But it can also be deadly in a different way. Beginning on December 5, 1952, 72 years ago today, a cloak of dense fog descended upon London. It became so dense, at times, that it was challenging ...

This year London skies were clear even during November, usually the foggiest month. The fog crept to its peak in 1952, when Londoners learned a hard lesson: if there was romance and mystery in the ...

but these are factory chimneys poking through the smog in the East End in 1952 The Industrial Revolution of the 18th Century helped create the infamous London smog, which escalated as more and ...

"Fog Service in Force" notice to be seen at Paddington Station in London in 1952. (Photo by Hulton Archive/Getty Images) The Clean Air Act of 1956 called for homeowners and factories to convert to ...