Related by context. Frequent words. (Click for all words.) 60 greenhouse gas emissions 59 greenhouse emissions 59 reducing carbon emissions 58 reducing greenhouse gas 58 greenhouse gases 57 greenhouse gas emission 57 greenhouse gas 56 climate change 55 emission reduction 54 carbon emissions 54 emission reductions 54 emissions 53 reduce carbon emissions 52 global warming 52 reduce greenhouse gas 52 carbon dioxide emissions 51 carbon emission 50 tailpipe emissions 49 greenhouse gasses 49 heat trapping gases 48 biofuels 48 polluters 48 emitters 47 emission 47 poorer nations 47 GHG emissions 47 Kyoto treaty 46 Kyoto Protocol 46 renewable fuels 46 Copenhagen Accord 45 burning fossil fuels 45 fossil fuels 44 carbon capture 44 carbon 43 CO2 emissions 43 alternative fuels 43 Kyoto protocol 43 mercury emissions 43 renewable energy 42 GHG 42 biofuel 42 carbon sequestration 41 polluter 41 renewables 41 fossil fuel 41 Emissions 41 pollution 40 mercury pollution 40 Climate Change 40 Climate Change UNFCCC 40 carbon dioxide 40 Kyoto 40 Environmental Protection Agency 40 Secretary Steven Chu 39 ethanol 39 renewable energies 39 genetically modified crops 39 cleaner burning 39 air pollution 39 climate 38 zero emission 38 Yvo de Boer 38 poverty eradication 38 coal fired 38 environmentalists 38 acid rain 37 EPA 37 Automakers 37 cellulosic ethanol 37 Developing nations 37 Global warming 37 carbon offsets 37 geoengineering 37 REDD 37 Renewable energy 37 Montreal Protocol 37 carbon credits 37 Environmentalists 37 genetically modified foods 37 President Barack Obama 36 biotech crops 36 renewable 36 bio fuels 36 hydrogen fuel 36 blueprint 36 CARB 36 smart grids 36 Alberta oilsands 36 environmentalism 36 congestion pricing 36 UNFCCC 36 Climate Action 36 House Speaker Nancy 35 emerging economies 35 nuclear nonproliferation 35 coal gasification 35 Millennium Development Goals 35 pollutant 35 bioenergy 35 Indo US nuclear 35 farm subsidies