BBC Earth

David Attenborough sets out on an extraordinary journey across the earth's polar regions, exploring the Arctic and Antarctic.

This episode explores the extraordinary wildlife in the south west of Japan, where a chain of small islands stretches towards the tropics.

Ash Dykes explores Zhangjiakou's ancient Wall, skis Chongli, follows explorers at Wulouggou, and reaches the Yellow River's historic convergence.

Nick Knowles travels from the Alps to the Adriatic in another entertaining railway adventure as he journeys by train through the breath-taking scenery of Slovenia and Croatia.

Michael embraces the spirit of the great navigators, uncovers the origins of the spy with a license to kill, discovers a lavish 18th century party palace, and turns sleuth to find a secret restaurant.

This episode explores the extraordinary wildlife in the south west of Japan, where a chain of small islands stretches towards the tropics.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it, and what can be learnt from this tale before it's too late.

Michael's tackles a 700-year old stick-fighting marital art, witnesses divine illumination at a magnificent monastery, and discovers a chocolate cake with global ambitions.

Lucy must adapt to life as a hunter-gatherer and earn the respect of the tribesmen, whose knowledge, skills and understanding of the land will be vital for the expedition ahead.

Griff finds modern Atlanta's bold energy, then heads to the Appalachians for bluegrass and gold rush tales.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

Michael's tackles a 700-year old stick-fighting marital art, witnesses divine illumination at a magnificent monastery, and discovers a chocolate cake with global ambitions.

Lucy must adapt to life as a hunter-gatherer and earn the respect of the tribesmen, whose knowledge, skills and understanding of the land will be vital for the expedition ahead.

Adventurer Ben Fogle meets Vanessa Forero deep in the Sierra Nevada de Santa Marta, an isolated mountain range in the north of Columbia.

Michael's tackles a 700-year old stick-fighting marital art, witnesses divine illumination at a magnificent monastery, and discovers a chocolate cake with global ambitions.

Lucy must adapt to life as a hunter-gatherer and earn the respect of the tribesmen, whose knowledge, skills and understanding of the land will be vital for the expedition ahead.

Nick Knowles travels from the Alps to the Adriatic in another entertaining railway adventure as he journeys by train through the breath-taking scenery of Slovenia and Croatia.

Griff finds modern Atlanta's bold energy, then heads to the Appalachians for bluegrass and gold rush tales.

This episode explores the extraordinary wildlife in the south west of Japan, where a chain of small islands stretches towards the tropics.

Lucy must adapt to life as a hunter-gatherer and earn the respect of the tribesmen, whose knowledge, skills and understanding of the land will be vital for the expedition ahead.