Related by context. Frequent words. (Click for all words.) 75 emit carbon dioxide 68 emit greenhouse gases 60 carbon dioxide emission 59 emissions 59 CO2 emission 59 pollute 59 greenhouse gases 58 carbon emission 58 CO2 58 carbon dioxide emissions 57 emission 57 carbon dioxide 57 carbon emissions 56 carbon credits 56 emit 56 CO2 emissions 54 greenhouse gasses 54 GHGs 54 greenhouse gas emissions 53 emission reductions 53 emission reduction 53 greenhouse gas emission 52 carbon emitting 52 carbon dioxide emitted 52 carbon dioxide CO2 52 emission allowances 52 fossil fuels 52 greenhouse gas 52 Emissions 51 carbon 51 GHG emissions 51 fossil fuel 50 C# emissions 50 carbon dioxide CO2 emissions 50 heat trapping gases 49 greenhouse gases emitted 49 GHG 49 polluting 49 burning fossil fuels 49 CERs 49 absorb carbon dioxide 49 EU ETS 49 pollution 49 greenhouse emissions 49 tailpipe emissions 48 Carbon Dioxide 48 Fossil fuels 48 Clean Development Mechanism 48 polluters 47 reduce carbon emissions 47 heat trapping greenhouse gases 47 polluting industries 47 emitters 46 global warming gases 46 gases 46 pollutant 45 particulate emissions 45 carbon emitters 45 heat trapping emissions 45 sulfur dioxide 45 carbon offsets 45 greenhouse gas GHG emissions 45 Emission 45 Emissions Trading Scheme 45 sulfur dioxide emissions 45 reducing CO2 emissions 45 carbon sinks 44 Greenhouse gases 44 polluter 44 emitting 44 CFCs 44 reducing carbon emissions 44 Polluters 44 harmful pollutants 44 EU Emissions Trading 43 SO2 43 biomass 43 exhaust emissions 43 Environment Commissioner Stavros 43 Carbon dioxide 43 Waxman Markey bill 43 renewables 43 NOx 43 air pollution 43 anthropogenic 43 pollutants 43 harmful gases 42 greenhouse gas emitters 42 regulate greenhouse gases 42 Kyoto Protocol 42 Kyoto protocol 42 Offsets 42 toxic pollutants 42 nitrogen oxide emissions 42 renewable 42 cleaner fuels 42 mercury emissions 42 carbon dioxide methane 42 methane 41 baseload 41 heat trapping