The deadly smog that hovered over London claimed more lives than one could imagine. Over five days, nearly 4,000 people perished. Still, this is not the full extent of the catastrophe that's ...

A London policeman wearing a mask for protection against the thick fog which hit most of the country and turned to smog in the city on Jan. 1, 1962. (Photo by Keystone/Getty Images) London's poor ...

which was different from the sulfurous smog that claimed lives in Donora, Pa., and London, England. In those places, the culprit was the burning of coal, but there was very little of that in Los ...