Smog in China

Updated: Feb 25, 2014 18:02 IST

A policeman is seen wearing with a mask in smog-covered Beijing. China's National Meteorological Centre issued a
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A policeman is seen wearing with a mask in smog-covered Beijing. China's National Meteorological Centre issued a "yellow" smog alert for much of the country's north, the fifth consecutive day of heavy pollution. (AFP photo)

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