Wallace visits a Yorkshire team that churns out up to 90,000 vegan sausages a day; Cherry Healey discovers how Canadian soybeans are transformed into protein-packed tofu.

A great fire leaves homes destroyed and families separated; the animal characters must find new ways to survive in an unrecognisable and inhospitable landscape.

In South Africa, Steve and his crew search for great white sharks.

In Indonesia, Steve and his crew are chased by a group of Komodo dragons; Steve heads to Nepal in search of more deadly giants.

First of a two part film offering a rare insight into the life of polar bears.

A moose arrives mysteriously; fawns flood the rehab.

From the remote border town of Pohegemanook, tracing the Quebec, Maine and New Brunswick borders ending at the open waters of the Atlantic.

Scientists postulate that Earth was once sheathed in ice and complex animals evolved when the planet thawed, due to the release of carbon dioxide.

A moose arrives mysteriously; fawns flood the rehab.

From the remote border town of Pohegemanook, tracing the Quebec, Maine and New Brunswick borders ending at the open waters of the Atlantic.

Scientists postulate that Earth was once sheathed in ice and complex animals evolved when the planet thawed, due to the release of carbon dioxide.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering 7 million bars a day. He follows the incredible 24 hour journey - from bean to bar - of one of our best-selling chocolates.

The incredible story of how Pluto has been propelled from an unremarkable ball of ice on the edge of the solar system to a world of unimaginable complexity; one where some form of alien life might even exist.

Scientists postulate that Earth was once sheathed in ice and complex animals evolved when the planet thawed, due to the release of carbon dioxide.

Voyaging across the solar system with Professor Brian Cox, exploring new discoveries, natural wonders, and strange mysteries on the diverse worlds that orbit the sun.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering 7 million bars a day. He follows the incredible 24 hour journey - from bean to bar - of one of our best-selling chocolates.

As the land dries, everyone struggles to find water; the hippos get trapped in the shrinking lake, and Nalla the elephant finds a clever solution to quench everyone's thirst.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Professor Cox explores the cycles of time that define the lives of humans.

Headphones are worn by over 30 million people in the UK; Hannah Fry visits legendary headphone honchos Bose to find out how today's teeny earbud tech works and meets the human testers with golden ears.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Professor Cox explores the cycles of time that define the lives of humans.

Headphones are worn by over 30 million people in the UK; Hannah Fry visits legendary headphone honchos Bose to find out how today's teeny earbud tech works and meets the human testers with golden ears.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering 7 million bars a day. He follows the incredible 24 hour journey - from bean to bar - of one of our best-selling chocolates.

As the land dries, everyone struggles to find water; the hippos get trapped in the shrinking lake, and Nalla the elephant finds a clever solution to quench everyone's thirst.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe.

A fox needs several surgeries to survive; four raptors leave Hope for Wildlife.

Revealing amazing Arctic wonders, from the towering ice fields of Eclipse Sound to the natural beauty of Sirmilik National Park.

How the earth's atmosphere came to be; the one man to have braved the atmosphere's upper reaches and survived.

A fox needs several surgeries to survive; four raptors leave Hope for Wildlife.

Revealing amazing Arctic wonders, from the towering ice fields of Eclipse Sound to the natural beauty of Sirmilik National Park.

How the earth's atmosphere came to be; the one man to have braved the atmosphere's upper reaches and survived.

David Attenborough reveals how the unique and bizarre wildlife of the Galápagos Islands is adapting to a human revolution.

Gregg Wallace gets exclusive access to one of the largest fresh milk processing plants on earth to see how they get milk from cow to carton in less than 24 hours. He reveals how one factory can process 2000 litres of milk in under a minute.

The differences between the Northern and Southern Rockies.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Professor Cox explores the cycles of time that define the lives of humans.

Headphones are worn by over 30 million people in the UK; Hannah Fry visits legendary headphone honchos Bose to find out how today's teeny earbud tech works and meets the human testers with golden ears.

Gregg Wallace gets exclusive access to one of the largest fresh milk processing plants on earth to see how they get milk from cow to carton in less than 24 hours. He reveals how one factory can process 2000 litres of milk in under a minute.

As the animal families escape the drought, the land returns to its former beauty; new life is born, old rivalries are laid to rest and new alliances are forged.

