Leaders and representatives of Aboriginal communities show Zac and Darin how indigenous cultures live to protect and preserve the land.

Levison and Alberto visit the landscapes, colonial cities, active volcanoes and mountains of Nicaragua and Costa Rica.

Levison Wood travels through Armenia and Europe's forgotten warzone Nagorno-Karabakh.

Gregg Wallace visits the biggest cider factory in the world, which produces more than 350 million litres each year; the scale of production blows his mind, as at each turn he's confronted with huge machinery and incredible processes.

A day at the Pantherella factory in England reveals the teamwork and machine power required to produce luxury socks at an industrial scale.

Trekking across the planet's most hostile frozen zone: Antarctica; getting to know ice.

Going back to the far North of the planet where the largest landhabitat on Earth exists, home to great Boreal forests and the barren tundra.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

Hope revisits a completely rebuilt rehab and reveals new plans; Hope and Barry discover a problem plaguing massive marine mammals.

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

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.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

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.

Gregg Wallace visits a factory in rural Somerset that produces a million pots of yogurt every day.

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.

Leaders and representatives of Aboriginal communities show Zac and Darin how indigenous cultures live to protect and preserve the land.

Levison and Alberto visit the landscapes, colonial cities, active volcanoes and mountains of Nicaragua and Costa Rica.

Levison Wood travels through Armenia and Europe's forgotten warzone Nagorno-Karabakh.

Gregg Wallace visits a factory in rural Somerset that produces a million pots of yogurt every day.

Going back to the far North of the planet where the largest landhabitat on Earth exists, home to great Boreal forests and the barren tundra.

Steve and the team head to Hawaii where he comes face-to-face with an oceanic white tip shark.

In the Bahamas a tiger shark gets a little too close for comfort.

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.

Steve and the team head to Hawaii where he comes face-to-face with an oceanic white tip shark.

In the Bahamas a tiger shark gets a little too close for comfort.

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 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.

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

Brett and Cliff aim to put themselves through the experience of losing one's ship and needing to be rescued.

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.

Hope rallies the team to release a herd of white-tailed deer; winter brings a mysterious influx of snowy owls.

Hope's first orphaned mammal arrives earlier than ever; a mysterious patient from last year returns.

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

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.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

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.

A tour of the largest malt loaf factory in the world reveals the secrets of mass-producing the British teatime treat at a rate of half a million a day.

Scientists search for the smallest thing in our universe.

Steve and the team head to Hawaii where he comes face-to-face with an oceanic white tip shark.

In the Bahamas a tiger shark gets a little too close for comfort.

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.

A tour of the largest malt loaf factory in the world reveals the secrets of mass-producing the British teatime treat at a rate of half a million a day.

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.

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

Conservation advocates take risks to save wildlife by exploring remote jungles, going undercover to catch criminals and making a microlight journey to lead endangered birds to safety.

In many of the world's natural wonders there is an abundance of animals, which can either be a threat to the people who live there or provide a means of survival.

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

Conservation advocates take risks to save wildlife by exploring remote jungles, going undercover to catch criminals and making a microlight journey to lead endangered birds to safety.

In many of the world's natural wonders there is an abundance of animals, which can either be a threat to the people who live there or provide a means of survival.

Coming face to face with the scientists bearing witness to history's profound climate shift; pondering the effect these changes have on Earth's human and animal communities, mapping the destruction from space and learning how to save the planet.

Isolated for millions of years, Australia has a variety of unique animals, including the most dangerous bird in the world, kangaroos, wombats, koalas and predators.

Gregg Wallace visits a factory in rural Somerset that produces a million pots of yogurt every day.

A tour of the largest malt loaf factory in the world reveals the secrets of mass-producing the British teatime treat at a rate of half a million a day.

A muskrat trapped in a fence needs Hope's help and slippery patients give the team a tough time.

A baby owl needs to be reunited with its parents; a volunteer returns to the rehab in a new role; a duck rescue goes wet and wild.

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.

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.

Examine strange relics forgotten by time. Visit a perturbing circle of stone in the Golan Heights, a mountain of headless statues in Turkey, a castle left to crumble in the Saudi Arabian desert, and a time-worn secret in the wilds of Peru.

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.

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.

