DISCOVERY HD WORLD

Actor Jake Gyllenhaal assists Bear in showcasing survival techniques in Iceland.

In Patagonia, Bear skins a hare, scales a cliff, tracks a puma, drinks dirty water and crosses the Perito Moreno Glacier, a labyrinth of ice caves and crevasses.

In Patagonia, Bear skins a hare, scales a cliff, tracks a puma, drinks dirty water and crosses the Perito Moreno Glacier, a labyrinth of ice caves and crevasses.

Bear Grylls embarks on an adventure to the Mojave Desert and conquers the sandstorm in scorching heat. Later, the brave survival specialist is on a quest to find scorpions, rattlesnakes and coyotes.

Bear skydives into Australia's Northern Territory. He will rely on the survival skills honed by the aboriginal people to survive in this sweltering landscape.

Bear travels to America's greatest mountain range-the Sierra Nevada. He uses his knowledge of American Indian survival techniques to build shelters, calm wild horses, and find food.

Observers provide a primary account of natural disasters by capturing terrifying moments and recording the instances of destruction.

Bear Grylls has served with the British Special forces, climbed to the peak of Everest and explored the frozen ocean of the Arctic. Now he faces the punishing heat of the Moab desert in Utah.

Bear Grylls draws upon all his experience as a survivor to tackle the dangers of the Costa Rican rainforest, climbing 100 ft trees and down 120 ft waterfalls, facing snakes and sweltering humidity.

Rick Harrison and his family own and run a pawn shop in Las Vegas. They purchase, sell and evaluate interesting artefacts with fascinating stories.

Bear Grylls' next challenging adventure is in Hell's Canyon, Oregon.

Ed travels to different regions where he undergoes rigorous tribal rites of passage. Embedding himself in six distinct cultures while exploring how these ancient feats define modern community.