Even Healthy Lungs Labor At Acceptable Ozone Levels

Even Healthy Lungs Labor At Acceptable Ozone Levels
http://www.sciencedaily.com/releases/2009/07/090723175500.htm?tr=y&auid=5136619

"Ozone exposure, even at levels deemed safe by current clean air standards, can have a significant and negative effect on lung function, according to researchers at the University of California Davis."