2 22.2%
Research 2 22.2%
Risk 2 22.2%
Surface runoff 2 22.2%
Thirty Meter Telescope 2 22.2%
Toxicology 2 22.2%
2,4-Dichlorophenoxyacetic acid 1 11.1%
Acetic acid 1 11.1%
Adaptive optics 1 11.1%
Advertising 1 11.1%
Advertising management 1 11.1%
Agricultural machinery 1 11.1%
Aircraft pilot 1 11.1%
Andes 1 11.1%
Application software 1 11.1%
Aquaculture 1 11.1%
Arbitration 1 11.1%
Aromatic amino acid 1 11.1%
Astronomy 1 11.1%
Atmosphere of Earth 1 11.1%
Biodiversity 1 11.1%
Biophysical environment 1 11.1%
Biosynthesis 1 11.1%
Bookkeeping 1 11.1%
Browse LNG 1 11.1%
Business 1 11.1%
Call centre 1 11.1%
Carbon footprint 1 11.1%
Cattle 1 11.1%
Census 1 11.1%
Chief executive officer 1 11.1%
Child care 1 11.1%
Clearcutting 1 11.1%
Climate 1 11.1%
Climate change 1 11.1%
Coal 1 11.1%
Coca 1 11.1%
Coca eradication 1 11.1%
Cocaine 1 11.1%
Computer simulation 1 11.1%
Confectionery 1 11.1%
Cooperative 1 11.1%
Crop insurance 1 11.1%
Crop rotation 1 11.1%
Dairy 1 11.1%
Dairy cattle 1 11.1%
Dairy farming 1 11.1%
Dangerous goods 1 11.1%
Demand 1 11.1%
Deposition (geology) 1 11.1%
Development aid 1 11.1%
Distribution (marketing) 1 11.1%
Drafter 1 11.1%
Earth sciences 1 11.1%
Economy 1 11.1%
Education 1 11.1%
Electrical engineering 1 11.1%
Emergency management 1 11.1%
Energy development 1 11.1%
Engineer 1 11.1%
Engineering 1 11.1%
Engineering technician 1 11.1%
Environment Protection and Biodiversity Conservation Act 1999 1 11.1%
Environmental impact statement 1 11.1%
Environmental protection 1 11.1%
Environmental science 1 11.1%
Enzyme inhibitor 1 11.1%
Epidemiology 1 11.1%
Farmworker 1 11.1%
Floating liquefied natural gas 1 11.1%
Food security 1 11.1%
Fossil fuel 1 11.1%
Fuel 1 11.1%
Futures contract 1 11.1%
Global Positioning System 1 11.1%
Globalization 1 11.1%
Glyphosate 1 11.1%
Glyphosate-based herbicides 1 11.1%
Greenhouse gas 1 11.1%
Hawaii Route 200 1 11.1%
Hazardous waste 1 11.1%
Health 1 11.1%
Health care 1 11.1%
Health professional 1 11.1%
Heating, ventilation, and air conditioning 1 11.1%
Herbicide 1 11.1%
Heroin 1 11.1%
Human impact on the environment 1 11.1%
Human resource management 1 11.1%
Humidity 1 11.1%
Hypothesis 1 11.1%
Illegal drug trade 1 11.1%
Implementation 1 11.1%
Indigenous Australians 1 11.1%
Industrial relations 1 11.1%
Information and communications technology 1 11.1%
Information technology 1 11.1%
Infrared astronomy 1 11.1%
Infrastructure 1 11.1%
Insecticide 1 11.1%
Intensive farming 1 11.1%
James Clerk Maxwell Telescope 1 11.1%
Karratha, Western Australia 1 11.1%
Kimberley (Western Australia) 1 11.1%
Landlord 1 11.1%
Lawyer 1 11.1%
Lease 1 11.1%
Liquefied natural gas 1 11.1%
Loan 1 11.1%
Logistics 1 11.1%
Machinist 1 11.1%
Maintenance (technical) 1 11.1%
Maize 1 11.1%
Malt 1 11.1%
Management 1 11.1%
Manufacturing 1 11.1%
Manufacturing engineering 1 11.1%
Market (economics) 1 11.1%
Marketing 1 11.1%
Medical specialty 1 11.1%
Medicine 1 11.1%
Metal 1 11.1%
Metalworking 1 11.1%
Meteorology 1 11.1%
Milk 1 11.1%
Mirror 1 11.1%
Mobile phone 1 11.1%
Morphine 1 11.1%
Murujuga 1 11.1%
Natural gas 1 11.1%
Nature 1 11.1%
Nature conservation 1 11.1%
Net neutrality 1 11.1%
Noise 1 11.1%
Numerical weather prediction 1 11.1%
Occupational safety and health 1 11.1%
Opium 1 11.1%
Option (finance) 1 11.1%
Organization 1 11.1%
Papaver somniferum 1 11.1%
Paper 1 11.1%
Pesticide 1 11.1%
Pesticide drift 1 11.1%
Physical geography 1 11.1%
Physician 1 11.1%
Pipeline transport 1 11.1%
Plant cuticle 1 11.1%
Precipitation 1 11.1%
Price 1 11.1%
Procurement 1 11.1%
Profit (economics) 1 11.1%
Programmer 1 11.1%
Public consultation 1 11.1%
Public relations 1 11.1%
Purchasing 1 11.1%
Radiographer 1 11.1%
Rain 1 11.1%
Real estate appraisal 1 11.1%
Regression analysis 1 11.1%
Regulatory compliance 1 11.1%
Resource Conservation and Recovery Act 1 11.1%
Risk assessment 1 11.1%
Sales 1 11.1%
Sanitation 1 11.1%
School 1 11.1%
Science 1 11.1%
Shikimic acid 1 11.1%
Site selection 1 11.1%
Social work 1 11.1%
Soybean 1 11.1%
Spinning (textiles) 1 11.1%
Spray (liquid drop) 1 11.1%
Statistics 1 11.1%
Strategic planning 1 11.1%
Submillimetre astronomy 1 11.1%
Subsidy 1 11.1%
Surfactant 1 11.1%
Sustainability 1 11.1%
Sustainable energy 1 11.1%
Tax 1 11.1%
Taxonomy (biology) 1 11.1%
Teacher 1 11.1%
Technology 1 11.1%
Telecommunication 1 11.1%
Telescope 1 11.1%
Textile 1 11.1%
Theory 1 11.1%
Tool and die maker 1 11.1%
Transport 1 11.1%
United Kingdom Infrared Telescope 1 11.1%
United States farm bill 1 11.1%
Vertical integration 1 11.1%
Waste 1 11.1%
Waste management 1 11.1%
Wastewater 1 11.1%
Water pollution 1 11.1%
Weather 1 11.1%
Weather forecasting 1 11.1%
Weed 1 11.1%
Wetland 1 11.1%
Wildfire 1 11.1%
Yarn 1 11.1%
Zoning 1 11.1%

2011

abs rel
Air pollution 4 66.7%
Human activities 4 66.7%
Hazard 3 50.0%
Health 3 50.0%
Natural environment 3 50.0%
Nature 3 50.0%
Biodiversity 2 33.3%
Chemical substances 2 33.3%
Chemistry 2 33.3%
Chromium 2 33.3%
Conservation biology 2 33.3%
Data analysis 2 33.3%
Formaldehyde 2 33.3%
Physical sciences 2 33.3%
Pollution 2 33.3%
Risk assessment 2 33.3%
River Rouge (Michigan) 2 33.3%
Sustainability 2 33.3%
Toxicity 2 33.3%
Uncertainty 2 33.3%
Volatile organic compound 2 33.3%
Academic degree 1 16.7%
Acetaldehyde 1 16.7%
Aerosol 1 16.7%
Air pollution in Turkey 1 16.7%
Arsenic 1 16.7%
Austerity 1 16.7%
Benzene 1 16.7%
Birth defect 1 16.7%
Breathing 1 16.7%
Cadmium 1 16.7%
Cancer 1 16.7%
Carcinogen 1 16.7%
Clean Air Act of 1963 1 16.7%
Clean technology 1 16.7%
Climate change 1 16.7%
Climate change mitigation 1 16.7%
Climate resilience 1 16.7%
College 1 16.7%
Construction 1 16.7%
Deepwater Horizon oil spill 1 16.7%
Deforestation 1 16.7%
Dentistry 1 16.7%
Detection limit 1 16.7%
Dichloromethane 1 16.7%
Distributed generation 1 16.7%
Earthquake 1 16.7%
Earthscope 1 16.7%
Ecology 1 16.7%
Education 1 16.7%
Efficient energy use 1 16.7%
Electrical grid 1 16.7%
Emerald ash borer 1 16.7%
Energy conservation 1 16.7%
Energy development 1 16.7%
Energy management 1 16.7%
Energy security 1 16.7%
Environmental science 1 16.7%
Exhaust gas 1 16.7%
Forest 1 16.7%
Forestry 1 16.7%
Geology 1 16.7%
Government budget balance 1 16.7%
Graduate school 1 16.7%
Green building 1 16.7%
Greenhouse gas 1 16.7%
Gross domestic product 1 16.7%
Habitat 1 16.7%
Habitat destruction 1 16.7%
Hazardous waste 1 16.7%
Heating, ventilation, and air conditioning 1 16.7%
Hexavalent chromium 1 16.7%
Humanities 1 16.7%
Hydrology 1 16.7%
Hypothermia 1 16.7%
Illegal logging 1 16.7%
Indian reservation 1 16.7%
Indoor air quality 1 16.7%
Introduced species 1 16.7%
Invasive species 1 16.7%
Javan mongoose 1 16.7%
Landsat program 1 16.7%
Life-cycle assessment 1 16.7%
Manganism 1 16.7%
Marine Corps Air Ground Combat Center Twentynine Palms 1 16.7%
National Wildlife Refuge 1 16.7%
Native Americans in the United States 1 16.7%
Natural hazard 1 16.7%
Natural resource 1 16.7%
Natural resources 1 16.7%
Nickel 1 16.7%
Non-governmental organization 1 16.7%
Occupational safety and health 1 16.7%
Oral hygiene 1 16.7%
Organisms 1 16.7%
Ozone 1 16.7%
Particulates 1 16.7%
Photovoltaics 1 16.7%
Pollution prevention 1 16.7%
Renewable energy 1 16.7%
Reorganization plan of United States Army 1 16.7%
Research 1 16.7%
Resource 1 16.7%
Risk 1 16.7%
Science 1 16.7%
Smoke 1 16.7%
Solar panel 1 16.7%
Solar power 1 16.7%
Sustainable energy 1 16.7%
Tax 1 16.7%
Technology 1 16.7%
Thousand cankers disease 1 16.7%
Tooth decay 1 16.7%
Toxicology 1 16.7%
Tribal colleges and universities 1 16.7%
Tsunami 1 16.7%
Unexploded ordnance 1 16.7%
Waste 1 16.7%
Waste management 1 16.7%
Water 1 16.7%
Water resources 1 16.7%

2012

abs rel
Human activities 10 83.3%
Natural environment 7 58.3%
Sustainability 6 50.0%
Agriculture 5 41.7%
Health 5 41.7%
Risk 5 41.7%
Climate change mitigation 4 33.3%
Emergency management 4 33.3%
Nature 4 33.3%
Pollution 4 33.3%
Soil 4 33.3%
Water 4 33.3%
Air pollution 3 25.0%
Carbon dioxide 3 25.0%
Earth sciences 3 25.0%
Ecology 3 25.0%
Economic development 3 25.0%
Economic growth 3 25.0%
Economics 3 25.0%
Environmental degradation 3 25.0%
Evaluation 3 25.0%
Greenhouse gas 3 25.0%
Management 3 25.0%
Natural resources 3 25.0%
Regulatory compliance 3 25.0%
Research 3 25.0%
Risk management 3 25.0%
Sustainable development 3 25.0%
Wetland 3 25.0%
Administration of federal assistance in the United States 2 16.7%
Air conditioning 2 16.7%
Audit 2 16.7%
Biodiversity 2 16.7%
Carbon sequestration 2 16.7%
Coal 2 16.7%
Computer security 2 16.7%
Construction 2 16.7%
Deforestation 2 16.7%
Developing country 2 16.7%
Economy 2 16.7%
Ecosystem 2 16.7%
Ecosystem services 2 16.7%
Emissions trading 2 16.7%
Environmental impact assessment 2 16.7%
Extinction 2 16.7%
Fertilizer 2 16.7%
Food 2 16.7%
Forest 2 16.7%
Geographic information system 2 16.7%
Global warming 2 16.7%
Government 2 16.7%
HVAC 2 16.7%
Hazard 2 16.7%
Hydrology 2 16.7%
Hypothermia 2 16.7%
Indoor air quality 2 16.7%
Information 2 16.7%
Innovation 2 16.7%
Intensive farming 2 16.7%
Labour economics 2 16.7%
Leaching (agriculture) 2 16.7%
Life-cycle assessment 2 16.7%
Livestock 2 16.7%
Market (economics) 2 16.7%
Natural gas 2 16.7%
Particulates 2 16.7%
Pesticide 2 16.7%
Public sphere 2 16.7%
Resource 2 16.7%
Safety 2 16.7%
Simulation 2 16.7%
Waste 2 16.7%
Water pollution 2 16.7%
ASHRAE 90.1 1 8.3%
Absorbed dose 1 8.3%
Absorption (skin) 1 8.3%
Access control 1 8.3%
Africa 1 8.3%
Agenda 21 1 8.3%
Agroforestry 1 8.3%
Aldrin 1 8.3%
Amazon rainforest 1 8.3%
American Recovery and Reinvestment Act of 2009 1 8.3%
Antibiotic 1 8.3%
Antimicrobial resistance 1 8.3%
Aquifer 1 8.3%
Arbovirus 1 8.3%
Artificial objects 1 8.3%
Asthma 1 8.3%
Atmosphere of Earth 1 8.3%
Avian influenza 1 8.3%
BCG vaccine 1 8.3%
Bias 1 8.3%
Biofuel 1 8.3%
Biomarker 1 8.3%
Biomass 1 8.3%
Biomonitoring 1 8.3%
Brownfield land 1 8.3%
Building 1 8.3%
Cadmium 1 8.3%
Calibration 1 8.3%
California Environmental Quality Act 1 8.3%
Cancer 1 8.3%
Capacity building 1 8.3%
Carbon accounting 1 8.3%
Carbon dioxide in Earth's atmosphere 1 8.3%
Carbon emission trading 1 8.3%
Carbon offset 1 8.3%
Carbon sink 1 8.3%
Celsius 1 8.3%
Cerrado 1 8.3%
Chlordane 1 8.3%
Chronic obstructive pulmonary disease 1 8.3%
Clean Air Act of 1963 1 8.3%
Clean Development Mechanism 1 8.3%
Climate 1 8.3%
Climate change 1 8.3%
Climate change adaptation 1 8.3%
Climate resilience 1 8.3%
Clothing 1 8.3%
Coal-fired power station 1 8.3%
Cold chain 1 8.3%
Combustion 1 8.3%
Committed dose 1 8.3%
Communication protocol 1 8.3%
Community forestry 1 8.3%
Compliance requirements 1 8.3%
Computer 1 8.3%
Computer data storage 1 8.3%
Confounding 1 8.3%
Conservation (ethic) 1 8.3%
Conservation biology 1 8.3%
Contract 1 8.3%
Cost 1 8.3%
Crop rotation 1 8.3%
Customs 1 8.3%
DDT 1 8.3%
DPT vaccine 1 8.3%
Data 1 8.3%
Data quality 1 8.3%
Davis–Bacon Act of 1931 1 8.3%
Decision-making 1 8.3%
Dieldrin 1 8.3%
Disability 1 8.3%
Disaster risk reduction 1 8.3%
Disease 1 8.3%
Disease burden 1 8.3%
Dose (biochemistry) 1 8.3%
Drinking water 1 8.3%
Ecological footprint 1 8.3%
Ecological resilience 1 8.3%
Economic rent 1 8.3%
Economics of climate change mitigation 1 8.3%
Eddy covariance 1 8.3%
Effects of global warming 1 8.3%
Efficient energy use 1 8.3%
Electric power transmission 1 8.3%
Electrical grid 1 8.3%
Electronic Product Environmental Assessment Tool 1 8.3%
Emergency 1 8.3%
Emergency Management Institute 1 8.3%
Emission intensity 1 8.3%
Employment 1 8.3%
Energy Star 1 8.3%
Energy development 1 8.3%
Environmental conservation 1 8.3%
Environmental epidemiology 1 8.3%
Environmental health 1 8.3%
Environmental issues 1 8.3%
Environmental monitoring 1 8.3%
Environmental policy 1 8.3%
Environmental protection 1 8.3%
Environmental science 1 8.3%
Environmental social science 1 8.3%
Epidemic 1 8.3%
Epidemiology 1 8.3%
Erosion 1 8.3%
European Union Emission Trading Scheme 1 8.3%
Eutrophication 1 8.3%
Expanded Program on Immunization 1 8.3%
Expense 1 8.3%
Expiration date 1 8.3%
Exposure (photography) 1 8.3%
Exposure assessment 1 8.3%
FLUXNET 1 8.3%
Famine 1 8.3%
Farm 1 8.3%
Fax 1 8.3%
Feasibility study 1 8.3%
Federal Acquisition Regulation 1 8.3%
Fire prevention 1 8.3%
Fire sprinkler system 1 8.3%
Firefighter 1 8.3%
Flash flood guidance system 1 8.3%
Flood 1 8.3%
Floodplain 1 8.3%
Food prices 1 8.3%
Food security 1 8.3%
Food system 1 8.3%
Forecasting 1 8.3%
Forestry 1 8.3%
Fossil fuel 1 8.3%
Freeze-drying 1 8.3%
Freezing 1 8.3%
Fuel 1 8.3%
Genetically modified crops 1 8.3%
Goal 1 8.3%
Governance 1 8.3%
Green building 1 8.3%
Groundwater 1 8.3%
Habitat destruction 1 8.3%
Herbicide 1 8.3%
Human impact on the environment 1 8.3%
Hygiene 1 8.3%
Ice 1 8.3%
Ice pack 1 8.3%
Immunization 1 8.3%
Incidence (epidemiology) 1 8.3%
Incident Command System 1 8.3%
Indirect land use change impacts of biofuels 1 8.3%
Influenza 1 8.3%
Inspection 1 8.3%
Institutional review board 1 8.3%
Intellectual property 1 8.3%
Inventory 1 8.3%
Ionizing radiation 1 8.3%
Keystone Pipeline 1 8.3%
Lake 1 8.3%
Land use 1 8.3%
Land use, land-use change, and forestry 1 8.3%
Landfill 1 8.3%
Landscape 1 8.3%
Law 1 8.3%
Leachate 1 8.3%
Lead 1 8.3%
Lead poisoning 1 8.3%
Leadership in Energy and Environmental Design 1 8.3%
Legume 1 8.3%
Level of service (transportation) 1 8.3%
Lidar 1 8.3%
Lubricant 1 8.3%
MMR vaccine 1 8.3%
MSRAM 1 8.3%
Mains electricity 1 8.3%
Maritime Transportation Security Act of 2002 1 8.3%
Mekong 1 8.3%
Mercury (element) 1 8.3%
Mercury regulation in the United States 1 8.3%
Meteorology 1 8.3%
Mining 1 8.3%
NOx 1 8.3%
National Priorities List 1 8.3%
Natural reservoir 1 8.3%
Natural resource 1 8.3%
Natural resource management 1 8.3%
Nitrate 1 8.3%
Non-governmental organization 1 8.3%
Occupational hygiene 1 8.3%
Occupational safety and health 1 8.3%
Office of Inspector General (United States) 1 8.3%
Old-growth forest 1 8.3%
Organic farming 1 8.3%
Packaging and labeling 1 8.3%
Parasitism 1 8.3%
Pesticide residue 1 8.3%
Pesticide resistance 1 8.3%
Petroleum 1 8.3%
Phosphate 1 8.3%
Phosphorite 1 8.3%
Physical geography 1 8.3%
Planned unit development 1 8.3%
Plantation 1 8.3%
Population 1 8.3%
Port security 1 8.3%
Poverty 1 8.3%
Poverty reduction 1 8.3%
Power station 1 8.3%
Power supply 1 8.3%
Prevalence 1 8.3%
Protected area 1 8.3%
Public good (economics) 1 8.3%
Records management 1 8.3%
Recycling 1 8.3%
Reducing emissions from deforestation and forest degradation 1 8.3%
Reference dose 1 8.3%
Reforestation 1 8.3%
Refrigeration 1 8.3%
Refrigerator 1 8.3%
Regional transmission organization (North America) 1 8.3%
Rehabilitation Act of 1973 1 8.3%
Reliability engineering 1 8.3%
Remote sensing 1 8.3%
Requirement 1 8.3%
Resource Conservation and Recovery Act 1 8.3%
Resource depletion 1 8.3%
Rice 1 8.3%
Risk assessment 1 8.3%
River 1 8.3%
Safety stock 1 8.3%
Sampling (statistics) 1 8.3%
Sanitation 1 8.3%
Savanna 1 8.3%
Science 1 8.3%
Section 504 of the Rehabilitation Act 1 8.3%
Shifting cultivation 1 8.3%
Soil carbon 1 8.3%
Soil contamination 1 8.3%
Sonar 1 8.3%
Soybean 1 8.3%
Spatial analysis 1 8.3%
Special education 1 8.3%
Spreadsheet 1 8.3%
Statistics 1 8.3%
Subsistence agriculture 1 8.3%
Superfund 1 8.3%
Supply chain 1 8.3%
Sustainable forest management 1 8.3%
Technology 1 8.3%
Temperature 1 8.3%
Thermometer 1 8.3%
Threshold limit value 1 8.3%
Tillage 1 8.3%
Time 1 8.3%
Tonlé Sap 1 8.3%
Toxicity 1 8.3%
Transport 1 8.3%
Transportation Worker Identification Credential 1 8.3%
Tree allometry 1 8.3%
Tropics 1 8.3%
Typhoon Ketsana 1 8.3%
Uncertainty 1 8.3%
United Nations Framework Convention on Climate Change 1 8.3%
Usability 1 8.3%
Vaccine 1 8.3%
Vector (epidemiology) 1 8.3%
Vehicle 1 8.3%
Ventilation (architecture) 1 8.3%
Volatile organic compound 1 8.3%
Vulnerability (computing) 1 8.3%
Warehouse 1 8.3%
Waste management 1 8.3%
Water heating 1 8.3%
Water resources 1 8.3%
Weather forecasting 1 8.3%
Wheat 1 8.3%
Wireless ad hoc network 1 8.3%
Wood fuel 1 8.3%
World energy consumption 1 8.3%
Zoonosis 1 8.3%

