BBC Earth Astro

The best of David Attenborough's early adventures as never seen before - in colour - and with it the story of how the pioneering television series Zoo Quest was made.

Renowned wildlife film-maker Gordon Buchanan gets close to wild cheetah in the stunning Kalahari, experiencing first-hand the very real dangers these beautiful big cats face.

Firefighters battle through apocalyptic scenes on Australia's Kangaroo Island as it is besieged by deadly bushfires. In Kansas, two hard-core tornado chasers allow a tourist to ride along with them.

Actor Joseph Gordon-Levitt tackles Kenya's unyielding terrain with Bear Grylls. Dropped into the elements from a helicopter, Joseph and Bear navigate a perilous rappel and milk a camel.

Sue reaches the final episode with a visit to the country's heady and exotic capital, Bangkok.

The best of David Attenborough's early adventures as never seen before - in colour - and with it the story of how the pioneering television series Zoo Quest was made.

Actress Lena Headey joins Bear on a 48-hour expedition through the steep cliffs and icy waters of Spain's Iberian Peninsula. Can she handle the punishing conditions?

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Actress Lena Headey joins Bear on a 48-hour expedition through the steep cliffs and icy waters of Spain's Iberian Peninsula. Can she handle the punishing conditions?

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Renowned wildlife film-maker Gordon Buchanan gets close to wild cheetah in the stunning Kalahari, experiencing first-hand the very real dangers these beautiful big cats face.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Renowned wildlife film-maker Gordon Buchanan gets close to wild cheetah in the stunning Kalahari, experiencing first-hand the very real dangers these beautiful big cats face.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

What draws humans to the coldest and most hostile reaches of our planet?

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Renowned wildlife film-maker Gordon Buchanan gets close to wild cheetah in the stunning Kalahari, experiencing first-hand the very real dangers these beautiful big cats face.

Actress Lena Headey joins Bear on a 48-hour expedition through the steep cliffs and icy waters of Spain's Iberian Peninsula. Can she handle the punishing conditions?

Simon Reeve crosses the parched desert of southern Africa, tracking wildebeest with the famous hunter gatherers of the Kalahari before heading to the oasis of the Okavango Delta.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Dropped amidst snow capped mountains, Uzo and Bear move quickly as a storm sets in, sending hail, lightning and flash floods their way.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Dropped amidst snow capped mountains, Uzo and Bear move quickly as a storm sets in, sending hail, lightning and flash floods their way.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Dropped amidst snow capped mountains, Uzo and Bear move quickly as a storm sets in, sending hail, lightning and flash floods their way.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Dropped amidst snow capped mountains, Uzo and Bear move quickly as a storm sets in, sending hail, lightning and flash floods their way.

Martin travels to Papua New Guinea and lives amongst the subsistence farmers of the Trobriand Islands. There he plays their favourite game - cricket! Next he visits the volcanic island of New Britain.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

From the Poles to the highest mountain peaks, there are surprising frozen worlds found on every continent - home to unique and remarkable animals.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Dropped amidst snow capped mountains, Uzo and Bear move quickly as a storm sets in, sending hail, lightning and flash floods their way.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Actress Keri Russell joins Bear on an epic journey to the Canary Islands off the coast of Africa. After battling the dangerous, rolling rocks of a massive volcano, the duo descend into a canyon.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Martin explores the Philippines, from Manila's jeepneys and bamboo bikes, Catholic fiestas and family feasts, to remote tribal burials, rice god rituals, meeting chocolate heroes, shamans and witches.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

Actress Keri Russell joins Bear on an epic journey to the Canary Islands off the coast of Africa. After battling the dangerous, rolling rocks of a massive volcano, the duo descend into a canyon.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Martin explores the Philippines, from Manila's jeepneys and bamboo bikes, Catholic fiestas and family feasts, to remote tribal burials, rice god rituals, meeting chocolate heroes, shamans and witches.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

Actress Keri Russell joins Bear on an epic journey to the Canary Islands off the coast of Africa. After battling the dangerous, rolling rocks of a massive volcano, the duo descend into a canyon.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

Actress Keri Russell joins Bear on an epic journey to the Canary Islands off the coast of Africa. After battling the dangerous, rolling rocks of a massive volcano, the duo descend into a canyon.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

Martin explores the Philippines, from Manila's jeepneys and bamboo bikes, Catholic fiestas and family feasts, to remote tribal burials, rice god rituals, meeting chocolate heroes, shamans and witches.

