BBC Earth HD

Michael Portillo looks at how railways gave birth to modern tourism, as the first railway companies were quick to spot a business opportunity.

Two thousand years in the making. The Great Wall of China was built with the blood and toil of millions of workers, but this one type of engineering has shaped the world for at least 12000 years.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

Sue is out to hunt caribou. Ricko travels to a natural hot spring. Jessie moves to Brushkana. The Hailstones build a wall tent and go fishing.

As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

As Alaskans enter a new dawn in the Arctic winter, they must adapt to the changing landscape if they are to survive.

The Great Pyramid of Giza is the oldest of the Seven Wonders of the World.

Michael Portillo looks at how railways gave birth to modern tourism, as the first railway companies were quick to spot a business opportunity.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

Sue is out to hunt caribou. Ricko travels to a natural hot spring. Jessie moves to Brushkana. The Hailstones build a wall tent and go fishing.

As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

As Alaskans enter a new dawn in the Arctic winter, they must adapt to the changing landscape if they are to survive.

The Great Pyramid of Giza is the oldest of the Seven Wonders of the World.

Michael Portillo looks at how railways gave birth to modern tourism, as the first railway companies were quick to spot a business opportunity.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

Two thousand years in the making. The Great Wall of China was built with the blood and toil of millions of workers, but this one type of engineering has shaped the world for at least 12000 years.

Sue secures her camp before a long trip. Ricko helps repair his uncle's cabin. Jessie competes in a sled dog race. The Hailstones prepare for an intense storm.

Ben joins coconut farmer Neil and his young family in their hillside bamboo house, where Neil is apparently the only white man in his jungle village.

Michael Portillo looks at how railways gave birth to modern tourism, as the first railway companies were quick to spot a business opportunity.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

As Alaskans enter a new dawn in the Arctic winter, they must adapt to the changing landscape if they are to survive.

In 2011, the earthquake that struck New Zealand's South Island became the nation's fifth-deadliest disaster.

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

Sue repairs her cabin in Chena. The DeWildes set a net. Jessie spends time with his young dogs. Chip receives medical attention after an accident.

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

The dig continues and the all-Italian team of archaeologists discover the remains of a horse harness. As they cannot find any remains of the horse they wonder if it managed to escape Pompeii as the eruption began.

Discovering how the Galapagos became one of the most important areas of biodiversity in the world.

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.

The Great Pyramid of Giza is the oldest of the Seven Wonders of the World.

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.

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.

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.

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.

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 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.

It is time for a competitive BioBlitz as the team splits into two to see which can find the most species against the clock.

Steve wants to introduce the team to the bull shark.

Sue repairs her cabin in Chena. The DeWildes set a net. Jessie spends time with his young dogs. Chip receives medical attention after an accident.

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.