Related by context. Frequent words. (Click for all words.) 70 greenhouse gases 67 heat trapping gases 62 greenhouse gasses 61 greenhouse gas emissions 61 carbon dioxide 61 greenhouse emissions 60 carbon dioxide emissions 59 greenhouse gas 58 carbon emissions 57 emissions 56 GHGs 55 global warming gases 54 greenhouse gas emission 54 carbon dioxide CO2 53 greenhouse gas GHG emissions 52 gases blamed 51 CO2 emissions 51 gases 51 pollutants 51 emission reductions 51 CO2 51 fossil fuels 50 emitters 50 reducing carbon emissions 50 GHG emissions 50 Kyoto Protocol 49 burning fossil fuels 49 carbon emission 49 polluters 49 carbon dioxide CO2 emissions 48 carbon 48 emission 48 reduce carbon emissions 48 fossil fuel 47 global warming 47 methane 47 atmospheric carbon dioxide 47 climate change 47 GHG 47 Kyoto accord 46 emission reduction 46 Kyoto pact 46 pollution 46 Carbon dioxide 46 mercury emissions 46 CFCs 45 sulfur dioxide emissions 45 legally binding treaty 45 polluter 45 polluting industries 45 nitrogen oxides 44 Emissions 44 nitrogen oxide emissions 44 gasses 43 Kyoto treaty 43 tropical forests 43 HFCs 43 nitrogen oxide 43 Kyoto protocol 43 oceans 43 CO2 emission 43 pollutant 42 polluting 42 reduce greenhouse gas 42 Copenhagen Accord 42 poorer nations 42 emitter 42 nitrogen 42 Developing nations 42 emission allowances 42 sulfur dioxide 41 reducing CO2 emissions 41 aerosols 41 regulate greenhouse gases 41 droughts floods 41 phytoplankton 41 soot 40 industrialized countries 40 water vapor 40 tailpipe emissions 40 mercury pollution 40 industrialized nations 40 deforestation 40 NOx 39 methyl bromide 39 air pollution 39 combating global warming 39 Kyoto 39 Climate Change IPCC 39 exhaust emissions 39 ozone pollution 39 anthropogenic 39 biofuels 38 carbon credits 38 regulate carbon dioxide 38 hazardous wastes 38 ozone layer 38 CERs 38 Climate Change UNFCCC 38 ozone 38 Montreal Protocol