2013

abs rel
Human activities 7 50.0%
Risk 7 50.0%
Evaluation 5 35.7%
Natural environment 5 35.7%
Nature 5 35.7%
Research 5 35.7%
Sustainability 5 35.7%
Agriculture 4 28.6%
Economy 4 28.6%
Greenhouse gas 4 28.6%
Safety 4 28.6%
Technology 4 28.6%
Water 4 28.6%
Air pollution 3 21.4%
Climate change 3 21.4%
Ecology 3 21.4%
Efficient energy use 3 21.4%
Environmental science 3 21.4%
Machine 3 21.4%
Maintenance (technical) 3 21.4%
Manufacturing 3 21.4%
Municipal solid waste 3 21.4%
Occupational safety and health 3 21.4%
Regulatory compliance 3 21.4%
Transport 3 21.4%
Valve 3 21.4%
Waste 3 21.4%
Actuator 2 14.3%
Analytical chemistry 2 14.3%
Audit 2 14.3%
Bandsaw 2 14.3%
Belt (mechanical) 2 14.3%
Biomass 2 14.3%
Business 2 14.3%
Chemistry 2 14.3%
Circular saw 2 14.3%
Climate 2 14.3%
Compressed-air energy storage 2 14.3%
Conservation biology 2 14.3%
Cost–benefit analysis 2 14.3%
Coupling 2 14.3%
Drinking water 2 14.3%
Earth sciences 2 14.3%
Economic growth 2 14.3%
Ecosystem 2 14.3%
Education 2 14.3%
Employment 2 14.3%
Energy 2 14.3%
Energy conservation 2 14.3%
Engineering 2 14.3%
Engineering controls 2 14.3%
Environmental technology 2 14.3%
Fertilizer 2 14.3%
Flood 2 14.3%
Food 2 14.3%
Food and drink 2 14.3%
Foundry 2 14.3%
Grinding (abrasive cutting) 2 14.3%
Habitat 2 14.3%
Hazard 2 14.3%
Health 2 14.3%
Human impact on the environment 2 14.3%
Industrial robot 2 14.3%
Infrastructure 2 14.3%
Life-cycle assessment 2 14.3%
Machines 2 14.3%
Management 2 14.3%
Manufactured goods 2 14.3%
Market (economics) 2 14.3%
Mechanical engineering 2 14.3%
Metal 2 14.3%
Natural gas 2 14.3%
Natural resource 2 14.3%
Non-governmental organization 2 14.3%
Personal protective equipment 2 14.3%
Pollution 2 14.3%
Poverty 2 14.3%
Public transport 2 14.3%
Punching 2 14.3%
Radial arm saw 2 14.3%
Rain 2 14.3%
Renewable energy 2 14.3%
Risk management 2 14.3%
Robot 2 14.3%
Robotics 2 14.3%
Scanning electron microscope 2 14.3%
Sustainable development 2 14.3%
Sustainable transport 2 14.3%
System 2 14.3%
Waste management 2 14.3%
Water quality 2 14.3%
Water resource management 2 14.3%
Wood shaper 2 14.3%
.410 bore 1 7.1%
9×19mm Parabellum 1 7.1%
Abrasive 1 7.1%
Acid rain 1 7.1%
Adjustable-speed drive 1 7.1%
Agricultural productivity 1 7.1%
Agroforestry 1 7.1%
Agronomy 1 7.1%
Air gun 1 7.1%
Airsoft 1 7.1%
Airsoft gun 1 7.1%
Algal bloom 1 7.1%
Alloy 1 7.1%
Alternating current 1 7.1%
Aluminium 1 7.1%
Ammunition 1 7.1%
Anodizing 1 7.1%
Anthropogenic hazard 1 7.1%
Applied and interdisciplinary physics 1 7.1%
Aquaculture 1 7.1%
Aquifer 1 7.1%
Artificial materials 1 7.1%
Artificial objects 1 7.1%
Atmosphere of Earth 1 7.1%
Atom 1 7.1%
Atomic absorption spectroscopy 1 7.1%
Automation 1 7.1%
Benchmarking 1 7.1%
Best practice 1 7.1%
Bicycle 1 7.1%
Biochemical oxygen demand 1 7.1%
Biodiversity 1 7.1%
Bioenergy 1 7.1%
Biofuel 1 7.1%
Biorefinery 1 7.1%
Biosafety cabinet 1 7.1%
Blank (cartridge) 1 7.1%
Bullet 1 7.1%
Bus 1 7.1%
CT scan 1 7.1%
Cadmium 1 7.1%
Caliber 1 7.1%
Capacity building 1 7.1%
Cartridge (firearms) 1 7.1%
Centerfire ammunition 1 7.1%
Changwon 1 7.1%
Chemical industry 1 7.1%
Chemical oxygen demand 1 7.1%
Chemical substances 1 7.1%
Chemometrics 1 7.1%
Chromium 1 7.1%
City 1 7.1%
Clean Air Act of 1963 1 7.1%
Clean Water Act 1 7.1%
Climate change adaptation 1 7.1%
Climate change mitigation 1 7.1%
Climate resilience 1 7.1%
Clothing 1 7.1%
Clutch 1 7.1%
Coast 1 7.1%
Coastal management 1 7.1%
Combined sewer 1 7.1%
Combustibility and flammability 1 7.1%
Combustion 1 7.1%
Compressor 1 7.1%
Conservation (ethic) 1 7.1%
Conservation agriculture 1 7.1%
Conservation movement 1 7.1%
Contour plowing 1 7.1%
Corrosion 1 7.1%
Cost-effectiveness analysis 1 7.1%
Crop rotation 1 7.1%
Data analysis 1 7.1%
Daubert standard 1 7.1%
Decision-making 1 7.1%
Deforestation 1 7.1%
Demand 1 7.1%
Density 1 7.1%
Developing country 1 7.1%
Dioxins and dioxin-like compounds 1 7.1%
Disaster 1 7.1%
Distributed generation 1 7.1%
Drought 1 7.1%
Dryland farming 1 7.1%
Economic development 1 7.1%
Ecosystem management 1 7.1%
Ecosystem services 1 7.1%
Effects of global warming 1 7.1%
Electric energy consumption 1 7.1%
Electric motor 1 7.1%
Electric power 1 7.1%
Electric power transmission 1 7.1%
Electrical grid 1 7.1%
Electricity 1 7.1%
Electricity pricing 1 7.1%
Electrification 1 7.1%
Electron 1 7.1%
Electron shell 1 7.1%
Electroplating 1 7.1%
Elevator 1 7.1%
Ellipsometry 1 7.1%
Emergency 1 7.1%
Emergency management 1 7.1%
Emission spectrum 1 7.1%
Endangered Species Act of 1973 1 7.1%
Endangered species 1 7.1%
Energy audit 1 7.1%
Energy development 1 7.1%
Energy management 1 7.1%
Energy service company 1 7.1%
Energy storage 1 7.1%
Energy-dispersive X-ray spectroscopy 1 7.1%
Engine 1 7.1%
Environment 1 7.1%
Environmental conservation 1 7.1%
Environmental education 1 7.1%
Environmental impact assessment 1 7.1%
Environmental issues 1 7.1%
Environmental law 1 7.1%
Environmental monitoring 1 7.1%
Environmental policy 1 7.1%
Environmental protection 1 7.1%
Environmental resource management 1 7.1%
Environmental social science 1 7.1%
Environmentalism 1 7.1%
Epidemiology 1 7.1%
Epoxy 1 7.1%
Equipment 1 7.1%
Evapotranspiration 1 7.1%
Extinction 1 7.1%
FDA warning letter 1 7.1%
Factory 1 7.1%
Fan (machine) 1 7.1%
Farmer 1 7.1%
Fire 1 7.1%
Firearm 1 7.1%
Firearms 1 7.1%
Fluid dynamics 1 7.1%
Fluid power 1 7.1%
Fluorescence 1 7.1%
Food prices 1 7.1%
Food security 1 7.1%
Forensic identification 1 7.1%
Forensic science 1 7.1%
Fossil fuel 1 7.1%
Fuel efficiency 1 7.1%
Gauge (firearms) 1 7.1%
Gear 1 7.1%
Global warming 1 7.1%
Glock 1 7.1%
Governance 1 7.1%
Green building 1 7.1%
Greenhouse effect 1 7.1%
Grinding wheel 1 7.1%
Gross domestic product 1 7.1%
Ground (electricity) 1 7.1%
Groundwater 1 7.1%
Groundwater recharge 1 7.1%
Gun 1 7.1%
Gun barrel 1 7.1%
Gunshot residue 1 7.1%
Hammer (firearms) 1 7.1%
Handgun 1 7.1%
Heat 1 7.1%
Heat recovery ventilation 1 7.1%
Heating, ventilation, and air conditioning 1 7.1%
Horsepower 1 7.1%
Hydraulic fracturing 1 7.1%
Hydrology 1 7.1%
Hydrothermal carbonization 1 7.1%
ISO 50001 1 7.1%
Illegal, unreported and unregulated fishing 1 7.1%
Incentive 1 7.1%
Incident management 1 7.1%
Incineration 1 7.1%
Indoor air quality 1 7.1%
Induction motor 1 7.1%
Inductively coupled plasma mass spectrometry 1 7.1%
Infiltration (hydrology) 1 7.1%
Inspection 1 7.1%
Insurance 1 7.1%
Integrated coastal zone management 1 7.1%
Invasive species 1 7.1%
Investment 1 7.1%
Ionization 1 7.1%
Irrigation 1 7.1%
Jointer 1 7.1%
Kilowatt hour 1 7.1%
Laboratory 1 7.1%
Labour economics 1 7.1%
Land management 1 7.1%
Land reclamation 1 7.1%
Land trust 1 7.1%
Landfill 1 7.1%
Laser 1 7.1%
Law 1 7.1%
Lead 1 7.1%
Leadership in Energy and Environmental Design 1 7.1%
Leak 1 7.1%
Leak detection 1 7.1%
Linear no-threshold model 1 7.1%
Lockout-tagout 1 7.1%
Lockout–tagout 1 7.1%
Low-carbon economy 1 7.1%
Magazine (firearms) 1 7.1%
Mangrove 1 7.1%
Marine pollution 1 7.1%
Mass spectrometry 1 7.1%
Materials 1 7.1%
Mathematical optimization 1 7.1%
Mechanism (engineering) 1 7.1%
Mercury (element) 1 7.1%
Microscopy 1 7.1%
Moving parts 1 7.1%
Mudflat 1 7.1%
Mulch 1 7.1%
National Ambient Air Quality Standards 1 7.1%
National Organic Program 1 7.1%
Natural disaster 1 7.1%
Natural materials 1 7.1%
Natural resource management 1 7.1%
Natural resources 1 7.1%
Negligence 1 7.1%
Non-lethal weapon 1 7.1%
Numerical control 1 7.1%
Obesity 1 7.1%
Occupational Safety and Health Act (United States) 1 7.1%
Oil well 1 7.1%
Optical microscope 1 7.1%
Optimism 1 7.1%
Organic certification 1 7.1%
Organic farming 1 7.1%
Oxide 1 7.1%
Ozone 1 7.1%
Paint 1 7.1%
Particulates 1 7.1%
Passivation (chemistry) 1 7.1%
Pellet (air gun) 1 7.1%
Penetrating trauma 1 7.1%
Performance appraisal 1 7.1%
Petroleum 1 7.1%
Physical chemistry 1 7.1%
Physical sciences 1 7.1%
Pipeline transport 1 7.1%
Plantation 1 7.1%
Plastic 1 7.1%
Poverty reduction 1 7.1%
Powder-actuated tool 1 7.1%
Power electronics 1 7.1%
Power inverter 1 7.1%
Premium efficiency 1 7.1%
Primary industries 1 7.1%
Primary sector of the economy 1 7.1%
Primer (paint) 1 7.1%
Printed circuit board 1 7.1%
Productivity 1 7.1%
Program evaluation 1 7.1%
Projectile weapons 1 7.1%
Projectiles 1 7.1%
Protected area 1 7.1%
Public health 1 7.1%
Public–private partnership 1 7.1%
Pump 1 7.1%
Pump action 1 7.1%
Rail transport 1 7.1%
Rainfed agriculture 1 7.1%
Rainwater harvesting 1 7.1%
Raman spectroscopy 1 7.1%
Reasonable person 1 7.1%
Reclaimed water 1 7.1%
Regulation 1 7.1%
Renewable energy commercialization 1 7.1%
Residual-current device 1 7.1%
Resource Conservation and Recovery Act 1 7.1%
Restoration ecology 1 7.1%
Restriction of Hazardous Substances Directive 1 7.1%
Revolver 1 7.1%
Ricochet 1 7.1%
Rifle 1 7.1%
Rifling 1 7.1%
Right to know 1 7.1%
Rimfire ammunition 1 7.1%
Risk assessment 1 7.1%
Road traffic safety 1 7.1%
Safety data sheet 1 7.1%
Safety sign 1 7.1%
Sawed-off shotgun 1 7.1%
Science 1 7.1%
Scientific method 1 7.1%
Sea 1 7.1%
Sea level rise 1 7.1%
Semi-automatic pistol 1 7.1%
Servomechanism 1 7.1%
Sewage 1 7.1%
Sewage treatment 1 7.1%
Shale gas 1 7.1%
Shotgun 1 7.1%
Shotgun shell 1 7.1%
Smart growth 1 7.1%
Sodium bicarbonate 1 7.1%
Sodium hydroxide 1 7.1%
Soil 1 7.1%
Solar energy 1 7.1%
Solder 1 7.1%
Special education 1 7.1%
Spectroscopy 1 7.1%
Statistical inference 1 7.1%
Statistics 1 7.1%
Subsidy 1 7.1%
Suburb 1 7.1%
Surface runoff 1 7.1%
Surveillance 1 7.1%
Sustainable agriculture 1 7.1%
Sustainable energy 1 7.1%
Sustainable living 1 7.1%
Sustainable technologies 1 7.1%
Systems ecology 1 7.1%
Tax 1 7.1%
Teacher 1 7.1%
Terminal ballistics 1 7.1%
Throttle 1 7.1%
Time 1 7.1%
Tools 1 7.1%
Top-down and bottom-up design 1 7.1%
Tort 1 7.1%
Toxic equivalency factor 1 7.1%
Toxicity 1 7.1%
Transit bus 1 7.1%
Transmission (mechanics) 1 7.1%
Transpiration 1 7.1%
Trigger (firearms) 1 7.1%
Tripod 1 7.1%
Tropical cyclone 1 7.1%
Tsunami 1 7.1%
United Nations Conference on Sustainable Development 1 7.1%
Urban planning 1 7.1%
Urban sprawl 1 7.1%
Volatile organic compound 1 7.1%
Voltammetry 1 7.1%
Wastewater 1 7.1%
Water conservation 1 7.1%
Water footprint 1 7.1%
Water resources 1 7.1%
Water scarcity 1 7.1%
Water supply 1 7.1%
Wealth 1 7.1%
Weapons 1 7.1%
Wear 1 7.1%
Web page 1 7.1%
Wetland 1 7.1%
Wind 1 7.1%
World energy consumption 1 7.1%
X-ray 1 7.1%
X-ray absorption near edge structure 1 7.1%
X-ray fluorescence 1 7.1%
X-ray microtomography 1 7.1%
X-ray photoelectron spectroscopy 1 7.1%

2014

abs rel
Risk 10 83.3%
Human activities 8 66.7%
Safety 7 58.3%
Emergency management 6 50.0%
Evaluation 6 50.0%
Research 6 50.0%
Goal 5 41.7%
Health 5 41.7%
Regulatory compliance 5 41.7%
Risk assessment 5 41.7%
Specification (technical standard) 5 41.7%
Audit 4 33.3%
Fire sprinkler system 4 33.3%
Firefighter 4 33.3%
Institutional review board 4 33.3%
Administration of federal assistance in the United States 3 25.0%
Agriculture 3 25.0%
Business 3 25.0%
Construction 3 25.0%
Emergency 3 25.0%
Employment 3 25.0%
Expense 3 25.0%
Fire safety 3 25.0%
Hazard 3 25.0%
Information 3 25.0%
Management 3 25.0%
Procurement 3 25.0%
Purchasing 3 25.0%
Water 3 25.0%
Board of directors 2 16.7%
Chemical engineering 2 16.7%
Computer security 2 16.7%
Contract 2 16.7%
Cost–benefit analysis 2 16.7%
Disability 2 16.7%
Economics 2 16.7%
Engineering 2 16.7%
Government 2 16.7%
Hydrocarbon 2 16.7%
Inspection 2 16.7%
National Information Exchange Model 2 16.7%
Nature 2 16.7%
Occupational safety and health 2 16.7%
Oil refinery 2 16.7%
Organization 2 16.7%
Petroleum 2 16.7%
Public sphere 2 16.7%
Rehabilitation Act of 1973 2 16.7%
Reliability engineering 2 16.7%
Risk management 2 16.7%
Simulation 2 16.7%
Single Audit 2 16.7%
Smoke detector 2 16.7%
Soil 2 16.7%
Sustainability 2 16.7%
Vulnerability (computing) 2 16.7%
Wetland 2 16.7%
ALARP 1 8.3%
Abstract (summary) 1 8.3%
Accounting 1 8.3%
Advertising campaign 1 8.3%
Alternative dispute resolution 1 8.3%
Americans with Disabilities Act of 1990 1 8.3%
Ammonia 1 8.3%
Analysis 1 8.3%
Animal welfare 1 8.3%
Archaeology 1 8.3%
Artificial intelligence 1 8.3%
Artificial objects 1 8.3%
Asbestos 1 8.3%
Atmospheric dispersion modeling 1 8.3%
Auditor's report 1 8.3%
Automation 1 8.3%
Barcelona Convention 1 8.3%
Barley 1 8.3%
Beer 1 8.3%
Brand 1 8.3%
Bread 1 8.3%
Brewing 1 8.3%
Building regulations in the United Kingdom 1 8.3%
California Environmental Quality Act 1 8.3%
Caregiver 1 8.3%
Caribbean 1 8.3%
Catalysis 1 8.3%
Catalytic reforming 1 8.3%
Cereal 1 8.3%
Chemical process engineering 1 8.3%
Chemical substances 1 8.3%
Chemistry 1 8.3%
Chlorine 1 8.3%
Civil Rights Act of 1964 1 8.3%
Classified information 1 8.3%
Climate 1 8.3%
Climate change 1 8.3%
Climate change adaptation 1 8.3%
Climate change mitigation 1 8.3%
Climate change scenario 1 8.3%
Coastal flood 1 8.3%
Cogeneration 1 8.3%
Combustibility and flammability 1 8.3%
Combustion 1 8.3%
Communication 1 8.3%
Compliance requirements 1 8.3%
Control of Major Accident Hazards Regulations 2015 1 8.3%
Copyright 1 8.3%
Cracking (chemistry) 1 8.3%
Crop residue 1 8.3%
Crop rotation 1 8.3%
Dangerous goods 1 8.3%
Database 1 8.3%
Delayed coker 1 8.3%
Design 1 8.3%
Diesel fuel 1 8.3%
Drinking water 1 8.3%
Earth sciences 1 8.3%
Earthquake 1 8.3%
Earthquake engineering 1 8.3%
Ecology 1 8.3%
Economic growth 1 8.3%
Economics of climate change mitigation 1 8.3%
Economics of global warming 1 8.3%
Economy 1 8.3%
Effects of global warming 1 8.3%
El Niño 1 8.3%
Energy Performance Certificate (United Kingdom) 1 8.3%
Energy conservation 1 8.3%
Environmental impact assessment 1 8.3%
Environmental protection 1 8.3%
Environmental science 1 8.3%
Erosion 1 8.3%
Explosive 1 8.3%
Extreme weather 1 8.3%
Federal Acquisition Regulation 1 8.3%
Fee 1 8.3%
Financial audit 1 8.3%
Financial statement 1 8.3%
Flood 1 8.3%
Flour 1 8.3%
Fluid catalytic cracking 1 8.3%
Fluorine 1 8.3%
Food 1 8.3%
Food and drink 1 8.3%
Food extrusion 1 8.3%
Food industry 1 8.3%
Freedom of Information Act (United States) 1 8.3%
Fuel 1 8.3%
Fuels 1 8.3%
Fungicide 1 8.3%
Fungus 1 8.3%
Fusarium 1 8.3%
Fusarium culmorum 1 8.3%
Fusarium ear blight 1 8.3%
Gas flare 1 8.3%
Gases 1 8.3%
Gasoline 1 8.3%
General contractor 1 8.3%
Gibberella zeae 1 8.3%
Grain drying 1 8.3%
Greenhouse gas 1 8.3%
Gross domestic product 1 8.3%
Groundwater 1 8.3%
Groundwater recharge 1 8.3%
Hazard analysis 1 8.3%
Hazard analysis and critical control points 1 8.3%
Hazard and operability study 1 8.3%
Human factors and ergonomics 1 8.3%
Human impact on the environment 1 8.3%
Hurricane Ivan 1 8.3%
Hydrodesulfurization 1 8.3%
Hydrogen 1 8.3%
Hydrogen peroxide 1 8.3%
Incident Command System 1 8.3%
Indirect costs 1 8.3%
Information technology 1 8.3%
Innovation 1 8.3%
Insurance 1 8.3%
Interest 1 8.3%
Internal control 1 8.3%
Internet forum 1 8.3%
Laboratory 1 8.3%
Land-use planning 1 8.3%
Laser 1 8.3%
Legal person 1 8.3%
Liquefied petroleum gas 1 8.3%
Local government 1 8.3%
Logo 1 8.3%
Lung cancer 1 8.3%
Maintenance (technical) 1 8.3%
Maize 1 8.3%
Malt 1 8.3%
Malting 1 8.3%
Manufacturing 1 8.3%
Market surveillance (products) 1 8.3%
Marketing 1 8.3%
Materials 1 8.3%
Materials science 1 8.3%
Mesothelioma 1 8.3%
Microgeneration 1 8.3%
Mycotoxin 1 8.3%
Nanoparticle 1 8.3%
National Environmental Policy Act 1 8.3%
Natural environment 1 8.3%
Natural gas 1 8.3%
Nonprofit organization 1 8.3%
Oil spill 1 8.3%
Optical fiber 1 8.3%
Outer space 1 8.3%
Ownership 1 8.3%
Oxide 1 8.3%
Patriot Act 1 8.3%
Penicillium verrucosum 1 8.3%
Personally identifiable information 1 8.3%
Petroleum coke 1 8.3%
Phosgene 1 8.3%
Physical geography 1 8.3%
Physical sciences 1 8.3%
Pipeline transport 1 8.3%
Plant breeding 1 8.3%
Pollution 1 8.3%
Precipitation 1 8.3%
Prevention 1 8.3%
Preventive healthcare 1 8.3%
Privacy 1 8.3%
Propane 1 8.3%
Property 1 8.3%
Qualitative research 1 8.3%
Quality assurance 1 8.3%
Quality management 1 8.3%
Radiation-induced cancer 1 8.3%
Representative Concentration Pathway 1 8.3%
Request for proposal 1 8.3%
Safety case 1 8.3%
Safety data sheet 1 8.3%
Safety management system 1 8.3%
Science 1 8.3%
Sea 1 8.3%
Sea level rise 1 8.3%
Search engine optimization 1 8.3%
Section 504 of the Rehabilitation Act 1 8.3%
Seismic analysis 1 8.3%
Seismology 1 8.3%
Sensitive Security Information 1 8.3%
Sensitive but unclassified 1 8.3%
Sewage treatment 1 8.3%
Stafford Disaster Relief and Emergency Assistance Act 1 8.3%
Steam 1 8.3%
Stern Review 1 8.3%
Storm 1 8.3%
Storm surge 1 8.3%
Student financial aid (United States) 1 8.3%
System 1 8.3%
System safety 1 8.3%
Tax 1 8.3%
Tax refund 1 8.3%
Teacher 1 8.3%
Technology 1 8.3%
The Green Deal 1 8.3%
Thermal power station 1 8.3%
Tissue engineering 1 8.3%
Title IX 1 8.3%
Toxicity 1 8.3%
Training 1 8.3%
Tropical cyclone 1 8.3%
Uncertainty 1 8.3%
United States Code 1 8.3%
Vomitoxin 1 8.3%
Waste 1 8.3%
Wastewater 1 8.3%
Wastewater treatment 1 8.3%
Water resources 1 8.3%
Water scarcity 1 8.3%
Weather 1 8.3%
Welfare 1 8.3%
Wheat 1 8.3%
XML 1 8.3%
XML schema 1 8.3%

