Pea soup fog was a phrase used to denote air pollution that occurred in 19th century to mid 20th century in London. The source of London's pollution was the burning of coal for power.
Coal-generated power creates air-born particulates (soot, smoke, sulfur dioxide and other components). Coal-fired pollution has been a concern in London since the middle ages. King Edward I briefly banned coal fires in 1306.
“Always try to keep a patch of sky above your life.”
― Marcel Proust, Swann's Way
October 21, 2013
Harbin, a city in China with more than 10 million people, was recently shut down because of high levels of pollution. The city's Air Quality Index (AQI) spiked to 500. For comparison, an AQI of 300 is deemed hazardous to human heath.
An estimated 1.2 million Chinese people die from air pollution every year.
The sky is the daily bread of the eyes.
― Ralph Waldo Emerson
- Beijing smog continues as Chinese state media urge more action, The Guardian, January 14, 2013.
- NASA Earth Observatory.
- Smog, Wikipedia.
- Smog Shuts China City, Chinese Fume. PBS NewsHour, October 22, 2013.