BBC Earth HD

Ben Fogle journeys to the foothills of the Indian Himalayas to live with former fighter pilot Steve Lall, who is now a mountain farmer.

Michael examines how railways have shaped the world economy. He recalls how the first tracks were laid to shift coal and iron ore, using animals or winches, long before locomotives were invented.

In this final episode, the archaeologists complete the excavation of a wealthy residence, a bakery, and a laundry and, in doing so, discover evidence of what people were doing in the city during its final hours.

Ben meets a photographer living out his childhood dream. Dan Price gave up his job as a photographer to live the remotest of lifestyles in a meadow in Oregon, USA.

The Hailstones produce an original work of Inupiaq art, and Cole Sturgis ventures into the wilds of the Southeast on a life-or-death hunt.

Killing more people, a year than hurricanes, tornadoes and lightning, floods are one of the most feared disasters with the most traumatic effects.

On an island off the coast of Panama, Ben spends time with Ian Usher, a Briton who 'sold' his life on eBay and bought his own island for £30 000.

Sue continues to restore her cabin. Ricko travels with his son to the family cabin. Jessie gathers firewood. The Hailstones go muskox hunting.

In this final episode, the archaeologists complete the excavation of a wealthy residence, a bakery, and a laundry and, in doing so, discover evidence of what people were doing in the city during its final hours.

Professor Brian Cox explores the solar system's hidden realms, between and beyond the planets, where countless worlds lie hiding in the darkness.

At the far tip of South America, lies a magical realm that seems frozen in time.

Michael Portillo explores how railways have contributed to the creation of countries, linking people across deserts and mountains and binding together different ethnicities and religions.

The 11th Century Norman invasion of Britain saw the constructions of fortresses never seen before. Massive basitions were built to ward off and would-be invaders.

In Varanasi, Bettany takes part in a Hindu ritual which helps her process her own bereavement. She also takes a boat out to the Lake Palace on an island in Lake Pichola.

Bettany enjoys the breath-taking journey through the Tamil Nadu hills, between Mettupalayam and Udhagamandalam (Ooty).

Adventurer Ben Fogle journeys to the mountains of central Portugal, to live with Alex, a British man who traded in his lucrative retail career for his own mountainside hideaway.

Alaskans confront the environment, and themselves, as winter bears down.

Building for God reached a high point in the Middle Ages when a new engineering movement emerged in Europe, using pioneering architecture to create a glimpse of heaven.

Michael Portillo explores how railways have contributed to the creation of countries, linking people across deserts and mountains and binding together different ethnicities and religions.