Gregg Wallace visits the Ercol factory in Buckinghamshire, an area associated with furniture making since the 19th century. Brits spend a staggering £300 million pounds each week on furniture.

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.

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

Conservation advocates take risks to save wildlife by exploring remote jungles, going undercover to catch criminals and making a microlight journey to lead endangered birds to safety.

In many of the world's natural wonders there is an abundance of animals, which can either be a threat to the people who live there or provide a means of survival.

Gregg Wallace visits the Ercol factory in Buckinghamshire, an area associated with furniture making since the 19th century. Brits spend a staggering £300 million pounds each week on furniture.

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.

Alaskans confront the environment and themselves as winter bears down.

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.

In Tennessee, a violent tornado touches down in downtown Nashville - interrupting a live news broadcast and raking through the city; at the Hamma Hamma Falls, a kayaker races to rescue his friend from a terrifying ordeal.

Alaskans confront the environment and themselves as winter bears down.

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.

In Tennessee, a violent tornado touches down in downtown Nashville - interrupting a live news broadcast and raking through the city; at the Hamma Hamma Falls, a kayaker races to rescue his friend from a terrifying ordeal.

Scientists search for the smallest thing in our universe.

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.

Tiger cubs that are only a few days old are prey for almost anything; hidden cameras follow the lives of tiger cubs growing up in India's jungle.

The now half-grown cubs must learn the skills they'll need as adults.

Busier than ever, Hope and the team struggle to handle the huge caseload; a volunteer helps an injured bird.

Starting up a raccoon adoption agency; Hope tries to make peace between wild enemies; a kidnapped fawn needs to be reunited with its mother.

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

From the district of Inuvik - travel west - above the MacKenzie Delta - open tundra - and the Richardson Mountains - to the northernmost land separating Canada and the US.

Take a deep dive into watery enigmas. Glide over a sunken Italian city, a unique underwater cemetery in the Florida Keys, a yellow brick road to nowhere in the depths of the South Pacific, and puzzling rocky constructions off the coast of Australia.

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.

From the district of Inuvik - travel west - above the MacKenzie Delta - open tundra - and the Richardson Mountains - to the northernmost land separating Canada and the US.

A visit to the Dr. Martens factory in England reveals how the plant mass-produces its popular 1460 leather boots at a rate of 3,500 pairs a week.

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.

Alaskans confront the environment and themselves as winter bears down.

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.

In Tennessee, a violent tornado touches down in downtown Nashville - interrupting a live news broadcast and raking through the city; at the Hamma Hamma Falls, a kayaker races to rescue his friend from a terrifying ordeal.

A visit to the Dr. Martens factory in England reveals how the plant mass-produces its popular 1460 leather boots at a rate of 3,500 pairs a week.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.

Brian learns about the oldest planet in the solar system Jupiter, which uses its size to manipulate other planets.

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.

Brian learns about the oldest planet in the solar system Jupiter, which uses its size to manipulate other planets.

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.

Gregg Wallace visits the Ercol factory in Buckinghamshire, an area associated with furniture making since the 19th century. Brits spend a staggering £300 million pounds each week on furniture.

A visit to the Dr. Martens factory in England reveals how the plant mass-produces its popular 1460 leather boots at a rate of 3,500 pairs a week.

More than any other continent, North America is defined by extreme weather and seasonal change; for animals that live here this poses great challenges, but for those with a pioneering spirit it can also offer great rewards.

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 rich mix of coastal towns, islands, inland mountains and seascapes from Nanaimo to Campbell River.

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.

A giant crack in the ice continues to be an obstacle for all crews as they try to set nets in deeper water; Mike and Justin are caught flat-footed when the crack shifts and sends a violent ice quake to shake their location.

Pets need their owners to meet their basic needs, but humans can also gain an emotional benefit from their pets; Dr. Savannah explores the loving connection between humans and their pets when two of her longtime clients lose their beloved ferret.

Dr. Savannah heads to Cambridge Bay, Nunavut in the far Arctic, to offer her expert services at a volunteer vet clinic; it's the only chance the residents will have all year to seek medical advice for their pets.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

Griff Rhys Jones begins his exploration of Ontario and ponders why Canadians are so nice.

