http://www.edf.org/documents/2695_cleanairact.htm
By 1995, the percentage of U.S. children with elevated blood-lead levels has dropped from 88.2% in the 1970s to 4.4%, according to data compiled by the Centers for Disease Control and Prevention.
By 2000, Almost all the pollutants that contribute to the National Ambient Air Quality Standards have significantly decreased since 1970:
- Carbon Monoxide: 31% decrease
- Sulfur Dioxide: 27% decrease
- Particulate Matter* (PM-10): 71% decrease
- Lead: 98% decrease
The health effect to 2020
http://yosemite.epa.gov/opa/admpress.nsf/6427a6b7538955c585257359003f0230/f8ad3485e788be5a8525784600540649!OpenDocument
The clean air act is under attack.
http://www.adventure-journal.com/2011/04/earth-days-best-legacy-the-clean-air-act-is-under-attack/
New policy: Clear skies in New York State
http://www.epa.gov/clearskies/state/ny.html
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