A motorcyclist in Los Angeles prepares to turn while driving along a street engulfed in a thick haze combined by fog and smog in 1958.Bettmann / Getty For much of its history, the city of stars could ...

The Los Angeles-Long Beach ranked as the nation's smoggiest region in a report released on Wednesday by the American Lung Association, which also faulted the region for short-term and year-round ...

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The Port of Los Angeles must significantly improve its management of stormwater and groundwater to ensure that toxic pollutants stay out of the harbor, according to a tentative settlement on Wednesday ...

5 Freeway north of LA is the focus of an updated air quality alert reported at 5:03 p.m. on Wednesday by the National Weather Service. The alert is in effect until Thursday July 10, at 8:15 p.m. “The ...

Add Yahoo as a preferred source to see more of our stories on Google. Los Angeles has struggled with air pollution problems since before smog became a term. In 1943, smog covered the city so thickly ...

Los Angeles has struggled with air pollution problems since before smog became a term. In 1943, smog covered the city so thickly that residents thought they were under a chemical attack. The creation ...