BBC Earth

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

The rehab is flooded with orphaned seals, with some frozen solid in ice.

A group of chimps in Senegal is led by an alpha male named Dave.

A colony of emperor penguins arrive in Atka Bay, after three months at sea, to raise their chicks through the coming winter.

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

Australia was once home to a group of animals known as megafauna, giants who lived here for millions of years; in a blink of time, the megafauna disappeared forever; a team of scientists are reopening this paleolithic cold case.

Sir David Attenborough reveals new animal behaviors in the ocean.

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.

The boys are in Laos in search of a diabolical catfish, but the best place to find it is near the mouth of Mekong, where it is believed that there is a hidden world. It is a difficult journey and the road is full of evil spirits.

From the bone-dry deserts of the Atacama, where penguins weave their way through a minefield of snapping sea lions, to the lush cloud forests of the Andes, South America is full of unusual and ingenious wildlife.

Brian explores one of the greatest mysteries in physics: time.

Steve Backshall travels from the icy waters of Alaska to the tropics to study the life of sharks.

From the bone-dry deserts of the Atacama, where penguins weave their way through a minefield of snapping sea lions, to the lush cloud forests of the Andes, South America is full of unusual and ingenious wildlife.

Brian explores one of the greatest mysteries in physics: time.

Steve Backshall travels from the icy waters of Alaska to the tropics to study the life of sharks.

Brian explores one of the greatest mysteries in physics: time.

Steve Backshall travels from the icy waters of Alaska to the tropics to study the life of sharks.

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

Hope opens her doors to the public.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

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.

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.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

Hope puts everything on the line to save an orphaned black bear cub; two bobcats are ready for release, but they won't go easy.

Australia was once home to a group of animals known as megafauna, giants who lived here for millions of years; in a blink of time, the megafauna disappeared forever; a team of scientists are reopening this paleolithic cold case.

Sir David Attenborough reveals new animal behaviors in the ocean.

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 northern Queensland, nature nerd Dr Ann Jones comes face to face with one of Australia's mightiest predators, the bull shark, and discovers there's much more to them than meets the eye.

A race to find the planet's 60 deadliest creatures.

Levison and Alberto explore a vampire bat-infested cave, the Panama Canal and modern Panama City.

Levison begins his journey in Afghanistan's remote and inhospitable Wakhan Corridor.

A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Australia was once home to a group of animals known as megafauna, giants who lived here for millions of years; in a blink of time, the megafauna disappeared forever; a team of scientists are reopening this paleolithic cold case.

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

A Spinosaurus, the world's largest ever predatory dinosaur, struggles to bring up his babies and lead his young family across one of the deadliest environments on Earth.

Australia was once home to a group of animals known as megafauna, giants who lived here for millions of years; in a blink of time, the megafauna disappeared forever; a team of scientists are reopening this paleolithic cold case.

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

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.

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

A group of chimps in Senegal is led by an alpha male named Dave.

A colony of emperor penguins arrive in Atka Bay, after three months at sea, to raise their chicks through the coming winter.

The leader of a once mighty lion pride must now battle for their very survival; a look at whether or not this extraordinary lioness can save her family from disaster.

When a great horned owl arrives covered in oil, Doctor Sherri must put it through a terrifying, life-saving procedure; boxes of young foxes need help and attention.

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.

When a great horned owl arrives covered in oil, Doctor Sherri must put it through a terrifying, life-saving procedure; boxes of young foxes need help and attention.

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.

When a great horned owl arrives covered in oil, Doctor Sherri must put it through a terrifying, life-saving procedure; boxes of young foxes need help and attention.

Alaskans test their will and luck against Dark Winter's obstacles.

Two brilliant physicists, Albert Einstein and Stephen Hawking have each defined humanity's understanding of the universe but their beliefs on how it works do not always align.

The leader of a great Painted Wolf family is growing old and her power to keep the peace is waning; a feud with an ambitious daughter threatens to bring the dynasty down.

Alaskans test their will and luck against Dark Winter's obstacles.

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

In northern Queensland, nature nerd Dr Ann Jones comes face to face with one of Australia's mightiest predators, the bull shark, and discovers there's much more to them than meets the eye.

A race to find the planet's 60 deadliest creatures.

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 takes in the scenery in northern Pakistan's mountain valleys.

Levison reunites with his old friend Binod Parya who once saved his life.

Persued by a group of Utahraptors, a gang of armored dinosaurs battle to reach adulthood.

Levison takes in the scenery in northern Pakistan's mountain valleys.

Levison reunites with his old friend Binod Parya who once saved his life.

Persued by a group of Utahraptors, a gang of armored dinosaurs battle to reach adulthood.