BBC Earth (HD)

Ash and team battle rapids, storms and injury on a brutal final push to the ocean, paddling for 36 hours straight before reaching the Atlantic and completing their record-breaking journey.

Seventy-one million years ago lived a teenage Albertosaurus - a faster, nimbler relative of T-Rex. She had to earn her place in a deadly, ferocious pack or risk starvation.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Robson takes football pundit Chris Kamara on a trip to North York Moors National Park. They take high tea on a steam train, overnight in a glamping pod and hunt for fossils.

Robson's in the Cairngorms, joined by Gail Porter. They cycle around Loch Malachie before trying to get a glimpse of ospreys in the wild. Poetry, fresh air and landscapes make for a restful weekend.

Ash and team battle rapids, storms and injury on a brutal final push to the ocean, paddling for 36 hours straight before reaching the Atlantic and completing their record-breaking journey.

Bear Grylls is joined by Tom Arnold on an adventure through the mountains of Oregon. This adventure begins with a helicopter ride to an isolated forest.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Robson takes football pundit Chris Kamara on a trip to North York Moors National Park. They take high tea on a steam train, overnight in a glamping pod and hunt for fossils.

Robson's in the Cairngorms, joined by Gail Porter. They cycle around Loch Malachie before trying to get a glimpse of ospreys in the wild. Poetry, fresh air and landscapes make for a restful weekend.

Ash and team battle rapids, storms and injury on a brutal final push to the ocean, paddling for 36 hours straight before reaching the Atlantic and completing their record-breaking journey.

In the planet's most densely populated continent, animals live at extremely close quarters with people, from tigers making a home in town to elephants stopping traffic for food.

From ice-covered seas to snow-capped mountains, mammals have conquered the cold.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Ash and team battle rapids, storms and injury on a brutal final push to the ocean, paddling for 36 hours straight before reaching the Atlantic and completing their record-breaking journey.

Robson takes football pundit Chris Kamara on a trip to North York Moors National Park. They take high tea on a steam train, overnight in a glamping pod and hunt for fossils.

Robson's in the Cairngorms, joined by Gail Porter. They cycle around Loch Malachie before trying to get a glimpse of ospreys in the wild. Poetry, fresh air and landscapes make for a restful weekend.

Bear Grylls is joined by Tom Arnold on an adventure through the mountains of Oregon. This adventure begins with a helicopter ride to an isolated forest.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Get on board with a cool use for a Boeing 747's wings, which are now the roof of a California house, and step inside a theatre that rose like a phoenix from Industrial Revolution ashes.

World-renowned survivalist Bear Grylls leads Zac Efron on a non-stop extreme survival journey into the Northeast Appalachian mountain range wilderness.

Returning to Nepal, the film crew use thermal cameras and drones to follow tigers after dark, revealing a hidden world of previously unseen behaviour and surprise encounters.

Sue heads south to the enticing turquoise waters of Phuket, the country's largest island. Making her diving debut, she learns how destructive humans can be to the fragile coral reefs.

In an unpredictable world our ancient powers must lay down the foundations of their societies to show their strength and protect their people. Who will build their way to glory?

World-renowned survivalist Bear Grylls leads Zac Efron on a non-stop extreme survival journey into the Northeast Appalachian mountain range wilderness.