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Return of the killer smog

(chinadaily.com.cn/Agencies) Updated: 2013-01-29 15:45

Return of the killer smog

A child wearing mask plays at Beijing's Tian'anmen Square, Jan 29, 2013. Beijing's air pollution returns to 'hazardous' levels, two weeks after record readings of small particles in the air sparks a public outcry. [Wang Jing/Asianewsphoto]

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