Related by context. Frequent words. (Click for all words.) 59 CFCs 53 Montreal Protocol 50 HFC 50 refrigerants 46 CFLs 46 greenhouse gases 44 greenhouse gas 44 GHG emissions 44 refrigerant 44 greenhouse gasses 42 greenhouse gas emissions 42 GHG 42 fossil fuels 42 emission reduction 42 carbon dioxide emissions 42 incandescent bulbs 42 heat trapping gases 42 emission reductions 41 carbon dioxide 41 UNFCCC 41 methyl bromide 41 fossil fuel 41 reducing carbon emissions 40 carbon emission 40 CFC 40 carbon emissions 39 Kyoto Protocol 39 CFL bulbs 39 reduce carbon emissions 39 VOCs 39 CO2 emissions 39 biofuels 39 renewable energies 39 carbon dioxide CO2 39 compact fluorescent bulbs 38 polluting industries 38 global warming 38 bio fuels 38 ozone layer 38 CO2 38 greenhouse emissions 38 CERs 38 emitters 38 Kyoto treaty 38 emissions 37 incandescent bulb 37 ENERGY STAR 37 burning fossil fuels 37 renewables 37 greenhouse gas emission 36 cleaner fuels 36 Kyoto protocol 36 mercury pollution 36 polluters 36 phaseout 36 geoengineering 36 multilateral 35 chemical fertilizers 35 atmospheric carbon dioxide 35 EU ETS 35 CO2 emission 35 climate change 35 MTBE 35 aerosols 35 biofuel 35 flame retardants 35 NOx 35 IPCC 34 alternative fuels 34 harmful chemicals 34 methane 34 Basel III 34 emission 34 gases 34 Clean Development Mechanism 34 legally binding treaty 34 carbon sequestration 34 renewable energy 34 industrialized countries 34 emerging economies 34 nitrogen oxides 34 ethanol blended 34 Carbon dioxide 34 LDCs 33 Kyoto accord 33 deforestation 33 renewable fuels 33 mercury emissions 33 carbon credits 33 Climate Change 33 carbon 33 tropical forests 33 Developing nations 33 alternative energies 33 detergents 33 volatile organic compounds 33 chemicals 33 polluter 33 UNEP 33 Framework Convention 32 regulate greenhouse gases