NEWS
China's extreme smog
Updated Oct. 21, 2013, 10:45 a.m. ET

A policeman gestures as he works on a street in heavy smog in Harbin, northeast China's Heilongjiang province, on Oct. 21, 2013.
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Choking clouds of pollution blanketed Harbin, China, which is famed for its annual ice festival, reports said, cutting visibility to 33 feet and underscoring the nation's environmental challenges.
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A woman wearing a face mask walks in heavy smog in Harbin.
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