
Steve Backshall's Extreme River Challenge
Steve Backshall sets out to explore one of the wildest rivers in the world.

Steve Backshall sets out to explore one of the wildest rivers in the world.

Bear Grylls' journey takes him from the deepest point in Britain to its highest mountain.

Bear reveals the tropical past of the Yorkshire Dales while rappelling at Malham Cove.

Bear embarks on an exciting journey across Snowdonia; he comes face to face with a new born seal.

A documentary telling the story of the world's craziest race, the 9000 km Paris-Dakar rally.

Steve and the climbing team continue up the sheer-sided face of a remote tepui.

Jonny and Wookie lead teams in creating the ultimate survival vehicle from a Pontiac Aztec.

Shaken and stirred. The teams build their visions of the ultimate spy car.

Steve attempts an ascent of a wall on a remote tepui to search for wildlife.

The teams build their versions of the ultimate off-road vehicle from regular cars.

As a storm front approaches, Steve must make decisions in a race against time.

Brian explores one of the greatest mysteries in physics: time.

Steve takes on one of the deadliest mountain climbs in the world.

Brian takes a fresh look at the astonishing concept of gravity.

Steve and his crew kayak Baliem's lower gorge - one of the most extreme rivers.

Brian Cox explains why the search for alien life should be taken seriously.

Steve Backshall sets out to explore one of the wildest rivers in the world.

Brian questions how far humans will go in their exploration of the cosmos.

The remote Xavante tribe in Brazil teaches Joel how to work through the pain barrier.

Bear Grylls' journey takes him from the deepest point in Britain to its highest mountain.