A new study has found an association between reductions in fine particulate matter and improved life expectancy in 545 counties in the US from 2000 to 2007.<img src="http://feeds.feedburner.com/~r/sciencedaily/~4/Z4XB9FWy6rA" height="1" width="1"/>
A new study has found an association between reductions in fine particulate matter and improved life expectancy in 545 counties in the US from 2000 to 2007.<img src="http://feeds.feedburner.com/~r/sciencedaily/~4/Z4XB9FWy6rA" height="1" width="1"/>