2015

abs rel
Human activities 8 44.4%
Risk 7 38.9%
Chemistry 6 33.3%
Natural gas 5 27.8%
Nature 5 27.8%
Safety 5 27.8%
Audit 4 22.2%
Greenhouse gas 4 22.2%
Human impact on the environment 4 22.2%
Agriculture 3 16.7%
Air pollution 3 16.7%
Artificial objects 3 16.7%
Emergency management 3 16.7%
Engineering 3 16.7%
Environmental issues 3 16.7%
Health 3 16.7%
Hydrocarbon 3 16.7%
Natural environment 3 16.7%
Risk assessment 3 16.7%
Technology 3 16.7%
Water 3 16.7%
ALARP 2 11.1%
Business 2 11.1%
California Environmental Quality Act 2 11.1%
Chemical process engineering 2 11.1%
Chemical substances 2 11.1%
Clean Air Act (United States) 2 11.1%
Climate change 2 11.1%
Climate change mitigation 2 11.1%
Diesel fuel 2 11.1%
Economy 2 11.1%
Emission intensity 2 11.1%
Engineering tolerance 2 11.1%
Evaluation 2 11.1%
Food 2 11.1%
Forest 2 11.1%
Gas flare 2 11.1%
Gases 2 11.1%
Guided wave testing 2 11.1%
Hazard 2 11.1%
Inspection 2 11.1%
Materials 2 11.1%
Nondestructive testing 2 11.1%
Nuclear power 2 11.1%
Nuclear power plant 2 11.1%
Nutrition 2 11.1%
Oil spill 2 11.1%
Oil well 2 11.1%
Particulates 2 11.1%
Petroleum 2 11.1%
Physical sciences 2 11.1%
Pipeline transport 2 11.1%
Pollution 2 11.1%
Polycyclic aromatic hydrocarbon 2 11.1%
Quality assurance 2 11.1%
Reliability engineering 2 11.1%
Research 2 11.1%
Risk management 2 11.1%
Safety case 2 11.1%
Survey methodology 2 11.1%
Toxicity 2 11.1%
Ultrasonic testing 2 11.1%
Ultrasound 2 11.1%
Wood 2 11.1%
.22 Long Rifle 1 5.6%
.45 ACP 1 5.6%
1994 Northridge earthquake 1 5.6%
AR-15 style rifle 1 5.6%
Acid rain 1 5.6%
Act on Securing Quality, Efficacy and Safety of Products Including Pharmaceuticals and Medical Devices 1 5.6%
Administration of federal assistance in the United States 1 5.6%
Agricultural machinery 1 5.6%
Agronomy 1 5.6%
Anaerobic digestion 1 5.6%
Animal husbandry 1 5.6%
Animal welfare 1 5.6%
Antioxidant 1 5.6%
Applied and interdisciplinary physics 1 5.6%
Architect 1 5.6%
Aromatic compound 1 5.6%
Artificial materials 1 5.6%
Assault weapon 1 5.6%
Atherosclerosis 1 5.6%
Atmosphere of Earth 1 5.6%
Atmospheric dispersion modeling 1 5.6%
Automatic firearm 1 5.6%
Barrel (unit) 1 5.6%
Basal area 1 5.6%
Battery cage 1 5.6%
Behavior 1 5.6%
Benzene 1 5.6%
Bioavailability 1 5.6%
Biodegradation 1 5.6%
Biodiversity 1 5.6%
Biogas 1 5.6%
Biological pest control 1 5.6%
Biology 1 5.6%
Biomarker 1 5.6%
Biomass 1 5.6%
Boiling 1 5.6%
Boiling point 1 5.6%
Bolt action 1 5.6%
Broiler 1 5.6%
Building 1 5.6%
Bullet 1 5.6%
Burglary 1 5.6%
CLP Regulation 1 5.6%
Caliber 1 5.6%
Cancer 1 5.6%
Canopy (biology) 1 5.6%
Carbohydrate 1 5.6%
Carbon dioxide 1 5.6%
Carcinogen 1 5.6%
Cardiovascular disease 1 5.6%
Cartridge (firearms) 1 5.6%
Catalysis 1 5.6%
Catalytic reforming 1 5.6%
Cattle 1 5.6%
Census 1 5.6%
Cereal 1 5.6%
Certified wood 1 5.6%
Chemical engineering 1 5.6%
Chicken 1 5.6%
Climate change adaptation 1 5.6%
Climate resilience 1 5.6%
Clinical trial 1 5.6%
Coalbed methane 1 5.6%
Cogeneration 1 5.6%
Combustibility and flammability 1 5.6%
Combustion 1 5.6%
Competition (companies) 1 5.6%
Concrete 1 5.6%
Construction 1 5.6%
Cooking 1 5.6%
Cost–benefit analysis 1 5.6%
Cracking (chemistry) 1 5.6%
Crime 1 5.6%
Crop insurance 1 5.6%
Culture 1 5.6%
Cylinder (firearms) 1 5.6%
Dangerous goods 1 5.6%
Database 1 5.6%
Delayed coker 1 5.6%
Density 1 5.6%
Design 1 5.6%
Diesel exhaust 1 5.6%
Diet (nutrition) 1 5.6%
Dietary fiber 1 5.6%
Dietary supplement 1 5.6%
Differential scanning calorimetry 1 5.6%
Disaster 1 5.6%
Disaster risk reduction 1 5.6%
Domestic pig 1 5.6%
Dose–response relationship 1 5.6%
Dredging 1 5.6%
Drought 1 5.6%
EU FLEGT Action Plan 1 5.6%
Earth rainfall climatology 1 5.6%
Earth sciences 1 5.6%
Earthquake 1 5.6%
Earthquake engineering 1 5.6%
Ecology 1 5.6%
Economics 1 5.6%
Ecosystem 1 5.6%
Emergency 1 5.6%
Emission inventory 1 5.6%
Endocrine disruptor 1 5.6%
Endothelium 1 5.6%
Energy 1 5.6%
Engineer 1 5.6%
Engineering design process 1 5.6%
Enhanced oil recovery 1 5.6%
Environmental monitoring 1 5.6%
Environmental remediation 1 5.6%
Environmental science 1 5.6%
Environmental social science 1 5.6%
Environmental technology 1 5.6%
Epicormic shoot 1 5.6%
Estuary 1 5.6%
Eutrophication 1 5.6%
Exhaust gas 1 5.6%
Exposure assessment 1 5.6%
Extraction of petroleum 1 5.6%
Farm 1 5.6%
Federal Assault Weapons Ban 1 5.6%
Fertilizer 1 5.6%
Fire safety 1 5.6%
Fire sprinkler system 1 5.6%
Firearm 1 5.6%
Firearms 1 5.6%
Firefighter 1 5.6%
Flavonoid 1 5.6%
Flood 1 5.6%
Fluid catalytic cracking 1 5.6%
Food and drink 1 5.6%
Food choice 1 5.6%
Food industry 1 5.6%
Food ingredients 1 5.6%
Food security 1 5.6%
Foods 1 5.6%
Formaldehyde 1 5.6%
Fossil fuels 1 5.6%
Fresh water 1 5.6%
Freshwater acidification 1 5.6%
Fuel 1 5.6%
Fuel production 1 5.6%
Fuels 1 5.6%
Functional safety 1 5.6%
Fungus 1 5.6%
Gas 1 5.6%
Gasoline 1 5.6%
Global warming potential 1 5.6%
Goal 1 5.6%
Good laboratory practice 1 5.6%
Government procurement in the United States 1 5.6%
Greenhouse effect 1 5.6%
Greenhouse gas inventory 1 5.6%
Gun 1 5.6%
Gun barrel 1 5.6%
Gun control 1 5.6%
Gun politics in the United States 1 5.6%
Gun violence in the United States 1 5.6%
Handgun 1 5.6%
Hayward Fault Zone 1 5.6%
Health sciences 1 5.6%
Home insurance 1 5.6%
Homicide 1 5.6%
Hunting 1 5.6%
Hydraulic fracturing 1 5.6%
Hydrocarbons 1 5.6%
Hydrodesulfurization 1 5.6%
IEC 61508 1 5.6%
ISO 13485 1 5.6%
Industries (economics) 1 5.6%
Inflammation 1 5.6%
Infrastructure 1 5.6%
Inhalation exposure 1 5.6%
Institutional review board 1 5.6%
Insulin resistance 1 5.6%
Insurance 1 5.6%
Intensive pig farming 1 5.6%
Interest 1 5.6%
Japanese Industrial Standards 1 5.6%
Kingdoms (biology) 1 5.6%
Kyoto Protocol 1 5.6%
Lahar 1 5.6%
Land tenure 1 5.6%
Land use, land-use change, and forestry 1 5.6%
Law 1 5.6%
Leaf 1 5.6%
Leak detection 1 5.6%
Legume 1 5.6%
Level of service 1 5.6%
Lever action 1 5.6%
Lipid 1 5.6%
Lipid peroxidation 1 5.6%
Lipoprotein 1 5.6%
Liquefied natural gas 1 5.6%
Liquefied petroleum gas 1 5.6%
Liquid 1 5.6%
Livestock 1 5.6%
Magazine (firearms) 1 5.6%
Management 1 5.6%
Manila Trench 1 5.6%
Manufacturing 1 5.6%
Market (economics) 1 5.6%
Maximum sustained wind 1 5.6%
Measurement 1 5.6%
Measurement uncertainty 1 5.6%
Meat 1 5.6%
Medical device 1 5.6%
Medicine 1 5.6%
Melting point 1 5.6%
Metabolism 1 5.6%
Methane 1 5.6%
Metro Manila 1 5.6%
Mire 1 5.6%
Mount Pinatubo 1 5.6%
Murder 1 5.6%
Muzzle brake 1 5.6%
Mycology 1 5.6%
NOx 1 5.6%
National Firearms Act 1 5.6%
National Instant Criminal Background Check System 1 5.6%
Natural disaster 1 5.6%
Natural hazard 1 5.6%
Natural resources 1 5.6%
Nutrient 1 5.6%
Oak 1 5.6%
Oil refinery 1 5.6%
Oil reserves 1 5.6%
Operating theater 1 5.6%
Organisms 1 5.6%
Overview of gun laws by nation 1 5.6%
Oxidative stress 1 5.6%
Ozone 1 5.6%
Paperwork Reduction Act 1 5.6%
Paris 1 5.6%
Peat 1 5.6%
Pesticide 1 5.6%
Petroleum coke 1 5.6%
Petroleum industry 1 5.6%
Petroleum reservoir 1 5.6%
Physical chemistry 1 5.6%
Pig 1 5.6%
Pig farming 1 5.6%
Plant 1 5.6%
Plantation 1 5.6%
Plants 1 5.6%
Polyphenol 1 5.6%
Polysaccharide 1 5.6%
Poultry farming 1 5.6%
Pressure 1 5.6%
Printz v. United States 1 5.6%
Procurement 1 5.6%
Projectile weapons 1 5.6%
Projectiles 1 5.6%
Propane 1 5.6%
Psychological resilience 1 5.6%
Pteridium aquilinum 1 5.6%
Pulp (paper) 1 5.6%
Pump action 1 5.6%
Purchasing 1 5.6%
Quantitative structure–activity relationship 1 5.6%
Radical (chemistry) 1 5.6%
Radioactive contamination 1 5.6%
Rain 1 5.6%
Rapeseed 1 5.6%
Reboot 1 5.6%
Recoil 1 5.6%
Registration, Evaluation, Authorisation and Restriction of Chemicals 1 5.6%
Regulatory compliance 1 5.6%
Reinforced concrete 1 5.6%
Relative density 1 5.6%
Relative humidity 1 5.6%
Revolver 1 5.6%
Rifle 1 5.6%
Ring of Fire 1 5.6%
Rulemaking 1 5.6%
Safety data sheet 1 5.6%
Sandy Hook Elementary School shooting 1 5.6%
Sea 1 5.6%
Second Amendment to the United States Constitution 1 5.6%
Seismic analysis 1 5.6%
Seismic hazard 1 5.6%
Seismic retrofit 1 5.6%
Seismic risk 1 5.6%
Seismology 1 5.6%
Semi-automatic firearm 1 5.6%
Sewage treatment 1 5.6%
Shale gas 1 5.6%
Shear wall 1 5.6%
Shotgun 1 5.6%
Shotgun shell 1 5.6%
Silencer (firearms) 1 5.6%
Silviculture 1 5.6%
Single Audit 1 5.6%
Smoke detector 1 5.6%
Snag (ecology) 1 5.6%
Societal collapse 1 5.6%
Soil 1 5.6%
Soil liquefaction 1 5.6%
Solution 1 5.6%
Soot 1 5.6%
Species 1 5.6%
Specification (technical standard) 1 5.6%
Sporocarp (fungi) 1 5.6%
Standardization 1 5.6%
Statistics 1 5.6%
Sterilization (microbiology) 1 5.6%
Stock (firearms) 1 5.6%
Storm 1 5.6%
Stress (biology) 1 5.6%
Structural engineering 1 5.6%
Surgery 1 5.6%
Sustainability 1 5.6%
Tax 1 5.6%
Temperature 1 5.6%
Transpiration 1 5.6%
Tree 1 5.6%
Trigger (firearms) 1 5.6%
Tropical cyclone 1 5.6%
Tropospheric ozone 1 5.6%
Trunk (botany) 1 5.6%
Tsunami 1 5.6%
Typhoon Haikui 1 5.6%
Typhoon Haiyan 1 5.6%
Typhoon Ketsana 1 5.6%
Typhoon Xangsane 1 5.6%
Unconventional oil 1 5.6%
United Nations Framework Convention on Climate Change 1 5.6%
United States farm bill 1 5.6%
Universal background check 1 5.6%
Usability 1 5.6%
Vapor pressure 1 5.6%
Vitamin 1 5.6%
Vitamin C 1 5.6%
Vitamin E 1 5.6%
Volcanic ash 1 5.6%
Volcano 1 5.6%
Vulnerability 1 5.6%
Vulnerability (computing) 1 5.6%
Waste 1 5.6%
Wastewater treatment 1 5.6%
Water resources 1 5.6%
Water scarcity 1 5.6%
Weapons 1 5.6%
Weed 1 5.6%
Wheat 1 5.6%
Wind 1 5.6%

2016

abs rel
Human activities 13 52.0%
Risk 11 44.0%
Safety 10 40.0%
Chemistry 9 36.0%
Natural gas 9 36.0%
Water 9 36.0%
Employment 8 32.0%
Risk assessment 8 32.0%
Greenhouse gas 7 28.0%
Occupational safety and health 7 28.0%
Pipeline transport 7 28.0%
Technology 7 28.0%
Health 6 24.0%
Nature 6 24.0%
Petroleum 6 24.0%
Regulatory compliance 6 24.0%
Risk management 6 24.0%
Agriculture 5 20.0%
Carbon dioxide 5 20.0%
Construction 5 20.0%
Energy 5 20.0%
Hazard 5 20.0%
Physical sciences 5 20.0%
Air pollution 4 16.0%
Artificial objects 4 16.0%
Barrel (unit) 4 16.0%
Chemical process engineering 4 16.0%
Education 4 16.0%
Emergency management 4 16.0%
Enhanced oil recovery 4 16.0%
Heating, ventilation, and air conditioning 4 16.0%
Hydraulic fracturing 4 16.0%
Hydrocarbons 4 16.0%
Life-cycle assessment 4 16.0%
Oil well 4 16.0%
Petroleum reservoir 4 16.0%
Shale gas 4 16.0%
Tight oil 4 16.0%
Carbon capture and storage 3 12.0%
Chemical substances 3 12.0%
Coalbed methane 3 12.0%
Economy 3 12.0%
Environmental impact assessment 3 12.0%
Extraction of petroleum 3 12.0%
Fossil fuels 3 12.0%
Fuels 3 12.0%
Gases 3 12.0%
Hydrocarbon 3 12.0%
Hydrogen sulfide 3 12.0%
Inspection 3 12.0%
Natural-gas processing 3 12.0%
Petroleum industry 3 12.0%
Pollution 3 12.0%
Registration, Evaluation, Authorisation and Restriction of Chemicals 3 12.0%
Safety data sheet 3 12.0%
Unconventional oil 3 12.0%
ALARP 2 8.0%
Applied and interdisciplinary physics 2 8.0%
Automation 2 8.0%
Big data 2 8.0%
Boiler 2 8.0%
Business 2 8.0%
Clean Power Plan 2 8.0%
Climate change 2 8.0%
Climate change mitigation 2 8.0%
Combustibility and flammability 2 8.0%
Combustion 2 8.0%
Drilling rig 2 8.0%
Earth sciences 2 8.0%
Economics 2 8.0%
Efficient energy use 2 8.0%
Emergency 2 8.0%
Energy development 2 8.0%
Energy industry 2 8.0%
Engineering 2 8.0%
Environmental science 2 8.0%
Externality 2 8.0%
Fire 2 8.0%
Fire safety 2 8.0%
Firefighter 2 8.0%
Food 2 8.0%
Fuel production 2 8.0%
Government 2 8.0%
Hazard and operability study 2 8.0%
Information 2 8.0%
Infrastructure 2 8.0%
Innovation 2 8.0%
Liquid 2 8.0%
Maintenance (technical) 2 8.0%
Management 2 8.0%
Mauna Kea 2 8.0%
Natural environment 2 8.0%
Natural-gas condensate 2 8.0%
Nonprofit organization 2 8.0%
Observatory 2 8.0%
Oil refinery 2 8.0%
Oil reserves 2 8.0%
Personal protective equipment 2 8.0%
Procurement 2 8.0%
Pump 2 8.0%
Quality assurance 2 8.0%
Reliability engineering 2 8.0%
Renewable energy 2 8.0%
Research 2 8.0%
Rulemaking 2 8.0%
Scanning electron microscope 2 8.0%
Science, technology, engineering, and mathematics 2 8.0%
Sewage treatment 2 8.0%
Sustainability 2 8.0%
Teacher 2 8.0%
Thirty Meter Telescope 2 8.0%
Toxicity 2 8.0%
Transport 2 8.0%
United States farm bill 2 8.0%
Valve 2 8.0%
Waste 2 8.0%
Waste management 2 8.0%
Water heating 2 8.0%
Academic degree 1 4.0%
Activated sludge 1 4.0%
Adenosine triphosphate 1 4.0%
Aerial work platform 1 4.0%
Agricultural machinery 1 4.0%
Agricultural productivity 1 4.0%
Animal testing 1 4.0%
Asbestos 1 4.0%
Atmosphere 1 4.0%
Atmospheric dispersion modeling 1 4.0%
Audiogram 1 4.0%
Audit 1 4.0%
Authentication 1 4.0%
Availability 1 4.0%
Backwashing (water treatment) 1 4.0%
Best practice 1 4.0%
Biochemical oxygen demand 1 4.0%
Biodiversity 1 4.0%
Biodiversity loss 1 4.0%
Bioenergy 1 4.0%
Biofuel 1 4.0%
Biology 1 4.0%
Biomass 1 4.0%
Board of directors 1 4.0%
Boiling 1 4.0%
Boiling liquid expanding vapor explosion 1 4.0%
Boiling point 1 4.0%
Branches of science 1 4.0%
Broccoli 1 4.0%
Building regulations in the United Kingdom 1 4.0%
Burden of proof (law) 1 4.0%
Business process 1 4.0%
CLP Regulation 1 4.0%
Casing (borehole) 1 4.0%
Cauliflower 1 4.0%
Census 1 4.0%
Central heating 1 4.0%
Chemical engineering 1 4.0%
Chemical oxygen demand 1 4.0%
Chemical safety assessment 1 4.0%
Chlorine 1 4.0%
Chlorophyll 1 4.0%
Chloroplast 1 4.0%
Chromatography 1 4.0%
Circular economy 1 4.0%
Clean Water Act 1 4.0%
Clinical trial 1 4.0%
Coalescer 1 4.0%
Cofiring 1 4.0%
Color 1 4.0%
Compressor 1 4.0%
Computational fluid dynamics 1 4.0%
Condition monitoring 1 4.0%
Confidentiality 1 4.0%
Confined space 1 4.0%
Contract 1 4.0%
Correlation and dependence 1 4.0%
Cost 1 4.0%
Cost–benefit analysis 1 4.0%
Counterfeit consumer goods 1 4.0%
Crane (machine) 1 4.0%
Crime 1 4.0%
Crop insurance 1 4.0%
Dangerous goods 1 4.0%
Data analysis 1 4.0%
Database 1 4.0%
Debt 1 4.0%
Decibel 1 4.0%
Deep foundation 1 4.0%
Deforestation 1 4.0%
Demolition 1 4.0%
Denitrification 1 4.0%
Density 1 4.0%
Design 1 4.0%
Determinants of health 1 4.0%
Developing country 1 4.0%
Differential scanning calorimetry 1 4.0%
Discounted cash flow 1 4.0%
Discrimination 1 4.0%
Disease 1 4.0%
Distributed control system 1 4.0%
Domestic violence 1 4.0%
Drilling fluid 1 4.0%
Drinking water 1 4.0%
Duct (flow) 1 4.0%
Economic growth 1 4.0%
Ecosystem 1 4.0%
Effects of climate change 1 4.0%
Electron microscope 1 4.0%
Elevator 1 4.0%
Emission intensity 1 4.0%
Emission spectrum 1 4.0%
Enbridge Line 5 1 4.0%
Enbridge Northern Gateway Pipelines 1 4.0%
Energy Star 1 4.0%
Energy conservation 1 4.0%
Energy-dispersive X-ray spectroscopy 1 4.0%
Engineering Critical Assessment 1 4.0%
Engineering design process 1 4.0%
Environmental degradation 1 4.0%
Environmental engineering 1 4.0%
Environmental impact of pharmaceuticals and personal care products 1 4.0%
Environmental issues 1 4.0%
Environmental issues with water 1 4.0%
Environmental scanning electron microscope 1 4.0%
Environmental technology 1 4.0%
Eutrophication 1 4.0%
Evaluation 1 4.0%
Explosive 1 4.0%
Farm 1 4.0%
Fee 1 4.0%
Filtration 1 4.0%
Finance 1 4.0%
Fine (penalty) 1 4.0%
Fire sprinkler system 1 4.0%
First aid 1 4.0%
Flammability limit 1 4.0%
Fluorescence 1 4.0%
Fluorometer 1 4.0%
Food safety 1 4.0%
Food security 1 4.0%
Fourier-transform infrared spectroscopy 1 4.0%
Fruit 1 4.0%
Fuel 1 4.0%
Fuel gas 1 4.0%
Fuel oil 1 4.0%
Gas 1 4.0%
Geotechnical engineering 1 4.0%
Global warming 1 4.0%
Global warming potential 1 4.0%
Globalization 1 4.0%
Goal 1 4.0%
Good laboratory practice 1 4.0%
Governance 1 4.0%
Grant (money) 1 4.0%
Greenhouse gas emissions 1 4.0%
Groundwater 1 4.0%
Growing season 1 4.0%
Harm 1 4.0%
Heat exchanger 1 4.0%
High-performance liquid chromatography 1 4.0%
Hilo, Hawaii 1 4.0%
Human impact on the environment 1 4.0%
Human migration 1 4.0%
Humidity 1 4.0%
Hydrocarbon exploration 1 4.0%
ISO 14000 1 4.0%
Immigration 1 4.0%
Industrial control system 1 4.0%
Information technology 1 4.0%
Infrared spectroscopy 1 4.0%
Institutional review board 1 4.0%
Instrumentation 1 4.0%
Insurance 1 4.0%
Interest 1 4.0%
Internet of things 1 4.0%
Inventory 1 4.0%
Issues in ethics 1 4.0%
Judgment (law) 1 4.0%
Keystone Pipeline 1 4.0%
Labor relations 1 4.0%
Land tenure 1 4.0%
Landlord 1 4.0%
Leadership 1 4.0%
Leak detection 1 4.0%
Lien 1 4.0%
Lifting Operations and Lifting Equipment Regulations 1998 1 4.0%
Liquefied natural gas 1 4.0%
Loan 1 4.0%
Local food 1 4.0%
Logistics 1 4.0%
Low-carbon economy 1 4.0%
Machines 1 4.0%
Maintenance philosophy 1 4.0%
Manufacturing 1 4.0%
Market (economics) 1 4.0%
Materials 1 4.0%
Measurement 1 4.0%
Measurement uncertainty 1 4.0%
Melting point 1 4.0%
Membrane 1 4.0%
Microscopy 1 4.0%
Mixed liquor suspended solids 1 4.0%
NOx 1 4.0%
Nanomaterials 1 4.0%
Nanoparticle 1 4.0%
Nanotechnology 1 4.0%
Needlestick injury 1 4.0%
Net present value 1 4.0%
Noise 1 4.0%
Noise control 1 4.0%
Nuclear magnetic resonance spectroscopy 1 4.0%
Nursing 1 4.0%
Offshore drilling 1 4.0%
Oil platform 1 4.0%
Oil sands 1 4.0%
Oil spill 1 4.0%
Operations management 1 4.0%
Organic farming 1 4.0%
Ozone 1 4.0%
Package boiler 1 4.0%
Paperwork Reduction Act 1 4.0%
Parasitic worm 1 4.0%
Particulates 1 4.0%
Petroleum Administration for Defense Districts 1 4.0%
Photosynthesis 1 4.0%
Physical chemistry 1 4.0%
Physician 1 4.0%
Phytochemical 1 4.0%
Pigging 1 4.0%
Plant 1 4.0%
Polyphenol 1 4.0%
Portable appliance testing 1 4.0%
Positive train control 1 4.0%
Power station 1 4.0%
Prediction 1 4.0%
Pressure 1 4.0%
Pressure vessel 1 4.0%
Prevention 1 4.0%
Price of oil 1 4.0%
Productivity 1 4.0%
Quantitative structure–activity relationship 1 4.0%
Questionnaire 1 4.0%
Reclaimed water 1 4.0%
Recycling 1 4.0%
Reflection seismology 1 4.0%
Regional Input–Output Modeling System 1 4.0%
Relative density 1 4.0%
Reliability-centered maintenance 1 4.0%
Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 1 4.0%
Research and development 1 4.0%
Reservoir 1 4.0%
Resource depletion 1 4.0%
Resource extraction 1 4.0%
Reuse of human excreta 1 4.0%
Robot 1 4.0%
Safety integrity level 1 4.0%
Sand filter 1 4.0%
Science 1 4.0%
Secondary treatment 1 4.0%
Self-employment 1 4.0%
Separator (oil production) 1 4.0%
Septic tank 1 4.0%
Sequencing batch reactor 1 4.0%
Sewage sludge 1 4.0%
Shelf life 1 4.0%
Social cost of carbon 1 4.0%
Solar power 1 4.0%
Solution 1 4.0%
Sound level meter 1 4.0%
Spare part 1 4.0%
Specification (technical standard) 1 4.0%
Spectroscopy 1 4.0%
Statistics 1 4.0%
Steam 1 4.0%
Steam engine 1 4.0%
Subsea (technology) 1 4.0%
Substance of very high concern 1 4.0%
Supply chain 1 4.0%
Supply chain management 1 4.0%
Surveillance 1 4.0%
Survey methodology 1 4.0%
Sustainability and environmental management 1 4.0%
Sustainable technologies 1 4.0%
System 1 4.0%
Systems engineering 1 4.0%
Systems theory 1 4.0%
Tax 1 4.0%
Tax refund 1 4.0%
Temperature 1 4.0%
Test (assessment) 1 4.0%
Thermal analysis 1 4.0%
Thermal efficiency 1 4.0%
Thermogravimetric analysis 1 4.0%
Total organic carbon 1 4.0%
Total suspended solids 1 4.0%
Toxicology 1 4.0%
Training 1 4.0%
Trans Mountain pipeline 1 4.0%
Transplanting 1 4.0%
Tunnel 1 4.0%
Turbidity 1 4.0%
Turgor pressure 1 4.0%
Ultrafiltration 1 4.0%
Unfair labor practice 1 4.0%
Valuation (finance) 1 4.0%
Vapor pressure 1 4.0%
Vegetable 1 4.0%
Vitamin C 1 4.0%
Volatile organic compound 1 4.0%
Vulnerability (computing) 1 4.0%
Wastewater 1 4.0%
Wastewater quality indicators 1 4.0%
Wastewater treatment 1 4.0%
Water pollution 1 4.0%
Water resources 1 4.0%
Water scarcity 1 4.0%
Water treatment 1 4.0%
Welding 1 4.0%
Well 1 4.0%
Well stimulation 1 4.0%
Wind power 1 4.0%
Workers' compensation 1 4.0%
Working conditions 1 4.0%
World energy consumption 1 4.0%
World energy supply and consumption 1 4.0%
X-ray spectroscopy 1 4.0%

