BBC Earth

Alaskans prepare themselves for winter; hunting caribou; a bear poses a threat; repairing a fish wheel; hauling a felled moose.

From dolphins to cuttlefish, ocean animals possess emotions and behavior similar to humans, including the capacity to love, grieve, deceive and invent.

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

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

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

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

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

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

Alaskans prepare themselves for winter; hunting caribou; a bear poses a threat; repairing a fish wheel; hauling a felled moose.

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.

From dolphins to cuttlefish, ocean animals possess emotions and behavior similar to humans, including the capacity to love, grieve, deceive and invent.

Alaskans prepare themselves for winter; hunting caribou; a bear poses a threat; repairing a fish wheel; hauling a felled moose.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

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 diamond's rise from gemstone to a cutting-edge material that is set to revolutionize electronics.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

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 diamond's rise from gemstone to a cutting-edge material that is set to revolutionize electronics.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

Alaskans prepare for the winter months; Andy hunts moose; Sue heads to Fairbanks for a foot procedure; the hailstones teach their daughters to ice fish; Glenn repairs his cabin.

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.

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

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

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

Alaskans prepare for the winter months; Andy hunts moose; Sue heads to Fairbanks for a foot procedure; the hailstones teach their daughters to ice fish; Glenn repairs his cabin.

Uncovering surprising undersea relationships and connections as sharks befriend fish and whales play with dolphins.

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

Steve heads to the Mexican island of Cabo Pulmo, where the people have worked tirelessly to bring their surrounding oceans back to life and make it a marine reserve.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

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.

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

Steve heads to the Mexican island of Cabo Pulmo, where the people have worked tirelessly to bring their surrounding oceans back to life and make it a marine reserve.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

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.

Alaskans prepare for the winter months; Andy hunts moose; Sue heads to Fairbanks for a foot procedure; the hailstones teach their daughters to ice fish; Glenn repairs his cabin.

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.

Uncovering surprising undersea relationships and connections as sharks befriend fish and whales play with dolphins.

Alaskans prepare for the winter months; Andy hunts moose; Sue heads to Fairbanks for a foot procedure; the hailstones teach their daughters to ice fish; Glenn repairs his cabin.

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

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.

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

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

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.

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

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

Sue travels 150 miles to investigate squatters on her property; Andy's sled begins to fall apart while he's collecting firewood; Chip and Agnes brave thin ice to harvest whitefish.

Analyze the ways in which cold has shaped the physical world, and learn why the definition of frozen may require an update; meet scientists pushing frigid temps to their absolute limit, driving technological developments such as superconductors.

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

Steve heads to the Mexican island of Cabo Pulmo, where the people have worked tirelessly to bring their surrounding oceans back to life and make it a marine reserve.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

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.

Sue travels 150 miles to investigate squatters on her property; Andy's sled begins to fall apart while he's collecting firewood; Chip and Agnes brave thin ice to harvest whitefish.

From a baby whale in danger to marine iguanas battling storms, a look at how animals survive when faced with challenges of the ocean.

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.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

Journey from the lava ramparts to its fiery heart, discovering how this place became one of the most important areas of biodiversity in the world.

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.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

Journey from the lava ramparts to its fiery heart, discovering how this place became one of the most important areas of biodiversity in the world.

Sue travels 150 miles to investigate squatters on her property; Andy's sled begins to fall apart while he's collecting firewood; Chip and Agnes brave thin ice to harvest whitefish.

Analyze the ways in which cold has shaped the physical world, and learn why the definition of frozen may require an update; meet scientists pushing frigid temps to their absolute limit, driving technological developments such as superconductors.

From a baby whale in danger to marine iguanas battling storms, a look at how animals survive when faced with challenges of the ocean.

Sue travels 150 miles to investigate squatters on her property; Andy's sled begins to fall apart while he's collecting firewood; Chip and Agnes brave thin ice to harvest whitefish.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

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 form the middle of the Pacific Ocean.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

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 form the middle of the Pacific Ocean.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

Chip builds a freight sled for winter travel; Sue is forced to brave a dangerous road to get home after a blizzard strands her in Fairbanks; Andy and Kate get their sled dogs ready for winter; Glenn tries to harvest meat for the winter.

Helen Czerski reveals how life began when hot met cold, and how every single living creature on Earth depends on temperature for its survival; she witnesses the remarkable surgery that uses temperature to push the human body to the brink of life.

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.

Explaining how freshwater is the lifeblood of planet Earth and why animals depend on it for their survival.

Journey from the lava ramparts to its fiery heart, discovering how this place became one of the most important areas of biodiversity in the world.

Chip builds a freight sled for winter travel; Sue is forced to brave a dangerous road to get home after a blizzard strands her in Fairbanks; Andy and Kate get their sled dogs ready for winter; Glenn tries to harvest meat for the winter.

A young Albertosaurus, a relative of Tyrannosaurus rex, must earn her place in a deadly hunting pack or face starvation.

Alaskans face long days and uncertain outcomes during trapping season.

Chris starts his season with a massive catch of Tullibee, only to see his happiness cut short; Justin and Mike start in Hecla and hit the motherlode; a critical fish market closes; Richard's close call on the ice.

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

Alaskans face long days and uncertain outcomes during trapping season.

Chris starts his season with a massive catch of Tullibee, only to see his happiness cut short; Justin and Mike start in Hecla and hit the motherlode; a critical fish market closes; Richard's close call on the ice.