Los Angeles Tops 'Dirty Air' ListThanks to the Clean Air Act, a lot of people in the United States are breathing a little easier. The American Lung Association’s “State of the Air 2013″ report, which analyzed ozone and particle levels in the air from 2009 to 20011, showed that the...    Â
Source: Los Angeles Tops 'Dirty Air' List (http://abcnews.go.com/blogs/health/2013/04/24/los-angeles-tops-dirty-air-list-for-13th-time-in-14-years/)