BBC Earth

David Attenborough travels from the Arctic to the Antarctic to discover magical new ice worlds inhabited by the most extraordinary animal survivors on earth.

Human survival in polar areas relies on ancient wisdom and modern science; a look at the riches and wonders of the polar regions and the people that have been visiting them for thousands of years.

Levison takes in the scenery in northern Pakistan's mountain valleys.

Levison reunites with his old friend Binod Parya who once saved his life.

The dangerous journey of the Pachyrhinosaurus, where survival is at stake during the annual migration hundreds of miles north.

Levison takes in the scenery in northern Pakistan's mountain valleys.

Levison reunites with his old friend Binod Parya who once saved his life.

The dangerous journey of the Pachyrhinosaurus, where survival is at stake during the annual migration hundreds of miles north.

Alaskans push through the deep cold to increase their odds of survival.

Examine strange relics forgotten by time; visit a perturbing circle of stone in the Golan Heights; a mountain of headless statues in Turkey; a castle left to crumble in the Saudi Arabian desert; a time-worn secret in the wilds of Peru.

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical Humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

Alaskans push through the deep cold to increase their odds of survival.

The first fawn of the year arrives at the rehab centre; two volunteers plan to make rehab a lifelong commitment.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

The first fawn of the year arrives at the rehab centre; two volunteers plan to make rehab a lifelong commitment.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

After being raised on the ice in winter, emperor penguin chicks find themselves abandoned by their parents in spring; to survive, they must find their own way across the treacherous sea ice to the rich waters of the Southern Ocean.

At the top of the planet lies the Arctic Ocean; after four months of winter darkness, the sun returns to reveal a frozen ocean covered in ice; mother polar bears emerge from their hillside dens and lead their cubs down to the sea ice to hunt.

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

Trekking across the planet's most hostile frozen zone: Antarctica; getting to know ice.

Going back to the far North of the planet where the largest land habitat on Earth exists, home to great Boreal forests and the barren tundra.

Coming face to face with the scientists bearing witness to history's profound climate shift; pondering the effect these changes have on Earth's human and animal communities, mapping the destruction from space and learning how to save the planet.

A team of forensic experts excavate a giant Pliosaur skull, the largest Jurassic predator ever known.

After being raised on the ice in winter, emperor penguin chicks find themselves abandoned by their parents in spring; to survive, they must find their own way across the treacherous sea ice to the rich waters of the Southern Ocean.

Ann Jones heads to Rosemary Island, WA to join turtle scientists on their annual nest survey; it's hot work, but worth it, females laying eggs; flatback hatchlings and she even wrestles a green turtle.

Steve searches for deadly animals living in the capital of Suriname, from snakes in people's gardens to snail-catching kites and one of the deadliest snakes on earth.

The trio heads to South Africa where they encounter the great white shark.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

Ann Jones heads to Rosemary Island, WA to join turtle scientists on their annual nest survey; it's hot work, but worth it, females laying eggs; flatback hatchlings and she even wrestles a green turtle.

Steve searches for deadly animals living in the capital of Suriname, from snakes in people's gardens to snail-catching kites and one of the deadliest snakes on earth.

The trio heads to South Africa where they encounter the great white shark.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Alaskans stand their ground as winter brings one final barrage.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

The male penguins hand over their newborns to the returning females.

Alaskans stand their ground as winter brings one final barrage.

Learning the secret of rehabilitating seals from experts at Vancouver Aquarium; search and rescue is launched.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

Learning the secret of rehabilitating seals from experts at Vancouver Aquarium; search and rescue is launched.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

An epic journey into the unknown, a realm that feels almost like science fiction.

Coral Reefs are vibrant undersea cities where life has found ways to survive.

The big blue is the world's greatest wilderness, far from shore and many kilometers deep.

From forests to undersea prairies, it is the green of the sea that brings life to oceans.

Coasts are the most changeable habitats of the ocean world.

Pioneers strive to protect the ocean from the effects of human activity.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

Prince William, along with members of the Earthshot Prize Council, including Sir David Attenborough and former Japanese astronaut Naoko Yamazaki, uncovers personal stories of people affected by air pollution and of those determined to clean our air.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

Prince William, along with members of the Earthshot Prize Council, including Sir David Attenborough and former Japanese astronaut Naoko Yamazaki, uncovers personal stories of people affected by air pollution and of those determined to clean our air.

Sir David Attenborough reveals new animal behaviors in the ocean.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

Alaskans brave the awakening landscape as the end of Winter nears.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

After tough early months, the penguin chicks are becoming more independent and are often left behind as their parents fish; follow along as they leave the security of home to return many years later to the same spot to breed.

Alaskans brave the awakening landscape as the end of Winter nears.

Hope recruits an unlikely wildlife rescuer.

Iceland is the world's largest volcanic island and new ground is born daily.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Hope recruits an unlikely wildlife rescuer.

Iceland is the world's largest volcanic island and new ground is born daily.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Remote islands offer sanctuary; pygmy three-toed sloth resides on a Caribbean island; nesting albatross thrive in isolation.

The secretive lives of mountain animals; snow leopards come together to help a mother and cub, trapped between rival males.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

The hostile conditions of Earth's desert regions give rise to the most incredible survival stories on Earth.

Grasslands cover one quarter of all land and support the greatest gatherings of wildlife on Earth, but hostile seasons pose a survival risk.

Cities serve as places of surprising opportunity for animals to thrive.

Scientists uncover clues at a fossil dig site in North Dakota that reveal details about the day an asteroid struck Earth and wiped out the dinosaurs.

Exploring fossils from a North Dakota site that may reveal what happened when an asteroid struck Earth and wiped out the dinosaurs.

As winter turns to spring, Alaskans must seize the warming days.

Around 12,000 years ago, as the Ice Age finally thaws, humanity makes a dramatic shift - abandoning nomadic life for permanent settlements.

Levison travels into east Greenland's vast Arctic wilderness in search of elusive polar bears; he learns about the lives of these apex predators and their environment.

As winter turns to spring, Alaskans must seize the warming days.

Around 12,000 years ago, as the Ice Age finally thaws, humanity makes a dramatic shift - abandoning nomadic life for permanent settlements.