A woman walks with her child on a street as schools were closed due to the heavy smog in Jilin, northeast China’s Jilin province on October 22, 2013. Thick smog enveloped China’s northeast area for a third day on October 22. CHINA OUT AFP PHOTOSTR/AFP/Getty Images

A woman walks with her child on a street as schools were closed due to the heavy smog in Jilin, northeast China’s Jilin province on October 22, 2013. Thick smog enveloped China’s northeast area for a third day on October 22. CHINA OUT AFP PHOTOSTR/AFP/Getty Images

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