Mexico's Yucatan Peninsula; Steve encounters a bull shark and embarks on a high-octane chase with a sailfish; Steve witnesses a million-strong gathering of bats taking to the night sky.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Traveling from the frigid, icy waters of Alaska to the balmy, serene seas of the tropics; seeing how varied shark species really are; getting insight into their lives, learning why these endangered creatures are not monsters at all.

Gregg explores the Nottinghamshire factory producing curry sauce; Cherry goes to Guntur, India, to check out their chili production.

Mexico's Yucatan Peninsula; Steve encounters a bull shark and embarks on a high-octane chase with a sailfish; Steve witnesses a million-strong gathering of bats taking to the night sky.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Traveling from the frigid, icy waters of Alaska to the balmy, serene seas of the tropics; seeing how varied shark species really are; getting insight into their lives, learning why these endangered creatures are not monsters at all.

Gregg explores the Nottinghamshire factory producing curry sauce; Cherry goes to Guntur, India, to check out their chili production.

Gregg Wallace gets exclusive access to one of the largest fresh milk processing plants on earth to see how they get milk from cow to carton in less than 24 hours. He reveals how one factory can process 2000 litres of milk in under a minute.

As the animal families escape the drought, the land returns to its former beauty; new life is born, old rivalries are laid to rest and new alliances are forged.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

David Attenborough reveals how the unique and bizarre wildlife of the Galápagos Islands is adapting to a human revolution.

A patient moves towards recovery; a mysterious illness kills dozens of animals.

Traveling from the northern point of Baffin Island onto the brilliant waters of Admiralty Inlet and ending up in the northern desert hamlet of Gjoa Haven.

The search for the building blocks of life on Mars; an attempt to prove life was, or is, possible on the red planet.

A patient moves towards recovery; a mysterious illness kills dozens of animals.

Traveling from the northern point of Baffin Island onto the brilliant waters of Admiralty Inlet and ending up in the northern desert hamlet of Gjoa Haven.

The search for the building blocks of life on Mars; an attempt to prove life was, or is, possible on the red planet.

David Attenborough reveals the life of the hippopotamus, an animal that cannot swim yet is utterly dependent on water, with incredible underwater footage.

Gregg Wallace takes an exclusive tour of Kellogg's massive Manchester factory to discover, step-by-step, what it takes to produce a million boxes of cereal every day; Cherry Healey discovers how special nutrients are added to cereal.

Scientists postulate that Earth was once sheathed in ice and complex animals evolved when the planet thawed, due to the release of carbon dioxide.

Mexico's Yucatan Peninsula; Steve encounters a bull shark and embarks on a high-octane chase with a sailfish; Steve witnesses a million-strong gathering of bats taking to the night sky.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Gregg explores the Nottinghamshire factory producing curry sauce; Cherry goes to Guntur, India, to check out their chili production.

Gregg Wallace takes an exclusive tour of Kellogg's massive Manchester factory to discover, step-by-step, what it takes to produce a million boxes of cereal every day; Cherry Healey discovers how special nutrients are added to cereal.

David Attenborough explores plants in the tropical rain forest.

David Attenborough reveals the life of the hippopotamus, an animal that cannot swim yet is utterly dependent on water, with incredible underwater footage.

Cities serve as places of surprising opportunity for animals to thrive.

The story of how plant life turned Earth from a barren rock into a vibrant green world; a four-billion year saga of highs and lows that almost wiped out all life on the planet.

David Attenborough reveals the life of the hippopotamus, an animal that cannot swim yet is utterly dependent on water, with incredible underwater footage.

Cities serve as places of surprising opportunity for animals to thrive.

The story of how plant life turned Earth from a barren rock into a vibrant green world; a four-billion year saga of highs and lows that almost wiped out all life on the planet.

Gregg Wallace takes an exclusive tour of Kellogg's massive Manchester factory to discover, step-by-step, what it takes to produce a million boxes of cereal every day; Cherry Healey discovers how special nutrients are added to cereal.

David Attenborough explores plants in the tropical rain forest.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

Steve Backshall boards an icebreaker and heads to the Arctic, to search for polar bears, musk oxen and beluga whales.

David Attenborough reveals the life of the hippopotamus, an animal that cannot swim yet is utterly dependent on water, with incredible underwater footage.

