China's toxic smog - BBC News
China smog: Environmental police to punish polluters
The Devastating Effects of Pollution in China (Part 1/2)
Toxic smog hangs over large swath of China
China's toxic smog problem
China's toxic smog causing concerns in Korea
Another cloud of toxic smog to blanket Beijing from Monday
Air quality in China: Pollution levels down by 42% over the past ten years • FRANCE 24 English
Surviving China's smog
Toxic smog from China to cover the capital area _032318
China smog: 'Sky dark from air pollution' - BBC News
China's smog now 20 times worse than safe levels
China's smog problem affects world
Climate crisis: Smog in China is 20 times the safe level
China's super smog: Gov't official calls Beijing pollution "unbearable"
Heavy Smog Brings Travel Chaos to China
Toxic smog from China and stagnant air flow boost dust levels _ 011818
China's Toxic Smog Years in the Making
Severe smog leaves China breathless
China's 'smog refugees' flee capital for clean air