BBC Earth HD

The second leg of Anton and Giovanni's trip takes them to Mount Etna, Europe's most active volcano, where they are joined by 2021 Strictly champion Rose Ayling-Ellis.

In the planet's most densely populated continent, animals live at extremely close quarters with people, from tigers making a home in town to elephants stopping traffic for food.

The purpose of the sphinx has puzzled experts for decades, but new evidence could clarify its role in ancient Egypt and unlock its dark secrets.

Travelling to Arran and Holy Isle, Ben Fogle learns how they're a haven for diverse faiths and beliefs, makes Jewish challah bread and visits a Buddhist peace centre.

Paddy McGuinness, Cherry Healey and Ruth Goodman get exclusive access to some of the largest factories in the world to reveal the secrets behind the epic-scale production of our favourite products.

How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder.

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

Ben spends time with 40-year-old French-Canadian Julien, on the Thai border with Myanmar.

Starting from one of the world's most remote cities, Walvis Bay, in Namibia, we roll 1,500 miles through the Kalahari desert to Pretoria, South Africa's Executive Capital.

Sue heads south to the turquoise waters of Phuket. She learns how destructive humans can be to the fragile coral reefs.

On Great Blasket Island, off the coast of Ireland, Ben stays with London couple Dan and Emily, who landed an extraordinary job as island caretakers on Europe's rugged western frontier.

Alaskans contend with the throes of the warm season.

The second leg of Anton and Giovanni's trip takes them to Mount Etna, Europe's most active volcano, where they are joined by 2021 Strictly champion Rose Ayling-Ellis.

Ben joins adventurer Randi, who was the first Norwegian woman to climb Everest.

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.

Robson and Jim pull out all of the stops looking for bars of silver as they travel from source to sea on Robson's home river of the Tyne.

In the planet's most densely populated continent, animals live at extremely close quarters with people, from tigers making a home in town to elephants stopping traffic for food.

David Attenborough explores earth's greatest wildernesses, where extraordinary life survives in unexpected ways, and nature puts on its most dramatic show.

Starting a mile above sea level in Colorado's state capital Denver, our train, the Rocky Mountaineer makes its way through the state of Utah.

NASA's cutting-edge Orion spacecraft is the next big thing in space travel. Hear how developers hope the module will aid human exploration of Mars and of asteroids.

Michael Portillo boards Vietnam's spectacular Reunification Railway to make a 1,000-mile journey from Ho Chi Minh City to Hanoi. He visits the container port of Haiphong and finishes in Halong Bay.

In the heart of Asia lie vast arid lands. These deserts and dry grasslands are so hostile, they push life to the limit. The animals that live here are some of the earth's toughest.

Ben meets Niall, who rescues and cares for street dogs in Koh Samui.

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

The Millau Viaduct in South West France is the tallest bridge on the planet.

Starting a mile above sea level in Colorado's state capital Denver, our train, the Rocky Mountaineer makes its way through the state of Utah.