BBC Earth HD

China's Three Gorges Dam is the largest and heaviest concrete structure on earth.

From the barren Australian outback to the remote, dry deserts of Namibia, mammals use their ingenuity, incredible intelligence and remarkable resilience to beat the heat.

Ben travels to northern Norway inside the artic circle to catch up with Randi after five years. Randi has expanded her small holding and is now a crucial member of the local community.

Sue hunts waterfowl. Andy and Denise fight the river breakup. Ricko and his kids hunt geese. The Hailstones hunt small game.

Alice Roberts is on a train to Ankara on her Ottoman adventure. She visits the tomb of Ataturk who saw out the end of the empire.

Joe Swash and Seann Walsh are no strangers to jungles after appearing on I'm A Celebrity..., but neither of them has sought an ancient Mayan temple in Guatemala before.

China's Three Gorges Dam is the largest and heaviest concrete structure on earth.

Alice Roberts begins her Ottoman adventure in Adana, near Syria.?She explores an historic mosque and finds out about the origins of Turkish delight.

As winter comes to an end, Alaskans journey, hunt, and prepare for spring.

Ben journeys into Zambia to live with a British family who have built a safari lodge on the edge of a national park. Ben uncovers what motivates them to keep going.

Joe Swash and Seann Walsh are no strangers to jungles after appearing on I'm A Celebrity..., but neither of them has sought an ancient Mayan temple in Guatemala before.

From the barren Australian outback to the remote, dry deserts of Namibia, mammals use their ingenuity, incredible intelligence and remarkable resilience to beat the heat.

Entering The Balkans by sleeper train, Alice Roberts is in Bulgaria's capital Sofia. She'll learn how the empire was controlled from Istanbul and how today the landscape today is almost entirely Soviet.

Mike Wozniak and Ola Labib head to one of the wildest places on Earth - the Namib desert - to meet for the first time and have each other for company on their journey.

On this final leg of his journey, Ben encounters the mighty Congo River for the first time. A trade super-highway.

The Arctic Vets team do whatever it takes to save the lives of sick animals.

After a week in deepest Turkey, Alice Roberts finally arrives in Istanbul to learn about how the clever Ottoman tactics required to wrestle the city from the Romans.

Alaskans contend with the throes of the warm season.

Ben travels to Dorset to live for a week with Chris, a former paratrooper who has spent the last five years walking Britain's coastline, finding love and raising thousands for charity.

Mike Wozniak and Ola Labib head to one of the wildest places on Earth - the Namib desert - to meet for the first time and have each other for company on their journey.

On this final leg of his journey, Ben encounters the mighty Congo River for the first time. A trade super-highway.

Ben journeys to the Ozark National Forest, to live with master craftsman Robert.

Sue fixes her Nodwell. Andy and Denise install solar panels. Jessie repairs his boat. The Hailstones go fishing.

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.

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

Alaskans harness the power of the sun as they toil through summer.

Reza explores the possibility of human habitation in an impenetrable canyon system in Oman.

Following Odysseus' trail, Bettany takes a predawn trip to Delos, then sets sail to Ikaria.

The drama now centres around the river where enchanting new characters, such as an adorable baby hippo, meet old favourites. Bonds of kinship are tested as adventures continue.

David Harewood and best friend Fraser James swap the sets of Hollywood for a new challenge in Slovenia where they face some of the most dangerous roads in Europe.

Entering The Balkans by sleeper train, Alice Roberts is in Bulgaria's capital Sofia. She'll learn how the empire was controlled from Istanbul and how today the landscape today is almost entirely Soviet.

Bettany heads to Santorini, the site of one of the biggest volcanic eruptions in history, before heading over to Naxos and then Siphos.

Hannah Fry reveals the miraculous technologies that define the modern world.

Ben travels to New Zealand's North Island, where he meets a young nomadic family led by Amber and Andy, who spend their life exploring the country's wild landscapes.

Sue cleans up her river and goes fishing. Andy and Denise repair a Jeep. Jessie falls trees and prepares wood. The Hailstones build a trapping cabin.

In her final chapter, Alice Roberts takes a train to the western point of the Ottoman Empire, Budapest to learn how it ended.

David Harewood and best friend Fraser James swap the sets of Hollywood for a new challenge in Slovenia where they face some of the most dangerous roads in Europe.