Edge of the Unknown with Jimmy Chin

Jimmy Chin takes a look inside the minds of adventure athletes who share stories of confronting fear, loss and Mother Nature at her harshest and elaborate on the mental and physical strength required.

Sarah McNair Landry and her brother Eric share their story of kite-skiing the Northwest Passage in winter only to be 'hunted' by polar bears.

Jimmy Chin takes a look inside the minds of adventure athletes who share stories of confronting fear, loss and Mother Nature at her harshest and elaborate on the mental and physical strength required.

Professional whitewater kayaker Gerd Serrasolses was filming in Chiapas, Mexico, when he nearly drowned running a 50-foot waterfall. Knocked unconscious, he survived three and a half minutes underwater and was revived by his teammates.

Big wave surfer Justine Dupont prepares to ride some of the biggest waves of her life. But to achieve that she has to face down fear and intense risk.

On a climb close to home, Jimmy Chin, was caught in a massive class four avalanche. How did he survive, and how did it change him?

When attempting a first ascent on the tallest unclimbed peak in the Himalayas, legendary climber Conrad Anker has a heart attack at 20,000 feet.

While filming for a sports movie, skier Angel Collinson falls from a 1000-ft mountain in one of the steepest spines of Alaska.

Mountain athlete Will Gadd was attempting a first ascent of the 430-foot frozen waterfall Helmcken Falls in British Columbia.

In his journey to climb Yosemite's El Cap without a rope, alpinist Alex Honnold goes to Morocco and uses its biggest walls as his training ground.