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China's smog problem affects world
China's toxic smog - BBC News
The Devastating Effects of Pollution in China (Part 1/2)
Air quality in China: Pollution levels down by 42% over the past ten years • FRANCE 24 English
China's smog now 20 times worse than safe levels
Chinese pollution affecting U.S. weather
How an environmental group is trying to clean up China's pollution problem
Inside Story - Choking China
Smog blankets Shanghai | FT World
China's pollution crackdown
World failing to tackle deadly pollution crisis?
China's Dangerous Smog Problem Turning Off Tourists
