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How much can the government regulate air pollution?

12:10 PM, Oct 16, 2013   |    comments
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WASHINGTON (WUSA9) -- The Supreme Court will re-examine the federal regulation on air pollution.

At issue is whether the Environmental Protection Agency can tighten emission standards for stationary greenhouse gas sources, such as power plants.

The high court affirmed the conclusions by much of the scientific community that greenhouse gases are an air pollutant, but that case dealt with emissions from motor vehicles.

A range of business groups claims after the 2007 ruling the agency improperly extended its regulatory authority.

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