BBC Earth HD

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

When spring finally arrives in Alaska, the landscape and waterways come back to life with a vengeance as the snow and ice melt.

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.

We're celebrating Italy and following the Neapolitan Line. Travelling west from the gelato shops of the seaside town of Pescara, we cross Italy through the wild Apennine Mountains.

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.

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

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

Sue expands her garden. Andy and Denise hunt waterfowl. Ricko teaches his kids to hunt. The Hailstones go on an egg hunt.

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.

We're celebrating Italy and following the Neapolitan Line. Travelling west from the gelato shops of the seaside town of Pescara, we cross Italy through the wild Apennine Mountains.

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.

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

When spring finally arrives in Alaska, the landscape and waterways come back to life with a vengeance as the snow and ice melt.

Robson and Jim are in Scotland - they first try the River Deveron before heading to the most famous river of them all: the Spey.

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

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

Episode one of Sue Perkins' Lost In Thailand opens in magnificent Northern Thailand where Sue explores the breath-taking beauty of the Thai Highlands.

The first leg of Anton and Giovanni's Sicilian road trip begins in the port town of Sciacca. From there, it takes in Greek architecture, octopus fishing and a tango festival.

A ground-breaking journey from tropical shallow seas to the mysterious depths, Attenborough reveals extraordinary new worlds and unique animal behaviours in the ocean.

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.

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

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.

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.

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.

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.

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.

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.

In the final episode, Steve looks back at his top Deadly Predators from the series and meets the ultimate predator.

Intrepid Nick Knowles begins his latest adventure by clinging to a rock in the Andes mountains and meeting indigenous people.

The second part of Nick Knowles' exhilarating South American adventure is set in the beautiful Chilean Lake District.

Nick reaches Argentina, the land of gauchos, Evita, passion and surprisingly, Welsh people. Nick first attempts to master Argentina's most beloved sport, polo.

The invention of railways coincided with the period of European colonisation. A look at how the Europeans used railways to further their imperial ambitions in other parts of the world.

The world's deserts are lands of extremes that force animals to adapt in clever ways to cope with the hostile conditions, producing some incredible survival stories.

Grasslands cover a quarter of all land and support vast gatherings of wildlife - but to survive here animals must endure the most hostile seasonal changes on Earth.

Michael continues his exploration of Thailand by rail, steered by his 1913 Bradshaw's guide. First, he steps into the ring under the guidance of champion trainer, Master Toddy, to learn Muay Thai boxing.

Pulled by a gleaming Siemens Charger locomotive, our double-decked coaches will take us on a 350-mile trip into the Californian dream. On our way we'll stop off in Carlsbad.

Travelling through the Peak District at full steam, pulled by the Royal Scot - one of the finest locomotives ever built.

From a vineyard that has been making one of Britain's favourite tipples - Port - travel down the line that once transported it to the city that gave it its name: Porto.

Lion numbers continue to grow, but there's not enough food to go around. A lioness mum risks her life to feed her five cubs. And Xudum's new-born leopard cubs face a deadly threat.

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.

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.

The first leg of Anton and Giovanni's Sicilian road trip begins in the port town of Sciacca. From there, it takes in Greek architecture, octopus fishing and a tango festival.

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

With the waterways open, Alaskans navigate the rivers for reconnaissance and resources. Andy Bassich and Denise Becker must endure a grueling process of launching their boats for a critical hunt.

Hannah Fry uncovers the secrets behind the miraculous technologies of the modern world.

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 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.