Related by context. Frequent words. (Click for all words.) 57 Clean Air 47 mercury emissions 45 EPA 44 mercury pollution 44 Clean Energy 43 Global Warming 42 tailpipe emissions 42 Clean Coal 41 emissions 41 regulate greenhouse gases 41 Obamacare 40 coal fired 40 Emissions 40 ObamaCare 40 reducing carbon emissions 40 greenhouse gases 39 EFCA 39 Environmental Protection Agency 39 RES 39 carbon emissions 39 SCHIP 38 Sierra Club 38 mountaintop mining 38 greenhouse gas 38 greenhouse emissions 38 Pollution 38 Employee Free 38 pollution 38 air pollution 38 carbon dioxide emissions 38 nitrogen oxide emissions 38 smog 38 privatizing Social Security 38 Volcker Rule 38 legislation 37 RGGI 37 Clean Water Act 37 Renewable Energy 37 greenhouse gas emissions 37 MTBE 37 emission reductions 37 CFPA 37 pollutant 37 Dodd Frank 37 tort reform 37 Air Quality 37 emission allowances 37 single payer 36 emission 36 polluters 36 GHGs 36 reduce carbon emissions 36 NOx 36 acid rain 36 Affordable Care Act 36 polluter 36 Smog 36 Air Pollution Control 36 global warming 36 emission reduction 36 renewable fuels 36 Baucus 35 bill 35 renewable energy 35 mountaintop removal 35 FutureGen 35 sulfur dioxide 35 sulfur dioxide emissions 35 Fuel Economy 35 Clean Water 35 Emergency Economic Stabilization 35 pollutants 35 PPACA 35 Safe Drinking Water 35 Kyoto accord 35 NRDC 35 renewables 35 Regional Greenhouse Gas 35 GHG 35 IGCC 35 HCR 35 coal gasification 35 net neutrality 34 privatize Social Security 34 HR# [003] 34 nitrogen oxide 34 greenhouse gasses 34 Rahall 34 PATRIOT Act 34 reduce greenhouse gas 34 Clean 34 Climate Change 34 regulate carbon dioxide 34 Congressional Budget Office 34 offshore drilling 34 Cape Wind 34 nitrogen oxides 34 mountaintop removal mining 34 environmentalists 34 Manchin 34 Air Pollution