At the top of our planet lies the Arctic Ocean - a shape-shifting world of ice and water, home to unique animals like polar bears, harp seals and bowhead whales.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Actress Keri Russell joins Bear on an epic journey to the Canary Islands off the coast of Africa. After battling the dangerous, rolling rocks of a massive volcano, the duo descend into a canyon.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Martin explores the Philippines, from Manila's jeepneys and bamboo bikes, Catholic fiestas and family feasts, to remote tribal burials, rice god rituals, meeting chocolate heroes, shamans and witches.

Movie star Don Cheadle joins Bear on a 48-hour trek through the unrelenting White Mountains of New England. It's rugged, remote and full of dangerous rivers.

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Movie star Don Cheadle joins Bear on a 48-hour trek through the unrelenting White Mountains of New England. It's rugged, remote and full of dangerous rivers.

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Movie star Don Cheadle joins Bear on a 48-hour trek through the unrelenting White Mountains of New England. It's rugged, remote and full of dangerous rivers.

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

Ben meets Janey, a vet, who took it upon herself to rescue and nurse back to health hundreds of dogs in Sri Lanka.

Movie star Don Cheadle joins Bear on a 48-hour trek through the unrelenting White Mountains of New England. It's rugged, remote and full of dangerous rivers.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

Simon Reeve continues his journey through the Americas. In this fifth leg, Simon travels across Central America from the Caribbean to the Pacific.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

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

We follow Savannah and her four cubs in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness - as they navigate a harsh environment and dangerous wildlife.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Movie star Don Cheadle joins Bear on a 48-hour trek through the unrelenting White Mountains of New England. It's rugged, remote and full of dangerous rivers.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

This episode takes Joanna from North Wales to St Michael's Mount and the West Country, ending in her home town of London.

Bear takes Scott Eastwood climbing treacherous mountains in the Balkans.

As Lucy and her Indigenous team begin their unique 50-day journey into virgin Amazon rainforest, they can hear the whistling of the deadly bushmaster snake...

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

In the Grand Canyon, a massive microburst causes a dangerous deluge of mud and rocks to barrel down on a group of kayakers - leaving them in need of urgent medical assistance. In Iowa, a rare derecho

Bear takes Scott Eastwood climbing treacherous mountains in the Balkans.

As Lucy and her Indigenous team begin their unique 50-day journey into virgin Amazon rainforest, they can hear the whistling of the deadly bushmaster snake...

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

In the Grand Canyon, a massive microburst causes a dangerous deluge of mud and rocks to barrel down on a group of kayakers - leaving them in need of urgent medical assistance. In Iowa, a rare derecho

Bear takes Scott Eastwood climbing treacherous mountains in the Balkans.

As Lucy and her Indigenous team begin their unique 50-day journey into virgin Amazon rainforest, they can hear the whistling of the deadly bushmaster snake...

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

In the Grand Canyon, a massive microburst causes a dangerous deluge of mud and rocks to barrel down on a group of kayakers - leaving them in need of urgent medical assistance. In Iowa, a rare derecho

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

As Lucy and her Indigenous team begin their unique 50-day journey into virgin Amazon rainforest, they can hear the whistling of the deadly bushmaster snake...

Sue reaches the final episode with a visit to the country's heady and exotic capital, Bangkok.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Sue reaches the final episode with a visit to the country's heady and exotic capital, Bangkok.

As Lucy and her Indigenous team begin their unique 50-day journey into virgin Amazon rainforest, they can hear the whistling of the deadly bushmaster snake...

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Sue reaches the final episode with a visit to the country's heady and exotic capital, Bangkok.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Crossing the Pacific, Gordon discovers how a view from above is helping protect hammerhead sharks and giant tortoises, and what it could reveal about the future of our coral reefs.

Alex and Nat meet a new guide, Sithu. Heading north, the team are trying to follow Tim's old road to India's notorious 'Wild West', but Sithu warns of an escalating civil war on the road ahead.

Volcano expert Chris Horsley is still in Iceland to check out Katla, one of Europe's largest and most deadly volcanos, which is overdue an eruption.

The largest of all of Earth's displays stretches across thousands of kilometres in the night sky: the Aurora Borealis. The arctic wilderness of Northern Sweden is one of the best places to see it.

Alaskan residents look to restock their food supplies as spring brings longer days. This season, the hardy residents face fresh threats to their survival.