2017

abs rel
Human activities 17 70.8%
Economy 11 45.8%
Nature 9 37.5%
Sustainability 9 37.5%
Natural environment 8 33.3%
Employment 7 29.2%
Risk 7 29.2%
Research 6 25.0%
Safety 6 25.0%
Infrastructure 5 20.8%
Renewable energy 5 20.8%
Technology 5 20.8%
Agriculture 4 16.7%
Air pollution 4 16.7%
Aquaculture 4 16.7%
Biodiversity 4 16.7%
Chemistry 4 16.7%
Construction 4 16.7%
Contract 4 16.7%
Economic sectors 4 16.7%
Engineering 4 16.7%
Environmental social science 4 16.7%
Firefighter 4 16.7%
Fishing 4 16.7%
Genotoxicity 4 16.7%
Governance 4 16.7%
Kyoto Protocol 4 16.7%
Paris Agreement 4 16.7%
Physical sciences 4 16.7%
Quantitative structure–activity relationship 4 16.7%
Registration, Evaluation, Authorisation and Restriction of Chemicals 4 16.7%
Transport 4 16.7%
United Nations Framework Convention on Climate Change 4 16.7%
Artificial objects 3 12.5%
Biodegradation 3 12.5%
CLP Regulation 3 12.5%
Carbon price 3 12.5%
Carbon tax 3 12.5%
Dangerous goods 3 12.5%
Desalination 3 12.5%
Differential scanning calorimetry 3 12.5%
Education 3 12.5%
Environmental governance 3 12.5%
Environmental science 3 12.5%
Fire safety 3 12.5%
Forestry 3 12.5%
Fossil fuel 3 12.5%
Good laboratory practice 3 12.5%
Greenhouse gas 3 12.5%
Illegal, unreported and unregulated fishing 3 12.5%
Innovation 3 12.5%
Inspection 3 12.5%
Laudato si' 3 12.5%
Macaronesia 3 12.5%
Management 3 12.5%
Maritime transport 3 12.5%
Melting point 3 12.5%
Natural resource 3 12.5%
Petroleum 3 12.5%
Port 3 12.5%
Quality assurance 3 12.5%
Resource 3 12.5%
Risk assessment 3 12.5%
Safety data sheet 3 12.5%
Sea 3 12.5%
Ship 3 12.5%
Solar power 3 12.5%
Special member state territories and the European Union 3 12.5%
Specification (technical standard) 3 12.5%
Sustainable energy 3 12.5%
Tax 3 12.5%
Tourism 3 12.5%
Toxicity 3 12.5%
Water resources 3 12.5%
Architect 2 8.3%
Best practice 2 8.3%
British Standards 2 8.3%
Building 2 8.3%
Building code 2 8.3%
Building regulations in the United Kingdom 2 8.3%
Business 2 8.3%
Cargo 2 8.3%
Caribbean 2 8.3%
Common Fisheries Policy 2 8.3%
Cruise ship 2 8.3%
Design 2 8.3%
Economic data 2 8.3%
Economic growth 2 8.3%
Ecotourism 2 8.3%
Electric generator 2 8.3%
Energy development 2 8.3%
Entrepreneurship 2 8.3%
Environmental issues 2 8.3%
Evaluation 2 8.3%
Fish hatchery 2 8.3%
Food 2 8.3%
Food and drink 2 8.3%
Forest 2 8.3%
Freezing 2 8.3%
Health 2 8.3%
High-rise building 2 8.3%
History of fire safety legislation in the United Kingdom 2 8.3%
Intended Nationally Determined Contributions 2 8.3%
Inventory 2 8.3%
Life-cycle assessment 2 8.3%
Liquefied natural gas 2 8.3%
Marine energy 2 8.3%
Milk 2 8.3%
Occupational safety and health 2 8.3%
Offshore wind power 2 8.3%
Pension 2 8.3%
Physical chemistry 2 8.3%
Prevention 2 8.3%
Procurement 2 8.3%
Purchasing 2 8.3%
Reducing emissions from deforestation and forest degradation 2 8.3%
Region 2 8.3%
Regulation 2 8.3%
Regulatory compliance 2 8.3%
Risk management 2 8.3%
Ronan Point 2 8.3%
Seaweed 2 8.3%
Sheep 2 8.3%
Sustainable tourism 2 8.3%
Synergy 2 8.3%
System 2 8.3%
Water 2 8.3%
Water pollution 2 8.3%
Wildfire 2 8.3%
Wildfire suppression 2 8.3%
Wind farm 2 8.3%
Wind power 2 8.3%
Absorption (pharmacology) 1 4.2%
Absorption (skin) 1 4.2%
Allegheny National Forest 1 4.2%
American Samoa 1 4.2%
Apiary 1 4.2%
Appalachia 1 4.2%
Applied and interdisciplinary physics 1 4.2%
Appropriations bill (United States) 1 4.2%
Aquifer 1 4.2%
Assay 1 4.2%
Avocado 1 4.2%
Bears Ears National Monument 1 4.2%
Beef 1 4.2%
Biocide 1 4.2%
Biofuel 1 4.2%
Biology 1 4.2%
Biomass 1 4.2%
Black Belt (region of Alabama) 1 4.2%
Boiling 1 4.2%
Boiling point 1 4.2%
Brand 1 4.2%
Bromomethane 1 4.2%
Brownfield land 1 4.2%
Brownian motion 1 4.2%
Calf 1 4.2%
Caloosahatchee River 1 4.2%
Carbon capture and storage 1 4.2%
Carbon dioxide 1 4.2%
Cattle 1 4.2%
Cattle feeding 1 4.2%
Cell membrane 1 4.2%
Chemical industry 1 4.2%
Civil rights movement 1 4.2%
Clean Water Act 1 4.2%
Clean Water Rule 1 4.2%
Climate change 1 4.2%
Climate change mitigation 1 4.2%
Cloud computing 1 4.2%
Cold chain 1 4.2%
Colloid 1 4.2%
Combustibility and flammability 1 4.2%
Competence (human resources) 1 4.2%
Competition (companies) 1 4.2%
Comprehensive Everglades Restoration Plan 1 4.2%
Conservation biology 1 4.2%
Contractual term 1 4.2%
Controlled burn 1 4.2%
Corrective and preventive action 1 4.2%
DLVO theory 1 4.2%
Dairy 1 4.2%
Deforestation 1 4.2%
Delivery (commerce) 1 4.2%
Density 1 4.2%
Diagnosis of HIV/AIDS 1 4.2%
Dispersion (chemistry) 1 4.2%
Double layer (surface science) 1 4.2%
Drinking water 1 4.2%
ELISA 1 4.2%
Earth sciences 1 4.2%
Ecology 1 4.2%
Economy of New Zealand 1 4.2%
Efficient energy use 1 4.2%
Emergency management 1 4.2%
Emission intensity 1 4.2%
Endangered Species Act of 1973 1 4.2%
Endangered species 1 4.2%
Endocytosis 1 4.2%
Energy 1 4.2%
Environment 1 4.2%
Environmental conservation 1 4.2%
Environmental impact assessment 1 4.2%
Environmental remediation 1 4.2%
Everglades 1 4.2%
Exhaust gas 1 4.2%
Exposure assessment 1 4.2%
Farm 1 4.2%
Farmer 1 4.2%
Fat 1 4.2%
Fee 1 4.2%
Fertilizer 1 4.2%
Fire 1 4.2%
Fire sprinkler system 1 4.2%
Fire-adapted communities 1 4.2%
Flocculation 1 4.2%
Florida Bay 1 4.2%
Forecasting 1 4.2%
Foreign direct investment 1 4.2%
Forest Legacy Program 1 4.2%
Gas 1 4.2%
Global Precipitation Measurement 1 4.2%
Goal 1 4.2%
Grant (money) 1 4.2%
Groundwater 1 4.2%
Groundwater pollution 1 4.2%
HIV/AIDS 1 4.2%
Hazardous waste 1 4.2%
Historic preservation 1 4.2%
History 1 4.2%
Honey 1 4.2%
Human subject research 1 4.2%
Hydrogeology 1 4.2%
ISO 13485 1 4.2%
Incoterms 1 4.2%
Industry 1 4.2%
Infection 1 4.2%
Institutional review board 1 4.2%
Insurance 1 4.2%
Investment 1 4.2%
Laboratory 1 4.2%
Laboratory information management system 1 4.2%
Lake Okeechobee 1 4.2%
Land management 1 4.2%
Lanzarote 1 4.2%
Lawsuit 1 4.2%
Leptospermum scoparium 1 4.2%
Liquid 1 4.2%
Livestock 1 4.2%
Logging 1 4.2%
Logistics 1 4.2%
Lung 1 4.2%
Manufacturing 1 4.2%
Market (economics) 1 4.2%
Marketing 1 4.2%
Materials 1 4.2%
Measurement uncertainty 1 4.2%
Meat 1 4.2%
Medical device 1 4.2%
Medical diagnosis 1 4.2%
Medical test 1 4.2%
Medicine 1 4.2%
Merino 1 4.2%
Mire 1 4.2%
Nanomaterials 1 4.2%
National Environmental Policy Act 1 4.2%
National World War I Memorial (Washington, D.C.) 1 4.2%
Nationally Determined Contributions 1 4.2%
Natural gas 1 4.2%
Natural resource management 1 4.2%
Natural resources 1 4.2%
Nature conservation 1 4.2%
Net present value 1 4.2%
New product development 1 4.2%
Nonprofit organization 1 4.2%
Novel food 1 4.2%
Old-growth forest 1 4.2%
Omega-3 fatty acid 1 4.2%
Palm oil 1 4.2%
Particle aggregation 1 4.2%
Particulates 1 4.2%
Paul Gosar 1 4.2%
Perna canaliculus 1 4.2%
Phagocytosis 1 4.2%
Plantation 1 4.2%
Point of care 1 4.2%
Pollution 1 4.2%
Polymerase chain reaction 1 4.2%
Pressure 1 4.2%
Productivity 1 4.2%
Protected area 1 4.2%
Quality management 1 4.2%
Quality management system 1 4.2%
Radical (chemistry) 1 4.2%
Red meat 1 4.2%
Redox 1 4.2%
Reforestation 1 4.2%
Relative density 1 4.2%
Remote sensing 1 4.2%
Restoration of the Everglades 1 4.2%
Scientific control 1 4.2%
Scientific method 1 4.2%
Selective breeding 1 4.2%
Shipbuilding 1 4.2%
Societal collapse 1 4.2%
Software development 1 4.2%
Soil 1 4.2%
Soil contamination 1 4.2%
Solution 1 4.2%
Spatial analysis 1 4.2%
Stafford Disaster Relief and Emergency Assistance Act 1 4.2%
Standard score 1 4.2%
Standardization 1 4.2%
States and union territories of India 1 4.2%
Sunset provision 1 4.2%
Surveillance 1 4.2%
Sustainable development 1 4.2%
Systems ecology 1 4.2%
Tax refund 1 4.2%
Tenerife 1 4.2%
Tongass National Forest 1 4.2%
Tree 1 4.2%
Value chain 1 4.2%
Van der Waals force 1 4.2%
Vapi 1 4.2%
Vapor pressure 1 4.2%
Venison 1 4.2%
Verification and validation 1 4.2%
Vulnerability (computing) 1 4.2%
Warehouse 1 4.2%
Waste 1 4.2%
Waste management 1 4.2%
Water footprint 1 4.2%
Water table 1 4.2%
Welfare 1 4.2%
Well 1 4.2%
Wildland–urban interface 1 4.2%
Wine 1 4.2%
Wool 1 4.2%

2018

abs rel
Human activities 22 78.6%
Agriculture 15 53.6%
Natural environment 15 53.6%
Sustainability 15 53.6%
Nature 14 50.0%
Economy 13 46.4%
Climate change mitigation 12 42.9%
Water 12 42.9%
Renewable energy 11 39.3%
Technology 11 39.3%
Risk 10 35.7%
Efficient energy use 9 32.1%
Greenhouse gas 9 32.1%
Innovation 9 32.1%
Waste 9 32.1%
Economic growth 8 28.6%
Employment 8 28.6%
Food 8 28.6%
Health 8 28.6%
Research 8 28.6%
Air pollution 7 25.0%
Carbon dioxide 7 25.0%
Climate change 7 25.0%
Energy development 7 25.0%
Infrastructure 7 25.0%
Science 7 25.0%
Transport 7 25.0%
Low-carbon economy 6 21.4%
Policy 6 21.4%
Risk management 6 21.4%
Wind power 6 21.4%
Biodiversity 5 17.9%
Climate resilience 5 17.9%
Ecology 5 17.9%
Economics 5 17.9%
Environmental science 5 17.9%
Eutrophication 5 17.9%
Food security 5 17.9%
Global warming 5 17.9%
Livestock 5 17.9%
Recycling 5 17.9%
United Nations Framework Convention on Climate Change 5 17.9%
Automation 4 14.3%
Business 4 14.3%
Construction 4 14.3%
Earth sciences 4 14.3%
Ecosystem 4 14.3%
Ecosystem services 4 14.3%
Education 4 14.3%
Emissions trading 4 14.3%
Environmental technology 4 14.3%
Finance 4 14.3%
Flood 4 14.3%
Goal 4 14.3%
Governance 4 14.3%
Human impact on the environment 4 14.3%
Insurance 4 14.3%
Irrigation 4 14.3%
Manufacturing 4 14.3%
Natural gas 4 14.3%
Natural resource 4 14.3%
Paris Agreement 4 14.3%
Photovoltaics 4 14.3%
Pollution 4 14.3%
Soil 4 14.3%
Water quality 4 14.3%
Water resources 4 14.3%
Audit 3 10.7%
Biofuel 3 10.7%
Carbon tax 3 10.7%
Cattle 3 10.7%
Circular economy 3 10.7%
Climate change adaptation 3 10.7%
Coal 3 10.7%
Crop rotation 3 10.7%
Ecological resilience 3 10.7%
Emergency management 3 10.7%
Engineering 3 10.7%
Evaluation 3 10.7%
Firefighter 3 10.7%
Food and drink 3 10.7%
Fuel 3 10.7%
Green building 3 10.7%
Intensive farming 3 10.7%
Kyoto Protocol 3 10.7%
Logistics 3 10.7%
Management 3 10.7%
Market (economics) 3 10.7%
Marketing 3 10.7%
Meat 3 10.7%
Methane 3 10.7%
Milk 3 10.7%
Poverty 3 10.7%
Procurement 3 10.7%
Public housing 3 10.7%
Risk assessment 3 10.7%
Safety 3 10.7%
Sanitation 3 10.7%
Strategic planning 3 10.7%
Sustainable development 3 10.7%
Sustainable energy 3 10.7%
Tax 3 10.7%
Wastewater 3 10.7%
Water footprint 3 10.7%
Water pollution 3 10.7%
Aluminium 2 7.1%
Analytics 2 7.1%
Animal husbandry 2 7.1%
Aquatic ecosystem 2 7.1%
Artificial objects 2 7.1%
Biomass 2 7.1%
Biotechnology 2 7.1%
Carbon price 2 7.1%
Chemistry 2 7.1%
Climate Finance 2 7.1%
Competition (companies) 2 7.1%
Comprehensive planning 2 7.1%
Culture 2 7.1%
Dairy cattle 2 7.1%
Database 2 7.1%
Deforestation 2 7.1%
Drainage basin 2 7.1%
Drought 2 7.1%
Economic development 2 7.1%
Effects of global warming 2 7.1%
Electric vehicle 2 7.1%
Electrical grid 2 7.1%
Emission intensity 2 7.1%
Energy 2 7.1%
Engineer 2 7.1%
Environment 2 7.1%
Environmental impact assessment 2 7.1%
Environmental issues 2 7.1%
Environmental social science 2 7.1%
Erosion 2 7.1%
European Union Emission Trading Scheme 2 7.1%
Externality 2 7.1%
Farm 2 7.1%
Fertilizer 2 7.1%
Fresh water 2 7.1%
Glyphosate 2 7.1%
Green infrastructure 2 7.1%
Greenhouse gas emissions 2 7.1%
Greenhouse gas inventory 2 7.1%
Groundwater 2 7.1%
Habitat 2 7.1%
Hazard 2 7.1%
Herbicide 2 7.1%
Hydrology 2 7.1%
Investment 2 7.1%
Landscape 2 7.1%
Manure 2 7.1%
Mechanical engineering 2 7.1%
Natural resource management 2 7.1%
Nuclear power 2 7.1%
Occupational safety and health 2 7.1%
Offshore wind power 2 7.1%
Organic farming 2 7.1%
Pesticide 2 7.1%
Physical sciences 2 7.1%
Productivity 2 7.1%
Protected area 2 7.1%
Public health 2 7.1%
Public–private partnership 2 7.1%
Quality assurance 2 7.1%
Rice 2 7.1%
Road 2 7.1%
Robot 2 7.1%
Sanitary sewer 2 7.1%
Sea 2 7.1%
Sewage treatment 2 7.1%
Ship 2 7.1%
Situation awareness 2 7.1%
Soybean 2 7.1%
Statistics 2 7.1%
Steel 2 7.1%
Stormwater 2 7.1%
Subsidy 2 7.1%
Supply chain 2 7.1%
Surface runoff 2 7.1%
Sustainable Development Goals 2 7.1%
Tourism 2 7.1%
Training 2 7.1%
Unmanned aerial vehicle 2 7.1%
Urban agriculture 2 7.1%
Warehouse 2 7.1%
Waste management 2 7.1%
Water scarcity 2 7.1%
Water supply 2 7.1%
Wheat 2 7.1%
Academic degree 1 3.6%
Acid 1 3.6%
Adherence (medicine) 1 3.6%
Administration of federal assistance in the United States 1 3.6%
Advertising 1 3.6%
Africa 1 3.6%
African swine fever virus 1 3.6%
Ageing 1 3.6%
Agencies of the United States government 1 3.6%
Algae 1 3.6%
Alkalinity 1 3.6%
Alternative fuel 1 3.6%
Ammonia 1 3.6%
Anaerobic digestion 1 3.6%
Anti-fouling paint 1 3.6%
Apprenticeship 1 3.6%
Aquaculture 1 3.6%
Aquifer 1 3.6%
Arable land 1 3.6%
Archaea 1 3.6%
Archivist 1 3.6%
Artificial intelligence 1 3.6%
Artificial materials 1 3.6%
Atlantic Ocean 1 3.6%
Atmosphere of Earth 1 3.6%
Audio engineer 1 3.6%
Autonomous car 1 3.6%
Bacillus thuringiensis 1 3.6%
Bacteria 1 3.6%
Bank 1 3.6%
Barium 1 3.6%
Beef 1 3.6%
Biochar 1 3.6%
Biochemical oxygen demand 1 3.6%
Biocide 1 3.6%
Bioenergy 1 3.6%
Biofilm 1 3.6%
Biofouling 1 3.6%
Biogas 1 3.6%
Bioreactor 1 3.6%
Biosolids 1 3.6%
Bivalvia 1 3.6%
Black carbon 1 3.6%
Blended finance 1 3.6%
Blue economy 1 3.6%
Bolloré Bluecar 1 3.6%
Bookkeeping 1 3.6%
Buffer strip 1 3.6%
Bullying 1 3.6%
Business process 1 3.6%
Cadmium 1 3.6%
Calcium 1 3.6%
Calcium carbonate 1 3.6%
Calcium hydroxide 1 3.6%
Calf 1 3.6%
Call centre 1 3.6%
Capital (economics) 1 3.6%
Car 1 3.6%
Carbon 1 3.6%
Carbon budget 1 3.6%
Carbon capture and storage 1 3.6%
Carbon credit 1 3.6%
Carbon emission trading 1 3.6%
Carbon footprint 1 3.6%
Carbon neutrality 1 3.6%
Carbon offset 1 3.6%
Cattle feeding 1 3.6%
Cement 1 3.6%
Census 1 3.6%
Chemical compounds 1 3.6%
Chemical elements 1 3.6%
Chemical substances 1 3.6%
Chief executive officer 1 3.6%
Chief information officer 1 3.6%
Chloride 1 3.6%
Chromium 1 3.6%
Chronic toxicity 1 3.6%
City 1 3.6%
Civil engineering 1 3.6%
Clean Development Mechanism 1 3.6%
Climate 1 3.6%
Climate change scenario 1 3.6%
Closed-circuit television 1 3.6%
Coast 1 3.6%
Coastal management 1 3.6%
Cogeneration 1 3.6%
Combustion 1 3.6%
Common Fisheries Policy 1 3.6%
Competition 1 3.6%
Compressed natural gas 1 3.6%
Computer security 1 3.6%
Concentrated animal feeding operation 1 3.6%
Concrete 1 3.6%
Conservation (ethic) 1 3.6%
Conservation Reserve Program 1 3.6%
Consultant 1 3.6%
Contract 1 3.6%
Copper 1 3.6%
Coprecipitation 1 3.6%
Copyright 1 3.6%
Coral reef 1 3.6%
Coronavirus disease 2019 1 3.6%
Corrosion 1 3.6%
Cost–benefit analysis 1 3.6%
Cotton 1 3.6%
Creativity 1 3.6%
Credit 1 3.6%
Crime 1 3.6%
Crop insurance 1 3.6%
Cultural heritage 1 3.6%
DDT 1 3.6%
Dairy 1 3.6%
Data quality 1 3.6%
Datacasting 1 3.6%
Degasification 1 3.6%
Derivative (finance) 1 3.6%
Desalination 1 3.6%
Design 1 3.6%
Developing country 1 3.6%
Development aid 1 3.6%
Differential scanning calorimetry 1 3.6%
Direct reduced iron 1 3.6%
Disaster 1 3.6%
Disaster response 1 3.6%
Distributed control system 1 3.6%
Distributed generation 1 3.6%
Distribution (marketing) 1 3.6%
District heating 1 3.6%
Ditch 1 3.6%
Drafter 1 3.6%
Drainage 1 3.6%
Drill 1 3.6%
Drinking water 1 3.6%
Driving 1 3.6%
Drug overdose 1 3.6%
Dust Bowl 1 3.6%
Earth 1 3.6%
East Coast fever 1 3.6%
Economy and the environment 1 3.6%
Ecotourism 1 3.6%
Eildon Dam 1 3.6%
Electric arc furnace 1 3.6%
Electric power transmission 1 3.6%
Electrical engineering 1 3.6%
Electricity generation 1 3.6%
Electronics 1 3.6%
Emergency 1 3.6%
Emergency communication system 1 3.6%
Emission inventory 1 3.6%
Emission standard 1 3.6%
Employee retention 1 3.6%
Emulsion 1 3.6%
Energy conservation 1 3.6%
Energy economics 1 3.6%
Energy industry 1 3.6%
Energy storage 1 3.6%
Engine 1 3.6%
Engineering design process 1 3.6%
Engineering technician 1 3.6%
Enteric fermentation 1 3.6%
Entrepreneurship 1 3.6%
Environmental degradation 1 3.6%
Environmental engineering 1 3.6%
Environmental protection 1 3.6%
Environmental remediation 1 3.6%
Environmental, social and corporate governance 1 3.6%
Experiment 1 3.6%
Expert 1 3.6%
Expo 2015 1 3.6%
Extreme weather 1 3.6%
Farmer 1 3.6%
Farmers' suicides in India 1 3.6%
Financial adviser 1 3.6%
Financial analyst 1 3.6%
Fire safety 1 3.6%
Fire sprinkler system 1 3.6%
Fish farming 1 3.6%
Fishing 1 3.6%
Flexible Mechanisms 1 3.6%
Flood insurance 1 3.6%
Fly ash 1 3.6%
Food Quality Protection Act 1 3.6%
Food for Peace 1 3.6%
Food industry 1 3.6%
Food safety 1 3.6%
Forest 1 3.6%
Forestry 1 3.6%
Fossil fuel 1 3.6%
Fuel efficiency 1 3.6%
Fuel oil 1 3.6%
Genetic engineering 1 3.6%
Genetically modified crops 1 3.6%
Genetically modified food 1 3.6%
Geochemistry 1 3.6%
Geothermal energy 1 3.6%
Global change 1 3.6%
Global warming potential 1 3.6%
Globalization 1 3.6%
Goat 1 3.6%
Goulburn River 1 3.6%
Government 1 3.6%
Grant (money) 1 3.6%
Green Revolution 1 3.6%
Greenhouse effect 1 3.6%
Gross domestic product 1 3.6%
Groundwater recharge 1 3.6%
HVAC 1 3.6%
Habitat destruction 1 3.6%
Health professional 1 3.6%
Heat sink 1 3.6%
Heavy metals 1 3.6%
Highway 1 3.6%
Home insurance 1 3.6%
Human factors and ergonomics 1 3.6%
Human migration 1 3.6%
Human resource management 1 3.6%
Human resources 1 3.6%
Hurricane Harvey 1 3.6%
Hurricane Irma 1 3.6%
Hurricane Maria 1 3.6%
Hydraulic engineering 1 3.6%
Hydroelectricity 1 3.6%
Hydrogen 1 3.6%
Hydrology and urban planning 1 3.6%
Hydroxide 1 3.6%
Hydroxides 1 3.6%
Hypoxia (environmental) 1 3.6%
ISO 14000 1 3.6%
ISO 9000 1 3.6%
ISO/IEC 17025 1 3.6%
Immigration 1 3.6%
Immune system 1 3.6%
Implementation 1 3.6%
Incineration 1 3.6%
Individual retirement account 1 3.6%
Industrial control system 1 3.6%
Infection 1 3.6%
Infectious bursal disease 1 3.6%
Information technology 1 3.6%
Inspection 1 3.6%
Institutional review board 1 3.6%
Instrumentation 1 3.6%
Integrated coastal zone management 1 3.6%
Intended Nationally Determined Contributions 1 3.6%
Interest 1 3.6%
Internet of things 1 3.6%
Interoperability 1 3.6%
Introduced species 1 3.6%
Invasive species 1 3.6%
Inventory 1 3.6%
Investor 1 3.6%
Iron 1 3.6%
Joint Entrance Examination – Advanced 1 3.6%
Knowledge economy 1 3.6%
Knowledge management 1 3.6%
LTE (telecommunication) 1 3.6%
Laboratory 1 3.6%
Laboratory information management system 1 3.6%
Lake 1 3.6%
Land management 1 3.6%
Land use, land-use change, and forestry 1 3.6%
Lead 1 3.6%
Leadership 1 3.6%
Legume 1 3.6%
Limestone 1 3.6%
Liquefied natural gas 1 3.6%
Liquid dielectrics 1 3.6%
Llano Estacado 1 3.6%
Loan 1 3.6%
Loan waiver 1 3.6%
Local food 1 3.6%
Low-carbon power 1 3.6%
Lubricants 1 3.6%
Machine 1 3.6%
Machinist 1 3.6%
Magnesium 1 3.6%
Maintenance (technical) 1 3.6%
Maize 1 3.6%
Malnutrition 1 3.6%
Management consulting 1 3.6%
Manganese 1 3.6%
Manufacturing engineering 1 3.6%
Marine propulsion 1 3.6%
Marine protected area 1 3.6%
Maritime transport 1 3.6%
Market analysis 1 3.6%
Material efficiency 1 3.6%
Material handling 1 3.6%
Materials 1 3.6%
Mathematics 1 3.6%
Medical specialty 1 3.6%
Medicine 1 3.6%
Mediterranean Sea 1 3.6%
Membrane 1 3.6%
Mentorship 1 3.6%
Mercury (element) 1 3.6%
Metal 1 3.6%
Metalworking 1 3.6%
Microalgae 1 3.6%
Microscopy 1 3.6%
Mini-grids 1 3.6%
Mining 1 3.6%
Mire 1 3.6%
Mission critical 1 3.6%
Musculoskeletal disorder 1 3.6%
Naloxone 1 3.6%
Nannochloropsis 1 3.6%
Nanoparticle 1 3.6%
National Flood Insurance Program 1 3.6%
National security 1 3.6%
Natural capital 1 3.6%
Natural hazard 1 3.6%
Natural materials 1 3.6%
Natural resources 1 3.6%
Neutralization (chemistry) 1 3.6%
Nickel 1 3.6%
Nitrogen 1 3.6%
No-till farming 1 3.6%
Noise 1 3.6%
Nondestructive testing 1 3.6%
Nonpoint source pollution 1 3.6%
Northern Powerhouse Rail 1 3.6%
Nuclear decommissioning 1 3.6%
Nuclear proliferation 1 3.6%
Nuclear weapon 1 3.6%
Numerical control 1 3.6%
Nutrient pollution 1 3.6%
Occupational fatality 1 3.6%
Occupational hygiene 1 3.6%
Occupational injury 1 3.6%
Ocean 1 3.6%
Ocean acidification 1 3.6%
Oceanography 1 3.6%
Offshore drilling 1 3.6%
Ogallala Aquifer 1 3.6%
Organization 1 3.6%
Organization development 1 3.6%
Ounce 1 3.6%
Overexploitation 1 3.6%
Oxidizing agents 1 3.6%
Oxygen 1 3.6%
Oyster 1 3.6%
PH 1 3.6%
Packaging and labeling 1 3.6%
Paper 1 3.6%
Particulates 1 3.6%
Pastoralism 1 3.6%
Photobioreactor 1 3.6%
Photovoltaic system 1 3.6%
Physical geography 1 3.6%
Physician 1 3.6%
Pipe (fluid conveyance) 1 3.6%
Plant 1 3.6%
Plant breeding 1 3.6%
Plastic 1 3.6%
Plastic recycling 1 3.6%
Plough 1 3.6%
Politics of climate change 1 3.6%
Port 1 3.6%
Pound (mass) 1 3.6%
Poverty reduction 1 3.6%
Power electronics 1 3.6%
Prairie 1 3.6%
Precipitation (chemistry) 1 3.6%
Preventive healthcare 1 3.6%
Primary sector of the economy 1 3.6%
Prison 1 3.6%
Problem solving 1 3.6%
Process modeling 1 3.6%
Product lifecycle 1 3.6%
Programmer 1 3.6%
Progress 1 3.6%
Project 25 1 3.6%
Project management 1 3.6%
Psychological resilience 1 3.6%
Public relations 1 3.6%
Public transport 1 3.6%
Purchasing 1 3.6%
Quality management 1 3.6%
Radioactive waste 1 3.6%
Radium 1 3.6%
Rail transport 1 3.6%
Raw material 1 3.6%
Real estate appraisal 1 3.6%
Real estate broker 1 3.6%
Receptionist 1 3.6%
Reclaimed water 1 3.6%
Recruitment 1 3.6%
Redox 1 3.6%
Reducing emissions from deforestation and forest degradation 1 3.6%
Refrigerants 1 3.6%
Refrigeration 1 3.6%
Regulatory compliance 1 3.6%
Reinsurance 1 3.6%
Reliability engineering 1 3.6%
Remotely operated underwater vehicle 1 3.6%
Renewable fuels 1 3.6%
Residence time 1 3.6%
Resource 1 3.6%
Reuse 1 3.6%
Revised National Tuberculosis Control Program 1 3.6%
River 1 3.6%
Road traffic safety 1 3.6%
Robotics 1 3.6%
SCADA 1 3.6%
Sales 1 3.6%
Salinity 1 3.6%
Sanitary sewer overflow 1 3.6%
Scanning electron microscope 1 3.6%
Scenedesmus 1 3.6%
Scientific method 1 3.6%
Scrap 1 3.6%
Screw 1 3.6%
Sea level rise 1 3.6%
Seafood 1 3.6%
Seagrass 1 3.6%
Seat belt 1 3.6%
Security (finance) 1 3.6%
Security alarm 1 3.6%
Sediment 1 3.6%
Sewage sludge 1 3.6%
Shipbuilding 1 3.6%
Silicon 1 3.6%
Simulation 1 3.6%
Six Sigma 1 3.6%
Smart city 1 3.6%
Smart grid 1 3.6%
Social cognitive theory 1 3.6%
Social marketing 1 3.6%
Sodium 1 3.6%
Sodium hydroxide 1 3.6%
Soil fertility 1 3.6%
Solar energy 1 3.6%
Solar power 1 3.6%
Solubility 1 3.6%
Solvents 1 3.6%
Specification (technical standard) 1 3.6%
Spinning (textiles) 1 3.6%
Stainless steel 1 3.6%
Steelmaking 1 3.6%
Stream 1 3.6%
Streamflow 1 3.6%
Strontium 1 3.6%
Subsea (technology) 1 3.6%
Sulfide 1 3.6%
Surveillance 1 3.6%
Sustainability and environmental management 1 3.6%
Sustainable city 1 3.6%
Sustainable tourism 1 3.6%
Sustainable urban planning 1 3.6%
Synergy 1 3.6%
System 1 3.6%
Systems ecology 1 3.6%
Tax refund 1 3.6%
Teacher 1 3.6%
Textile 1 3.6%
Tillage 1 3.6%
Time series 1 3.6%
Ton 1 3.6%
Tool and die maker 1 3.6%
Toxicity 1 3.6%
Traceability 1 3.6%
Trade in services statistics 1 3.6%
Traffic collision 1 3.6%
Transparent materials 1 3.6%
Treaty 1 3.6%
Tropical cyclone 1 3.6%
Tuberculosis 1 3.6%
Uncertainty 1 3.6%
Underwriting 1 3.6%
United Nations Climate Change conference 1 3.6%
United States emission standards 1 3.6%
Urban ecology 1 3.6%
Urban green space 1 3.6%
Urban open space 1 3.6%
Urban planning 1 3.6%
Vaccine 1 3.6%
Value chain 1 3.6%
Value of life 1 3.6%
Value-added tax 1 3.6%
Valve 1 3.6%
Vegetable 1 3.6%
Vehicle-to-grid 1 3.6%
Venture capital 1 3.6%
Violence 1 3.6%
Virus 1 3.6%
Vocational education 1 3.6%
Wastewater treatment 1 3.6%
Water and politics 1 3.6%
Water and the environment 1 3.6%
Water cycle management 1 3.6%
Water management 1 3.6%
Water purification 1 3.6%
Water resource management 1 3.6%
Water supply network 1 3.6%
Water table 1 3.6%
Wealth 1 3.6%
Weed 1 3.6%
Welding 1 3.6%
Welfare 1 3.6%
Wetland 1 3.6%
Wildfire 1 3.6%
Wildfire suppression 1 3.6%
Workington 1 3.6%
Workplace violence 1 3.6%
World energy consumption 1 3.6%
World energy supply and consumption 1 3.6%
World population 1 3.6%
World's fair 1 3.6%
X-ray crystallography 1 3.6%
X-ray fluorescence 1 3.6%
Yarn 1 3.6%
Zeolite 1 3.6%
Zinc 1 3.6%

