Related by context. Frequent words. (Click for all words.) 74 carbon emission 73 greenhouse gas emissions 72 greenhouse emissions 72 emissions 71 carbon emissions 70 greenhouse gas emission 68 greenhouse gases 68 carbon dioxide emissions 67 greenhouse gas 67 emission reductions 66 emission reduction 64 greenhouse gasses 64 CO2 emissions 64 emission 63 GHG emissions 62 reducing carbon emissions 61 reduce carbon emissions 59 GHG 59 CO2 57 Kyoto protocol 57 climate change 57 Emissions 57 carbon 57 global warming gases 57 heat trapping gases 55 fossil fuel 55 Kyoto Protocol 55 global warming 53 carbon dioxide 53 fossil fuels 52 pollution 52 Kyoto 52 mercury emissions 52 renewables 51 carbon credits 51 carbon dioxide CO2 50 Kyoto treaty 50 renewable energy 50 air pollution 50 carbon capture 50 sulfur dioxide emissions 49 reducing greenhouse gas 49 emitters 48 carbon sequestration 48 biofuels 48 polluters 47 tailpipe emissions 47 reduce greenhouse gas 47 atmospheric carbon dioxide 46 renewable energies 46 Climate Change 46 carbon footprints 46 biofuel 46 coal fired 46 exhaust emissions 46 polluter 45 carbon offsets 45 carbon footprint 45 nitrogen oxide 45 NOx 44 deforestation 44 burning fossil fuels 44 polluting 44 renewable 44 bio fuels 44 poorer nations 44 mercury pollution 43 carbon neutral 43 legally binding 43 zero emission 43 alternative fuels 43 coal 43 renewable fuels 43 sulfur dioxide 42 Montreal Protocol 42 UNFCCC 42 IEA 42 pollutants 41 nitrogen oxides 41 bioethanol 41 biomass 41 ETS 41 ozone 41 Developing nations 41 Energy Agency 41 pollutant 41 CERs 41 Low Carbon 40 Copenhagen Accord 40 Renewable energy 40 cleaner burning 40 biodiversity 40 EPA 40 industrialized countries 40 offsets 40 smog 40 environmental 40 emitter 39 acid rain 39 climate 39 bioenergy