Related by context. Frequent words. (Click for all words.) 60 greenhouse emissions 60 greenhouse gases 60 greenhouse gas emissions 60 fossil fuels 59 fossil fuel 57 emitters 56 greenhouse gas 56 polluting 56 carbon dioxide emissions 55 carbon emissions 55 reduce carbon emissions 55 GHG emissions 54 emissions 53 polluters 53 reducing carbon emissions 53 emission reductions 52 greenhouse gas emission 52 polluter 52 emission reduction 51 heat trapping gases 51 burning fossil fuels 50 carbon emission 49 CO2 emissions 49 renewables 48 coal fired 48 renewable energy 47 renewable 47 carbon dioxide 47 coal 47 emission 47 GHG 46 renewable fuels 46 industrialized 46 biofuels 46 Emissions 46 reduce greenhouse gas 46 mercury emissions 45 carbon 44 Kyoto Protocol 44 cleaner burning 43 industrialized nations 43 biofuel 43 emitting 43 alternative fuels 43 carbon dioxide CO2 43 pollutant 43 pollution 42 renewable energies 42 climate change 42 Renewable energy 42 industrialized countries 42 reducing greenhouse gas 42 nitrogen oxides 42 environmentally sound 42 CO2 42 energy 41 carbon footprints 41 ethanol 41 emitter 41 air pollution 41 liquid fuels 41 biomass 41 carbon footprint 41 environmentally friendly 40 Kyoto protocol 40 gigawatts 40 global warming 40 pollutants 40 electric utilities 39 emerging economies 39 carbon capture 39 tar sands 39 cellulosic ethanol 39 nitrogen oxide 38 Bodman 38 rare earths 38 environmentally sustainable 38 UNFCCC 38 oil sands 38 greenest 38 gas guzzling 38 gas guzzlers 38 bio fuels 38 oilsands 37 emit 37 carbon neutral 37 megawatts 37 multilateral 37 diesel 37 liquefied natural gas 37 APEC 37 biodiesel 37 zero emission 37 greener 37 nations 37 feedstock 37 hydroelectric 37 methane 37 hydropower 36 Renewables 36 Carbon dioxide