BBC Earth (HD)

The epic journey of a mother humpback whale and her calf is tracked in this episode, from tropical paradise to polar seas.

Mist swirls around the base of Shanghai's skyline. From the city, tigers and monkeys seem as unreal and distant as dragons and mermaids emerging through the mist. Yet they exist as rare survivors in an extraordinary and diverse landscape. From snow leopards to wild horses, and from alligators to elephants, China's iconic wildlife is a lot more than just pandas.

Many passionate people are dedicated to saving the wild animals of Asia. These individuals and their ingenious solutions give us hope and optimism for the future of the continent.

Stroll through a public park that was once a New York rail line and a church that was transformed into a thriving community hub.

Actor Ed Helms faces sheer cliffs, crumbling rock and a cringeworthy dinner menu while atop Colorado mountains; Helms discusses the road to his career in comedy.

Steve Backshall goes searching for venomous snakes, bears and a cave dragon.

Steve Backshall heads to Timor Leste in search of the biggest animal to have ever lived - the blue whale.

Deep in the heart of Southeast Asia lies a region of rugged geography home to a diverse mix of people. A world apart from the rest of Myanmar, the Chin Hills are crossed by walking trails and paths.

President Barack Obama and Bear Grylls explore the Alaskan wilderness, where they observe evidence of climate change, sample wild salmon and catkins tea made with water from melting glaciers; Obama discusses his official duties, parenthood and faith.

Cameras in space capture natural spectacles on an epic scale.

Nick starts with a helicopter ride along the northernmost stretch of the Mississippi.

Reza investigates the evidence of Persian leopards' existence in the mountains of Iraqi Kurdistan.

President Barack Obama and Bear Grylls explore the Alaskan wilderness, where they observe evidence of climate change, sample wild salmon and catkins tea made with water from melting glaciers; Obama discusses his official duties, parenthood and faith.

Cameras in space capture natural spectacles on an epic scale.

Nick starts with a helicopter ride along the northernmost stretch of the Mississippi.

Reza investigates the evidence of Persian leopards' existence in the mountains of Iraqi Kurdistan.

President Barack Obama and Bear Grylls explore the Alaskan wilderness, where they observe evidence of climate change, sample wild salmon and catkins tea made with water from melting glaciers; Obama discusses his official duties, parenthood and faith.

Cameras in space capture natural spectacles on an epic scale.

Deep in the heart of Southeast Asia lies a region of rugged geography home to a diverse mix of people. A world apart from the rest of Myanmar, the Chin Hills are crossed by walking trails and paths.

Reza investigates the evidence of Persian leopards' existence in the mountains of Iraqi Kurdistan.

Robson and his uncle Matheson discover Hepple Estate in Northumberland and learn how to paint with pheasant feathers. They track wildlife before attempting to learn some circus skills.

The Rev Richard Coles joins Robson to explore the Northumberland coastline. They take a Canadian canoe trip along the River Coquet, visit the hidden gem of Walkworth's secret hermitage, make the crossing to Lindisfarne for a photography class and have a go at rope work.

Stroll through a public park that was once a New York rail line and a church that was transformed into a thriving community hub.

President Barack Obama and Bear Grylls explore the Alaskan wilderness, where they observe evidence of climate change, sample wild salmon and catkins tea made with water from melting glaciers; Obama discusses his official duties, parenthood and faith.

Nick starts with a helicopter ride along the northernmost stretch of the Mississippi.

Robson and his uncle Matheson discover Hepple Estate in Northumberland and learn how to paint with pheasant feathers. They track wildlife before attempting to learn some circus skills.

The Rev Richard Coles joins Robson to explore the Northumberland coastline. They take a Canadian canoe trip along the River Coquet, visit the hidden gem of Walkworth's secret hermitage, make the crossing to Lindisfarne for a photography class and have a go at rope work.

Sue continues her Alaskan adventure of a lifetime, following the old gold trail route into the interior of America's largest and wildest state.

Stroll through a public park that was once a New York rail line and a church that was transformed into a thriving community hub.

Some of the largest and oldest living things on Earth are to be found in forests, yet even the smallest trees make a difference to our well-being.

Nick starts with a helicopter ride along the northernmost stretch of the Mississippi.

Cameras in space capture natural spectacles on an epic scale.

Stroll through a public park that was once a New York rail line and a church that was transformed into a thriving community hub.

President Barack Obama and Bear Grylls explore the Alaskan wilderness, where they observe evidence of climate change, sample wild salmon and catkins tea made with water from melting glaciers; Obama discusses his official duties, parenthood and faith.

Sue continues her Alaskan adventure of a lifetime, following the old gold trail route into the interior of America's largest and wildest state.

Nick starts with a helicopter ride along the northernmost stretch of the Mississippi.

Julianne Hough joins Bear on a trek in Africa, where they encounter a pack of elephants blocking their path. Other challenges include dealing with big cats and a snake.

Simon Reeve battles his way across the Congo, braving thick jungle and tropical swamps in search of the people and the wildlife who make their home in Africa's greatest rainforest.

In the city of Malaga, Michael enjoys one of Spain's biggest street parties: the Feria.

In Louisiana, Hurricane Ida destroys homes and lives. In Norway, High seas and high winds force a Captain to abandon ship. And in California, wildfires tear through the state.

Julianne Hough joins Bear on a trek in Africa, where they encounter a pack of elephants blocking their path. Other challenges include dealing with big cats and a snake.