2019

abs rel
Human activities 20 58.8%
Nature 18 52.9%
Sustainability 15 44.1%
Risk 14 41.2%
Agriculture 13 38.2%
Natural environment 11 32.4%
Food 10 29.4%
Air pollution 9 26.5%
Economy 9 26.5%
Global warming 8 23.5%
Health 8 23.5%
Innovation 8 23.5%
Pollution 8 23.5%
Technology 8 23.5%
Waste 8 23.5%
Chemistry 7 20.6%
Electric vehicle 7 20.6%
Greenhouse gas 7 20.6%
Photovoltaics 7 20.6%
Polylactic acid 7 20.6%
Recycling 7 20.6%
Transport 7 20.6%
Unmanned aerial vehicle 7 20.6%
Water 7 20.6%
Artificial intelligence 6 17.6%
Ecosystem 6 17.6%
Physical sciences 6 17.6%
Renewable energy 6 17.6%
Robot 6 17.6%
Safety 6 17.6%
Sustainable Development Goals 6 17.6%
Wildfire 6 17.6%
Biodiversity 5 14.7%
Biomass 5 14.7%
Cancer 5 14.7%
Clean Water Act 5 14.7%
Construction 5 14.7%
Disease 5 14.7%
Hazard 5 14.7%
Human impact on the environment 5 14.7%
Materials 5 14.7%
Poverty 5 14.7%
Solar energy 5 14.7%
Acute myeloid leukemia 4 11.8%
Algae fuel 4 11.8%
Artificial objects 4 11.8%
Battery electric vehicle 4 11.8%
Biobank 4 11.8%
Biodegradation 4 11.8%
Bioplastic 4 11.8%
Chemical substances 4 11.8%
Climate change 4 11.8%
Climate change mitigation 4 11.8%
Climate resilience 4 11.8%
Clinical trial 4 11.8%
Cosmic ray 4 11.8%
Earth's magnetic field 4 11.8%
Economic inequality 4 11.8%
Fake news 4 11.8%
Fossil fuel 4 11.8%
Geomagnetic reversal 4 11.8%
Hybrid electric vehicle 4 11.8%
Inspection 4 11.8%
Leukemia 4 11.8%
Low-carbon economy 4 11.8%
MMR vaccine 4 11.8%
Maize 4 11.8%
Medical diagnosis 4 11.8%
Paper cup 4 11.8%
Particulates 4 11.8%
Planetary boundaries 4 11.8%
Plug-in hybrid 4 11.8%
Renewable resource 4 11.8%
Research 4 11.8%
Risk management 4 11.8%
Safe Drinking Water Act 4 11.8%
Science 4 11.8%
Social media 4 11.8%
Solar cell 4 11.8%
Solar cell efficiency 4 11.8%
Superfund 4 11.8%
Toxicity 4 11.8%
Vaccine 4 11.8%
Vehicle 4 11.8%
Water treatment 4 11.8%
Adsorption 3 8.8%
Bacteria 3 8.8%
Bacteriocin 3 8.8%
Banana 3 8.8%
Bioinformatics 3 8.8%
Biology 3 8.8%
Biotechnology 3 8.8%
Brownfield land 3 8.8%
Carbon fiber reinforced polymer 3 8.8%
Catalysis 3 8.8%
Clean Air Act (United States) 3 8.8%
Composite material 3 8.8%
Copolymer 3 8.8%
DNA 3 8.8%
DNA profiling 3 8.8%
DNA sequencing 3 8.8%
Deforestation 3 8.8%
Drinking water 3 8.8%
Drug resistance 3 8.8%
Earth sciences 3 8.8%
Ecological resilience 3 8.8%
Ecology 3 8.8%
Education 3 8.8%
Engineering 3 8.8%
Environmental social science 3 8.8%
Environmental technology 3 8.8%
Epoxy 3 8.8%
Fiber 3 8.8%
Flood 3 8.8%
Food system 3 8.8%
Functional genomics 3 8.8%
Gel 3 8.8%
Gel electrophoresis 3 8.8%
Gene 3 8.8%
Genetic marker 3 8.8%
Genetics 3 8.8%
Genomics 3 8.8%
Heterosis 3 8.8%
Inbred strain 3 8.8%
Inbreeding 3 8.8%
Infrastructure 3 8.8%
Insurance 3 8.8%
Langmuir adsorption model 3 8.8%
Life sciences 3 8.8%
Malnutrition 3 8.8%
Metal–organic framework 3 8.8%
Microsatellite 3 8.8%
Microscope 3 8.8%
Molecular cloning 3 8.8%
Molecular marker 3 8.8%
Musa (genus) 3 8.8%
Nanocomposite 3 8.8%
Nanoparticle 3 8.8%
Occupational safety and health 3 8.8%
Out of autoclave composite manufacturing 3 8.8%
Photocatalysis 3 8.8%
Plant breeding 3 8.8%
Polymer 3 8.8%
Polymerase chain reaction 3 8.8%
Polypropylene 3 8.8%
Primer (molecular biology) 3 8.8%
Probiotic 3 8.8%
Random amplification of polymorphic DNA 3 8.8%
Rheology 3 8.8%
Ripening 3 8.8%
Risk assessment 3 8.8%
Saba banana 3 8.8%
Silicon 3 8.8%
Silicon dioxide 3 8.8%
Subsidy 3 8.8%
Taq polymerase 3 8.8%
Thermoplastic 3 8.8%
Thermoplastic elastomer 3 8.8%
Titanium dioxide 3 8.8%
Viscoelasticity 3 8.8%
Volatile organic compound 3 8.8%
Water quality 3 8.8%
X-ray crystallography 3 8.8%
Zeolite 3 8.8%
Analytics 2 5.9%
Arctic 2 5.9%
Biofuel 2 5.9%
Biosolids 2 5.9%
Business 2 5.9%
Capability approach 2 5.9%
Carbon offset 2 5.9%
Climate change feedback 2 5.9%
Climate change in the Arctic 2 5.9%
Conservation biology 2 5.9%
Developing country 2 5.9%
Disaster risk reduction 2 5.9%
Earthquake 2 5.9%
Economic growth 2 5.9%
Economics 2 5.9%
Ecosystem service 2 5.9%
Efficient energy use 2 5.9%
Employment 2 5.9%
Energy development 2 5.9%
Energy industry 2 5.9%
Environmental degradation 2 5.9%
Environmental issues 2 5.9%
Environmental remediation 2 5.9%
Environmental science 2 5.9%
Evaluation 2 5.9%
Exhaust gas 2 5.9%
Extreme poverty 2 5.9%
Fluorine 2 5.9%
Fluorine-19 nuclear magnetic resonance spectroscopy 2 5.9%
Food security 2 5.9%
Forest 2 5.9%
Fuel 2 5.9%
Goal 2 5.9%
Greenland ice sheet 2 5.9%
Groundwater 2 5.9%
Hazardous waste 2 5.9%
Heating, ventilation, and air conditioning 2 5.9%
Information 2 5.9%
Invasive species 2 5.9%
Management 2 5.9%
Manufacturing 2 5.9%
Mass spectrometry 2 5.9%
Maximum Contaminant Level 2 5.9%
National Priorities List 2 5.9%
Natural disaster 2 5.9%
Natural gas 2 5.9%
Natural resource 2 5.9%
Organofluorine chemistry 2 5.9%
Paris Agreement 2 5.9%
Perfluorooctanesulfonic acid 2 5.9%
Perfluorooctanoic acid 2 5.9%
Personal protective equipment 2 5.9%
Pesticide 2 5.9%
Policy 2 5.9%
Public health 2 5.9%
Regulatory compliance 2 5.9%
Resource Conservation and Recovery Act 2 5.9%
Reuse 2 5.9%
Sanitation 2 5.9%
Scientific method 2 5.9%
Sea ice 2 5.9%
Sewage treatment 2 5.9%
Storm 2 5.9%
Storm drain 2 5.9%
Sustainable development 2 5.9%
Tax 2 5.9%
Thomas Fire 2 5.9%
Tipping points in the climate system 2 5.9%
Toxic Substances Control Act of 1976 2 5.9%
Tropical cyclone 2 5.9%
Underground storage tank 2 5.9%
Urban heat island 2 5.9%
Wastewater treatment 2 5.9%
Water pollution 2 5.9%
Wind 2 5.9%
Wind power 2 5.9%
World energy consumption 2 5.9%
.40 S&W 1 2.9%
5.56×45mm NATO 1 2.9%
9×19mm Parabellum 1 2.9%
Absorption (skin) 1 2.9%
Adaptive optics 1 2.9%
Affordable housing 1 2.9%
Agno River 1 2.9%
Air quality index 1 2.9%
Air quality law 1 2.9%
All-terrain vehicle 1 2.9%
Amazon rainforest 1 2.9%
Ammunition 1 2.9%
Antimicrobial resistance 1 2.9%
Archaeology 1 2.9%
Architect 1 2.9%
Asia 1 2.9%
Atmosphere of Earth 1 2.9%
Atmospheric dispersion modeling 1 2.9%
Audit 1 2.9%
Autonomous robot 1 2.9%
Ballistic gelatin 1 2.9%
Beaufort scale 1 2.9%
Best practice 1 2.9%
Bicycle-sharing system 1 2.9%
Big data 1 2.9%
Biodiversity loss 1 2.9%
Bioindicator 1 2.9%
Biosafety 1 2.9%
Birth weight 1 2.9%
Blank (cartridge) 1 2.9%
Boiler 1 2.9%
Building 1 2.9%
Building code 1 2.9%
Bullet 1 2.9%
Bus 1 2.9%
Camp Fire (2018) 1 2.9%
Carbon budget 1 2.9%
Carbon dioxide 1 2.9%
Carbon emission trading 1 2.9%
Carbon footprint 1 2.9%
Carbon neutrality 1 2.9%
Carbon sequestration 1 2.9%
Carbon tax 1 2.9%
Cardiovascular disease 1 2.9%
Cartridge (firearms) 1 2.9%
Cash crop 1 2.9%
Centerfire ammunition 1 2.9%
Central Asia 1 2.9%
Cereal 1 2.9%
Chromatography 1 2.9%
City 1 2.9%
Claims adjuster 1 2.9%
Clay 1 2.9%
Clean Development Mechanism 1 2.9%
Climate 1 2.9%
Climate change adaptation 1 2.9%
Climate governance 1 2.9%
Combustibility and flammability 1 2.9%
Community solar farm 1 2.9%
Competition 1 2.9%
Compost 1 2.9%
Concentrated animal feeding operation 1 2.9%
Contract 1 2.9%
Copenhagen Accord 1 2.9%
Copyright 1 2.9%
Cost–benefit analysis 1 2.9%
Crane (machine) 1 2.9%
Crystalline silicon 1 2.9%
Cyclone Gita 1 2.9%
DDT 1 2.9%
Dangerous goods 1 2.9%
Database 1 2.9%
Decision-making 1 2.9%
Demand 1 2.9%
Demand response 1 2.9%
Dieldrin 1 2.9%
Diesel engine 1 2.9%
Diesel exhaust 1 2.9%
Diesel fuel 1 2.9%
Disability-adjusted life year 1 2.9%
Disease burden 1 2.9%
Dose (biochemistry) 1 2.9%
Dose–response relationship 1 2.9%
Drought 1 2.9%
Dust 1 2.9%
Economic development 1 2.9%
Economic surplus 1 2.9%
Economics of climate change mitigation 1 2.9%
Economy and the environment 1 2.9%
Ecosystem services 1 2.9%
Effects of global warming 1 2.9%
Electric power distribution 1 2.9%
Electric power transmission 1 2.9%
Electrical conductor 1 2.9%
Electrical grid 1 2.9%
Electricity generation 1 2.9%
Elevator 1 2.9%
Emergency 1 2.9%
Emergency management 1 2.9%
Emission standard 1 2.9%
Emissions trading 1 2.9%
Energy 1 2.9%
Energy poverty 1 2.9%
Energy subsidy 1 2.9%
Energy-dispersive X-ray spectroscopy 1 2.9%
Engine 1 2.9%
Environment 1 2.9%
Environmental health 1 2.9%
Environmental impact assessment 1 2.9%
Environmental justice 1 2.9%
Environmental law 1 2.9%
Eric Garcetti 1 2.9%
Erosion 1 2.9%
European Union Emission Trading Scheme 1 2.9%
Explosion 1 2.9%
Explosive 1 2.9%
Exposure assessment 1 2.9%
External ballistics 1 2.9%
Externality 1 2.9%
Extractor (firearms) 1 2.9%
Fertilizer 1 2.9%
Finance 1 2.9%
Fire 1 2.9%
Fire safety 1 2.9%
Firearm 1 2.9%
Firearms 1 2.9%
Flexible Mechanisms 1 2.9%
Food and drink 1 2.9%
Food desert 1 2.9%
Food loss and waste 1 2.9%
Food systems 1 2.9%
Forecasting 1 2.9%
Forklift 1 2.9%
Fuel oil 1 2.9%
Gas chromatography 1 2.9%
Geotechnical engineering 1 2.9%
Gini coefficient 1 2.9%
Governance 1 2.9%
Green New Deal 1 2.9%
Green building 1 2.9%
Green infrastructure 1 2.9%
Green job 1 2.9%
Greenhouse effect 1 2.9%
Greenhouse gas emissions 1 2.9%
Grid energy storage 1 2.9%
Gross domestic product 1 2.9%
Groundwater pollution 1 2.9%
Gun barrel 1 2.9%
Gunshot residue 1 2.9%
Habitat 1 2.9%
Hail 1 2.9%
Hawaii Route 200 1 2.9%
Heat wave 1 2.9%
Heating degree day 1 2.9%
High voltage 1 2.9%
High-performance liquid chromatography 1 2.9%
Homelessness 1 2.9%
Ice 1 2.9%
Index-based insurance 1 2.9%
Infant mortality 1 2.9%
Insulator (electricity) 1 2.9%
Intended nationally determined contributions 1 2.9%
Intensive farming 1 2.9%
Interest 1 2.9%
International Building Code 1 2.9%
Ionizing radiation 1 2.9%
Island 1 2.9%
Kyoto Protocol 1 2.9%
Lahar 1 2.9%
Land-grant university 1 2.9%
Landfill 1 2.9%
Landfill diversion 1 2.9%
Landslide 1 2.9%
Laser 1 2.9%
Laser-induced breakdown spectroscopy 1 2.9%
Lava 1 2.9%
Lawn 1 2.9%
Legume 1 2.9%
Liability insurance 1 2.9%
Lidar 1 2.9%
Lighting 1 2.9%
Machine 1 2.9%
Maintenance (technical) 1 2.9%
Marine propulsion 1 2.9%
Market (economics) 1 2.9%
Mauna Kea 1 2.9%
Meteorology 1 2.9%
Micronesia 1 2.9%
Milk 1 2.9%
Millet 1 2.9%
Mining 1 2.9%
Modified Mercalli intensity scale 1 2.9%
Morrill Land-Grant Acts 1 2.9%
Mortality rate 1 2.9%
Motorcycle 1 2.9%
Municipal solid waste 1 2.9%
NOx 1 2.9%
National Flood Insurance Program 1 2.9%
National Historic Preservation Act of 1966 1 2.9%
National Incident Management System 1 2.9%
Natural resource management 1 2.9%
Natural resources 1 2.9%
Noise pollution 1 2.9%
Nordic countries 1 2.9%
Nutrient management 1 2.9%
Nutrient pollution 1 2.9%
Observatory 1 2.9%
Offshore wind power 1 2.9%
Oil refinery 1 2.9%
Organic farming 1 2.9%
Organophosphate 1 2.9%
Overhead power line 1 2.9%
Pacific Ocean 1 2.9%
Parts-per notation 1 2.9%
Peak ground acceleration 1 2.9%
Peanut 1 2.9%
Per- and polyfluoroalkyl substances 1 2.9%
Persistent organic pollutant 1 2.9%
Physical geography 1 2.9%
Placard 1 2.9%
Politics of global warming 1 2.9%
Pollution prevention 1 2.9%
Port 1 2.9%
Port of Long Beach 1 2.9%
Portable emissions measurement system 1 2.9%
Potential-induced degradation 1 2.9%
Powder-actuated tool 1 2.9%
Power station 1 2.9%
Precipitation 1 2.9%
Prediction 1 2.9%
Predictive analytics 1 2.9%
Pressure vessel 1 2.9%
Price elasticity of demand 1 2.9%
Productivity 1 2.9%
Projectile weapons 1 2.9%
Projectiles 1 2.9%
Psychological resilience 1 2.9%
Public transport 1 2.9%
Public utility 1 2.9%
Radiation protection 1 2.9%
Rain 1 2.9%
Random sample consensus 1 2.9%
Reclaimed water 1 2.9%
Recloser 1 2.9%
Reducing emissions from deforestation and forest degradation 1 2.9%
Reflective surfaces (climate engineering) 1 2.9%
Reliability engineering 1 2.9%
Requirement 1 2.9%
Resource recovery 1 2.9%
Respirator 1 2.9%
Restoration ecology 1 2.9%
Ricochet 1 2.9%
Rifle 1 2.9%
Robotics 1 2.9%
Rock (geology) 1 2.9%
Rollover 1 2.9%
Rollover protection structure 1 2.9%
Roof 1 2.9%
Sampling (statistics) 1 2.9%
San Fernando Valley 1 2.9%
Sand 1 2.9%
Scale-invariant feature transform 1 2.9%
Scanning electron microscope 1 2.9%
Seat belt 1 2.9%
Sediment 1 2.9%
Seismic magnitude scales 1 2.9%
Self-driving car 1 2.9%
Simulation 1 2.9%
Situation awareness 1 2.9%
Snow 1 2.9%
Social vulnerability 1 2.9%
Socioeconomic status 1 2.9%
Soil 1 2.9%
Soil contamination 1 2.9%
Soil texture 1 2.9%
Solar panel 1 2.9%
Solar power 1 2.9%
Soybean 1 2.9%
Specification (technical standard) 1 2.9%
Stafford Disaster Relief and Emergency Assistance Act 1 2.9%
Standardization 1 2.9%
Staple food 1 2.9%
Steam 1 2.9%
Storm surge 1 2.9%
Stormwater 1 2.9%
Stream 1 2.9%
Submillimeter Array 1 2.9%
Submillimetre astronomy 1 2.9%
Subsistence agriculture 1 2.9%
Supplemental Nutrition Assistance Program 1 2.9%
Surface runoff 1 2.9%
Surveying 1 2.9%
Sustainable city 1 2.9%
Sustainable energy 1 2.9%
Theory of change 1 2.9%
Thin-film solar cell 1 2.9%
Thirty Meter Telescope 1 2.9%
Thirty Meter Telescope protests 1 2.9%
Tools 1 2.9%
Topography 1 2.9%
Toxicology 1 2.9%
Tractor 1 2.9%
Traffic collision 1 2.9%
Training 1 2.9%
Transmission tower 1 2.9%
Treaty 1 2.9%
Tribal colleges and universities 1 2.9%
Truck 1 2.9%
Tsunami 1 2.9%
Turbine 1 2.9%
Types of volcanic eruptions 1 2.9%
Typhoon 1 2.9%
Typhoon Mangkhut 1 2.9%
United Nations Framework Convention on Climate Change 1 2.9%
United States farm bill 1 2.9%
Urban agriculture 1 2.9%
Utility pole 1 2.9%
Validity (statistics) 1 2.9%
Valuation (finance) 1 2.9%
Value chain 1 2.9%
Volcanic ash 1 2.9%
Volcano 1 2.9%
Vulnerability 1 2.9%
Wastewater 1 2.9%
Water footprint 1 2.9%
Water heating 1 2.9%
Water scarcity 1 2.9%
Watt 1 2.9%
Wealth 1 2.9%
Weapons 1 2.9%
Well 1 2.9%
Wheat 1 2.9%
Wind turbine 1 2.9%
Winter storm 1 2.9%
Witch Fire 1 2.9%
Woolsey Fire 1 2.9%
Worker Protection Standard 1 2.9%
Workforce development 1 2.9%
Zero-emissions vehicle 1 2.9%
Zero-energy building 1 2.9%

