Thursday, April 18, 2013

Freeway air pollution travels farther in early morning

Freeway air pollution travels farther in early morning: Study shows that residential exposure to freeway pollution is more far-reaching than previously believed.

Two years ago researchers outfitted an electric Toyota RAV4 with a set of test instruments and drove back and forth near four Los Angeles County freeways between 4:30 a.m. and 6:30 a.m., sampling the air.