The Los Angeles metropolitan area still ranks first in the country for smog with an average of more than 140 days of dangerous ozone levels a year, according to the American Lung Association's annual State of the Air report. There's a silver lining in the dirty clouds, though, as the number of high-ozone days in metro L.A. has dropped by 25 percent since 2000. What are the health effects of these high pollution levels, and what can be done to clear the air?
Guest:
Jane Warner, President and CEO of the American Lung Association in California