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

Trekking across the planet's most hostile frozen zone: Antarctica; getting to know ice.

Going back to the far North of the planet where the largest landhabitat on Earth exists, home to great Boreal forests and the barren tundra.

Coming face to face with the scientists bearing witness to history's profound climate shift; pondering the effect these changes have on Earth's human and animal communities, mapping the destruction from space and learning how to save the planet.

Isolated for millions of years, Australia has a variety of unique animals, including the most dangerous bird in the world, kangaroos, wombats, koalas and predators.

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.

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.

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.

David Attenborough tells the story of the discovery and reconstruction in Argentina of the world's largest known dinosaur, a brand new species of titanosaur. Measuring 37m long, it now holds the record as the biggest animal ever to walk the earth.

With scientists sending space probes to the furthest reaches of the solar system and beyond, the scientific search for alien life has begun; inspired by a childhood love of science fiction, Brian still hopes to hear from ET.

Steve encounters the largest and most sophisticated hunters on the planet; he reveals the ingenious strategies used by whales that gets extraordinary predators in trouble.

David Attenborough tells the story of the discovery and reconstruction in Argentina of the world's largest known dinosaur, a brand new species of titanosaur. Measuring 37m long, it now holds the record as the biggest animal ever to walk the earth.

With scientists sending space probes to the furthest reaches of the solar system and beyond, the scientific search for alien life has begun; inspired by a childhood love of science fiction, Brian still hopes to hear from ET.

Steve encounters the largest and most sophisticated hunters on the planet; he reveals the ingenious strategies used by whales that gets extraordinary predators in trouble.

Brett and Cliff aim to put themselves through the experience of losing one's ship and needing to be rescued.

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.

Scientists search for the smallest thing in our universe.

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 scenic Telegraph Cove, around Cape Scott Provincial Park, and beyond.

It's officially the third-highest snowfall in Manitoba in the last century; commercial fishers are plagued by deep drifts and hidden pockets of slush that can stop them in their tracks; Chris finds out the hard way that traveling alone is a bad idea.

With less than a month left in the fishing season, all crews are desperate to catch their remaining quota, and failing to do so means leaving money on the table; Justin and Mike are fighting to hit their target.

Variety is the spice of life for Dr. Savannah as every day presents a host of new changes, from inner-city wild bird rescues to performing an emergency c-section on a pregnant cow.

Revealing the masterpieces that about in the universe.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

British comedian and travel enthusiast Griff Rhys Jones explores the frozen wilds of Canada's north, in the province of Manitoba.

Alaskans confront the environment and themselves as winter bears down.

A day at the Pantherella factory in England reveals the teamwork and machine power required to produce luxury socks at an industrial scale.

Gregg Wallace visits a factory in rural Somerset that produces a million pots of yogurt every day.

A tour of the largest malt loaf factory in the world reveals the secrets of mass-producing the British teatime treat at a rate of half a million a day.

Gregg Wallace visits the Ercol factory in Buckinghamshire, an area associated with furniture making since the 19th century. Brits spend a staggering £300 million pounds each week on furniture.

A visit to the Dr. Martens factory in England reveals how the plant mass-produces its popular 1460 leather boots at a rate of 3,500 pairs a week.

Steve and the team head to Hawaii where he comes face-to-face with an oceanic white tip shark.

In the Bahamas a tiger shark gets a little too close for comfort.

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

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.

Focusing on faraway landscapes that are bursting with fire and ice; Professor Cox goes on a journey across the solar system for a look at volcanic eruptions so vast they reach into space; learning why these violent explosions hold the keys to life.

Conservation advocates take risks to save wildlife by exploring remote jungles, going undercover to catch criminals and making a microlight journey to lead endangered birds to safety.

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.

Focusing on faraway landscapes that are bursting with fire and ice; Professor Cox goes on a journey across the solar system for a look at volcanic eruptions so vast they reach into space; learning why these violent explosions hold the keys to life.

Conservation advocates take risks to save wildlife by exploring remote jungles, going undercover to catch criminals and making a microlight journey to lead endangered birds to safety.

A day at the Pantherella factory in England reveals the teamwork and machine power required to produce luxury socks at an industrial scale.

Gregg Wallace visits a factory in rural Somerset that produces a million pots of yogurt every day.

