Over the past 26 years, 16 expeditions have tried and failed to climb one of Pakistan's 8,000 meter peaks in winter. In 2011, Simone Moro, Denis Urubko and Cory Richards became the first. The journey nearly killed them.
Welcome to the wildest competition known to man -- the speed record on the Nose route of El Capitan. Yosemite legends Dean Potter and Hans Florine go head-to-head, racing up 3,000 feet of vertical rock in under three hours, risking life and limb.