BBC Earth

Japan's central island of Honshu is home to over 100 million people, but it has a wild heart and an astonishing range of wildlife lives there.

Ash Dykes highlights conservation in Mutianyu, visits Shixia's wall protectors, explores tech at Jiankou, and bravely tackles the perilous Eagles Neck climb.

Nick's train leaves from Tangier and it's a special one; AL Boraq, which speeds along the high-speed line making its way down the west coast. Al Boraq is run entirely on wind power.

Michael ends his long weekend on a high as he dines at the oldest restaurant in the world, reputedly, and makes a poignant pilgrimage to his uncle's old flat he first visited 60 years ago.

Japan's central island of Honshu is home to over 100 million people, but it has a wild heart and an astonishing range of wildlife lives there.

When the Earth first formed from clouds of dust and gas, it was devoid of an atmosphere. But as the young planet is pummelled by asteroids, a period of extraordinary upheaval begins.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Lion numbers continue to grow, but there's not enough food to go around; a lioness mum risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Griff explores Charleston's charm, Civil War history, and the legacy of slavery that shaped the Old South.

Ben encounters the mighty Congo River for the first time. A trade super-highway, this great river allowed 19th century Europeans to plunder the resources of Central Africa.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Lion numbers continue to grow, but there's not enough food to go around; a lioness mum risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Ben encounters the mighty Congo River for the first time. A trade super-highway, this great river allowed 19th century Europeans to plunder the resources of Central Africa.

Michael dives into local life by tackling the island's murderous links to the Mafia, visiting a bizarre villa of monsters and soaking up the lavish surroundings at the most exquisite of hotels.

Lion numbers continue to grow, but there's not enough food to go around; a lioness mum risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.

Nick's train leaves from Tangier and it's a special one; AL Boraq, which speeds along the high-speed line making its way down the west coast. Al Boraq is run entirely on wind power.

Griff explores Charleston's charm, Civil War history, and the legacy of slavery that shaped the Old South.

Japan's central island of Honshu is home to over 100 million people, but it has a wild heart and an astonishing range of wildlife lives there.

Lion numbers continue to grow, but there's not enough food to go around; a lioness mum risks her life to feed her five cubs; Xudum's newborn leopard cubs face a deadly threat.