Metcalfe, a 50-year-old doctor from Colorado, recently became the first American woman to ascend all 14 mountains above 8,000 ...

Uncover China's landmarks, from the majestic Great Wall to the breathtaking Yangtze River - 4000 years of history and culture ...

Netflix flexes documentary muscle with eight projects in the running for an Oscar, but National Geo, others have strong ...