Clean Air Act effectively decreasing air pollution: study
April 25, 2013 (WLS) -- America's air is getting cleaner, according to a new study.
The American Lung Association's annual "State of the Air" report is based on the Environmental Protection Agency's findings for 2009 through 2011.
The report shows that the three types of air pollution tracked-ozone, short-term and year-round particle pollution- have all declined.
The American Lung Association credits the Clean Air Act with reducing pollution levels.
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