With heightened senses verging on superpowers, over two thirds of mammal species are creatures of the night with some even returning to the dark side as their daytime world gets more and more crowded.

Brian learns how Saturn began its life as a strange planet of rock and ice, born outside the snow line, with an abundance of building materials.

The secretive lives of mountain animals; snow leopards come together to help a mother and cub, trapped between rival males.

Gregg Wallace is in Italy, hitching a lift on a train carrying over a thousand tons of wheat to the largest dried pasta factory in the world.

In London, Gregg visits Europe's largest biscuit factory, where 80 million biscuits are produced each day; he witnesses the production of chocolate digestives from the arrival of the flour to the dispatch of the final product.

Gregg Wallace uncovers the mysteries behind fish fingers and their production, including a factory that processes 80,000 cod fish fingers a day.

Gregg Wallace is at one of the world's biggest sauce factories, located in the Netherlands; its annual output is a quarter of a million tons of condiments; in the meantime, Cherry Healey is making the glass jars Gregg needs for his mayonnaise.

A moose on the loose raises a ruckus; a permanent resident becomes a lovable nuisance.

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

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.

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.

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 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.

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.

With heightened senses verging on superpowers, over two thirds of mammal species are creatures of the night with some even returning to the dark side as their daytime world gets more and more crowded.

Brian learns how Saturn began its life as a strange planet of rock and ice, born outside the snow line, with an abundance of building materials.

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

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.

After being raised on the ice in winter, emperor penguin chicks find themselves abandoned by their parents in spring; to survive, they must find their own way across the treacherous sea ice to the rich waters of the Southern Ocean.

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.

Levison and Alberto begin their journey on the northern shores of Mexico's Yucatan Peninsula.

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.

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.

Levison and Alberto begin their journey on the northern shores of Mexico's Yucatan Peninsula.

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 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.

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.

After being raised on the ice in winter, emperor penguin chicks find themselves abandoned by their parents in spring; to survive, they must find their own way across the treacherous sea ice to the rich waters of the Southern Ocean.

At the top of the planet lies the Arctic Ocean; after four months of winter darkness, the sun returns to reveal a frozen ocean covered in ice; mother polar bears emerge from their hillside dens and lead their cubs down to the sea ice to hunt.

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

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

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.

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 UK and a dreaded predator in the Pacific Ocean are discovered by accident using drones.

Behind nature's winter wonderland are some of the toughest places to survive. Hidden cameras in a new generation of Spy Creatures reveal the fascinating behaviors of animals from penguins to parrots, polar bears to otters, wallabies, and wombats.

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

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.

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.

Levison and Alberto begin their journey on the northern shores of Mexico's Yucatan Peninsula.

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

At the top of the planet lies the Arctic Ocean; after four months of winter darkness, the sun returns to reveal a frozen ocean covered in ice; mother polar bears emerge from their hillside dens and lead their cubs down to the sea ice to hunt.

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

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

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.

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

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

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.

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

Behind nature's winter wonderland are some of the toughest places to survive. Hidden cameras in a new generation of Spy Creatures reveal the fascinating behaviors of animals from penguins to parrots, polar bears to otters, wallabies, and wombats.

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.

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.

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

Tending to a stressed muskrat trapped in a fence and a slate of slippery patients.

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.

A Nazi weapon designed to turn the tides of WWII in Northern France; a secret Russian military tower in the shadow of the Chernobyl disaster; a forgotten Australian tunnel rumored to hide a nuclear lab; something shocking buried under Alcatraz.

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

Exploring animal emotion in all its forms, from the love and devotion of an elephant family, to dancing birds of paradise and flirting polar bears.

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

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.

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

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

With heightened senses verging on superpowers, over two thirds of mammal species are creatures of the night with some even returning to the dark side as their daytime world gets more and more crowded.

David Attenborough joins a team of researchers in their efforts to discover the secrets of a 200-million-year-old giant sea dragon fossil.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

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

David Attenborough joins a team of researchers in their efforts to discover the secrets of a 200-million-year-old giant sea dragon fossil.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

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

Found on every continent, mountains create unique frozen worlds, home to extraordinary animals that must overcome the crushing conditions of the cold.

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

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 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.

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

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.

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.

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.

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

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.

Without volcanoes, life on Earth would never have begun; they are responsible for both the planet's breathable atmosphere and the oceans; mineral-rich ash from regular eruptions fertilize the land.

