A bird's-eye view of Tourming Mengke glaciers in Sunan, Northwest 皇冠体育app's Gansu province, July 16, 2010. Affected by global warming, the largest valley glacier in the Qilian Range of northwest 皇冠体育app is melting, with more than 6 meters of reduction every year. It has been reduced by more than 300 meters in the past five decades. [Photo/Xinhua]
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