Hope tries to stop the outbreak from spreading; decisions to save Hope for Wildlife.

Explore the Nunavut community of Gjoa Haven then head west on approach to the central Arctic hub of Cambridge Bay.

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

Hope tries to stop the outbreak from spreading; decisions to save Hope for Wildlife.

Explore the Nunavut community of Gjoa Haven then head west on approach to the central Arctic hub of Cambridge Bay.

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

South America's supreme predator, jaguars are also one of the most elusive animals on the planet; a pioneering team in Brazil track individual wild jaguars to gain amazing insight into their lives.

Gregg Wallace follows 27 tons of potatoes from a farm in Hampshire, England, through the largest crisp factory on Earth, as they are peeled, sliced and fried to make more than five million packets of crisps every 24 hours.

How the earth's atmosphere came to be; the one man to have braved the atmosphere's upper reaches and survived.

David Attenborough reveals the life of the hippopotamus, an animal that cannot swim yet is utterly dependent on water, with incredible underwater footage.

South America's supreme predator, jaguars are also one of the most elusive animals on the planet; a pioneering team in Brazil track individual wild jaguars to gain amazing insight into their lives.

The story of how plant life turned Earth from a barren rock into a vibrant green world; a four-billion year saga of highs and lows that almost wiped out all life on the planet.

Gregg Wallace follows 27 tons of potatoes from a farm in Hampshire, England, through the largest crisp factory on Earth, as they are peeled, sliced and fried to make more than five million packets of crisps every 24 hours.

Exploring water plants, some of which can count and hunt; some water plants escape from animals by rolling away or creating bubbles.

Traveling from the frigid, icy waters of Alaska to the balmy, serene seas of the tropics; seeing how varied shark species really are; getting insight into their lives, learning why these endangered creatures are not monsters at all.

Celebrities tackle some of the most infamous roads in the world.

Alaskans confront the environment and themselves as winter bears down.

Traveling from the frigid, icy waters of Alaska to the balmy, serene seas of the tropics; seeing how varied shark species really are; getting insight into their lives, learning why these endangered creatures are not monsters at all.

Celebrities tackle some of the most infamous roads in the world.

Alaskans confront the environment and themselves as winter bears down.

Gregg Wallace follows 27 tons of potatoes from a farm in Hampshire, England, through the largest crisp factory on Earth, as they are peeled, sliced and fried to make more than five million packets of crisps every 24 hours.

Exploring water plants, some of which can count and hunt; some water plants escape from animals by rolling away or creating bubbles.

Steve Backshall boards an icebreaker and heads to the Arctic, to search for polar bears, musk oxen and beluga whales.

Steve and the team are in Alaska, searching for humpback whales, sixgill sharks and bald eagles.

South America's supreme predator, jaguars are also one of the most elusive animals on the planet; a pioneering team in Brazil track individual wild jaguars to gain amazing insight into their lives.

A look at the care, cleaning and feeding of the animals; a patient refuses to leave.

West of Cambridge Bay, examine Nunavut's remote, northern waterways, from Dease Strait, to Bathurst inlet and then finally, the open waters of Coronation Gulf, and then to Kugluktuk.

Scientists work to find ways to safeguard Earth from potential threats posed by asteroids and other cosmic debris.

A look at the care, cleaning and feeding of the animals; a patient refuses to leave.

West of Cambridge Bay, examine Nunavut's remote, northern waterways, from Dease Strait, to Bathurst inlet and then finally, the open waters of Coronation Gulf, and then to Kugluktuk.

Scientists work to find ways to safeguard Earth from potential threats posed by asteroids and other cosmic debris.

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.

Gregg follows the journey of 27 tons of dried haricot beans from North America to the largest bean factory in the world.

The search for the building blocks of life on Mars; an attempt to prove life was, or is, possible on the red planet.

Headphones are worn by over 30 million people in the UK; Hannah Fry visits legendary headphone honchos Bose to find out how today's teeny earbud tech works and meets the human testers with golden ears.

Celebrities tackle some of the most infamous roads in the world.

Alaskans confront the environment and themselves as winter bears down.

Gregg follows the journey of 27 tons of dried haricot beans from North America to the largest bean factory in the world.

Plants use strategy, deception and feats of engineering in order to survive the challenges posed by the different seasons.

