Lingering fog traps heavy pollution in Beijing
Xinhua, February 24, 2011
Heavy fog persisted in Beijing for three days. [CFP]
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![Heavy fog persisted in Beijing for three days. [CFP]](http://images.china.cn/attachement/jpg/site1007/20110224/00016c8b649f0ed039e202.jpg "Heavy fog persisted in Beijing for three days. [CFP]")