Olympians of the Sky

Climbers struggling the last few steps to the peak of Makalu in the Himalayas have long marveled at the sight of bar-headed geese flying high above to their winter refuge in India. The birds cruise at an altitude of 29,500 feet, nearly as high as commercial aircraft. For years scientists believed that strong tailwinds and updrafts aided the geese on their journey

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Olympians of the Sky