BBC Earth (HD)

Korean star Song Ji-hyo will undertake the greatest challenge of her life: free diving with the legendary haenyeo female underwater sea fishers, who she feels a special connection to.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

After a breath-taking repel from a helicopter, Bear and Hollywood actor Vanessa Hudgens evade a boulder avalanche, summit a massive dormant volcano and come face-to-face with a rattlesnake.

Ben Fogle journeys to the mountains of central Portugal.

Even the mightiest oak must start life as a tiny acorn. We explore the secret lives of young trees, discovering how they magically transform from minute seeds into mature adults. But with fewer than one in a thousand seeds reaching adulthood, a tree's early years are the most treacherous of its life.

Korean star Song Ji-hyo will undertake the greatest challenge of her life: free diving with the legendary haenyeo female underwater sea fishers, who she feels a special connection to.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

From adorable pygmy sloths to huge living dragons, islands offer a refuge for the planet's strangest creatures. But life on these isolated lands is full of unexpected challenges.

Even the mightiest oak must start life as a tiny acorn. We explore the secret lives of young trees, discovering how they magically transform from minute seeds into mature adults. But with fewer than one in a thousand seeds reaching adulthood, a tree's early years are the most treacherous of its life.

Ben Fogle journeys to the mountains of central Portugal.

Korean star Song Ji-hyo will undertake the greatest challenge of her life: free diving with the legendary haenyeo female underwater sea fishers, who she feels a special connection to.

After a breath-taking repel from a helicopter, Bear and Hollywood actor Vanessa Hudgens evade a boulder avalanche, summit a massive dormant volcano and come face-to-face with a rattlesnake.

Even the mightiest oak must start life as a tiny acorn. We explore the secret lives of young trees, discovering how they magically transform from minute seeds into mature adults. But with fewer than one in a thousand seeds reaching adulthood, a tree's early years are the most treacherous of its life.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

Nick Jonas joins Bear for a snowy mountain adventure in the Sierra Nevada during blizzard conditions. The guys rappel down a sheer cliff, eat a frozen bird and swim across a freezing lake.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and see a climbing complex that once was a sugar refinery.

Nick Jonas joins Bear for a snowy mountain adventure in the Sierra Nevada during blizzard conditions. The guys rappel down a sheer cliff, eat a frozen bird and swim across a freezing lake.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

Nick Jonas joins Bear for a snowy mountain adventure in the Sierra Nevada during blizzard conditions. The guys rappel down a sheer cliff, eat a frozen bird and swim across a freezing lake.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

Even the mightiest oak must start life as a tiny acorn. We explore the secret lives of young trees, discovering how they magically transform from minute seeds into mature adults. But with fewer than one in a thousand seeds reaching adulthood, a tree's early years are the most treacherous of its life.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

Nick Jonas joins Bear for a snowy mountain adventure in the Sierra Nevada during blizzard conditions. The guys rappel down a sheer cliff, eat a frozen bird and swim across a freezing lake.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and see a climbing complex that once was a sugar refinery.

Great mountain ranges may provide some spectacular landscapes, but they are difficult habitats to live in. This film offers an intimate look at the secretive lives of mountain animals.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

In the final episode of her epic Alaskan adventure, Sue rounds off this trip of a lifetime by heading even further off the beaten track and visiting amazing communities living in the extreme wilderness.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

Nick Jonas joins Bear for a snowy mountain adventure in the Sierra Nevada during blizzard conditions. The guys rappel down a sheer cliff, eat a frozen bird and swim across a freezing lake.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and see a climbing complex that once was a sugar refinery.

Marshawn Lynch joins Bear on the French island of Corsica, where they chase a wild hog, navigate cliffs and encounter the French Foreign Legion.

In the jungles of north west India, there lives a remarkable wild tiger family. Now, using 50 years of footage, the story of their matriarchal clan is pieced together.

The Simien Mountains is an exotic and dramatic landscape set in the northern corner of Ethiopia. Breath-taking views abound in this natural landscape inhabited by unique and endangered wildlife.

In an unruly world our ancient powers must lead their people, create ways to govern and keep rebellion at bay. Who will find the right way to rule?

Marshawn Lynch joins Bear on the French island of Corsica, where they chase a wild hog, navigate cliffs and encounter the French Foreign Legion.

In the jungles of north west India, there lives a remarkable wild tiger family. Now, using 50 years of footage, the story of their matriarchal clan is pieced together.

The Simien Mountains is an exotic and dramatic landscape set in the northern corner of Ethiopia. Breath-taking views abound in this natural landscape inhabited by unique and endangered wildlife.

In an unruly world our ancient powers must lead their people, create ways to govern and keep rebellion at bay. Who will find the right way to rule?

Marshawn Lynch joins Bear on the French island of Corsica, where they chase a wild hog, navigate cliffs and encounter the French Foreign Legion.

In the jungles of north west India, there lives a remarkable wild tiger family. Now, using 50 years of footage, the story of their matriarchal clan is pieced together.

Michael begins in Caracas - from the dangerous slums to the opulent Humboldt Hotel.

The Simien Mountains is an exotic and dramatic landscape set in the northern corner of Ethiopia. Breath-taking views abound in this natural landscape inhabited by unique and endangered wildlife.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

In the jungles of north west India, there lives a remarkable wild tiger family. Now, using 50 years of footage, the story of their matriarchal clan is pieced together.

Marshawn Lynch joins Bear on the French island of Corsica, where they chase a wild hog, navigate cliffs and encounter the French Foreign Legion.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and see a climbing complex that once was a sugar refinery.

Korean star Song Ji-hyo will undertake the greatest challenge of her life: free diving with the legendary haenyeo female underwater sea fishers, who she feels a special connection to.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

The Simien Mountains is an exotic and dramatic landscape set in the northern corner of Ethiopia. Breath-taking views abound in this natural landscape inhabited by unique and endangered wildlife.

Jungles offer mysterious worlds with surprising animal characters - follow some of them in the forests of Madagascar as they struggle to survive in this competitive habitat.

In the jungles of north west India, there lives a remarkable wild tiger family. Now, using 50 years of footage, the story of their matriarchal clan is pieced together.

Korean star Song Ji-hyo will undertake the greatest challenge of her life: free diving with the legendary haenyeo female underwater sea fishers, who she feels a special connection to.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and see a climbing complex that once was a sugar refinery.

Marshawn Lynch joins Bear on the French island of Corsica, where they chase a wild hog, navigate cliffs and encounter the French Foreign Legion.

Steve Backshall goes searching for Patagonia's perfect predator: the puma. After waiting his whole life to see one, Steve sees a tiny cub.

Steve Backshall goes in search of bat-hunting boas, and meets a team working to save the deadly but cute slow loris.

The Simien Mountains is an exotic and dramatic landscape set in the northern corner of Ethiopia. Breath-taking views abound in this natural landscape inhabited by unique and endangered wildlife.

Lindsey Vonn joins Bear on the French island of Corsica, where they rappel down a rock wall, use a spear gun, swim and dine on sea urchins.

Cameras in space capture natural spectacles on an epic scale.

Nick learns about Civil Rights activist Medgar Evers, and paddles on the river at sunset.

Reza is in Saudi Arabia to reveal the secrets of a hidden frontier on the brink of historic change.

Lindsey Vonn joins Bear on the French island of Corsica, where they rappel down a rock wall, use a spear gun, swim and dine on sea urchins.