Related by context. Frequent words. (Click for all words.) 63 regulate greenhouse gases 60 regulate tailpipe emissions 59 regulate carbon dioxide 58 tailpipe standards 58 regulate greenhouse gas 57 regulating greenhouse gas 56 regulating greenhouse gases 53 tailpipe emissions 51 reduce greenhouse gas 50 heat trapping gasses 50 Environmental Protection Agency 49 smokestack emissions 49 EPA 48 remove gray wolves 47 judge Priscilla Owen 46 curbing carbon emissions 46 greenhouse gases 46 Assemblywoman Fran Pavley 46 curbing greenhouse gases 46 fleetwide average 46 greenhouse gas emissions 46 heat trapping gases 45 sulfur dioxide nitrogen oxides 45 additive MTBE 45 greenhouse gases endanger 44 heat trapping emissions 44 liquefied coal 44 cleaner burning 44 heat trapping carbon emissions 44 Sen. Fran Pavley 44 global warming gases 44 heat trapping pollution 44 greenhouse gas emission 44 ban judicial filibusters 44 emission 43 impose punitive 43 emissions 43 Ariz. gov 43 dishwashers washing machines 43 gases blamed 43 avoid speculative bubbles 43 alternative fuels 43 reduce carbon emissions 43 Russ Feingold D Wis 42 greenhouse gas 42 emit greenhouse gases 42 carbon dioxide emissions 42 mercury pollution 42 warming gases 42 curbing greenhouse gas 42 smog forming emissions 42 By DUSTIN BLEIZEFFER 42 greenhouse gas emitters 42 GHG reduction 42 pollutants emitted 42 Pollution Control Agency 42 President Barack Obama 42 Democrat Dianne Feinstein 42 posts maturely 42 environmentalists 42 Waxman Markey climate 41 retool factories 41 TALLAHASSEE Gov. Jeb 41 Clean Air 41 Pavley 41 global warming 41 lawmakers 41 ratify Kyoto 41 greenhouse gas emitting 41 Clarence Brimmer 41 greenhouse emissions 41 Gov. Arnold Schwarzenegger 41 greenhouse gases emitted 41 Kenneth Cuccinelli 41 mercury emissions 41 Sierra Club 40 sulfur dioxide nitrogen oxide 40 Sens. Barbara Boxer 40 polluting 40 enact 40 curb 40 brake override systems 40 Secretary Steven Chu 40 repeal ObamaCare 40 Renewable Portfolio Standards 40 By Julian Pecquet 40 CAFE standards 40 % #F# 3v.jsn 40 sulfur dioxide SO2 40 EPA Administrator 40 tailpipe 40 Environmentalists 40 emit CO2 40 carbon dioxide emission 40 LCFS 40 prevent speculative bubbles 40 combating global warming 40 reducing greenhouse gas 40 Governor Arnold Schwarzenegger 40 emmissions 40 confusing patchwork