A tour of the largest malt loaf factory in the world reveals the secrets of mass-producing the British teatime treat at a rate of half a million a day.

Gregg Wallace visits the Ercol factory in Buckinghamshire, an area associated with furniture making since the 19th century. Brits spend a staggering £300 million pounds each week on furniture.

A new volunteer steps up to the challenge; Hope's first fawn of the year interrupts delicate surgery on an injured owl.

A hurricane slams the rehab, knocking an osprey nest out of its tree; Hope scrambles to save the babies in the middle of the storm.

Heading south from Inuvik, NWT - we embark on one of the world's great road trips - following the Northern half of the Dempster Highway - from Inuvik to the Arctic Circle.

Tracing the southern half of the Dempster Highway, over some of the world's most remote Earthly wonders, from the Arctic Circle on the way to the Klondike River and Dawson City.

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.

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, and spot an immovable waterfall in Mexico.

Tracing the southern half of the Dempster Highway, over some of the world's most remote Earthly wonders, from the Arctic Circle on the way to the Klondike River and Dawson City.

A visit to the Doritos factory in England reveals the processes and machinery that go into creating Chilli Heatwave tortilla chips.

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.

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.

Focusing on faraway landscapes that are bursting with fire and ice; Professor Cox goes on a journey across the solar system for a look at volcanic eruptions so vast they reach into space; learning why these violent explosions hold the keys to life.

Steve encounters the largest and most sophisticated hunters on the planet; he reveals the ingenious strategies used by whales that gets extraordinary predators in trouble.

A visit to the Doritos factory in England reveals the processes and machinery that go into creating Chilli Heatwave tortilla chips.

Asia is the largest and most extreme continent on the planet, stretching from the Arctic Circle to the tropical forests on the Equator.

Eco-innovators introduce Zac and Darin to unique and cost-effective ways to address complex problems and help heal the environment.

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

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

Eco-innovators introduce Zac and Darin to unique and cost-effective ways to address complex problems and help heal the environment.

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

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

A visit to the Dr. Martens factory in England reveals how the plant mass-produces its popular 1460 leather boots at a rate of 3,500 pairs a week.

A visit to the Doritos factory in England reveals the processes and machinery that go into creating Chilli Heatwave tortilla chips.

Asia is the largest and most extreme continent on the planet, stretching from the Arctic Circle to the tropical forests on the Equator.

High above the city of Gibraltar, Barbary macaques, Europe's only non-human primates, live lives full of kidnappings and high drama; in the cemeteries of Vienna Grave Robbing European hamsters do battle with each other for food.

The rehab is up all night with three tiny orphans needing round-the-clock care.

Pondering a doe's potential as a surrogate mother and the chances that two fawns have in the ER.

An exploration of the route that has become known as the Klondike Trail.

Exploring the Carcross Desert, Tatshenshini-Alsek Provincial Park, and the eastern edge of Kluane National Park.

Witness jaw-dropping animal spectacles from high above the Earth. Watch a whirling herd of northern nomads, see undersea behemoths show off in the Pacific shallows, track a US porcine stampede, and confront top ocean predators on the Florida coast.

A vanished Neolithic structure in an Irish farmer's field, an ancient oasis in the remote reaches of a Chinese desert, a centuries-old buried treasure in the U.K. and a dreaded predator in the Pacific Ocean are discovered by accident using drones.

Exploring the Carcross Desert, Tatshenshini-Alsek Provincial Park, and the eastern edge of Kluane National Park.

Gregg Wallace visits the Denby factory in Derbyshire, which has been making pottery since 1809. Brits drink a staggering 195 million mugs of tea and coffee every day, so Gregg is following production of one of the factory's best sellers.

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.

Eco-innovators introduce Zac and Darin to unique and cost-effective ways to address complex problems and help heal the environment.

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

Levison Wood sets out to walk the length of the River Nile from source to sea; his nine-month, seven-million-step journey takes him through jungles, savannah, deserts, cities and war zones in some of Africa's most remote and spectacular locations.

Gregg Wallace visits the Denby factory in Derbyshire, which has been making pottery since 1809. Brits drink a staggering 195 million mugs of tea and coffee every day, so Gregg is following production of one of the factory's best sellers.

