BBC Earth

Brian takes a fresh look at the astonishing concept of gravity.

Steve and a team of rock climbers head to southern Oman to attempt the first ascent of a towering escarpment, hoping to discover the rare and elusive Arabian leopard.

Pioneers strive to protect the ocean from the effects of human activity.

Brian takes a fresh look at the astonishing concept of gravity.

Steve and a team of rock climbers head to southern Oman to attempt the first ascent of a towering escarpment, hoping to discover the rare and elusive Arabian leopard.

A look at how gravity affects the world, and even the solar system.

Hope learns all she can from birds of prey rehab.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

From the icy peaks of age-old mountain glaciers to the fog-shrouded canopies of Canada's only rainforest, it's the wettest place in North America.

Examine mysterious holes in Isreal; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

Four rival families, leopards, hyena, wild dogs and lions, all try to claim a rich corner of Zambian paradise as their home.

Leopard Mutima's relationship with her mother is at breaking point, and as the balance of power in Nsefu tips towards the lions, the hyenas and wild dogs fight to raise their young.

Seeking a mate, leopard Olimba begins a new chapter, but in her way is her daughter; the hyenas' strength is growing, but a flooded den spells disaster, and the clan become separated.

Injured wild dog Flint helps care for Storm's largest ever litter of pups; leopard Mutima searches for a home; the lions are challenged by forces beyond their control.

Olimba struggles with old age, and the wild dog story takes an unexpected turn; the lions and the hyenas both enjoy a baby boom - but who has the power to rule?

Meet the people that made filming Kingdom possible and uncover the extraordinary acts of conservationists and anti-poaching teams protecting South Luangwa and all its inhabitants.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

The story of Lusotitan, a colossal, long-necked dinosaur, and its quest for love.

Astrophysicist Professor Tamara Davis explores one of the greatest scientific mysteries of all - how life began; one meteorite found in Australia, the Murchison meteorite, completely changed our understanding of asteroids.

Olimba struggles with old age, and the wild dog story takes an unexpected turn; the lions and the hyenas both enjoy a baby boom - but who has the power to rule?

The story of Lusotitan, a colossal, long-necked dinosaur, and its quest for love.

Astrophysicist Professor Tamara Davis explores one of the greatest scientific mysteries of all - how life began; one meteorite found in Australia, the Murchison meteorite, completely changed our understanding of asteroids.

Olimba struggles with old age, and the wild dog story takes an unexpected turn; the lions and the hyenas both enjoy a baby boom - but who has the power to rule?

Asia has the longest coastline of any continent, rich coral reefs, and never-seen-before animal behavior; exploring Asia's diverse waters.

Asia is the most mountainous continent on earth; from the tropical south to its barren centre, its highest places are home to some of our planet's most remarkable wildlife.

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

Asia's jungles are beautiful and exceptionally diverse, but whilst they provide shelter, food, and opportunity, they are also full of dangers and hidden threats.

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.

Incredible stories of wildlife rescue and rehabilitation.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Incredible stories of wildlife rescue and rehabilitation.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

Incredible stories of wildlife rescue and rehabilitation.

With summer nearing its end, Alaskans kick into high gear.

Earth's journey into the deep freeze starts with fire over 800 million years ago; Long before the age of the dinosaurs, before there was even animal life, the supercontinent Rodinia breaks up.

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 toughest on earth - they are Asia's great survivors.

With summer nearing its end, Alaskans kick into high gear.

Olimba struggles with old age, and the wild dog story takes an unexpected turn; the lions and the hyenas both enjoy a baby boom - but who has the power to rule?

In Moreton Bay, Dr. Ann gets in the water with a dugong as part of the world's largest dugong health check; a critical mission to help save the species globally; she learns that many dugong secrets can be found in their poo!

Head to Zambia's Liuwa Plain, where Steve tracks a young female cheetah that shows him how these supercharged cats hunt; learn what's pushing her species to the brink of extinction; hold your breath as bloodthirsty hyenas circle her territory.

The extraordinary story of how the human species, Homo sapiens, first emerged, where the discoveries of recent years are revolutionising the understanding of humanity's origin story.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

Lev and his guide Boston are 1100 miles and four months into their journey, in the world's newest nation, South Sudan; arriving in the capital, Juba, Lev and Boston are arrested by secret police.