BBC Earth

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.

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.

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.

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.

Griff Rhys Jones journey heads down New Zealand's back roads sees him travel from Auckland to the Coromandel, on to Taupo and finally Wellington.

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.

Tropical rainforests are plant battlegrounds. New filming techniques allow us to enter the world of plants to see it from their perspective and on their timescale.

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.

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.

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.

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.

Griff Rhys Jones journey heads down New Zealand's back roads sees him travel from Auckland to the Coromandel, on to Taupo and finally Wellington.

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.

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.

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.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

In Tennessee, a river breaks its banks. In Canada a Tornado rips through a construction site. And in Papua New Guinea, a rain flooded river raises the danger levels.

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.

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.

In Tennessee, a river breaks its banks. In Canada a Tornado rips through a construction site. And in Papua New Guinea, a rain flooded river raises the danger levels.

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.

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.

Michael takes part in an exercise to hoist the mainsail of an 80-metre long tall ship.

In Tennessee, a river breaks its banks. In Canada a Tornado rips through a construction site. And in Papua New Guinea, a rain flooded river raises the danger levels.

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

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.