Breathing air is a necessity of life.  We cannot live without air.  But new 
research from the University of Michigan shows that a breath of fresh air 
comes at the price of increased risk of cardiovascular disease.
Particulate matter air pollution is the 13th leading cause of morality.  Air 
pollution has been associated with numerous cardiovascular diseases, heart 
failure, and stroke.
PDF Version: http://mcs-america.org/October2008pg40.pdf