BBC Earth

At the far tip of South America lies a magical realm that seems frozen in time; known as "the end of the world", this is Patagonia.

The winter season grows more erratic, and Alaskans are forced to adapt.

Exploring the Moukalaba Doudou National Park in Gabon, in search of an undiscovered population of chimpanzees.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.

Hope releases the last of her deer herd as spring approaches, but one fawn doesn't want to leave.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

The Cassini-Huygens spacecraft has been sending images and a wealth of scientific revelations from Saturn's orbit since 2004.

Hope releases the last of her deer herd as spring approaches, but one fawn doesn't want to leave.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

The Cassini-Huygens spacecraft has been sending images and a wealth of scientific revelations from Saturn's orbit since 2004.

Hope releases the last of her deer herd as spring approaches, but one fawn doesn't want to leave.

Dara Ó Briain investigates the darker side of the sun and the invisible harm that the sun can do to us.

Venus offers a complex story with its thick atmosphere and a substantial amount of matter.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

Searching for ways to minimize their carbon footprints, Zac and Darin visit a self-sustaining home and other business innovating to reduce waste.

Finding relief as Paddy discovers the keys to making healing analgesic tablets and soothing throat lozenges at the Reckitt factory in Nottingham; discovering how mercury thermometers are crafted with Cherry, then examining dodgy Victorian meds with Ruth.

At the far tip of South America lies a magical realm that seems frozen in time; known as "the end of the world", this is Patagonia.

The winter season grows more erratic, and Alaskans are forced to adapt.

Exploring the Moukalaba Doudou National Park in Gabon, in search of an undiscovered population of chimpanzees.

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

Life-giving rains turn the waterhole into a lush oasis; a look at new births among the herbivores, how predators cope with this seasonal change and how population increases transform the site's dynamic.

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

Life-giving rains turn the waterhole into a lush oasis; a look at new births among the herbivores, how predators cope with this seasonal change and how population increases transform the site's dynamic.

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

Life-giving rains turn the waterhole into a lush oasis; a look at new births among the herbivores, how predators cope with this seasonal change and how population increases transform the site's dynamic.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

Hope prepares for her fundraiser but the spring baby boom starts early; youngest owl; American icon.

An enormous fiery vortex in Redding, Calif.; the island nation of Malta loses a natural treasure; a mysterious radioactive hotspot is discovered near Chernobyl; an unknown force lays waste to a mountain forest in Italian Alps.

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

Hope prepares for her fundraiser but the spring baby boom starts early; youngest owl; American icon.

An enormous fiery vortex in Redding, Calif.; the island nation of Malta loses a natural treasure; a mysterious radioactive hotspot is discovered near Chernobyl; an unknown force lays waste to a mountain forest in Italian Alps.

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

Hope prepares for her fundraiser but the spring baby boom starts early; youngest owl; American icon.

The winter season grows more erratic, and Alaskans are forced to adapt.

Simon looks back on some of the most dangerous situations he's experienced.

Brave the constant wind, rain, and snow that pummels the foot of South America; Cross treacherous ice fields that are losing ground due to climate change, push through the foothills of the Andes, and ride alongside Patagonia's legendary gauchos.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Simon looks back on some of the most dangerous situations he's experienced.

Brave the constant wind, rain, and snow that pummels the foot of South America; Cross treacherous ice fields that are losing ground due to climate change, push through the foothills of the Andes, and ride alongside Patagonia's legendary gauchos.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Spy creatures reveal an ocean full of intelligence and ways of thinking, including large-brained whales, smart octopi, diving monkeys, creative fish and other intelligent animals.

Ken O'Sullivan explores the marine life of the northern part of the ocean, beginning with the dark waters off the coast of the north of Ireland in winter and the strange animals that can be found there.

After seven months walking, Lev reaches his final country: Egypt; he has 900 miles to go to the Mediterranean, but the authorities give him just 45 days to finish.

Spy creatures reveal an ocean full of intelligence and ways of thinking, including large-brained whales, smart octopi, diving monkeys, creative fish and other intelligent animals.

Ken O'Sullivan explores the marine life of the northern part of the ocean, beginning with the dark waters off the coast of the north of Ireland in winter and the strange animals that can be found there.

After seven months walking, Lev reaches his final country: Egypt; he has 900 miles to go to the Mediterranean, but the authorities give him just 45 days to finish.

Spy creatures reveal an ocean full of intelligence and ways of thinking, including large-brained whales, smart octopi, diving monkeys, creative fish and other intelligent animals.

Simon looks back on some of the most dangerous situations he's experienced.

Brave the constant wind, rain, and snow that pummels the foot of South America; Cross treacherous ice fields that are losing ground due to climate change, push through the foothills of the Andes, and ride alongside Patagonia's legendary gauchos.

The second leg of Simon's journey takes him from the fjords of Norway to Iceland, the land of fire and ice.

Hope tries to save orphaned fox pups; an owl may be carrying a deadly disease.

A long-forgotten network of Native American earthworks; a baffling battlefield mystery in Belgium; a mysterious blood-red lake on a remote Greek island; an eerie pink glow emulating from the middle of the Pacific Ocean.

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

Hope tries to save orphaned fox pups; an owl may be carrying a deadly disease.

A long-forgotten network of Native American earthworks; a baffling battlefield mystery in Belgium; a mysterious blood-red lake on a remote Greek island; an eerie pink glow emulating from the middle of the Pacific Ocean.

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

Hope tries to save orphaned fox pups; an owl may be carrying a deadly disease.

A tiny turtle hatchling struggles out of her egg, emerging onto the roadside, and faces the task of crossing Highway 60; with the wetland somewhere on the other side of the road, she deals with trucks and roadside predators like ravens and foxes.

At the far tip of South America lies a magical realm that seems frozen in time; known as "the end of the world", this is Patagonia.

A tiny turtle hatchling struggles out of her egg, emerging onto the roadside, and faces the task of crossing Highway 60; with the wetland somewhere on the other side of the road, she deals with trucks and roadside predators like ravens and foxes.

Spy creatures reveal an ocean full of intelligence and ways of thinking, including large-brained whales, smart octopi, diving monkeys, creative fish and other intelligent animals.

Ken O'Sullivan explores the marine life of the northern part of the ocean, beginning with the dark waters off the coast of the north of Ireland in winter and the strange animals that can be found there.

After seven months walking, Lev reaches his final country: Egypt; he has 900 miles to go to the Mediterranean, but the authorities give him just 45 days to finish.

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

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

Paddy McGuinness and Cherry Healey hit factory floors across Britain for a snoop around their supersized production lines to reveal what the secrets are behind supermarket staples.

Coasts are the most changeable habitats of the ocean world.

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

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

Paddy McGuinness and Cherry Healey hit factory floors across Britain for a snoop around their supersized production lines to reveal what the secrets are behind supermarket staples.