Related by context. Frequent words. (Click for all words.) 59 pollutants emitted 56 greenhouse gases emitted 56 emit CO2 55 nitrous oxide emissions 54 carbon dioxide emissions 54 carbon dioxide 53 greenhouse gases 53 emmissions 53 GHGs 53 gases emitted 53 greenhouse gas 53 greenhouse gas emissions 52 emission 52 greenhouse gasses 52 carbon dioxide emission 52 greenhouse gases GHGs 52 emissions 51 sulfur dioxide SO2 51 carbon dioxide emitted 51 Carbon dioxide emissions 50 carbon emitted 50 GHG emission 50 smog forming emissions 50 pollutant emissions 50 emit carbon dioxide 50 carbon dioxide CO2 50 emitting carbon dioxide 49 nitrous oxides 49 Co2 49 CO ² 49 CO2 49 sulfur dioxide nitrogen oxides 49 carbon emissions 49 carbon dioxide methane 49 CO2 emitted 49 heat trapping carbon dioxide 48 greenhouse gas GHG 48 greenhouse gases GHG 48 carbon dioxide methane nitrous 48 greenhouse gas emission 48 CO2 emissions 48 carbon emission 48 greenhouse emissions 47 preindustrial levels 47 co2 47 warming gases 47 pollution 47 SO2 emissions 47 C# emissions 47 sulfur oxide 47 CO2 emission 47 emitting greenhouse gases 47 greenhouse emission 46 particulate matter emissions 46 polluting 46 GHG 46 heat trapping gases 46 pesticides fertilizers 46 greenhouse gas emission reductions 46 Mitloehner 46 greenhouse gas GHG emissions 46 reduce carbon emissions 46 GHG emissions 46 exhaust emission 46 Emissions 46 EarthTalk 46 nitrogen oxide emissions 45 sulfur oxides 45 heat trapping emissions 45 pollutant 45 CO2 Emissions 45 emitting 45 nitrogen oxides 45 greenhouse gas emitting 45 carbon dioxide CO2 emissions 45 CO -2 45 reducing carbon emissions 45 emit greenhouse gases 45 Emission Reduction 45 carbon emission reductions 45 hydrofluorocarbons 44 herbicides pesticides 44 Greenhouse gases 44 sulfur dioxide nitrogen oxide 44 GHG reductions 44 nitrogen oxides NOx 44 emitted 44 reduce greenhouse gas 44 emit 44 nitrogen oxide 44 wind turbines solar panels 44 Carbon Dioxide 44 tailpipe emissions 44 Polluting 44 smokestack emissions 44 carbon sequestration 44 carbon 44 absorbing carbon dioxide 44 livestock manure 43 GHG reduction 43 CO2 emitting