Clearing the air on measuring pollution
By Peng Yining, Wu Wencong and Hu Yongqi | China Daily | Updated: 2012-06-13 08:06
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A masked Shen Yanwei gets a helping hand from his grandfather as they play on the banks of the Yangtze River in Wuhan, Hubei province, on Monday. Haze caused by farmers burning straw blanketed Wuhan and other cities. Zhou Guoqiang / for China Daily |
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