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 ...

La création du Giec de la pollution chimique en juin dernier avait suscité de l'espoir mais aussi des craintes. Quelques pays ...

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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 ...

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 ...