BBC Earth

Song Ji-hyo continues on the greatest challenge of her life: free diving with the legendary Haenyeo female underwater sea fishers.

Tour a building that once fuelled the Victorian era but is now a busy retail complex, then eye a Viennese gasometer that has become a shining example of communal living.

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

Steve Backshall is in the Middle Eastern nation of Oman, in search of some of the brainiest, most intelligent hunters our planet has ever seen, as well as a shark species we have never seen before.

Steve Backshall is in the urban jungle in Chile looking for animals that thrive downtown. Chile is boarded on the west by the pacific ocean. Sea birds and sea lions thrive close to the shore.

Ryan continues the mammoth trek that began in Liechtenstein, meeting a fascinating collection of characters along their path, as they draw ever closer to their goal of arriving in Montreux.

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.

Cameras in space show that Earth is changing rapidly. Cities sprawl while forests and glaciers shrink. But in Tanzania locals have regenerated the landscape to save chimpanzees.

Joanna returns to her birthplace, India, in search of a kitchen cupboard staple once known as 'black gold'. Starting in the majestic ancient city of Hampi, she's invited to a dazzling Hindu festival.

Reza sets off on a quest to be the first to capture the mysterious Dugongs of Bahrain on camera.

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.

Cameras in space show that Earth is changing rapidly. Cities sprawl while forests and glaciers shrink. But in Tanzania locals have regenerated the landscape to save chimpanzees.

Reza sets off on a quest to be the first to capture the mysterious Dugongs of Bahrain on camera.

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.

Cameras in space show that Earth is changing rapidly. Cities sprawl while forests and glaciers shrink. But in Tanzania locals have regenerated the landscape to save chimpanzees.

Ryan continues the mammoth trek that began in Liechtenstein, meeting a fascinating collection of characters along their path, as they draw ever closer to their goal of arriving in Montreux.

Reza sets off on a quest to be the first to capture the mysterious Dugongs of Bahrain on camera.

In the final leg, Palin enters Zulia's dangerous border region, exploring struggling communities while seeking the Catatumbo lightning and witnessing resilience, culture and hardship.

Tour a building that once fuelled the Victorian era but is now a busy retail complex, then eye a Viennese gasometer that has become a shining example of communal living.