BBC Earth

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

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Daybi struggles to make amends as the group tackles a grueling paddle on the open ocean; they once again leave little time to erect a shelter finished before nightfall.

As winter winds down, Alaskans encounter roadblocks in their struggle for survival.

Brian learns how Saturn began its life as a strange planet of rock and ice, born outside the snow line, with an abundance of building materials.

Daybi struggles to make amends as the group tackles a grueling paddle on the open ocean; they once again leave little time to erect a shelter finished before nightfall.

Asia's jungles are beautiful and exceptionally diverse, but whilst they provide shelter, food, and opportunity, they are also full of dangers and hidden threats.

As winter winds down, Alaskans encounter roadblocks in their struggle for survival.

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.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

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.

At the onset of winter, Alaskans combat threats; a storm batters Kavik as Sue fortifies camp; Ricko searches for elusive wildlife; the Hailstones ice fish; Johnny secures food in the Brooks Range.

Tells an intimate and enchanting story of an emperor penguin chick's first precarious months on the ice, growing up in the world's most extreme nursery.

Gordon Buchanan begins training the cubs for their new life in the wilderness; with just ten weeks left before release, little Pasha is still struggling.

At the onset of winter, Alaskans combat threats; a storm batters Kavik as Sue fortifies camp; Ricko searches for elusive wildlife; the Hailstones ice fish; Johnny secures food in the Brooks Range.

Tells an intimate and enchanting story of an emperor penguin chick's first precarious months on the ice, growing up in the world's most extreme nursery.

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

As winter winds down, Alaskans encounter roadblocks in their struggle for survival.

Brian learns how Saturn began its life as a strange planet of rock and ice, born outside the snow line, with an abundance of building materials.

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

As winter winds down, Alaskans encounter roadblocks in their struggle for survival.

Hope realizes she's not prepared to rescue animals from an oil spill, so she heads across the continent to learn from the best before disaster strikes.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Hope realizes she's not prepared to rescue animals from an oil spill, so she heads across the continent to learn from the best before disaster strikes.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Everyone is left shocked after an adventurer calls it quits and leaves the journey for good; the remaining five are torn apart, as some look to potentially branch off on their own.

As winter comes to a close, there are no shortcuts for Alaskans as they wrap up the season.

Professor Brian Cox journeys to the remotest part of the solar system where the mysteries of Saturn, Uranus and Neptune remain in the shadows.

Everyone is left shocked after an adventurer calls it quits and leaves the journey for good; the remaining five are torn apart, as some look to potentially branch off on their own.

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.

As winter comes to a close, there are no shortcuts for Alaskans as they wrap up the season.

At the onset of winter, Alaskans combat threats; a storm batters Kavik as Sue fortifies camp; Ricko searches for elusive wildlife; the Hailstones ice fish; Johnny secures food in the Brooks Range.

Tells an intimate and enchanting story of an emperor penguin chick's first precarious months on the ice, growing up in the world's most extreme nursery.

Levison and Alberto travel through Guatemala, Honduras and Nicaragua.

Brian examines the universal laws of nature; planet size can make a difference between life and death.

There are not five separate oceans, but one; its waters linked by powerful forces that keep them on the move.

The same 92 elements that exist on Earth can be found throughout the cosmos.

Brian examines the universal laws of nature; planet size can make a difference between life and death.

There are not five separate oceans, but one; its waters linked by powerful forces that keep them on the move.

The same 92 elements that exist on Earth can be found throughout the cosmos.

As winter comes to a close, there are no shortcuts for Alaskans as they wrap up the season.

Professor Brian Cox journeys to the remotest part of the solar system where the mysteries of Saturn, Uranus and Neptune remain in the shadows.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

As winter comes to a close, there are no shortcuts for Alaskans as they wrap up the season.

Twin fawns arrive at the centre; a volunteer searches for orphans in the woods; Hope tends to a tiny owl.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

When a fawn is found stuck in thick, toxic tar, Hope assembles her entire team to wash and care for it in a desperate bid to save its life.

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

Asia's jungles are beautiful and exceptionally diverse, but whilst they provide shelter, food, and opportunity, they are also full of dangers and hidden threats.

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.

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.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

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.

Tells an intimate and enchanting story of an emperor penguin chick's first precarious months on the ice, growing up in the world's most extreme nursery.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.

Brian takes a fresh look at the astonishing concept of gravity.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.

Brian takes a fresh look at the astonishing concept of gravity.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.

Brian takes a fresh look at the astonishing concept of gravity.

Setting out on an odyssey across the Indian Ocean to see whether the hunters are adapting to the rapidly changing planet; traveling from the coast of South Africa to the Maldives, coming face-to-face with oceanic blacktip sharks.

The same 92 elements that exist on Earth can be found throughout the cosmos.

Lynn plays surrogate to baby beavers; Zach is forced to follow a seal along the coastline; a patient returns after a release goes wrong.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

Meandering through the black waters of a primordial river immortalized in a folk song.

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

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Meandering through the black waters of a primordial river immortalized in a folk song.

Hope realizes she's not prepared to rescue animals from an oil spill, so she heads across the continent to learn from the best before disaster strikes.

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.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

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.

Steve Backshall is in Australia, searching for the world's most freaky and venomous fish: the stonefish; he also finds trapdoor spiders and a snake that hunts bats.

A race to find the planet's 60 deadliest creatures.

Levison and Alberto travel through Guatemala, Honduras and Nicaragua.

Levison and Alberto visit the landscapes, colonial cities, active volcanoes and mountains of Nicaragua and Costa Rica.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

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

Exploring the evolutionary path of the Tyrannosaurus rex; following the journey of two dinosaur brothers and the theoretical evolution from smaller dinosaurs originating in Asia based on fossil findings in China.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

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

Exploring the evolutionary path of the Tyrannosaurus rex; following the journey of two dinosaur brothers and the theoretical evolution from smaller dinosaurs originating in Asia based on fossil findings in China.