BBC Earth

David Attenborough examines the elephant and the mole rat.

Nick and Derek receive devastating news putting succession plans into sharp focus in Dumfries and Galloway. On Papa Westray, Paul and Mel are in the midst of their biggest lambing ever.

In Fife, Andy and Jo Morris prepare to compete at one of the biggest highlights in the farming calendar, The Royal Highland Show.

From the barren Australian outback to the remote, dry deserts of Namibia, mammals use their ingenuity, incredible intelligence and remarkable resilience to beat the heat.

Comedian Rob Delaney joins former Special Forces operative Jason Fox in rural Wales, to take on three daring challenges, including a jump off a 40-metre viaduct.

In the final weeks of the pioneering Flinders sleep trial, Dr Michael Mosley's lifelong insomnia starts to shift and the sleep campaign gathers in momentum in Canberra.

The stunning discovery of an executed man in Northern Italy reveals the brutal truth behind the Roman practice of crucifixion and sheds new light on the most famous crucifixion of all.

The struggle for survival in Alaska continues for Sue, Jessie, Glenn and the Hailstones.

As one of the world's most in-demand sporting coaches, 43-year-old Nikola Boric once travelled the world, welcomed everywhere he went. Now, he lives in a wooden cabin without electricity, water or heating.

Jason Fox - Foxy from SAS: Who Dares Wins - takes Maya Jama out of her comfort zone for scary physical challenges and some heart-to-heart chat.

From deep in the undergrowth to the highest tree, forests are home to two-thirds of all mammal species. Discover how they overcome the many challenges of life in a crowded world.

In the final weeks of the pioneering Flinders sleep trial, Dr Michael Mosley's lifelong insomnia starts to shift and the sleep campaign gathers in momentum in Canberra.

Sue Aikens tracks the abundance of creatures roaming around her camp. Andy Bassich and Denise Becker hope to build a lasting legacy along the Yukon River.

Ben journeys off the coast of New Zealand's North Island to Great Barrier Island, where he meets a man who gave up his promising scientific career to embrace life in an off-grid, secluded world.

Scientists believe that challenging the body can benefit the brain. Dr Michael Mosley learns how meditation can help fight dementia and how people can sharpen their minds by being more like children.

How did a small island create the biggest empire the world has ever seen? David Olusoga uncovers a living legacy.

Michael Portillo has a modern edition of his Bradshaw's Continental Handbook, dated 1936. His destination lies close to his heart: the ancient kingdom of Spain and land of his father.

Sue Aikens tracks the abundance of creatures roaming around her camp. Andy Bassich and Denise Becker hope to build a lasting legacy along the Yukon River.

Ben journeys off the coast of New Zealand's North Island to Great Barrier Island, where he meets a man who gave up his promising scientific career to embrace life in an off-grid, secluded world.

Scientists believe that challenging the body can benefit the brain. Dr Michael Mosley learns how meditation can help fight dementia and how people can sharpen their minds by being more like children.

How did a small island create the biggest empire the world has ever seen? David Olusoga uncovers a living legacy.