Related by context. Frequent words. (Click for all words.) 78 CO2 72 carbon dioxide 70 carbon dioxide CO2 69 CO2 emissions 65 carbon dioxide emissions 65 C# emissions 64 carbon emissions 63 Carbon Dioxide 63 carbon dioxide CO2 emissions 63 carbon 62 greenhouse gasses 62 carbon dioxide emission 61 GHGs 61 greenhouse gases 61 carbon dioxide emitted 60 CO2 emission 60 atmospheric CO2 59 greenhouse gas 59 particulate emissions 58 carbon emission 58 emissions 57 greenhouse gas emissions 57 atmospheric carbon dioxide 57 greenhouse emissions 56 GHG 56 reduce carbon emissions 56 SO2 56 greenhouse gas GHG emissions 55 GHG emissions 55 methane 53 reducing carbon emissions 53 emission 53 reducing CO2 emissions 53 NOx 51 nitrogen 51 carbon footprint 51 greenhouse gases emitted 51 water vapor 51 carbon sinks 51 greenhouse gas emission 50 NOx emissions 50 gases 50 biochar 50 fossil fuel 50 sulfur dioxide 50 emission reductions 49 Carbon dioxide 49 exhaust emissions 48 Emissions 48 #ppm [001] 48 carbon emitting 48 pollutant 48 pollutants 48 biomass 47 Greenhouse gases 47 bioethanol 47 sulfur dioxide emissions 47 gasses 47 fossil fuels 47 recyclable waste 47 CFCs 47 aerosols 47 harmful pollutants 46 Carbon Footprint 46 pollution 46 hydrogen 46 nitrogen oxides 46 VOCs 46 emission reduction 46 emitted 46 carbon neutral 45 CO 45 refrigerant 45 ozone 45 nitrogen oxide 45 carbon credits 45 nitrogen oxide emissions 45 flue gas 45 anthropogenic 45 combustion 45 #g/km [001] 45 absorb carbon dioxide 45 global warming gases 45 carbon offsetting 45 carbon sequestration 45 refrigerants 45 ozone depletion 44 renewables 44 tailpipe emissions 44 carbon footprints 44 particulates 44 KWh 44 particulate matter 44 biosphere 43 Carbon 43 ozone depleting substances 43 ecological footprint 43 sulphate 43 Greenhouse Gas 43 emit 43 emitting