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Return of the killer smog

(chinadaily.com.cn/Agencies) Updated: 2013-01-29 15:45
Return of the killer smog

People do exercises outdoor on a hazy day at the Temple of Heaven in Beijing, Jan 28, 2013. Beijing's air pollution returns to 'hazardous' levels, two weeks after record readings of small particles in the air sparks a public outcry. [Photo/Agencies]

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