32 vintage photos reveal what Los Angeles looked like before the US regulated pollution

Source: Business Insider

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 / GettyLos 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.