How wildlife adapts for survival to the seasonal shifts in the sun's intensity, from wood frogs that can freeze and thaw to Arctic wolves that thrive in the chilly darkness.

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.

Alaskans look to restock their food supplies as spring brings longer days.

While some fishers struggle to finish the fall season in wild weather, the Kristjansons make a pilgrimage to their ancestral home, Iceland; back home, an early winter storm slams Gimli and commercial fishers risk life and limb.

Australia's Kangaroo Island is ravaged by deadly bushfires; in Kansas, two tornado chasers let a tourist to ride along with them as they intercept a monster tornado; two sailors navigate cyclone-force winds.

Alaskans look to restock their food supplies as spring brings longer days.

While some fishers struggle to finish the fall season in wild weather, the Kristjansons make a pilgrimage to their ancestral home, Iceland; back home, an early winter storm slams Gimli and commercial fishers risk life and limb.

Australia's Kangaroo Island is ravaged by deadly bushfires; in Kansas, two tornado chasers let a tourist to ride along with them as they intercept a monster tornado; two sailors navigate cyclone-force winds.

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.

Exploring animal emotion in all its forms, from the love and devotion of an elephant family, to dancing birds of paradise and flirting polar bears.

Tools, medicine and drugs can all be found in animal societies, including chimps that throw stones and hunt with spears, elephants that use branches as fly swatters, and lemurs that get intoxicated on the secretions of millipedes.

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

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

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.

Strange markings in the remote reaches of Northern Finland; drones find a Manhattan-sized mystery in the depths of a Vietnamese cave; secrets are no longer hidden in the Antarctic; a lost sky-high world in Mozambique gets a visit from above.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; clues to what killed a once-vibrant Pennsylvania mining town; an aerial glimpse of New York's forgotten ghost town; an Italian Renaissance reduced to dust.

There are not five separate oceans, but one; its waters linked by powerful forces that keep them on the move.

Humans are changing our planet so rapidly, it's affecting earth's life support systems: our weather, our oceans and the living world.

A journey from the intense heat of the tropics to the planet's frozen poles; life has spread to almost every part of the ocean, but there are many different worlds within it and each presents unique challenges.

An epic journey into the unknown, a realm that feels almost like science fiction.

Coral Reefs are vibrant undersea cities where life has found extraordinary ways to survive.

The big blue is the world's greatest wilderness, far from shore and many kilometers deep.

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

Coasts are the most changeable habitats of the ocean world.

Brian examines the universal laws of nature; planet size can make a difference between life and death.

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.

Brian examines the universal laws of nature; planet size can make a difference between life and death.

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.

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.

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.

An illustration of how the Arctic springs to life after nearly seven months in total darkness.

Stunning underwater video taken from the wildest expeditions of the world's greatest dive shops highlight the ocean's most spectacular species.

The Bahamas are surrounded by coral reefs and underwater caves with sharks, turtles, and dolphins.

A field trip to do a bison herd check near her Métis homelands sheds more light on who Dr. Savannah is; she dives deeper into her identity as a Métis woman.

Dr. Savannah treats a hound after the poor pup is kicked in the head by a horse; she must also race against time to treat and return an injured fawn into the wild after a cougar attacked it.

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.

British comedian and travel enthusiast Griff Rhys Jones explores the prairies and vast sprawling plains of both Saskatchewan and Alberta provinces. He discovers that far from empty, they hide a diversity of riches, from ancient buffalo herds to dinosaur fossils and acres of cultivated farmland.

Pioneers strive to protect the ocean from the effects of human activity.

A group of chimps in Senegal is led by an alpha male named Dave.

A colony of emperor penguins arrive in Atka Bay, after three months at sea, to raise their chicks through the coming winter.

The leader of a once mighty lion pride must now battle for their very survival; a look at whether or not this extraordinary lioness can save her family from disaster.

The leader of a great Painted Wolf family is growing old and her power to keep the peace is waning; a feud with an ambitious daughter threatens to bring the dynasty down.

Tigress Raj Bhera has four new cubs whom she must protect while battling rivals who want to steal her lands and overthrow her.

Gordon Buchanan joins the Pazhetnovs, a pioneering family of biologists, in snowy Russia to rehabilitate six orphaned grizzly cubs back to the wild.

Gordon Buchanan begins training the cubs for their new life in the wilderness; with just ten weeks left before release, little Pasha is still struggling.