2020

abs rel
Human activities 29 78.4%
Natural environment 23 62.2%
Sustainability 22 59.5%
Agriculture 16 43.2%
Nature 16 43.2%
Greenhouse gas 15 40.5%
Water 15 40.5%
Economy 14 37.8%
Biodiversity 13 35.1%
Food 13 35.1%
Climate change mitigation 12 32.4%
Risk 12 32.4%
Technology 12 32.4%
Health 11 29.7%
Food security 10 27.0%
Low-carbon economy 10 27.0%
Air pollution 9 24.3%
Research 9 24.3%
Waste 9 24.3%
Carbon dioxide 8 21.6%
Climate change 8 21.6%
Climate resilience 8 21.6%
Conservation biology 8 21.6%
Economic growth 8 21.6%
Environmental social science 8 21.6%
Global warming 8 21.6%
Poverty 8 21.6%
Renewable energy 8 21.6%
Appropriations bill (United States) 7 18.9%
Earth sciences 7 18.9%
Ecology 7 18.9%
Ecosystem 7 18.9%
Environmental degradation 7 18.9%
Fertilizer 7 18.9%
Livestock 7 18.9%
Paris Agreement 7 18.9%
Pollution 7 18.9%
Soil 7 18.9%
Climate change adaptation 6 16.2%
Environmental science 6 16.2%
Human impact on the environment 6 16.2%
Invasive species 6 16.2%
Plant breeding 6 16.2%
Sustainable Development Goals 6 16.2%
Sustainable development 6 16.2%
Biomass 5 13.5%
Carbon sequestration 5 13.5%
Climate 5 13.5%
Coral reef 5 13.5%
Drought 5 13.5%
Effects of climate change 5 13.5%
Employment 5 13.5%
Environment 5 13.5%
Environmental technology 5 13.5%
Governance 5 13.5%
Innovation 5 13.5%
Natural resource 5 13.5%
Natural resources 5 13.5%
Resource 5 13.5%
Transport 5 13.5%
Water pollution 5 13.5%
Water resource management 5 13.5%
Water resources 5 13.5%
Wetland 5 13.5%
Wildfire 5 13.5%
Antimicrobial resistance 4 10.8%
Boll weevil 4 10.8%
Chronic wasting disease 4 10.8%
Circular economy 4 10.8%
Citrus greening disease 4 10.8%
Citrus production 4 10.8%
Developing country 4 10.8%
Disease 4 10.8%
Economics 4 10.8%
Ecosystem service 4 10.8%
Efficient energy use 4 10.8%
Endangered Species Act of 1973 4 10.8%
Flood 4 10.8%
Fresh water 4 10.8%
Groundwater 4 10.8%
Hazard 4 10.8%
Infrastructure 4 10.8%
Life-cycle assessment 4 10.8%
Maize 4 10.8%
Mire 4 10.8%
Nature-based solutions 4 10.8%
Occupational safety and health 4 10.8%
Pesticide 4 10.8%
Productivity 4 10.8%
Reclaimed water 4 10.8%
Recycling 4 10.8%
Representative Concentration Pathway 4 10.8%
Risk assessment 4 10.8%
Sea level rise 4 10.8%
United States farm bill 4 10.8%
Water scarcity 4 10.8%
Wheat 4 10.8%
Biodiversity loss 3 8.1%
Carbon footprint 3 8.1%
Carbon sink 3 8.1%
Climate change and agriculture 3 8.1%
Conservation movement 3 8.1%
Coypu 3 8.1%
Deforestation 3 8.1%
Drinking water 3 8.1%
Ecological resilience 3 8.1%
Economic inequality 3 8.1%
Economics of climate change mitigation 3 8.1%
Economy and the environment 3 8.1%
Emissions budget 3 8.1%
Endangered species 3 8.1%
Energy 3 8.1%
Energy development 3 8.1%
Environmental conservation 3 8.1%
Environmental issues 3 8.1%
Everglades 3 8.1%
Extreme weather 3 8.1%
Firefighting 3 8.1%
Food waste 3 8.1%
Fossil fuel 3 8.1%
General circulation model 3 8.1%
Great Lakes 3 8.1%
Gross domestic product 3 8.1%
Habitat conservation 3 8.1%
Historic Preservation Fund 3 8.1%
Historic preservation 3 8.1%
Inspection 3 8.1%
Labour economics 3 8.1%
Land degradation 3 8.1%
Landfill 3 8.1%
Manufacturing 3 8.1%
Market (economics) 3 8.1%
Meat 3 8.1%
Medical device 3 8.1%
National Environmental Policy Act 3 8.1%
National Invasive Species Act 3 8.1%
National Wild and Scenic Rivers System 3 8.1%
National Wildlife Refuge 3 8.1%
Nature reserve 3 8.1%
Noise 3 8.1%
North American Wetlands Conservation Act 3 8.1%
Office of Inspector General (United States) 3 8.1%
Personal protective equipment 3 8.1%
Pest (organism) 3 8.1%
Photovoltaics 3 8.1%
Physical geography 3 8.1%
Precipitation 3 8.1%
Public transport 3 8.1%
Restoration ecology 3 8.1%
Risk management 3 8.1%
River 3 8.1%
Safety 3 8.1%
Sewage treatment 3 8.1%
Surface runoff 3 8.1%
Tax 3 8.1%
United Nations Framework Convention on Climate Change 3 8.1%
Urbanization 3 8.1%
Waste management 3 8.1%
Water footprint 3 8.1%
Water quality 3 8.1%
Wildfire suppression 3 8.1%
World energy consumption 3 8.1%
Ageing 2 5.4%
Algal bloom 2 5.4%
Animal welfare 2 5.4%
Biodegradation 2 5.4%
Biofuel 2 5.4%
Biotechnology 2 5.4%
Business 2 5.4%
Carbon capture and storage 2 5.4%
Carbon neutrality 2 5.4%
Climate finance 2 5.4%
Combustibility and flammability 2 5.4%
Common Agricultural Policy 2 5.4%
Conservation (ethic) 2 5.4%
Construction 2 5.4%
Decibel 2 5.4%
Demographic transition 2 5.4%
Disaster risk reduction 2 5.4%
Drylands 2 5.4%
Ecosystem services 2 5.4%
Electrification 2 5.4%
Electronic waste 2 5.4%
Emergency management 2 5.4%
Energy conservation 2 5.4%
Environmental governance 2 5.4%
Essential fish habitat 2 5.4%
Evaluation 2 5.4%
Farm 2 5.4%
Food industry 2 5.4%
Food system 2 5.4%
Forest 2 5.4%
Gini coefficient 2 5.4%
Grazing 2 5.4%
Green building 2 5.4%
Greenhouse gas emissions 2 5.4%
Habitat destruction 2 5.4%
Heat 2 5.4%
Heat pump 2 5.4%
Heating, ventilation, and air conditioning 2 5.4%
Hydroelectricity 2 5.4%
Hydrology 2 5.4%
Indirect land use change impacts of biofuels 2 5.4%
Instrumental temperature record 2 5.4%
Irrigation 2 5.4%
Landscape 2 5.4%
Liquid dielectrics 2 5.4%
Materials 2 5.4%
Microplastics 2 5.4%
Natural capital 2 5.4%
Natural gas 2 5.4%
Nature conservation 2 5.4%
Ocean 2 5.4%
Organic farming 2 5.4%
Parking 2 5.4%
Plastic pollution 2 5.4%
Plumbing 2 5.4%
Policy 2 5.4%
Politics 2 5.4%
Polystyrene 2 5.4%
Precision agriculture 2 5.4%
Regulatory compliance 2 5.4%
Reuse 2 5.4%
Sanitation 2 5.4%
Science 2 5.4%
Self-driving car 2 5.4%
Shadow price 2 5.4%
Social exclusion 2 5.4%
Social inequality 2 5.4%
Solar power 2 5.4%
Specification (technical standard) 2 5.4%
Stormwater 2 5.4%
Sustainable Development Goal 6 2 5.4%
Sustainable energy 2 5.4%
Sustainable food system 2 5.4%
System 2 5.4%
System of Integrated Environmental and Economic Accounting 2 5.4%
Toxicity 2 5.4%
Traditional knowledge 2 5.4%
Tropical cyclone 2 5.4%
U.S. state 2 5.4%
United States Code 2 5.4%
Verification and validation 2 5.4%
WASH 2 5.4%
Wastewater treatment 2 5.4%
Water cycle 2 5.4%
Water security 2 5.4%
Wealth 2 5.4%
Zero-energy building 2 5.4%
ALARP 1 2.7%
Accessibility 1 2.7%
Acetylcholinesterase 1 2.7%
Activity centre 1 2.7%
Administrative law judge 1 2.7%
Aerospace manufacturer 1 2.7%
Affordable housing 1 2.7%
Afforestation 1 2.7%
Agricultural biodiversity 1 2.7%
Agricultural pollution 1 2.7%
Aircraft 1 2.7%
Alfalfa 1 2.7%
Ammonia 1 2.7%
Anaerobic digestion 1 2.7%
Animal husbandry 1 2.7%
Animal keeping 1 2.7%
Apprenticeship 1 2.7%
Aquaculture 1 2.7%
Architectural design 1 2.7%
Architecture 1 2.7%
Audiogram 1 2.7%
Automation 1 2.7%
Backup 1 2.7%
Bathroom 1 2.7%
Big data 1 2.7%
Bio-energy with carbon capture and storage 1 2.7%
Bioconcentration 1 2.7%
Biodiesel 1 2.7%
Bioenergy 1 2.7%
Biofuel in the European Union 1 2.7%
Biogas 1 2.7%
Brownfield land 1 2.7%
Budget of the European Union 1 2.7%
Buffer zone 1 2.7%
Building 1 2.7%
Building code 1 2.7%
Building engineering 1 2.7%
Building envelope 1 2.7%
Building insulation 1 2.7%
Building technology 1 2.7%
COVID-19 pandemic 1 2.7%
Calf 1 2.7%
Capacity building 1 2.7%
Capital (economics) 1 2.7%
Car 1 2.7%
Carbon 1 2.7%
Carbon budget 1 2.7%
Carbon dioxide removal 1 2.7%
Carbon offset 1 2.7%
Carbon tax 1 2.7%
Cargo 1 2.7%
Cattle 1 2.7%
Central heating 1 2.7%
Chemistry 1 2.7%
Chromatography 1 2.7%
Citizen science 1 2.7%
Civil engineering 1 2.7%
Clean Air Act (United States) 1 2.7%
Clean Water Act 1 2.7%
Climate forcing 1 2.7%
Climate variability and change 1 2.7%
Clothing 1 2.7%
Coastal management 1 2.7%
Collar (animal) 1 2.7%
Commonwealth (U.S. insular area) 1 2.7%
Community Choice Aggregation 1 2.7%
Commuting 1 2.7%
Concentrated animal feeding operation 1 2.7%
Contaminated land 1 2.7%
Contract 1 2.7%
Contrail 1 2.7%
Coronavirus disease 2019 1 2.7%
Corrosion 1 2.7%
Coupled Model Intercomparison Project 1 2.7%
Crane (machine) 1 2.7%
Crop diversity 1 2.7%
Crop rotation 1 2.7%
Cycling 1 2.7%
Cycling infrastructure 1 2.7%
Cyclone Idai 1 2.7%
Cyclone Leon–Eline 1 2.7%
Dairy cattle 1 2.7%
Dairy farming 1 2.7%
Dam 1 2.7%
Dangerous goods 1 2.7%
Data quality 1 2.7%
Deep foundation 1 2.7%
Dehydration 1 2.7%
Demand 1 2.7%
Diet (nutrition) 1 2.7%
Digital economy 1 2.7%
Digital electronics 1 2.7%
Direct air capture 1 2.7%
Disaster 1 2.7%
Distributed generation 1 2.7%
Domesticated animals 1 2.7%
Drain-waste-vent system 1 2.7%
Drainage basin 1 2.7%
Drill 1 2.7%
Drilling 1 2.7%
Drilling fluid 1 2.7%
Drilling rig 1 2.7%
Drinking straw 1 2.7%
Drowning 1 2.7%
Earth phenomena 1 2.7%
Ecological footprint 1 2.7%
Economic development 1 2.7%
Economic sectors 1 2.7%
Education 1 2.7%
Educational technology 1 2.7%
Effects of global warming 1 2.7%
Electric vehicle 1 2.7%
Electrical conduit 1 2.7%
Electrical grid 1 2.7%
Electricity 1 2.7%
Emergency 1 2.7%
Emission intensity 1 2.7%
Emissions trading 1 2.7%
Employee retention 1 2.7%
Energy demand management 1 2.7%
Energy storage 1 2.7%
Engineering controls 1 2.7%
Enteric fermentation 1 2.7%
Environmental engineering 1 2.7%
Environmental justice 1 2.7%
Environmental protection 1 2.7%
Environmental remediation 1 2.7%
Environmental resource management 1 2.7%
Enzyme inhibitor 1 2.7%
Epidemiology 1 2.7%
Eurocode 3: Design of steel structures 1 2.7%
European Union Emission Trading Scheme 1 2.7%
Exhaust gas 1 2.7%
Exposure assessment 1 2.7%
Farmer 1 2.7%
Farmworker 1 2.7%
Fashion 1 2.7%
Federal Insecticide, Fungicide, and Rodenticide Act 1 2.7%
Feedlot 1 2.7%
Fire 1 2.7%
Fire extinguisher 1 2.7%
Fire safety 1 2.7%
First aid 1 2.7%
Flammability limit 1 2.7%
Floodplain 1 2.7%
Food and drink 1 2.7%
Food policy 1 2.7%
Food prices 1 2.7%
Food safety 1 2.7%
Forestry 1 2.7%
Fossil fuel power station 1 2.7%
Frostbite 1 2.7%
Fuel 1 2.7%
Furlough 1 2.7%
Gas chromatography 1 2.7%
Genetic engineering 1 2.7%
Genetically modified organism 1 2.7%
Geographic information system 1 2.7%
Globalization 1 2.7%
Glove 1 2.7%
Goat 1 2.7%
Good laboratory practice 1 2.7%
Good manufacturing practice 1 2.7%
Greenhouse effect 1 2.7%
Groundwater recharge 1 2.7%
Half-life 1 2.7%
Harassment 1 2.7%
Hard hat 1 2.7%
Hazardous waste 1 2.7%
Health care 1 2.7%
Health effects from noise 1 2.7%
Healthy diet 1 2.7%
Hearing loss 1 2.7%
Hearing protection device 1 2.7%
Heat stroke 1 2.7%
Hexabromocyclododecane 1 2.7%
High-performance liquid chromatography 1 2.7%
Human musculoskeletal system 1 2.7%
Hydrogen 1 2.7%
Hydrogen economy 1 2.7%
Hydroxides 1 2.7%
Hyperthermia 1 2.7%
Hypothermia 1 2.7%
Incentive 1 2.7%
Incineration 1 2.7%
Informal economy 1 2.7%
Inhalation exposure 1 2.7%
Integrated risk information system 1 2.7%
Intensive farming 1 2.7%
Internal audit 1 2.7%
Internet of things 1 2.7%
Interoperability 1 2.7%
Interstate 85 1 2.7%
Kill switch 1 2.7%
Kyoto Protocol 1 2.7%
Laboratory 1 2.7%
Land grabbing 1 2.7%
Land use 1 2.7%
Land use, land-use change, and forestry 1 2.7%
Land-use planning 1 2.7%
Lawn 1 2.7%
Layoff 1 2.7%
Leachate 1 2.7%
Life expectancy 1 2.7%
Lockout–tagout 1 2.7%
Low-carbon power 1 2.7%
Lumber 1 2.7%
Machinery Directive 1 2.7%
Malnutrition 1 2.7%
Management 1 2.7%
Mangrove 1 2.7%
Manure 1 2.7%
Marine debris 1 2.7%
Medication 1 2.7%
Melbourne 1 2.7%
Metadata 1 2.7%
Methane 1 2.7%
Methane emissions 1 2.7%
Microsoft Excel 1 2.7%
Migrant worker 1 2.7%
Milk 1 2.7%
Millennium Development Goals 1 2.7%
Minimum wage 1 2.7%
Mitsubishi SpaceJet 1 2.7%
Multidimensional Poverty Index 1 2.7%
Municipal solid waste 1 2.7%
Musculoskeletal disorder 1 2.7%
Mutagen 1 2.7%
National Priorities List 1 2.7%
Nationally Determined Contributions 1 2.7%
Natural disaster 1 2.7%
Natural resource management 1 2.7%
Nutrient cycle 1 2.7%
Oat 1 2.7%
Obesity 1 2.7%
Offshore wind power 1 2.7%
Organophosphate 1 2.7%
Oromia Region 1 2.7%
Overfishing 1 2.7%
PET bottle recycling 1 2.7%
Packaging and labeling 1 2.7%
Paint 1 2.7%
Park 1 2.7%
Participatory design 1 2.7%
Particulates 1 2.7%
Performance indicator 1 2.7%
Permethrin 1 2.7%
Pesticide regulation in the United States 1 2.7%
Pharmacopoeia 1 2.7%
Pharmacovigilance 1 2.7%
Pharmacy 1 2.7%
Photosynthesis 1 2.7%
Photovoltaic system 1 2.7%
Pipe (fluid conveyance) 1 2.7%
Plantation 1 2.7%
Plastic 1 2.7%
Plug-in hybrid 1 2.7%
Polyethylene terephthalate 1 2.7%
Poverty reduction 1 2.7%
Prefabrication 1 2.7%
Pressure 1 2.7%
Production (economics) 1 2.7%
Protected area 1 2.7%
Psychological stress 1 2.7%
Public housing 1 2.7%
Public sphere 1 2.7%
Pump 1 2.7%
Quality assurance 1 2.7%
Quality management 1 2.7%
Quality management system 1 2.7%
Rain 1 2.7%
Rainscreen 1 2.7%
Reamer 1 2.7%
Recession 1 2.7%
Recruitment 1 2.7%
Refrigerants 1 2.7%
Regulation 1 2.7%
Regulation and licensure in engineering 1 2.7%
Renewable resource 1 2.7%
Research and development 1 2.7%
Reservoir 1 2.7%
Resource Conservation and Recovery Act 1 2.7%
Resource recovery 1 2.7%
Respirator 1 2.7%
Respiratory droplet 1 2.7%
Retail 1 2.7%
Rice 1 2.7%
Road 1 2.7%
Robot 1 2.7%
Rollover protection structure 1 2.7%
Rust 1 2.7%
Safe Drinking Water Act 1 2.7%
Salinity in Australia 1 2.7%
Salt spray test 1 2.7%
Scaffolding 1 2.7%
Scientific method 1 2.7%
Self-employment 1 2.7%
Sensitivity analysis 1 2.7%
Shampoo 1 2.7%
Shared Socioeconomic Pathways 1 2.7%
Shared mobility 1 2.7%
Sheep 1 2.7%
Simulation 1 2.7%
Social vulnerability 1 2.7%
Sound level meter 1 2.7%
Spreadsheet 1 2.7%
Standardization 1 2.7%
Sterilization (microbiology) 1 2.7%
Storm drain 1 2.7%
Stream 1 2.7%
Subsidy 1 2.7%
Superfund 1 2.7%
Supply chain 1 2.7%
Sustainable Development Goal 1 1 2.7%
Sustainable Development Goal 10 1 2.7%
Sustainable Development Goal 13 1 2.7%
Sustainable Development Goal 2 1 2.7%
Sustainable Development Goal 5 1 2.7%
Sustainable agriculture 1 2.7%
Sustainable city 1 2.7%
Sustainable fishery 1 2.7%
Sustainable technologies 1 2.7%
Sustainable transport 1 2.7%
Sustainable urbanism 1 2.7%
Synergy 1 2.7%
Systematic review 1 2.7%
Tesla Cybertruck 1 2.7%
Tesla Model 3 1 2.7%
Tesla Model Y 1 2.7%
Tesla Supercharger 1 2.7%
The Green Deal 1 2.7%
Thermoregulation 1 2.7%
Threshold limit value 1 2.7%
Tourism 1 2.7%
Toxic Substances Control Act of 1976 1 2.7%
Trade 1 2.7%
Trade union 1 2.7%
Traffic 1 2.7%
Training 1 2.7%
Transmission (medicine) 1 2.7%
Transportation demand management 1 2.7%
Trichloroethylene 1 2.7%
Ultraviolet 1 2.7%
Underground storage tank 1 2.7%
Unemployment 1 2.7%
Unexploded ordnance 1 2.7%
Urban agriculture 1 2.7%
Urban design 1 2.7%
Urban planning 1 2.7%
Urban renewal 1 2.7%
Urban sprawl 1 2.7%
Veganism 1 2.7%
Vegetable 1 2.7%
Vehicle Excise Duty 1 2.7%
Vehicle emission standard 1 2.7%
Ventilation (architecture) 1 2.7%
Veterinary medicine 1 2.7%
Volatile organic compound 1 2.7%
Wage 1 2.7%
Wall 1 2.7%
Waste heat 1 2.7%
Wastewater 1 2.7%
Water supply 1 2.7%
Water supply network 1 2.7%
Water treatment 1 2.7%
Waterborne diseases 1 2.7%
Watershed management 1 2.7%
Well 1 2.7%
Wet season 1 2.7%
Wet-bulb temperature 1 2.7%
Wild fisheries 1 2.7%
Wind power 1 2.7%
Wind turbine 1 2.7%
Workforce 1 2.7%
Zero-emissions vehicle 1 2.7%
Zoonosis 1 2.7%

