Edge of the Unknown with Jimmy Chin

Alex Honnold, professional rock climber, who was pushed to his physical and mental limits while climbing the Atlas Mountains of Morocco with his close friend and world-class climber Tommy Caldwell.

Gerd Serrasolses, a kayaker who was knocked unconscious after falling down a 50-foot waterfall while filming in Chiapas, Mexico.

Travis Rice, a big-mountain freeride snowboarder, filmmaker and designer who survived a near-fatal avalanche while riding in the backcountry of Alaska.

Justine Dupont prepares to ride big waves, but she has to face down fear and risk.

Kayaking legends Ben Stookesberry and Chris Korbuic accumulate together hundreds of first descents in the most dangerous rapids in the world; but the Lukuga River, in Congo, has left a particular mark on them.