A man pushes a bike onto a bridge during a day of heavy pollution in Harbin in northeast China's Heilongjiang province Monday Oct. 21, 2013. Visibility shrank to less than half a football field and ... more 
A man pushes a bike onto a bridge during a day of heavy pollution in Harbin in northeast China's Heilongjiang province Monday Oct. 21, 2013. Visibility shrank to less than half a football field and small-particle pollution soared to a record 40 times higher than an international safety standard in the northern Chinese city as the region entered its high-smog season. (AP Photo) less 
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Associated Press | Photo By AP Photo
Mon, Oct 21, 2013 11:00 AM EDT