Many leading scientists believe there is a possibility of detecting the first evidence of extraterrestrial life.

An exploration of the faint band of light that sweeps across the night sky, the Milky Way; Professor Brian Cox reveals the Milky Way's dramatic history and predicts its cataclysmic future.

Professor Cox explores the cycles of time that define the lives of humans.

Many leading scientists believe there is a possibility of detecting the first evidence of extraterrestrial life.

An exploration of the faint band of light that sweeps across the night sky, the Milky Way; Professor Brian Cox reveals the Milky Way's dramatic history and predicts its cataclysmic future.

Professor Cox explores the cycles of time that define the lives of humans.

Gregg follows the journey of 27 tons of dried haricot beans from North America to the largest bean factory in the world.

Plants use strategy, deception and feats of engineering in order to survive the challenges posed by the different seasons.

Steve and the team are in Alaska, searching for humpback whales, sixgill sharks and bald eagles.

Grey wolves and bison in Yellowstone National Park; hellbenders in North Carolina.

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.

From high above, a view of Niagara Falls, Lake Ontario, the Greater Toronto Area and the wonders of Thousand Islands National Park.

The Niagara Escarpment Biosphere Reserve begins with the mighty Niagara Falls and winds its way through deep valleys and caves.

Scientists explore how to protect the earth when solar storms destroy earthbound technologies and send satellites crashing to earth.

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.

Foraging some stinging nettle; combining newly foraged items with domestic ingredients.

Les Stroud comes across a large patch of spring beauty while hiking in a coniferous forest; secret ingredient.

A look at Dr. Savannah's practice and what she's learning about Metis culture.

Savannah balances the medical needs of animals with the emotional bonds of the owners.

Valentino, Yutris and the rest of group two have fun as they visit group three's flooded classroom; three quarantine infants get the results of their TB tests; the residents of Bangamat Island do not welcome newcomers leading to a confrontation.

As the land dries, everyone struggles to find water; the hippos get trapped in the shrinking lake, and Nalla the elephant finds a clever solution to quench everyone's thirst.

As the animal families escape the drought, the land returns to its former beauty; new life is born, old rivalries are laid to rest and new alliances are forged.

David Attenborough explores plants in the tropical rain forest.

Exploring water plants, some of which can count and hunt; some water plants escape from animals by rolling away or creating bubbles.

Plants use strategy, deception and feats of engineering in order to survive the challenges posed by the different seasons.

Gregg explores the Nottinghamshire factory producing curry sauce; Cherry goes to Guntur, India, to check out their chili production.

As the land dries, everyone struggles to find water; the hippos get trapped in the shrinking lake, and Nalla the elephant finds a clever solution to quench everyone's thirst.

Celebrities tackle some of the most infamous roads in the world.

Mexico's Yucatan Peninsula; Steve encounters a bull shark and embarks on a high-octane chase with a sailfish; Steve witnesses a million-strong gathering of bats taking to the night sky.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Celebrities tackle some of the most infamous roads in the world.

Mexico's Yucatan Peninsula; Steve encounters a bull shark and embarks on a high-octane chase with a sailfish; Steve witnesses a million-strong gathering of bats taking to the night sky.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

Gregg Wallace is inside one of the world's largest chocolate factories in York to discover how they produce a staggering 7 million bars a day. He follows the incredible 24 hour journey - from bean to bar - of one of our best-selling chocolates.

As the animal families escape the drought, the land returns to its former beauty; new life is born, old rivalries are laid to rest and new alliances are forged.

In Florida, Steve dives into the Silver Springs river to swim with a wild alligator; Steve tries to catch an amphiuma.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe.

Exploring the St. Lawrence Seaway from the Great Lakes to Quebec City.

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

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

Tower over amazing metropolises. Learn why an important urban centre is sinking toward oblivion, soar over sprawling ruins buried under Saharan sands, learn the modern secret of an ancient fortress, and eye a ghost town on the edge of the Gobi.

Exploring harvesting opportunities while at a remote fishing lodge in the Pacific Northwest; rainbow trout and fiddleheads.

The sitka spruce tree.

Griff Rhys Jones explores the province of Ontario.

Gregg explores the Nottinghamshire factory producing curry sauce; Cherry goes to Guntur, India, to check out their chili production.

