Related by context. Frequent words. (Click for all words.) 66 CO2 emissions 65 Co2 63 CO2 emission 62 CO2 62 C# emissions 62 carbon emissions 62 carbon dioxide emissions 62 carbon dioxide emission 61 CO2 emitted 59 emissions 58 greenhouse emissions 57 greenhouse gas emissions 57 nitrous oxide emissions 56 greenhouse gasses 55 carbon emitted 55 carbon emission 55 exhaust emissions 55 GHGs 55 carbon dioxide emitted 55 Carbon dioxide emissions 55 emission 55 greenhouse gases 54 NOx emissions 54 particulate emissions 54 carbon dioxide CO2 emissions 53 reducing CO2 emissions 53 pollutant emissions 53 greenhouse gas 52 carbon dioxide 52 reduce carbon emissions 52 greenhouse gas GHG emissions 51 GHG emissions 51 greenhouse gases emitted 51 NOx 51 Emissions 51 carbon dioxide CO2 51 carbon footprint 50 greenhouses gases 50 reducing carbon emissions 50 carbon emitting 50 pollution 50 greenhouse gas emission 50 Carbon Dioxide 49 carbon 49 consumptions 49 carbon footprints 48 emission reduction 48 fossil fuel 47 tailpipe emissions 47 NO2 47 HCFC 46 carbon offsetting 46 polluting 46 carbons 46 nitrogen oxide emissions 46 GHG 46 Emissions Trading Scheme 46 atmospheric CO2 46 nitrogen oxide 46 CAFE standards 46 heat trapping carbon dioxide 46 pollutant 45 burning fossil fuels 45 nitrogen oxides 45 air pollution 45 diesel 45 ecological footprint 45 megatonnes 45 kilojoules 45 Emission 45 emission reductions 44 environmentally damaging 44 Greenhouse Gases 44 ozone depleting 44 airborne pollutants 44 emit carbon dioxide 44 fossil fuels 44 consumption 44 landfilling 43 pollutants 43 warming gases 43 Greenhouse Gas Emissions 43 recyclability 43 greenhouse gas GHG 43 global warming 43 #ppm [001] 42 environmentally harmful 42 Monbiot 42 Carbon Footprint 42 heat trapping emissions 42 nitrogen fertilizers 42 bioethanol 42 global warming gases 42 SO2 42 landfilled 42 nitrogen 42 Greenhouse gases 42 harmful gases 42 Environment Commissioner Stavros 42 biofuel 42 #g/km [001]