Severe Air Pollution Continuous In Beijing

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A man walks out a subway station during severe pollution on January... News PhotoAdult,Beijing,China - East Asia,Environmental Damage,Environmental Issues,Horizontal,Men,Pollution,Serious,Station,Subway,Subway Station,WalkingPhotographer Collection: Getty Images News 2013 Getty ImagesBEIJING, CHINA - JANUARY 30: A man walks out a subway station during severe pollution on January 30, 2013 in Beijing, China. The fourth round of heavy smog to hit Beijing in one month has sent more people to the hospital with respiratory illnesses and prompted calls for legislation to curb pollution. The haze choking many Chinese cities covers a total area of 1.3 million square kilometers, the China's Ministry of Environmental Protection said Tuesday. (Photo by Feng Li/Getty Images)