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The "Great Smog of London" began and lasted for five days, causing 12,000 deaths and leading to the Clean Air Act 1956.
Related Wikipedia articles
Great Smog of London
1952 air pollution event
The Great Smog of London, or Great Smog of 1952, was a severe air pollution event that affected London, England, in December 1952. A period of unusually cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants—mostly arising from the use…Source: Wikipedia (CC BY-SA)
Clean Air Act 1956
Act of the Parliament of the United Kingdom
The Clean Air Act 1956 was an Act of the Parliament of the United Kingdom enacted principally in response to London's Great Smog of 1952. It was sponsored by the Ministry of Housing and Local Government in England and the Department of Health for Scotland, and was in effect…Source: Wikipedia (CC BY-SA)