2021

abs rel
Human activities 63 85.1%
Natural environment 50 67.6%
Sustainability 48 64.9%
Climate change 43 58.1%
Economy 40 54.1%
Agriculture 39 52.7%
Nature 39 52.7%
Biodiversity 32 43.2%
Water 31 41.9%
Food 30 40.5%
Greenhouse gas 30 40.5%
Climate resilience 29 39.2%
Innovation 28 37.8%
Sustainable Development Goals 27 36.5%
Waste 27 36.5%
Air pollution 26 35.1%
European Green Deal 26 35.1%
Infrastructure 26 35.1%
Environmental social science 25 33.8%
Ecology 24 32.4%
Governance 24 32.4%
Pollution 24 32.4%
Climate change mitigation 23 31.1%
Efficient energy use 23 31.1%
Renewable energy 23 31.1%
Research 23 31.1%
Health 22 29.7%
Conservation biology 21 28.4%
Ecosystem 21 28.4%
Ecosystem service 21 28.4%
Illegal, unreported and unregulated fishing 21 28.4%
Technology 21 28.4%
Transport 21 28.4%
Ecological resilience 20 27.0%
Livestock 20 27.0%
Marine protected area 20 27.0%
Public transport 20 27.0%
Tax 20 27.0%
Circular economy 19 25.7%
Common Fisheries Policy 19 25.7%
Electric vehicle 19 25.7%
Environmental impact assessment 19 25.7%
Fertilizer 19 25.7%
Forestry 19 25.7%
Hazardous waste 19 25.7%
Regulatory compliance 19 25.7%
Risk 19 25.7%
Sustainable transport 19 25.7%
Accessibility 18 24.3%
Biofuel 18 24.3%
Energy 18 24.3%
Food industry 18 24.3%
Forest 18 24.3%
Fuel 18 24.3%
Greenhouse gas emissions 18 24.3%
Recycling 18 24.3%
Zero-energy building 18 24.3%
Active mobility 17 23.0%
Charging station 17 23.0%
Compressed natural gas 17 23.0%
Emissions trading 17 23.0%
Energy conservation 17 23.0%
Environmental technology 17 23.0%
Green infrastructure 17 23.0%
Incineration 17 23.0%
Natural gas 17 23.0%
Precision agriculture 17 23.0%
Protected area 17 23.0%
Public housing 17 23.0%
Rail transport 17 23.0%
Reclaimed water 17 23.0%
Sustainable fishery 17 23.0%
Urban renewal 17 23.0%
Water resources 17 23.0%
World energy consumption 17 23.0%
Best available technology 16 21.6%
Biosecurity 16 21.6%
Fisheries management 16 21.6%
Fishing 16 21.6%
Irrigation 16 21.6%
Mechanical biological treatment 16 21.6%
Nature conservation 16 21.6%
Restoration ecology 16 21.6%
Sewage treatment 16 21.6%
Surveillance 16 21.6%
Sustainable forest management 16 21.6%
Waste management 16 21.6%
Aquaculture 15 20.3%
Digital transformation 14 18.9%
Environmental science 14 18.9%
Sustainable energy 13 17.6%
Climate change adaptation 12 16.2%
Fuel cell vehicle 12 16.2%
Hazard 11 14.9%
Sustainable development 11 14.9%
Biodegradable waste 10 13.5%
Soil 10 13.5%
Economics of climate change mitigation 9 12.2%
Environment 9 12.2%
Environmental law 9 12.2%
Habitat fragmentation 9 12.2%
Occupational safety and health 9 12.2%
Safety 9 12.2%
Decree 8 10.8%
Exhaust gas 8 10.8%
Pesticide 8 10.8%
Policy 8 10.8%
Risk assessment 8 10.8%
Subsidy 8 10.8%
Wetland 8 10.8%
Artificial intelligence 7 9.5%
Carbon neutrality 7 9.5%
Conservation status 7 9.5%
Food security 7 9.5%
Food system 7 9.5%
Low-carbon economy 7 9.5%
Chemistry 6 8.1%
Competition (economics) 6 8.1%
Construction 6 8.1%
Earth sciences 6 8.1%
Economic growth 6 8.1%
Endangered Species Act of 1973 6 8.1%
Environmental issues 6 8.1%
Flood 6 8.1%
Food and drink 6 8.1%
Machine 6 8.1%
Maintenance (technical) 6 8.1%
Paris Agreement 6 8.1%
Physical geography 6 8.1%
Sustainable agriculture 6 8.1%
Wildfire 6 8.1%
Zero-emissions vehicle 6 8.1%
A-weighting 5 6.8%
Algal bloom 5 6.8%
Animal husbandry 5 6.8%
Biomass 5 6.8%
Biosafety 5 6.8%
CE marking 5 6.8%
Carbon sequestration 5 6.8%
Clean Water Act 5 6.8%
Groundwater 5 6.8%
Human impact on the environment 5 6.8%
Ionizing radiation 5 6.8%
Kill switch 5 6.8%
Measurement 5 6.8%
Mining 5 6.8%
National Wildlife Refuge 5 6.8%
Notified body 5 6.8%
Organic farming 5 6.8%
Particulates 5 6.8%
Plastic 5 6.8%
Poverty 5 6.8%
Requirement 5 6.8%
Risk management 5 6.8%
Sound pressure 5 6.8%
Specification (technical standard) 5 6.8%
Test (assessment) 5 6.8%
Tractor 5 6.8%
Transmission (mechanics) 5 6.8%
U.S. state 5 6.8%
United Nations Framework Convention on Climate Change 5 6.8%
Vehicle 5 6.8%
Best practice 4 5.4%
Biodegradation 4 5.4%
COVID-19 pandemic 4 5.4%
Carbon dioxide 4 5.4%
Coral reef 4 5.4%
Drinking water 4 5.4%
Emergency 4 5.4%
Employment 4 5.4%
Energy Performance Certificate (United Kingdom) 4 5.4%
Environmental conservation 4 5.4%
Environmental degradation 4 5.4%
Inspection 4 5.4%
Invasive species 4 5.4%
Life-cycle assessment 4 5.4%
Natural resources 4 5.4%
Sustainable Development Goal 13 4 5.4%
Sustainable products 4 5.4%
United States Code 4 5.4%
Animal welfare 3 4.1%
Automation 3 4.1%
Biobased economy 3 4.1%
Biodiversity loss 3 4.1%
Bioinformatics 3 4.1%
Biology 3 4.1%
Biotechnology 3 4.1%
Branches of science 3 4.1%
Carbon sink 3 4.1%
Census 3 4.1%
Commonwealth (U.S. insular area) 3 4.1%
Computer security 3 4.1%
Conservation movement 3 4.1%
Crane (machine) 3 4.1%
Ecological footprint 3 4.1%
Effects of climate change 3 4.1%
Emergency management 3 4.1%
Endangered species 3 4.1%
Engineering 3 4.1%
Environmental engineering 3 4.1%
Fire 3 4.1%
Harmful algal bloom 3 4.1%
Law 3 4.1%
Loan 3 4.1%
Manufacturing 3 4.1%
Market (economics) 3 4.1%
Materials 3 4.1%
Meat 3 4.1%
Methane emissions 3 4.1%
Mire 3 4.1%
National Instant Criminal Background Check System 3 4.1%
Nature reserve 3 4.1%
Nitrification 3 4.1%
Organic aquaculture 3 4.1%
Organic certification 3 4.1%
Organic food 3 4.1%
Ozone 3 4.1%
Plastic pollution 3 4.1%
Poverty reduction 3 4.1%
Red wolf 3 4.1%
Resource 3 4.1%
Resource Conservation and Recovery Act 3 4.1%
Retail 3 4.1%
Reuse 3 4.1%
Road 3 4.1%
Safe Drinking Water Act 3 4.1%
Saltwater intrusion 3 4.1%
Sanitation 3 4.1%
Science, technology, engineering, and mathematics 3 4.1%
Societal collapse 3 4.1%
Superfund 3 4.1%
Supply chain 3 4.1%
Survey of Income and Program Participation 3 4.1%
Sustainable Development Goal 17 3 4.1%
Sustainable food system 3 4.1%
Tailings 3 4.1%
Tourism 3 4.1%
Traceability 3 4.1%
Volatile organic compound 3 4.1%
Water pollution 3 4.1%
Water quality 3 4.1%
Water scarcity 3 4.1%
501(c) organization 2 2.7%
Anaerobic digestion 2 2.7%
Animal slaughter 2 2.7%
Aquifer 2 2.7%
Audit 2 2.7%
Bioenergy 2 2.7%
Biogas 2 2.7%
Bioproducts 2 2.7%
Biorefinery 2 2.7%
Brownfield land 2 2.7%
Business 2 2.7%
Car 2 2.7%
Carbon dioxide in Earth's atmosphere 2 2.7%
Carbon tax 2 2.7%
Climate 2 2.7%
Combustibility and flammability 2 2.7%
Confined space 2 2.7%
Contract 2 2.7%
Coypu 2 2.7%
Dangerous goods 2 2.7%
Desalination 2 2.7%
Developing country 2 2.7%
Digitization 2 2.7%
Earth phenomena 2 2.7%
Earthquake 2 2.7%
Earthscope 2 2.7%
Economic development 2 2.7%
Ecotourism 2 2.7%
Environmental policy 2 2.7%
Environmental protection 2 2.7%
Environmental remediation 2 2.7%
Essential fish habitat 2 2.7%
European Union Emission Trading Scheme 2 2.7%
Evaluation 2 2.7%
Federal Advisory Committee Act 2 2.7%
Fire sprinkler system 2 2.7%
Fluorinated gases 2 2.7%
Food policy 2 2.7%
Forklift 2 2.7%
Fraud 2 2.7%
Freedom of Information Act (United States) 2 2.7%
Fresh water 2 2.7%
Fuel cell 2 2.7%
Genetics 2 2.7%
Geographical indications and traditional specialities in the European Union 2 2.7%
Global environmental issues 2 2.7%
Globalization 2 2.7%
Government 2 2.7%
Great Lakes 2 2.7%
Green bank 2 2.7%
Greenhouse 2 2.7%
Habitat 2 2.7%
Habitat conservation 2 2.7%
Historic preservation 2 2.7%
Hoist (device) 2 2.7%
Hydrology 2 2.7%
IPCC Sixth Assessment Report 2 2.7%
Insurance 2 2.7%
Interest 2 2.7%
Land use, land-use change, and forestry 2 2.7%
Landlocked developing countries 2 2.7%
Least developed countries 2 2.7%
License 2 2.7%
Life 2 2.7%
Liquefied natural gas 2 2.7%
Low-emission zone 2 2.7%
Manual on Uniform Traffic Control Devices 2 2.7%
Methane 2 2.7%
Microorganism 2 2.7%
Migratory Bird Treaty Act of 1918 2 2.7%
Mower 2 2.7%
Multistakeholder governance 2 2.7%
NOx 2 2.7%
National Invasive Species Act 2 2.7%
Native Americans in the United States 2 2.7%
Natural capital 2 2.7%
Natural resource 2 2.7%
Nature-based solutions 2 2.7%
Nitrous oxide 2 2.7%
Noise 2 2.7%
North American Wetlands Conservation Act 2 2.7%
Organisms 2 2.7%
Oxide 2 2.7%
Persistent organic pollutant 2 2.7%
Personal protective equipment 2 2.7%
Pest (organism) 2 2.7%
Photovoltaics 2 2.7%
Plant 2 2.7%
Poaching 2 2.7%
Politics of climate change 2 2.7%
Port 2 2.7%
Poverty threshold 2 2.7%
Primary sector of the economy 2 2.7%
Redox 2 2.7%
Remote sensing 2 2.7%
Respiratory disease 2 2.7%
Road traffic safety 2 2.7%
Robotics 2 2.7%
Rulemaking 2 2.7%
Safety data sheet 2 2.7%
Science 2 2.7%
Seismology 2 2.7%
Self-driving car 2 2.7%
ShakeAlert 2 2.7%
Simulation 2 2.7%
Smart city 2 2.7%
Smog 2 2.7%
Sustainability and environmental management 2 2.7%
Sustainable Development Goal 14 2 2.7%
Sustainable Development Goal 15 2 2.7%
Sustainable Development Goal 3 2 2.7%
Sustainable city 2 2.7%
Swachh Bharat Mission 2 2.7%
Synthetic biology 2 2.7%
System 2 2.7%
Threatened species 2 2.7%
Toxicity 2 2.7%
Underground storage tank 2 2.7%
Verification and validation 2 2.7%
Wastewater 2 2.7%
Wastewater treatment 2 2.7%
Water supply network 2 2.7%
Wildlife 2 2.7%
Wildlife corridor 2 2.7%
Working conditions 2 2.7%
Academic degree 1 1.4%
Accreditation 1 1.4%
Acetic acid 1 1.4%
Actuator 1 1.4%
Africa 1 1.4%
Agricultural economics 1 1.4%
Agricultural pollution 1 1.4%
Agroecology 1 1.4%
Air handler 1 1.4%
Algae 1 1.4%
Algorithm 1 1.4%
All-terrain vehicle 1 1.4%
Analytics 1 1.4%
Animal testing 1 1.4%
Anthropization 1 1.4%
Antibiotic 1 1.4%
Antimicrobial 1 1.4%
Antimicrobial resistance 1 1.4%
Applied and interdisciplinary physics 1 1.4%
Apprenticeship 1 1.4%
Appropriations bill (United States) 1 1.4%
Aquatic ecosystem 1 1.4%
Arbor Day 1 1.4%
Asbestos 1 1.4%
Asthma 1 1.4%
Atal Mission for Rejuvenation and Urban Transformation 1 1.4%
Atmosphere of Earth 1 1.4%
Atmospheric dispersion modeling 1 1.4%
Atmospheric reanalysis 1 1.4%
Automatic identification system 1 1.4%
Automation bias 1 1.4%
Autonomy 1 1.4%
Bactrocera dorsalis 1 1.4%
Balanced budget amendment 1 1.4%
Bank 1 1.4%
Barge 1 1.4%
Bill (law) 1 1.4%
Biodegradable plastic 1 1.4%
Biodiesel 1 1.4%
Biodiversity action plan 1 1.4%
Biofuel in the European Union 1 1.4%
Biological pest control 1 1.4%
Biomarker 1 1.4%
Biosensor 1 1.4%
Bipartisanship 1 1.4%
Blood 1 1.4%
Blood lead level 1 1.4%
Boiler 1 1.4%
Borehole 1 1.4%
Budget 1 1.4%
Built environment 1 1.4%
Cabinet (government) 1 1.4%
California Environmental Quality Act 1 1.4%
Capacity building 1 1.4%
Carbon budget 1 1.4%
Carbon cycle 1 1.4%
Carbon fee and dividend 1 1.4%
Carbon price 1 1.4%
Carcinogen 1 1.4%
Cardiovascular disease 1 1.4%
Carrying capacity 1 1.4%
Cattle 1 1.4%
Cell (biology) 1 1.4%
Cell culture 1 1.4%
Central heating 1 1.4%
Cereal 1 1.4%
Certification 1 1.4%
Chemical substance 1 1.4%
Child labour 1 1.4%
Chrysotile 1 1.4%
Clean Air Act (United States) 1 1.4%
Climate change policy of the United States 1 1.4%
Climate governance 1 1.4%
Climate variability and change 1 1.4%
Clinical trial 1 1.4%
Coal 1 1.4%
Coal gasification 1 1.4%
Coal mining 1 1.4%
Coal phase-out 1 1.4%
Coal preparation plant 1 1.4%
Coefficient of determination 1 1.4%
Coke (fuel) 1 1.4%
College 1 1.4%
Colonia (United States) 1 1.4%
Committee 1 1.4%
Common Agricultural Policy 1 1.4%
Compact of Free Association 1 1.4%
Competition (companies) 1 1.4%
Computer simulation 1 1.4%
Conceptual model 1 1.4%
Confidentiality 1 1.4%
Conformance testing 1 1.4%
Conformity 1 1.4%
Consensus decision-making 1 1.4%
Controlled burn 1 1.4%
Coronavirus disease 2019 1 1.4%
Corporate governance 1 1.4%
Cost-effectiveness analysis 1 1.4%
Cost–benefit analysis 1 1.4%
Crime 1 1.4%
Cryosphere 1 1.4%
Cycling infrastructure 1 1.4%
DNA 1 1.4%
DNA sequencing 1 1.4%
Deforestation 1 1.4%
Derrick 1 1.4%
Desertification 1 1.4%
Design 1 1.4%
Diesel exhaust 1 1.4%
Diet (nutrition) 1 1.4%
Digital Earth 1 1.4%
Dioxins and dioxin-like compounds 1 1.4%
Disease 1 1.4%
Dose–response relationship 1 1.4%
Dust 1 1.4%
Earmark (politics) 1 1.4%
Earth 1 1.4%
Ecological design 1 1.4%
Economy and the environment 1 1.4%
Economy of Africa 1 1.4%
Education 1 1.4%
Educational technology 1 1.4%
Electrical connector 1 1.4%
Electricity generation 1 1.4%
Electronic waste 1 1.4%
Elevator 1 1.4%
Emerging technologies 1 1.4%
Emissions budget 1 1.4%
Energy development 1 1.4%
Energy modeling 1 1.4%
Energy policy of the European Union 1 1.4%
Energy security 1 1.4%
Energy transition 1 1.4%
Engineer 1 1.4%
Enterprise resource planning 1 1.4%
Environmental monitoring 1 1.4%
Environmental noise 1 1.4%
Environmental, social and corporate governance 1 1.4%
Erosion 1 1.4%
Eutrophication 1 1.4%
Exploration geophysics 1 1.4%
Exposure assessment 1 1.4%
Extreme weather 1 1.4%
Eye protection 1 1.4%
Fecal sludge management 1 1.4%
Federal Food, Drug, and Cosmetic Act 1 1.4%
Federal Insecticide, Fungicide, and Rodenticide Act 1 1.4%
Feed-in tariffs in Germany 1 1.4%
Fire extinguisher 1 1.4%
Food processing 1 1.4%
Food waste 1 1.4%
Forecasting 1 1.4%
Fossil fuel 1 1.4%
Fuel oil 1 1.4%
Fusion power 1 1.4%
Gas cylinder 1 1.4%
Gasification 1 1.4%
Gene 1 1.4%
Genome editing 1 1.4%
Genomics 1 1.4%
Geology 1 1.4%
Geomatics 1 1.4%
Geophysics 1 1.4%
Glacier 1 1.4%
Glacier mass balance 1 1.4%
Global natural environment 1 1.4%
Globally Harmonized System of Classification and Labelling of Chemicals 1 1.4%
Gold 1 1.4%
Gold mining 1 1.4%
Good laboratory practice 1 1.4%
Government shutdowns in the United States 1 1.4%
Green building 1 1.4%
Green recovery 1 1.4%
Grinding (abrasive cutting) 1 1.4%
Grinding wheel 1 1.4%
Gross domestic product 1 1.4%
Habitat Conservation Plan 1 1.4%
Habitat destruction 1 1.4%
Hail 1 1.4%
Handrail 1 1.4%
Hardware-in-the-loop simulation 1 1.4%
Health Hazard Evaluation Program 1 1.4%
Health in All Policies 1 1.4%
Health sciences 1 1.4%
Heating, ventilation, and air conditioning 1 1.4%
Hierarchy of hazard controls 1 1.4%
Hospital 1 1.4%
Human factors and ergonomics 1 1.4%
Hunger 1 1.4%
Hydropower 1 1.4%
Hydroxides 1 1.4%
Indirect land use change impacts of biofuels 1 1.4%
Information 1 1.4%
Information and communications technology 1 1.4%
Input/output 1 1.4%
Intensive farming 1 1.4%
Interlock (engineering) 1 1.4%
Internal control 1 1.4%
International environmental agreement 1 1.4%
Internet of things 1 1.4%
Issues in ethics 1 1.4%
Kyoto Protocol 1 1.4%
Labor relations 1 1.4%
Laguna de Bay 1 1.4%
Landslide 1 1.4%
Las Piñas–Parañaque Critical Habitat and Ecotourism Area 1 1.4%
Lead 1 1.4%
Learning 1 1.4%
Lease 1 1.4%
Lidar 1 1.4%
Life sciences 1 1.4%
Liquid dielectrics 1 1.4%
Lockout–tagout 1 1.4%
Logging 1 1.4%
Lubricants 1 1.4%
Machine learning 1 1.4%
Management 1 1.4%
Manas River 1 1.4%
Manila Bay 1 1.4%
Market-based environmental policy instruments 1 1.4%
Material-handling equipment 1 1.4%
Mathematical model 1 1.4%
Mathematical optimization 1 1.4%
Medical device 1 1.4%
Mega Ampere Spherical Tokamak 1 1.4%
Metabolomics 1 1.4%
Metagenomics 1 1.4%
Microbiome 1 1.4%
Micropropagation 1 1.4%
Mine reclamation 1 1.4%
Mining engineering 1 1.4%
Multiomics 1 1.4%
Municipal solid waste 1 1.4%
NEWater 1 1.4%
National Priorities List 1 1.4%
National debt of the United States 1 1.4%
Nationally Determined Contributions 1 1.4%
Natural capital accounting 1 1.4%
Natural heritage 1 1.4%
Next Generation EU 1 1.4%
Nitrogen cycle 1 1.4%
Noise pollution 1 1.4%
Nuclear decommissioning 1 1.4%
Nuclear fusion 1 1.4%
Nuclear power 1 1.4%
Nutrient pollution 1 1.4%
Nutrition 1 1.4%
Occupational Safety and Health Act (United States) 1 1.4%
Occupational noise 1 1.4%
Ocean 1 1.4%
Oil Pollution Act of 1990 1 1.4%
Old-growth forest 1 1.4%
Online auction 1 1.4%
Open-pit mining 1 1.4%
Organism 1 1.4%
Permissible exposure limit 1 1.4%
Pest control 1 1.4%
Photovoltaic system 1 1.4%
Pig 1 1.4%
Pipe (fluid conveyance) 1 1.4%
Plant tissue culture 1 1.4%
Pledge of Allegiance 1 1.4%
Politics 1 1.4%
Polybrominated diphenyl ethers 1 1.4%
Polychlorinated biphenyl 1 1.4%
Polychlorinated dibenzodioxins 1 1.4%
Polycyclic aromatic hydrocarbon 1 1.4%
Power station 1 1.4%
Pradhan Mantri Awas Yojana 1 1.4%
Predictive maintenance 1 1.4%
Primary energy 1 1.4%
Procedures of the United States House of Representatives 1 1.4%
Production (economics) 1 1.4%
Productivity 1 1.4%
Professional diving 1 1.4%
Propane 1 1.4%
Protein 1 1.4%
Proteomics 1 1.4%
Psoriasis 1 1.4%
Public–private partnership 1 1.4%
Pulse oximetry 1 1.4%
Purchasing power parity 1 1.4%
Pygmy hog 1 1.4%
Quality of life 1 1.4%
Radon 1 1.4%
Rain 1 1.4%
Reconciliation (United States Congress) 1 1.4%
Reflection seismology 1 1.4%
Refrigerants 1 1.4%
Registration, Evaluation, Authorisation and Restriction of Chemicals 1 1.4%
Regression analysis 1 1.4%
Regulation 1 1.4%
Regulation and licensure in engineering 1 1.4%
Remote work 1 1.4%
Renewable resource 1 1.4%
Representative Concentration Pathway 1 1.4%
Resource Management Act 1991 1 1.4%
Respirator 1 1.4%
Retreat of glaciers since 1850 1 1.4%
Right to know 1 1.4%
Riparian zone 1 1.4%
River 1 1.4%
Robot 1 1.4%
Rollover protection structure 1 1.4%
Rotterdam Convention 1 1.4%
Safety management system 1 1.4%
Satellite imagery 1 1.4%
Scaffolding 1 1.4%
Scenario planning 1 1.4%
Scientific method 1 1.4%
Scuba diving 1 1.4%
Sea level rise 1 1.4%
Sensitivity analysis 1 1.4%
Sensor 1 1.4%
Sewage 1 1.4%
Sewage sludge 1 1.4%
Shared transport 1 1.4%
Ship 1 1.4%
Snow 1 1.4%
Solar energy 1 1.4%
Solar power 1 1.4%
Speaker of the United States House of Representatives 1 1.4%
Special Report on Climate Change and Land 1 1.4%
Special Report on Global Warming of 1.5 °C 1 1.4%
Special Report on the Ocean and Cryosphere in a Changing Climate 1 1.4%
Stairs 1 1.4%
Steam 1 1.4%
Storm drain 1 1.4%
Student financial aid (United States) 1 1.4%
Sustainable Development Goal 1 1 1.4%
Sustainable Development Goal 10 1 1.4%
Sustainable Development Goal 11 1 1.4%
Sustainable Development Goal 12 1 1.4%
Sustainable Development Goal 2 1 1.4%
Sustainable Development Goal 6 1 1.4%
Sustainable Development Goal 8 1 1.4%
Sustainable Development Goal 9 1 1.4%
Sustainable consumption 1 1.4%
Sustainable design 1 1.4%
Sustainable urbanism 1 1.4%
Swachh Survekshan 1 1.4%
Systems ecology 1 1.4%
Tap (valve) 1 1.4%
Teacher 1 1.4%
Technology readiness level 1 1.4%
Technology roadmap 1 1.4%
Temperature 1 1.4%
Tephritidae 1 1.4%
The Green Deal 1 1.4%
Tilt up 1 1.4%
Tipping points in the climate system 1 1.4%
Tokamak 1 1.4%
Total maximum daily load 1 1.4%
Toxic equivalency factor 1 1.4%
Tribal colleges and universities 1 1.4%
Tritium 1 1.4%
Tropical cyclone forecasting 1 1.4%
Tugboat 1 1.4%
Tuition payments 1 1.4%
Underwater diving 1 1.4%
Unfunded mandate 1 1.4%
United Nations Climate Change conference 1 1.4%
United States budget process 1 1.4%
United States debt ceiling 1 1.4%
Unmanned aerial vehicle 1 1.4%
Upper Marikina River Basin Protected Landscape 1 1.4%
Urban green space 1 1.4%
Urban resilience 1 1.4%
Urbanization 1 1.4%
Usability 1 1.4%
Valuation (finance) 1 1.4%
Veganism 1 1.4%
Vegetable 1 1.4%
Waste-to-energy 1 1.4%
Water and politics 1 1.4%
Water and the environment 1 1.4%
Water cycle 1 1.4%
Water footprint 1 1.4%
Water heating 1 1.4%
Water management 1 1.4%
Water resource management 1 1.4%
Water security 1 1.4%
Water supply 1 1.4%
Water supply and sanitation in the European Union 1 1.4%
Water tariff 1 1.4%
Water treatment 1 1.4%
Well-being 1 1.4%
Wildfire suppression 1 1.4%
Wildland–urban interface 1 1.4%
Wind power 1 1.4%
Workplace 1 1.4%
World population 1 1.4%
Xylella fastidiosa 1 1.4%
earth sciences 1 1.4%

