BBC Earth

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, 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 breathtaking 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.

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, 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.

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 breathtaking 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.

In the final episode, 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 and witnesses a female puma hunting an armadillo.

Steve Backshall goes in search of bat-hunting boas, meets a team working to save the deadly but cute slow loris, and he comes face to face with the king of snakes: the king cobra.

Michael Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and in 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 and witnesses a female puma hunting an armadillo.

Michael Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

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, 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.

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

Steve Backshall goes in search of bat-hunting boas, meets a team working to save the deadly but cute slow loris, and he comes face to face with the king of snakes: the king cobra.

Michael Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

In the final episode, 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 and witnesses a female puma hunting an armadillo.

Steve Backshall goes in search of bat-hunting boas, meets a team working to save the deadly but cute slow loris, and he comes face to face with the king of snakes: the king cobra.

Michael Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

In the final episode, 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 in 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 and witnesses a female puma hunting an armadillo.

In the final episode, 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 Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

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 and witnesses a female puma hunting an armadillo.

Steve Backshall goes in search of bat-hunting boas, meets a team working to save the deadly but cute slow loris, and he comes face to face with the king of snakes: the king cobra.

Feel the burn at a state-of-the-art gym that used to be a psychiatric hospital and in 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.

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 Palin explores Caracas's stark wealth divide and political crisis before heading to the Amazon to see Angel Falls and uncover the impact of illegal gold mining.

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 and witnesses a female puma hunting an armadillo.

Steve Backshall goes in search of bat-hunting boas, meets a team working to save the deadly but cute slow loris, and he comes face to face with the king of snakes: the king cobra.

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.