Zac learns about beekeeping on a New York City rooftop, then he heads to London to check out its pollution-reduction efforts, from wall gardening to trash collecting.

The story of how plant life turned Earth from a barren rock into a vibrant green world; a four-billion year saga of highs and lows that almost wiped out all life on the planet.

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.

Headphones are worn by over 30 million people in the UK; Hannah Fry visits legendary headphone honchos Bose to find out how today's teeny earbud tech works and meets the human testers with golden ears.

The story of how plant life turned Earth from a barren rock into a vibrant green world; a four-billion year saga of highs and lows that almost wiped out all life on the planet.

Brian questions how far humans will go in their exploration of the cosmos.

Cities serve as places of surprising opportunity for animals to thrive.

Voyaging across the solar system with Professor Brian Cox, exploring new discoveries, natural wonders, and strange mysteries on the diverse worlds that orbit the sun.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

Voyaging across the solar system with Professor Brian Cox, exploring new discoveries, natural wonders, and strange mysteries on the diverse worlds that orbit the sun.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

Sir David Attenborough explores the dangerous frontiers created by the world's coasts, where animals fight for survival amid constant change; there are some unexpected residents on Namibia's Skeleton Coast.

Gregg Wallace gets exclusive access to one of the largest fresh milk processing plants on earth to see how they get milk from cow to carton in less than 24 hours. He reveals how one factory can process 2000 litres of milk in under a minute.

David Attenborough explores plants in the tropical rain forest.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

David Attenborough reveals how the unique and bizarre wildlife of the Galápagos Islands is adapting to a human revolution.

Hope says goodbye to two celebrated patients; the grim reality of wildlife rehabilitation.

The Western Nunavut region is one of the most sporadically-seen landscapes on Earth. We examine the community of Kugluktuk - Tukut Nogait National Park - and further west, the tiny hamlet of Paulatuk.

Scientists explore how to protect the earth when solar storms destroy earthbound technologies and send satellites crashing to earth.

Hope says goodbye to two celebrated patients; the grim reality of wildlife rehabilitation.

The Western Nunavut region is one of the most sporadically-seen landscapes on Earth. We examine the community of Kugluktuk - Tukut Nogait National Park - and further west, the tiny hamlet of Paulatuk.

Scientists explore how to protect the earth when solar storms destroy earthbound technologies and send satellites crashing to earth.

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

Gregg Wallace explores the largest bicycle factory in Britain, which produces 150 folding bicycles every 24 hours, and joins a multi-stage manual production line to make his very own bike.

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

Scientists explore how to protect the earth when solar storms destroy earthbound technologies and send satellites crashing to earth.

Brian journeys across the solar system and explores its weirdest worlds, the misfits and oddballs; he discovers the forces that sculpted bizarre features and strange phenomena.

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

Gregg Wallace explores the largest bicycle factory in Britain, which produces 150 folding bicycles every 24 hours, and joins a multi-stage manual production line to make his very own bike.

Exploring the hostile world of the desert and how plants survive by using weapons, camouflage and surprising alliances with animals.

Before heading to Paris to learn about its tap water system, Zac joins friend Anna Kendrick for a lesson in H2O from a water sommelier in Los Angeles.

The same 92 elements that exist on Earth can be found throughout the cosmos.

Hannah goes behind the scenes to look at the technology behind the lift; along the way, she finds out how coal mines made lifts safer, gets to grips with a piece of medieval siege technology, and discovers how a PR stunt changed the modern skyline.

Before heading to Paris to learn about its tap water system, Zac joins friend Anna Kendrick for a lesson in H2O from a water sommelier in Los Angeles.

The same 92 elements that exist on Earth can be found throughout the cosmos.

Hannah goes behind the scenes to look at the technology behind the lift; along the way, she finds out how coal mines made lifts safer, gets to grips with a piece of medieval siege technology, and discovers how a PR stunt changed the modern skyline.

Gregg Wallace explores the largest bicycle factory in Britain, which produces 150 folding bicycles every 24 hours, and joins a multi-stage manual production line to make his very own bike.

Exploring the hostile world of the desert and how plants survive by using weapons, camouflage and surprising alliances with animals.

Grey wolves and bison in Yellowstone National Park; hellbenders in North Carolina.

Steve travels to Tornado Alley, Texas; Steve goes fishing for an alligator gar, the largest fresh water fish in North America.

