Death Zone: Cleaning Mount Everest

Record of the first ascent of Everest made without the use of oxygen equipment, made in May 1978 by Reinhold Messner and Peter Habeler. Could it be...

Death threats, court battles, and an iconic endangered species in middle, The Trouble With Wolves takes an up close look at the most heated and...

Ueli Steck may be the greatest speed alpinist the world has ever seen. In this film he tells the stories of his record-breaking ascents in the Alps,...

An internal battle is simmering among US Christians over whether climate change is a call to protect the Earth, the work of God to be welcomed, or...

2005. When a trip to New Zealand gets put off, Boone Speed, Chris Sharma, and Nate Gold have 2 weeks to kill and skin to burn. With stories of...

March 12, 1987. The young French mountaineer Eric Escoffier prepares his equipment, very reduced in material and food. He leaves the next day and...

Buddhist monk and photographer Matthieu Picard as he returns to the Asian country in the Himalayas where he spent a decade after seven years away,...

An examination of the extinction threat faced by frogs, which have hopped on Earth for some 250 million years and are a crucial cog in the ecosystem....

Daredevil mountain climbers on their attempt to break yet another speed climbing record.

Dr Helen Czerski delves into the Horizon archive to chart the transformation of a little-known theory into one of the greatest scientific...

Professor Iain Stewart and Professor Kathy Sykes take a timely look at global warming, exploring the world's leading climate scientists' vision of...

Every year, over a thousand climbers try to reach the summit of Mount Everest, with the annual record for successful attempts currently standing at...