High above the city of Gibraltar, Barbary macaques, Europe's only non-human primates, live lives full of kidnappings and high drama; in the cemeteries of Vienna Grave Robbing European hamsters do battle with each other for food.

In Guyana South America Steve searches for the harpy eagle, but stumbles upon an agitated snake.

Steve and the team head to the Pantanal region in Brazil to search for an animal that has eluded Steve his whole life, the jaguar.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

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.

In Guyana South America Steve searches for the harpy eagle, but stumbles upon an agitated snake.

Steve and the team head to the Pantanal region in Brazil to search for an animal that has eluded Steve his whole life, the jaguar.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

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.

The cubs' mother loses patience as they learn to hunt on their own.

The four categories of cute in the animal kingdom, and the scientific stories behind why animals are cute.

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.

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.

Two tricky patients finally go free; 50 babies are born all at once.

Hope and Dr. Barry break ground on new chapters in their life, Hope rebuilding the rehab and Dr. Barry setting out on his own.

City of Whitehorse to the Kluane National Park.

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.

Unlock military secrets from the air; spot a Nazi weapon designed to turn the tides of war in France; a covert Russian military tower in Chernobyl's shadow; a rumoured nuclear lab buried in Australia; a hush-hush surprise underneath Alcatraz.

Over a hundred big concrete arrows scattered across the U.S.; a giant chalk figure with an oversized phallus on an English hillside; a mysterious hole in the middle of a lake in Southern California.

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.

Gregg visits a factory that churns out fifty thousand litres of dairy ice cream every day, while Cherry Healey enlists an ice hockey team to test the best methods of stopping brain freeze.

Dr. Helen Czerski reveals how the harnessing of heat's power to transform matter has led to some of humanity's greatest achievements, from molten metal that enabled us to make tools to the searing heat of plasmas that offer near unlimited power.

In Guyana South America Steve searches for the harpy eagle, but stumbles upon an agitated snake.

Steve and the team head to the Pantanal region in Brazil to search for an animal that has eluded Steve his whole life, the jaguar.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

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.

Gregg visits a factory that churns out fifty thousand litres of dairy ice cream every day, while Cherry Healey enlists an ice hockey team to test the best methods of stopping brain freeze.

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.

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 team travels to every corner of the planet over the course of five years.

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

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 team travels to every corner of the planet over the course of five years.

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

Icy Antarctica is a land of survivors enduring the most hostile conditions on Earth.

Africa is home to the greatest collection of wildlife on Earth, with a vast tropical rainforest full of life at its heart, but animals face big challenges in this land of plenty.

Gregg Wallace visits the Denby factory in Derbyshire, which has been making pottery since 1809. Brits drink a staggering 195 million mugs of tea and coffee every day, so Gregg is following production of one of the factory's best sellers.

Gregg visits a factory that churns out fifty thousand litres of dairy ice cream every day, while Cherry Healey enlists an ice hockey team to test the best methods of stopping brain freeze.

Hope's open house is bigger than ever; a mysterious visitor leaves a big impression.

Endangered bats need Hope's help, but it means taking unusual steps; Hope's deer release has a bumpy start.

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.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

A Turkish drought reveals a long-lost ancient Basilica and its secrets; a church spire punches through the surface of a toxic sludge in Romania; the hull of a massive ship in the North Sea answers decades old questions.

Nubian pyramids reveal the rise of female power in Ancient Kush; a shocking satellite image uncovers secrets of an ancient ancestral Puebloan site in New Mexico.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

Gregg Wallace visits a huge vacuum cleaner factory in the heart of Somerset. This 32-acre site is a hive of activity where 1.2 million vacuums are made every year. Gregg is following their biggest seller, the Henry vacuum cleaner in bright red.

Meeting the scientists, entrepreneurs, and tech wizards at the heart of the global metamorphosis of 5G; learning how blazing-fast wireless connections will transform home and work; getting a peek at futuristic devices and services.

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 team travels to every corner of the planet over the course of five years.

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

Gregg Wallace visits a huge vacuum cleaner factory in the heart of Somerset. This 32-acre site is a hive of activity where 1.2 million vacuums are made every year. Gregg is following their biggest seller, the Henry vacuum cleaner in bright red.

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.