BBC Earth

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

Alaskans must adapt to new obstacles to survive in deep winter.

Around 12,000 years ago, as the Ice Age finally thaws, humanity makes a dramatic shift - abandoning nomadic life for permanent settlements.

Will we soon find evidence of alien life? Scientists are currently in the throes of an unprecedented search for ET - and an answer to this long-pondered question may come sooner than you think.

Professor Brian Cox begins his exploration of the cosmos with a hymn to the great luminous bodies that bring light and warmth to the universe: the stars.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

Will we soon find evidence of alien life? Scientists are currently in the throes of an unprecedented search for ET - and an answer to this long-pondered question may come sooner than you think.

Professor Brian Cox begins his exploration of the cosmos with a hymn to the great luminous bodies that bring light and warmth to the universe: the stars.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

Andy and Kate teach subsistence and survival skills; Cody Allen has ventured into the bush from Oregon to learn how to live off the land.

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.

An epic journey into the unknown, a realm that feels almost like science fiction.

Andy and Kate teach subsistence and survival skills; Cody Allen has ventured into the bush from Oregon to learn how to live off the land.

A mysterious predator prowls the streets of a giant metropolis.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

The jungle, underwater caves and lush everglades of the Yucatan shelter Mexico's largest predator, Morelet's crocodile.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

An epic journey into the unknown, a realm that feels almost like science fiction.

Coral Reefs are vibrant undersea cities where life has found ways to survive.

The big blue is the world's greatest wilderness, far from shore and many kilometers deep.

From forests to undersea prairies, it is the green of the sea that brings life to oceans.

Coasts are the most changeable habitats of the ocean world.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

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.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

Brian learns about the oldest planet in the solar system Jupiter, which uses its size to manipulate other planets.

Head out with a team of intrepid scientists on a daring expedition off Western Australia's Pilbara coast; Slither into the heart of danger with Dr. Ann, who gets too close for comfort to one of the nation's most mysterious and lethal serpents.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

Brian learns about the oldest planet in the solar system Jupiter, which uses its size to manipulate other planets.

Steve Backshall leads a team on a mission to make the world's first ascent of a remote mountain in Greenland.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

Brian learns about the oldest planet in the solar system Jupiter, which uses its size to manipulate other planets.

Steve Backshall leads a team on a mission to make the world's first ascent of a remote mountain in Greenland.

The space telescope Hipparcos led to a discovery that sent shockwaves throughout the astronomical community: a star appearing to be older than the universe itself.

Hope gets hurt; an owl gets a nasty welcome back to the wild.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

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

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

A bird is in trouble, but is it wildlife? Spring patients are ready to return to the wild.

Nominations for the Earthshot Prize to Fix Our Climate are revealed as Prince William, Sir David Attenborough and Christiana Figueres, who led negotiations for the Paris Agreement on climate change, highlight inspiring solutions.

For her pups to survive, a young meerkat queen must unite her family in the face of rivals, predators and immense dust storms in the harsh beauty of the Madgadikgadi salt pans of Botswana.

A mother puma must battle rivals, tackle prey nearly three times her size and endure the wild mountain weather of Patagonia in her bid to raise four cubs, her biggest litter yet.

In Amboseli, Kenya, an incredibly rare drought event pushes a struggling elephant family to its limits as their only chance to save their dynasty is to work together and overcome the challenge of a lifetime.

For her pups to survive, a young meerkat queen must unite her family in the face of rivals, predators and immense dust storms in the harsh beauty of the Madgadikgadi salt pans of Botswana.

A mother puma must battle rivals, tackle prey nearly three times her size and endure the wild mountain weather of Patagonia in her bid to raise four cubs, her biggest litter yet.

In Amboseli, Kenya, an incredibly rare drought event pushes a struggling elephant family to its limits as their only chance to save their dynasty is to work together and overcome the challenge of a lifetime.

Chart the changes that are endangering six of Earth's most fragile ecosystems...and our planet's future. See how scientists and activists are developing pioneering solutions that could save threatened communities and wildlife on the edge of extinction.

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?

Chart the changes that are endangering six of Earth's most fragile ecosystems...and our planet's future. See how scientists and activists are developing pioneering solutions that could save threatened communities and wildlife on the edge of extinction.

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?

Emperor penguins cross a dangerous frozen sea to reach their breeding grounds; rockhoppers brave stormy seas and a 300-foot cliff; tropical Humboldt penguins face sea lions and vampire bats as they make their way to their desert nests.

The male penguins hand over their newborns to the returning females.

A journey from the heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

An epic journey into the unknown, a realm that feels almost like science fiction.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

Iceland is the world's largest volcanic island and new ground is born daily.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

Iceland is the world's largest volcanic island and new ground is born daily.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

The rehab is abuzz as Hope's open house approaches; a release at the birthplace of hockey goes offside; a deer doesn't want to depart.

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.

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.

Around 12,000 years ago, as the Ice Age finally thaws, humanity makes a dramatic shift - abandoning nomadic life for permanent settlements.

Levison Wood is in Botswana hoping to follow the world's largest elephant migration for 650 miles on foot along ancient pathways, but he first must overcome dangers in the bush before tracking a large herd of female elephants.

Lev and his guide, Kane, journey across the saltpans to track bull elephants, but their safety is soon jeopardized when they encounter a herd during mating season.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

Levison Wood is in Botswana hoping to follow the world's largest elephant migration for 650 miles on foot along ancient pathways, but he first must overcome dangers in the bush before tracking a large herd of female elephants.

Lev and his guide, Kane, journey across the saltpans to track bull elephants, but their safety is soon jeopardized when they encounter a herd during mating season.