Related terms:
epa
smog
scrubber
acid rain
air quality
amendments
gasoline
emissions
particulate
pollution
million tons
air pollution
sulfur dioxide
acid rain program
mercury emissions
dispersion modeling
greenhouse gases
pollution control act
climate change
carbon dioxide
environmental
united states congress
environmental protection agency
united states environmental protection agency
united states
Wikipedia sources:
Clean Air Act
Acid rain
Air pollution
United States Environmental Protection Agency
Mercury (element)
Shell Oil Company
Emissions trading
List of United States federal legislation
Context for words:
clean
air
act
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