BBC Earth HD

Tapping into Gregg's childhood passion and watching an Alstom electric train roll down the production line; visiting the U.K.'s last aluminum-smelting plant with Cherry; exploring the legacy of an antique electrified rail line in Brighton with Ruth.

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

Ranchers would hire cowpokes to deliver their cattle when it was time to take the animals to market; Brett and Cliff to test their mettle in the unforgiving landscape of the Southwest.

The Spy Creatures discover how friendships are a vital part of animal societies. Spy Wolf Cub joins a pack of arctic wolves, where a real cub's survival depends on friendships in one of the harshest environments in the world.

Recently released ravens are attacked; tiny orphans struggle; six stinky skunks.

Meandering through the black waters of a primordial river immortalized in a folk song.

An underwater discovery from a violent past; strange open ocean spirals off the coast of Australia; a mysterious concrete ghost island; never-seen-before tracks discovered along the seabed.

An eagle falls out of its nest; Hope's fawns are in trouble; an attic full of songbirds.

The best kept secrets of Nova Scotia.

Reveal the truth behind the planet's oldest legends. Tour an island covered in polar bears, see bizarre twin craters in Greece, peek at a supervolcano hidden under Yellowstone Park, and examine an ocean formation that's eerily similar to Atlantis.

From delinquent meerkats to thieving penguins, animals misbehave, but they also have a surprising sense of justice.

Rolling down the line with a 187-ton train and touring the UK's last aluminum plant.

Satellites follow an elephant family struggling through drought, reveal previously unknown emperor penguin colonies from the color of their poo and discover mysterious ice rings that could put seal pups in danger.

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

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

Hurricane Ike makes landfall in Galveston, Texas, causing widespread flooding.

Gregg Wallace explores Ribena's Gloucestershire factory, which turns 90 percent of Britain's blackcurrants into soft drinks, producing 3 million bottles a week; Cherry Healey is harvesting the berries in Kent.

Rolling down the line with a 187-ton train and touring the UK's last aluminum plant.

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.

A look at how the planet's limited fresh water is distributed around the globe thanks to storms, and how animals manage in the driest habitats on Earth.

In some natural wonders people push themselves to the limit, and survival requires skill, ingenuity and bravery.

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.

A look at how the planet's limited fresh water is distributed around the globe thanks to storms, and how animals manage in the driest habitats on Earth.

In some natural wonders people push themselves to the limit, and survival requires skill, ingenuity and bravery.

Rolling down the line with a 187-ton train and touring the UK's last aluminum plant.

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

Satellites follow an elephant family struggling through drought, reveal previously unknown emperor penguin colonies from the color of their poo and discover mysterious ice rings that could put seal pups in danger.

From delinquent meerkats to thieving penguins, animals misbehave, but they also have a surprising sense of justice.

An old volunteer returns; an endangered orphan is rescued; a miracle on the half shell.

Nova Scotia's Southern coast.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint, and a pentagram etched into a remote peninsula in Kazakhstan.

A bald eagle needs Hope's help; a small but lethal patient keep the entire staff on their toes.

The Eastern Coastline is a living historical record of the battle between the French and English.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Extraordinary efforts make spy cameras part of animal families.

A look at the construction process behind the double-decker bus in Yorkshire and why they were crucial during WWI.

The Australian outback is covered in pale spots, the work of wombats; a clearing in the green canopy of the Congo rainforest has been created by an elephant gathering; the twists and turns of the Amazon make a home for rehabilitated manatees.

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.

A look at how the planet's limited fresh water is distributed around the globe thanks to storms, and how animals manage in the driest habitats on Earth.

In some natural wonders people push themselves to the limit, and survival requires skill, ingenuity and bravery.

A look at the construction process behind the double-decker bus in Yorkshire and why they were crucial during WWI.

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

Alaskans are forced to embrace their inner warrior as winter deepens.

It's January, and the Ice Vikings confront blizzards and bone-crushing cold on a lake that refuses to freeze solid; Trevor is having a terrible season, and he joins Chris at their basecamp near the Narrows, which leads to tension.

Wildfires rip through Victoria, Australia. In Texas, a skydiving training session ends in disaster when there's a major mid-air collision at 30,000 feet.

Alaskans are forced to embrace their inner warrior as winter deepens.

It's January, and the Ice Vikings confront blizzards and bone-crushing cold on a lake that refuses to freeze solid; Trevor is having a terrible season, and he joins Chris at their basecamp near the Narrows, which leads to tension.

Wildfires rip through Victoria, Australia. In Texas, a skydiving training session ends in disaster when there's a major mid-air collision at 30,000 feet.

A look at the construction process behind the double-decker bus in Yorkshire and why they were crucial during WWI.

With food in abundance it's a time of plenty in the Serengeti, but a series of unexpected events turns families against each other and stretches relationships to breaking point.

The Australian outback is covered in pale spots, the work of wombats; a clearing in the green canopy of the Congo rainforest has been created by an elephant gathering; the twists and turns of the Amazon make a home for rehabilitated manatees.