The Himalayan glaciers that feed many of Asia's most important rivers are receding. The BBC's Chris Morris treks to the face of one of the glaciers that feeds the Ganges to see for himself and assess the possible impact. Growing glacial lakes threaten Nepali villages The rising temperatures are also causing glaciers to melt into rapidly growing lakes. Some of these lakes have unstable dams, which threaten to burst and send billions of gallons of water into villages below. bridges, and hydro power plants. Reporter Yanmei Xie has the story from the southern slope of Mt. Everest.

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