2022

abs rel
Natural environment 13 76.5%
Nature 11 64.7%
Biodiversity 10 58.8%
Climate change 10 58.8%
Climate change mitigation 10 58.8%
Earth sciences 10 58.8%
Sustainability 10 58.8%
Economy 9 52.9%
Environmental science 8 47.1%
Governance 8 47.1%
Infrastructure 8 47.1%
Agriculture 7 41.2%
Greenhouse gas emissions 7 41.2%
Health 7 41.2%
Environment 6 35.3%
Environmental technology 6 35.3%
Greenhouse gas 6 35.3%
Water 6 35.3%
Carbon neutrality 5 29.4%
Climate resilience 5 29.4%
Conservation biology 5 29.4%
Ecology 5 29.4%
Ecosystem service 5 29.4%
Risk 5 29.4%
Sustainable development 5 29.4%
Technology 5 29.4%
Carbon dioxide 4 23.5%
Climate 4 23.5%
Climate change adaptation 4 23.5%
Economic growth 4 23.5%
Ecosystem 4 23.5%
Environmental social science 4 23.5%
Flood 4 23.5%
Food 4 23.5%
Food security 4 23.5%
Human activities 4 23.5%
IPCC Sixth Assessment Report 4 23.5%
Low-carbon economy 4 23.5%
Nature-based solutions 4 23.5%
Physical geography 4 23.5%
Sustainable Development Goals 4 23.5%
Air pollution 3 17.6%
Biobased economy 3 17.6%
Biodiversity loss 3 17.6%
Biomass 3 17.6%
Carbon sequestration 3 17.6%
Carbon sink 3 17.6%
Circular economy 3 17.6%
Ecological resilience 3 17.6%
Effects of climate change 3 17.6%
European Green Deal 3 17.6%
Food industry 3 17.6%
Food system 3 17.6%
Global environmental issues 3 17.6%
Innovation 3 17.6%
Life-cycle assessment 3 17.6%
Natural resources 3 17.6%
Paris Agreement 3 17.6%
Poverty 3 17.6%
Sea level rise 3 17.6%
Subsidy 3 17.6%
Sustainable agriculture 3 17.6%
Transport 3 17.6%
United Nations Framework Convention on Climate Change 3 17.6%
Waste 3 17.6%
Agricultural policy 2 11.8%
Agricultural subsidy 2 11.8%
Agrifood systems 2 11.8%
Atmosphere of Earth 2 11.8%
Behavior 2 11.8%
Biofuel 2 11.8%
Biomonitoring 2 11.8%
Branches of science 2 11.8%
Breastfeeding 2 11.8%
COVID-19 pandemic 2 11.8%
Cereal 2 11.8%
Change 2 11.8%
Chemistry 2 11.8%
City 2 11.8%
Climate variability and change 2 11.8%
Coupled Model Intercomparison Project 2 11.8%
Developing country 2 11.8%
Diet (nutrition) 2 11.8%
Drought 2 11.8%
Earth phenomena 2 11.8%
Economic inequality 2 11.8%
Efficient energy use 2 11.8%
Emission intensity 2 11.8%
Energy 2 11.8%
Environmental conservation 2 11.8%
Environmental impact 2 11.8%
Extreme weather 2 11.8%
Food and drink 2 11.8%
Food prices 2 11.8%
Fossil fuel 2 11.8%
Hazard 2 11.8%
Healthy diet 2 11.8%
Heat wave 2 11.8%
Human nutrition 2 11.8%
Hunger 2 11.8%
IPCC Fifth Assessment Report 2 11.8%
IPCC Summary for Policymakers 2 11.8%
Kyoto Protocol 2 11.8%
Malnutrition 2 11.8%
Nationally Determined Contributions 2 11.8%
Natural capital 2 11.8%
Natural gas 2 11.8%
Natural resource management 2 11.8%
Nature conservation 2 11.8%
Nutrition 2 11.8%
Obesity 2 11.8%
Ocean 2 11.8%
Particulates 2 11.8%
Per- and polyfluoroalkyl substances 2 11.8%
Physical sciences 2 11.8%
Policy 2 11.8%
Pollution 2 11.8%
Price 2 11.8%
Reasons for concern 2 11.8%
Recession 2 11.8%
Reforestation 2 11.8%
Renewable energy 2 11.8%
Representative Concentration Pathway 2 11.8%
Research 2 11.8%
Rice 2 11.8%
Risk management 2 11.8%
Soil 2 11.8%
Solar power 2 11.8%
Special Report on Climate Change and Land 2 11.8%
Staple food 2 11.8%
Stunted growth 2 11.8%
Sustainable Development Goal 2 2 11.8%
Tipping points in the climate system 2 11.8%
Toxicity 2 11.8%
Vegetable 2 11.8%
Vulnerability 2 11.8%
Water pollution 2 11.8%
Water scarcity 2 11.8%
Wetland 2 11.8%
Wheat 2 11.8%
Wildfire 2 11.8%
Adsorption 1 5.9%
Agroecology 1 5.9%
Agroforestry 1 5.9%
Algal bloom 1 5.9%
Anaerobic digestion 1 5.9%
Animal testing 1 5.9%
Apprenticeship 1 5.9%
Atmosphere 1 5.9%
Audit 1 5.9%
Bank 1 5.9%
Bioaccumulation 1 5.9%
Biochar 1 5.9%
Biocide 1 5.9%
Bioconcentration 1 5.9%
Bioenergy with carbon capture and storage 1 5.9%
Biogeochemistry 1 5.9%
Biomagnification 1 5.9%
Biomass (ecology) 1 5.9%
Biorefinery 1 5.9%
Biosolids 1 5.9%
Blood 1 5.9%
Blue carbon 1 5.9%
Bottlenose dolphin 1 5.9%
Boundary Waters Canoe Area Wilderness 1 5.9%
Buffer zone 1 5.9%
Business 1 5.9%
Business model 1 5.9%
Car 1 5.9%
Carbon budget 1 5.9%
Carbon capture and storage 1 5.9%
Carbon dioxide removal 1 5.9%
Carbon price 1 5.9%
Carbon tax 1 5.9%
Carnivore 1 5.9%
Catalysis 1 5.9%
Charging station 1 5.9%
Chemical substance 1 5.9%
Climate change feedback 1 5.9%
Climate change policy of the United States 1 5.9%
Climate change vulnerability 1 5.9%
Climate finance 1 5.9%
Climate forcing 1 5.9%
Coal 1 5.9%
Coastal management 1 5.9%
Concentrated solar power 1 5.9%
Conservation agriculture 1 5.9%
Conservation movement 1 5.9%
Coolant 1 5.9%
Coral reef 1 5.9%
Correlation 1 5.9%
Coypu 1 5.9%
Crop rotation 1 5.9%
Data analysis 1 5.9%
Deforestation 1 5.9%
Desertification 1 5.9%
Dolphin 1 5.9%
Drylands 1 5.9%
EUR-Lex 1 5.9%
Earth 1 5.9%
Earthquake 1 5.9%
Earthquake warning system 1 5.9%
Earthscope 1 5.9%
Economic development 1 5.9%
Economy and the environment 1 5.9%
Ecosystem-based adaptation 1 5.9%
Education 1 5.9%
Electric battery 1 5.9%
Electric vehicle 1 5.9%
Electricity generation 1 5.9%
Endangered Species Act of 1973 1 5.9%
Endangered species 1 5.9%
Endocrine disruptor 1 5.9%
Energy development 1 5.9%
Energy industry 1 5.9%
Energy intensity 1 5.9%
Environmental degradation 1 5.9%
Environmental issues with fossil fuels 1 5.9%
Environmental law 1 5.9%
Environmental monitoring 1 5.9%
Environmental protection 1 5.9%
Environmental, social and corporate governance 1 5.9%
Epidemiology 1 5.9%
Eutrophication 1 5.9%
Evapotranspiration 1 5.9%
Evolution 1 5.9%
Extinction 1 5.9%
Extrapolation 1 5.9%
Fertilizer 1 5.9%
Fish 1 5.9%
Fluorinated gases 1 5.9%
Food web 1 5.9%
Forest 1 5.9%
Forestry 1 5.9%
Fuel 1 5.9%
Fusion power 1 5.9%
General circulation model 1 5.9%
Grassland 1 5.9%
Grazing 1 5.9%
Green infrastructure 1 5.9%
Greenhouse gas inventory 1 5.9%
Gross domestic product 1 5.9%
Habitat 1 5.9%
Habitat Conservation Plan 1 5.9%
Habitat conservation 1 5.9%
Habitat destruction 1 5.9%
Harmful algal bloom 1 5.9%
Health sciences 1 5.9%
Hepatocyte 1 5.9%
Holocene extinction 1 5.9%
Human impact on the environment 1 5.9%
Humidity 1 5.9%
Hybrid electric vehicle 1 5.9%
Industrial symbiosis 1 5.9%
Infection 1 5.9%
Intensive farming 1 5.9%
Internal audit 1 5.9%
Internal control 1 5.9%
Invasive species 1 5.9%
Ionizing radiation 1 5.9%
Kaya identity 1 5.9%
Kelp 1 5.9%
Kelp forest 1 5.9%
Land degradation 1 5.9%
Land development 1 5.9%
Land management 1 5.9%
Land use, land-use change, and forestry 1 5.9%
Land-use planning 1 5.9%
Levelized cost of energy 1 5.9%
Lithium-ion battery 1 5.9%
Liver 1 5.9%
Livestock 1 5.9%
Loss and damage 1 5.9%
Machine learning 1 5.9%
Mammal 1 5.9%
Management 1 5.9%
Mega Ampere Spherical Tokamak 1 5.9%
Meta-analysis 1 5.9%
Methane 1 5.9%
Microplastics 1 5.9%
Mining 1 5.9%
Mire 1 5.9%
Mobile app 1 5.9%
Mobility as a service 1 5.9%
Monarch butterfly 1 5.9%
Municipal solid waste 1 5.9%
Nanoinformatics 1 5.9%
Nanotechnology 1 5.9%
Nanotoxicology 1 5.9%
National Wildlife Refuge 1 5.9%
National recreation area 1 5.9%
Natural resource 1 5.9%
Nature reserve 1 5.9%
Noise pollution 1 5.9%
Nuclear power 1 5.9%
Occupational safety and health 1 5.9%
Organ (biology) 1 5.9%
Organic farming 1 5.9%
Organisms 1 5.9%
Ozone 1 5.9%
P-value 1 5.9%
Partition coefficient 1 5.9%
Pastoralism 1 5.9%
Peak oil 1 5.9%
Permaculture 1 5.9%
Permafrost 1 5.9%
Perovskite solar cell 1 5.9%
Persistent, bioaccumulative and toxic substances 1 5.9%
Pesticide 1 5.9%
Pharmacokinetics 1 5.9%
Pharmacology 1 5.9%
Photovoltaics 1 5.9%
Physiologically based pharmacokinetic modelling 1 5.9%
Planetary boundaries 1 5.9%
Plug-in hybrid 1 5.9%
Politics of climate change 1 5.9%
Polybrominated diphenyl ethers 1 5.9%
Post-traumatic stress disorder 1 5.9%
Precautionary principle 1 5.9%
Precision agriculture 1 5.9%
Prediction 1 5.9%
Protected area 1 5.9%
Radiative forcing 1 5.9%
Radioactive decay 1 5.9%
Reclaimed water 1 5.9%
Recycling 1 5.9%
Regenerative agriculture 1 5.9%
Registration, Evaluation, Authorisation and Restriction of Chemicals 1 5.9%
Regression analysis 1 5.9%
Regulatory compliance 1 5.9%
Remote sensing 1 5.9%
Reuse 1 5.9%
Rio Convention 1 5.9%
Riparian zone 1 5.9%
Risk assessment 1 5.9%
Salinity 1 5.9%
Sea 1 5.9%
Seismology 1 5.9%
Self-care 1 5.9%
Self-driving car 1 5.9%
Sequoiadendron giganteum 1 5.9%
Sewage treatment 1 5.9%
ShakeAlert 1 5.9%
Shared Socioeconomic Pathways 1 5.9%
Silvopasture 1 5.9%
Smallholding 1 5.9%
Smart city 1 5.9%
Social protection 1 5.9%
Societal collapse 1 5.9%
Soil erosion 1 5.9%
Solar energy 1 5.9%
Solar geoengineering 1 5.9%
Solubility 1 5.9%
Solvay process 1 5.9%
Special Report on the Ocean and Cryosphere in a Changing Climate 1 5.9%
Species distribution 1 5.9%
Statistics 1 5.9%
Stormwater 1 5.9%
Supply chain management 1 5.9%
Sustainable energy 1 5.9%
Sustainable finance 1 5.9%
Sustainable forest management 1 5.9%
Sustainable products 1 5.9%
Sustainable technologies 1 5.9%
Sustainable transport 1 5.9%
Synthetic fuel 1 5.9%
Systems ecology 1 5.9%
Tax 1 5.9%
Temperate climate 1 5.9%
Threatened species 1 5.9%
Tokamak 1 5.9%
Toxicology 1 5.9%
Trail 1 5.9%
Tritium 1 5.9%
Tropical cyclone 1 5.9%
Ultrafine particle 1 5.9%
Urban agriculture 1 5.9%
Urban forestry 1 5.9%
Urban green space 1 5.9%
Vehicle 1 5.9%
Vehicular automation 1 5.9%
Volatile organic compound 1 5.9%
Wastewater treatment 1 5.9%
Water purification 1 5.9%
Water quality 1 5.9%
Water resource management 1 5.9%
Water resources 1 5.9%
Weather 1 5.9%
Wildlife 1 5.9%
Wildlife corridor 1 5.9%
Wind power 1 5.9%
Zero-emissions vehicle 1 5.9%

wikitags: missing year

abs rel
Agriculture 3 50.0%
Human activities 3 50.0%
Sustainability 3 50.0%
Biodiversity 2 33.3%
Climate change mitigation 2 33.3%
Dangerous goods 2 33.3%
Earth sciences 2 33.3%
Ecology 2 33.3%
Economy 2 33.3%
Food 2 33.3%
Hazard 2 33.3%
Health 2 33.3%
Infrastructure 2 33.3%
Safety data sheet 2 33.3%
Specification (technical standard) 2 33.3%
Technology 2 33.3%
Wildfire 2 33.3%
2009 swine flu pandemic 1 16.7%
Abrasive 1 16.7%
Academic degree 1 16.7%
Active listening 1 16.7%
Aid 1 16.7%
Algal bloom 1 16.7%
Animal husbandry 1 16.7%
Annealing (metallurgy) 1 16.7%
Antimicrobial resistance 1 16.7%
Apprenticeship 1 16.7%
Artificial objects 1 16.7%
Avian influenza 1 16.7%
Bandsaw 1 16.7%
Bill (law) 1 16.7%
Biodiesel 1 16.7%
Biomedical engineering 1 16.7%
Bolikhamsai Province 1 16.7%
Boundary Waters Canoe Area Wilderness 1 16.7%
Brazing 1 16.7%
COVID-19 pandemic 1 16.7%
Calipers 1 16.7%
Charging station 1 16.7%
Chuck (engineering) 1 16.7%
Climate change 1 16.7%
Climate resilience 1 16.7%
College 1 16.7%
Committee 1 16.7%
Communication 1 16.7%
Computer-aided design 1 16.7%
Confined space 1 16.7%
Conservation biology 1 16.7%
Conservation movement 1 16.7%
Controlled burn 1 16.7%
Coral reef 1 16.7%
Coypu 1 16.7%
Cutting fluid 1 16.7%
Deforestation 1 16.7%
Disaster risk reduction 1 16.7%
Drill 1 16.7%
Drilling 1 16.7%
E-commerce 1 16.7%
Earmark (politics) 1 16.7%
Earthquake 1 16.7%
Earthquake warning system 1 16.7%
Earthscope 1 16.7%
Ecological resilience 1 16.7%
Economic development 1 16.7%
Ecosystem 1 16.7%
Ecosystem service 1 16.7%
Education 1 16.7%
Emergency management 1 16.7%
Endangered Species Act of 1973 1 16.7%
Endangered species 1 16.7%
Energy management 1 16.7%
Engine 1 16.7%
Environmental conservation 1 16.7%
Environmental law 1 16.7%
Environmental protection 1 16.7%
Environmental science 1 16.7%
Environmental social science 1 16.7%
Eurocode 3: Design of steel structures 1 16.7%
Eurocodes 1 16.7%
Farm 1 16.7%
Farmer 1 16.7%
Fertilizer 1 16.7%
Fire 1 16.7%
Flood 1 16.7%
Fly system 1 16.7%
Food and drink 1 16.7%
Food industry 1 16.7%
Food security 1 16.7%
Food sovereignty 1 16.7%
Food system 1 16.7%
Forecasting 1 16.7%
Forest 1 16.7%
Forestry 1 16.7%
Gas metal arc welding 1 16.7%
Gas tungsten arc welding 1 16.7%
Globally Harmonized System of Classification and Labelling of Chemicals 1 16.7%
Government 1 16.7%
Green Revolution 1 16.7%
Greenhouse gas 1 16.7%
Grinding (abrasive cutting) 1 16.7%
Grinding wheel 1 16.7%
Grocery store 1 16.7%
Habitat Conservation Plan 1 16.7%
Habitat conservation 1 16.7%
Harmful algal bloom 1 16.7%
Heat treating 1 16.7%
Hoist (device) 1 16.7%
Hydrology 1 16.7%
IEC 60601 1 16.7%
Industrial processes 1 16.7%
Industries (economics) 1 16.7%
Influenza 1 16.7%
Influenza A virus subtype H1N1 1 16.7%
Information 1 16.7%
Inspection 1 16.7%
Intellectual property 1 16.7%
International Treaty on Plant Genetic Resources for Food and Agriculture 1 16.7%
Internet of things 1 16.7%
Invasive species 1 16.7%
Kratié Province 1 16.7%
Lathe 1 16.7%
Learning 1 16.7%
Livestock 1 16.7%
Loan 1 16.7%
Lubricant 1 16.7%
Machine 1 16.7%
Malnutrition 1 16.7%
Management 1 16.7%
Manufactured goods 1 16.7%
Manufacturing 1 16.7%
Market (economics) 1 16.7%
Mass Rapid Transit (Singapore) 1 16.7%
Mechanical engineering 1 16.7%
Medical device 1 16.7%
Mekong 1 16.7%
Mentorship 1 16.7%
Metal 1 16.7%
Metal lathe 1 16.7%
Metallurgy 1 16.7%
Metalworking 1 16.7%
Meteorology 1 16.7%
Micrometer 1 16.7%
Mill (grinding) 1 16.7%
Milling (machining) 1 16.7%
Millwright 1 16.7%
Monarch butterfly 1 16.7%
Monoculture 1 16.7%
Monsoon 1 16.7%
National Wildlife Refuge 1 16.7%
National debt of the United States 1 16.7%
National recreation area 1 16.7%
Natural disaster 1 16.7%
Natural environment 1 16.7%
Natural resource management 1 16.7%
Natural resources 1 16.7%
Nature 1 16.7%
Nature conservation 1 16.7%
Nature reserve 1 16.7%
Nature-based solutions 1 16.7%
Old-growth forest 1 16.7%
Oxy-fuel welding and cutting 1 16.7%
Pandemic 1 16.7%
Particulates 1 16.7%
Personal protective equipment 1 16.7%
Pesticide 1 16.7%
Photovoltaic system 1 16.7%
Photovoltaics 1 16.7%
Physical geography 1 16.7%
Plant breeding 1 16.7%
Plant genetic resources 1 16.7%
Poverty 1 16.7%
Precision agriculture 1 16.7%
Primary sector of the economy 1 16.7%
Procedures of the United States House of Representatives 1 16.7%
Quenching 1 16.7%
Rail transport 1 16.7%
Rapid transit 1 16.7%
Reconciliation (United States Congress) 1 16.7%
Rice 1 16.7%
Risk management 1 16.7%
River 1 16.7%
Safety 1 16.7%
Saw 1 16.7%
Screw thread 1 16.7%
Seismology 1 16.7%
Sequoiadendron giganteum 1 16.7%
ShakeAlert 1 16.7%
Shielded metal arc welding 1 16.7%
Shielding gas 1 16.7%
Smallholding 1 16.7%
Social vulnerability 1 16.7%
Soil 1 16.7%
Soldering 1 16.7%
Steel 1 16.7%
Student financial aid (United States) 1 16.7%
Subsidy 1 16.7%
Supply chain 1 16.7%
Surgical mask 1 16.7%
Swine influenza 1 16.7%
Tax 1 16.7%
Teacher 1 16.7%
Tempering (metallurgy) 1 16.7%
Theodolite 1 16.7%
Threatened species 1 16.7%
Tonlé Sap 1 16.7%
Tools 1 16.7%
Trail 1 16.7%
Transmission (mechanics) 1 16.7%
Tribal colleges and universities 1 16.7%
Tuition payments 1 16.7%
Unfunded mandate 1 16.7%
United States Code 1 16.7%
United States budget process 1 16.7%
United States debt ceiling 1 16.7%
Unmanned aerial vehicle 1 16.7%
Urban agriculture 1 16.7%
Urban rail transit 1 16.7%
Vehicular automation 1 16.7%
Vientiane Province 1 16.7%
Water 1 16.7%
Water footprint 1 16.7%
Weather 1 16.7%
Weather forecasting 1 16.7%
Welding 1 16.7%
Wildland–urban interface 1 16.7%
Wildlife 1 16.7%
Zoonosis 1 16.7%