BBC Earth

Ben joins adventurer Randi, who was the first Norwegian woman to climb Everest.

Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia. He gets up close to the rulers of the Savannah - the lions and leopards.

The farmers get ready for winter. On the mainland in the west, Sybil and George battle to gather in their herd of cattle. In central Scotland near Loch Lomond, hill farmers Bobby and Anne must also send their sheep away for the winter months.

It's early winter and, although the weather is getting colder and darker, it's a time of year that brings new life on the farms. In the east of Scotland, Martin's sheds are full of pregnant cows - and there are two expectant mothers he's particularly concerned about.

In the heart of Asia lie vast arid lands. These deserts and dry grasslands are so hostile, they push life to the limit. The animals that live here are some of the earth's toughest.

Joanna heads towards the Danube Delta, one of the last great wilderness areas remaining in Europe, full of birdlife including the majestic Pelican. At the mouth of the river, on Romania's Black Sea coast, Joanna bids farewell to the Danube and reflects on her amazing journey.

Uncovering the mystery of where some animals disappear to each year.

The telescope is the invention that allowed the greatest discovery in history - the universe itself. Over the millennia, humans built ever more elaborate constructions aligned with the heavens, revealing our ancient fascination with the night sky.

Dara Ó Briain explores the ways in which the moon shapes just about everything around us, and why there's now a new race to get humans back to the surface of our satellite.

In Kavik, a looming blizzard threatens Sue's food supply. In Eagle, a break in the ice may derail Andy's spring projects.

Ben travels to the vast forests of the Rhodope Mountains in Bulgaria to join Miriam and Peter, a couple who have chosen life as nomads, hiking through some of the world's most striking wildernesses.

Alexander witnesses a volcanic eruption, visits the original geyser, learns about the Icelandic belief in elves, takes a trip to an unusual museum and meets an Icelandic rock band.

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.

The telescope is the invention that allowed the greatest discovery in history - the universe itself. Over the millennia, humans built ever more elaborate constructions aligned with the heavens, revealing our ancient fascination with the night sky.

Ricko DeWilde heads out on a proxy moose hunt. Sue Aikens builds an arctic entryway. The Hailstones pass down family fishing techniques. Andy Bassich revives his land after his injury.

Ben journeys from Stroma, inhabited 1,000 years ago, to Swona, its first inhabitants being the Vikings and then to the towering prehistoric cliffs of St Kilda, the most remote of Scotland's islands.

The car is humankind's ultimate freedom machine - transporting us places we couldn't otherwise go at speeds unimaginable just a century ago. It has transformed the world and revolutionized how we live. How we got here is a story full of astonishing twists and unlikely turns.

In this episode, astronaut Tim Peake steps away from the planets in our solar system and explores the stars beyond.

More stories of the brave and hardy people who live below zero in Northern Canada.

Ricko DeWilde heads out on a proxy moose hunt. Sue Aikens builds an arctic entryway. The Hailstones pass down family fishing techniques. Andy Bassich revives his land after his injury.

Ben journeys from Stroma, inhabited 1,000 years ago, to Swona, its first inhabitants being the Vikings and then to the towering prehistoric cliffs of St Kilda, the most remote of Scotland's islands.

The car is humankind's ultimate freedom machine - transporting us places we couldn't otherwise go at speeds unimaginable just a century ago. It has transformed the world and revolutionized how we live. How we got here is a story full of astonishing twists and unlikely turns.

In this episode, astronaut Tim Peake steps away from the planets in our solar system and explores the stars beyond.

Steve goes in search of the deadliest cats in Africa in the carnivore capital of Zambia. He gets up close to the rulers of the Savannah - the lions and leopards.