Days of thick smog leave Shanghai residents gasping for fresh air

Air pollution in China is a serious problem, especially in urban areas in the east like Shanghai. Over the past week, the city has been dealing with a particularity nasty bout of smog that has far exceeded safe levels according to its own Air Quality Index. The smog has been heavy since around the beginning of the month, with one of the worst days on December 6 that saw pollution levels over ten times that of the air in neighboring countries.

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