Tom Frederic

Three adventurers set out on an expedition across the remarkable landscapes of Greenland. Crossing the Greenland ice cap by kite ski is epic, and making a first descent of a river draining that ice cap is landmark, but accessing that river by towing a kayak across the ice cap to the river's headwaters to kayak down to the Arctic Ocean is unprecedented.

Adventurers Olly Hicks and George Bullard undertake an extraordinary sea voyage, paddling from Greenland to Scotland in a sea kayak.

Professional ice climber Will Gadd and his team attempt the treacherous climb up the toughest mixed ice route in the world: Helmcken Falls in British Columbia, Canada.

Annelie Pompe embarks on a mission to scale the heights of Mount Everest and freedive to the lowest recorded depth of the ocean, an achievement that would see her reach the greatest heights and depths.

Liz Rogers is Australia's most awarded cave-dive photographer, and she has found her own virgin caves to explore in West Timor, Indonesia.

Set against the backdrop of breathtaking Patagonia, David Lama sets out to climb the infamous south-east face of Cerro Torre, an Argentinean mountain.