For her pups to survive, a young meerkat queen must unite her family in the face of rivals, predators and immense dust storms in the harsh beauty of the Madgadikgadi salt pans of Botswana.

Steve joins forces with shark scientist Mauricio Hoyos to discover where shark mothers give birth and help protect a new generation of these ocean giants in the Eastern Pacific.

For her pups to survive, a young meerkat queen must unite her family in the face of rivals, predators and immense dust storms in the harsh beauty of the Madgadikgadi salt pans of Botswana.

Steve joins forces with shark scientist Mauricio Hoyos to discover where shark mothers give birth and help protect a new generation of these ocean giants in the Eastern Pacific.

The 50th anniversary of the Apollo 11 moon landing in the place where it all began; physicist Dr. Brian Cox and host Dara Ó Briain travel to Cape Canaveral, Fla., for a look inside the historic mission and the future of space exploration.

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.

Devon Island in Nunavut is the largest uninhabited island in the world; the icy landscape is so barren that NASA uses it to simulate conditions on Mars.

Clear waters, deep reefs, and dangerous caves.

Exploring the wild blue caribbean waters of cozumel, from the paso del cedral coral reef to the world's longest subterranean underwater cave system.

Dogs indeed account for more than half of the patients at Rocky Rapids Clinic; Dr. Savannah works tirelessly to keep rural Alberta's four-legged canine friends healthy and safe.

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.

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 UK and a dreaded predator in the Pacific Ocean are discovered by accident using drones.

Griff uncovers what it is about living in the Pacific Northwest that makes people strive for happiness and what he learned on his journey across Canada.

For her pups to survive, a young meerkat queen must unite her family in the face of rivals, predators and immense dust storms in the harsh beauty of the Madgadikgadi salt pans of Botswana.

A mother puma must battle rivals, tackle prey nearly three times her size and endure the wild mountain weather of Patagonia in her bid to raise four cubs, her biggest litter yet.

In Amboseli, Kenya, an incredibly rare drought event pushes a struggling elephant family to its limits as their only chance to save their dynasty is to work together and overcome the challenge of a lifetime.

On Zambia's plains, a cheetah mother and her three growing daughters must travel thousands of kilometers every year to roam their vast territory searching for food; new challenges arise as the wet season arrives and floodwaters advance.

On the vast Zambian plains, a clan of hyenas must pull together to survive; the seemingly desolate territory could be the key to their success, and holding onto it until the wildebeest return will be vital for the clan's survival.

High in the mountains of Morocco lives a descendant of a long line of macaque rulers who has been in charge of her troupe for many winters - one of the longest recorded reigns of an alpha - but this year is likely to be her last.

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

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

Mammals have mastered every environment on Earth, but today the planet is changing rapidly, thanks to one mammal in particular; as humans reshape the planet, mammals must change with it and find surprising ways to survive this new wild.

Professor Brian Cox journeys to the remotest part of the solar system where the mysteries of Saturn, Uranus and Neptune remain in the shadows.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

Mammals have mastered every environment on Earth, but today the planet is changing rapidly, thanks to one mammal in particular; as humans reshape the planet, mammals must change with it and find surprising ways to survive this new wild.

Professor Brian Cox journeys to the remotest part of the solar system where the mysteries of Saturn, Uranus and Neptune remain in the shadows.

From the jungles of Brazil to Costa Rica, animals face life in the most competitive place on Earth.

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.

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

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

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.

As seen from space, a crater in Turkmenistan, is on fire; drones reveal perfect circles in the Namibian desert; A puzzle is solved by a World War 2 code breaker; Mystery of Death Valley's self-moving stones; Utah's strange electric blue ponds.

A remote island linked to one of the world's most famous aviation mysteries; thousands of shipwrecks in the Bermuda triangle; a history lost and found in the South Pacific; a 10,000-year-old mystery in the murky depths of the Yucatan Peninsula.

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.

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.

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.

Mammals have mastered every environment on Earth, but today the planet is changing rapidly, thanks to one mammal in particular; as humans reshape the planet, mammals must change with it and find surprising ways to survive this new wild.

Professor Brian Cox journeys to the remotest part of the solar system where the mysteries of Saturn, Uranus and Neptune remain in the shadows.

Steve joins forces with shark scientist Mauricio Hoyos to discover where shark mothers give birth and help protect a new generation of these ocean giants in the Eastern Pacific.