Three National Geographic Adventurers of the Year embark on an unreal ski and kayak mission across Greenland. Using kite skis, they tow their whitewater kayaks over 1,000km of the Greenland ice sheet to reach the most northern river ever paddled.

Explorer Ness Knight attempts to ride her fat bike 1,000km through Namibia’s remote and arid northern region. She faces extreme heat, arduous terrain, and Namibia's deadly wildlife, leaving no room for error on her most ambitious adventure yet.

Torres Strait and Bass Strait are two huge sunken land-bridges off the Australian continent. These dangerous passages haven't been crossed without modern technology in over 6,000 years, but a group of friends will attempt it using only wooden canoes.

Elizabeth Rogers is an award-winning cave dive photographer who doesn't follow anyone's trail. Raised by trailblazers in the sport, she's hungry to make her mark in history by finding her own unexplored caves in West Timor, Indonesia.

The story of an Inuit man who paddled 1,930km between Greenland and Scotland inspires adventurers Olly Hicks and George Bullard to duplicate the journey in a sea kayak. The duo brave extreme oceanic conditions in their quest to test history.

Gavin McClurg and Dave Turner take on the challenge of paragliding across the nearly 700km of the Alaska Range. Facing harsh weather, freezing temperatures and even starvation, it's the most extreme vol-biv expedition ever attempted.