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

Hope prepares for one of the most important days of the year; a violent storm threatens the event.

The Northern mainland coast of the Northwest Territories is a dazzling contrast in scenery - from the Smoking Hills of Bathurst peninsula - to the ethereal Tuktoyaktuk Peninsula - to the locality that shares its name.

The sudden release of built-up magnetic energy in the solar atmosphere -- a solar storm -- affects Earth.

Hope prepares for one of the most important days of the year; a violent storm threatens the event.

The Northern mainland coast of the Northwest Territories is a dazzling contrast in scenery - from the Smoking Hills of Bathurst peninsula - to the ethereal Tuktoyaktuk Peninsula - to the locality that shares its name.

The sudden release of built-up magnetic energy in the solar atmosphere -- a solar storm -- affects Earth.

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

Gregg Wallace lends a hand unloading a tanker of sugar, and follows its path through a factory to learn how the workers transform it into sweets.

Scientists work to find ways to safeguard Earth from potential threats posed by asteroids and other cosmic debris.

Before heading to Paris to learn about its tap water system, Zac joins friend Anna Kendrick for a lesson in H2O from a water sommelier in Los Angeles.

The same 92 elements that exist on Earth can be found throughout the cosmos.

Hannah goes behind the scenes to look at the technology behind the lift; along the way, she finds out how coal mines made lifts safer, gets to grips with a piece of medieval siege technology, and discovers how a PR stunt changed the modern skyline.

Gregg Wallace lends a hand unloading a tanker of sugar, and follows its path through a factory to learn how the workers transform it into sweets.

David Attenborough explains how humans help plants that are facing extinction, from projects in Africa to re-seeding the landscape to rebuilding a Brazilian rainforest tree.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

Gregg Wallace explores an enormous factory that produces 450 tons of frozen food each day; he follows the production of frozen potato waffles, from the arrival of 25 tons of potatoes right through dispatch.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

Steve goes on a mission to learn whether the sharks of the Indian Ocean are capable of adapting to rapidly changing conditions like climate change, overfishing, and pollution.

Gregg Wallace explores an enormous factory that produces 450 tons of frozen food each day; he follows the production of frozen potato waffles, from the arrival of 25 tons of potatoes right through dispatch.

Gregg Wallace lends a hand unloading a tanker of sugar, and follows its path through a factory to learn how the workers transform it into sweets.

David Attenborough explains how humans help plants that are facing extinction, from projects in Africa to re-seeding the landscape to rebuilding a Brazilian rainforest tree.

Steve travels to Tornado Alley, Texas; Steve goes fishing for an alligator gar, the largest fresh water fish in North America.

Steve goes diving with great white sharks off Guadalupe Island.

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

Dr. Barry gets married; an eagle needs surgery; Hope releases the deer that arrived as fawns.

Journey along the MacKenzie River Delta southwest following the winter ice road before ending in the transportation and cultural hub of the area, Inuvik.

The history of the formation of the world's largest freshwater lake system reveals many mysteries surrounding the geological phenomenon.

Dr. Barry gets married; an eagle needs surgery; Hope releases the deer that arrived as fawns.

Journey along the MacKenzie River Delta southwest following the winter ice road before ending in the transportation and cultural hub of the area, Inuvik.

The history of the formation of the world's largest freshwater lake system reveals many mysteries surrounding the geological phenomenon.

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

Gregg Wallace joins a human production line in the largest sports shoe factory in the U.K. to see how they put together 27 different pieces made from eight different materials.

Scientists explore how to protect the earth when solar storms destroy earthbound technologies and send satellites crashing to earth.

Steve encounters one of the most feared predators in Africa, the spotted hyena.

In Sri Lanka, Steve and the crew head to the Yala National Park to search for the elusive Sri Lankan leopard; the mugger crocodile.

Before heading to Paris to learn about its tap water system, Zac joins friend Anna Kendrick for a lesson in H2O from a water sommelier in Los Angeles.

Gregg Wallace explores an enormous factory that produces 450 tons of frozen food each day; he follows the production of frozen potato waffles, from the arrival of 25 tons of potatoes right through dispatch.

Gregg Wallace joins a human production line in the largest sports shoe factory in the U.K. to see how they put together 27 different pieces made from eight different materials.