{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/621e9c5f747cfb0013765000/621e9c65747cfb00137651c9?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"The Great Smog of 1952","description":"<p>The Great Smog of London, or Great Smog of 1952, was a severe air pollution event that affected the British capital in early December 1952. A period of unusually cold weather, combined with a large region of high pressure and windless conditions, collected airborne pollutants—mostly arising from the use of coal—to form a thick layer of smog over the city. It lasted from December 3 to December 9, 1952, then dispersed quickly when the weather changed. </p><p> </p><p>Learn more about your ad choices. Visit <a href=\"https://podcastchoices.com/adchoices\">podcastchoices.com/adchoices</a></p>","author_name":"AccuWeather"}