24 cities in China on red air pollution alert, 21 on orange

24 cities in China on red air pollution alert, 21 on orange

China's environmental authorities have placed 24 cities on red pollution alert, strengthening inspections and enforcements to fight air pollution violations. According to the China.org.cn, the smog prompted 24 cities including Shijiazhuang and Baoding in Hebei…

London’s 1952 killer fog mystery solved

London’s 1952 killer fog mystery solved

A new study finally revealed the exact cause of the 1952 killer fog which hovered over London for several days. The fog contained large amounts of pollutants which caused widespread breathing problems and killed thousands of city residents. The fog covered London…