Struggling for breath in Baltimore

It?s springtime in Baltimore: Orioles season opener, picnics, charity bike rides and struggling for every breath.

The return of warm weather also portends more trips to the hospital and emergency room, say Baltimore officials charged with helping residents breathe easier. Their battle is uphill, though, in a city ranked 11th out of 25 major metropolitan areas by the American Lung Association for both peak pollution levels and ozone smog.