Sir David Attenborough goes back in time to the roots of the tree of life, in search of the very first animals

In fifty years of broadcasting, Sir David Attenborough has travelled the globe to document the living world in all its wonder. Now, in the landmark series, David Attenborough\'s First Life, he completes his journey by going back in time to the roots of the tree of life, in search of the very first animals.

Attenborough's journey continues in Canada's Rocky Mountains, where fossils document an explosion in animal diversity never seen before or since. Travelling from there to North Africa, the rainforests of Australia and the east coast of Scotland, Attenborough discovers how animals evolved to conquer not only the oceans but also the land and air.

Documentary following endangered species fighting for their survival. David, a chimpanzee in Senegal, tries to overcome threats to his leadership and ensure an heir.

Documentary following endangered species fighting for their survival. A colony of emperor penguins try to keep themselves and their chicks alive through the winter.

Documentary following endangered species fighting for their survival. The lioness leader of a once mighty pride must now battle for their very survival.

Documentary following endangered species fighting for their survival. A painted wolf matriarch's feud with her daughter threatens to bring the dynasty down.

Documentary following endangered species fighting for their survival. A tigress must protect her cubs while battling rivals who want to steal her lands and overthrow her.

Five extraordinary animals, each in a heroic struggle against rivals and against the forces of nature, fighting for their own survival and for the future of their dynasties.

David Attenborough travels to the end of the earth, taking viewers on an extraordinary journey across the polar regions of our planet.

David Attenborough travels to the end of the earth, taking viewers on an extraordinary journey across the polar regions of our planet, North and South.

Spring arrives in the polar regions, and the sun appears after an absence of five months; warmth and life return to these magical ice worlds - the greatest seasonal transformation on our planet is underway.

It is high summer in the polar regions, and the sun never sets. Vast hordes of summer visitors cram a lifetime of drama into one long, magical day; they must feed, fight and rear their young in this brief window of plenty.

For the animals in the polar regions, autumn means dramatic battles and epic journeys. Time is running out - the Arctic Ocean is freezing over and the sea ice is advancing at 2.5 miles per day around Antarctica.

There is no greater test for life than winter, as temperatures plummet to 70 below and winds reach 200kph. Darkness and ice extend across the polar regions and only a few remarkable survivors gamble on remaining.

David Attenborough reveals the vast wildnerness of the polar regions and their inhabitants. At the North Pole, the sun returns after six months of darkness.

David Attenborough journeys to both polar regions to investigate what rising temperatures will mean for the people and wildlife that live there and for the rest of the planet.

This Frozen Planet special brings together the very best highlights of the series, taking viewers on a spectacular journey through the entire polar year - from the depths of winter to the melting world of the polar summer.

This Frozen Planet special brings together the very best highlights of the series, taking viewers on a spectacular journey through the entire polar year - from the depths of winter to the melting world of the polar summer.

The film also uncovers the disturbing story of how shipping noise is deafening whales and dolphins, affecting their survival in the future.

Human Planet, a cinematic experience, bringing you the most amazing human stories in the world today. Humans and wildlife surviving in the most extreme environments on Earth.

The Arctic is the harshest environment on Earth: little food grows, it\'s dark for months on end, and temperatures stay well below freezing for much of the year. Yet four million people manage to survive here.

A total of 10 stories from across the Human Planet series, closely linked to the KS2 Geography curriculum, look at how humans have learnt to live with extremes, and explore how people across the globe live with extreme cold; live in desert environments without water; and how they live in mountain regions facing daily hazards.

A look at the one environment that\'s been made by us for us - the city. Over half of the world\'s population now lives in the urban jungle. The city is built to keep untamed nature out - but nature can\'t be pushed away. From bed bugs sucking our blood at night to rats in our restaurants, many animals have adapted to a life with us.

We can survive for weeks without food, but only days without water: it is the essential element of life. Yet many millions of us live in parched deserts around the world. In the second episode of Human Planet, we discover how the eternal quest for water brings huge challenges - and ingenious solutions - in the driest places on Earth.

Grasslands feed the world. Over thousands of years, we humans have learned to grow grains on the grasslands and domesticate the creatures that live there. Our success has propelled our population to almost seven billion people.

The rainforest is home to more species of plants and animals than any other habitat on the planet. But for humans, life there is not as easy as it looks. Life in the trees requires great skill, ingenuity and sheer bravery.

From lush cloud forests to bare summits that take your breath away, the higher you climb the tougher life gets on a mountain. Human Planet explores the extraordinary ways in which people survive at extreme altitudes where nature becomes utterly unforgiving.

As an air-breathing animal, the human is not built to survive in water. But people have found ways to live an almost aquatic life so they can exploit the sea\'s riches.

Rivers provide the essentials of life: fresh food and water. They often provide natural highways and enable us to live in just about every environment on Earth. But rivers can also flood, freeze or disappear altogether!