Steve heads into Yucatan, Mexico, on the trail of the ancient Maya, uncovering secrets and artifacts.

The Earth's surface is changing faster than ever in human history: cities grow, forests disappear and glaciers melt; a man feeds thousands of parakeets in a city; in Sumatra, a female orangutan and her daughter face life in a forest under threat.

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.

Soaring high above the incredible landscapes along BC's Kootenay border region.

The ancient Aztec legend of Popocatépetl.

In Indonesia, the air is 40 times above safe levels for humans and sulphuric acid vents from the ground in dense, yellow clouds; small volcanoes are reported to erupt every 15 minutes.

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.

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.

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.

British comedian and travel enthusiast Griff Rhys Jones explores the Frozen Wilds of Canada's North, in the province of Manitoba. From Winnipeg to Churchill, he travels from the Country's coldest City, to a town with more polar bears than people. He tries his hand at dog-sledding and does his best not to freeze, all the while exploring what it is that entices people to the cold, and why the North is so important to Canada.

Alaskans power through the dog days of summer.

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.

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 explores a coffee factory that produces 175,000 jars of coffee everyday; Cherry learns about coffee chemistry.

Gregg Wallace is at Britain's biggest brewery, which produces three million pints of beer a day; he follows the production of Britain's best-selling lager, and gets to grips with brewing terms.

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.

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.

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.

Asia is the most mountainous continent on earth; from the tropical south to its barren centre, its highest places are home to some of our planet's most remarkable wildlife.

Brian learns that the solar system was once home to two blue planets.

Remote islands offer sanctuary; pygmy three-toed sloth resides on a Caribbean island; nesting albatross thrive in isolation.

Asia is the most mountainous continent on earth; from the tropical south to its barren centre, its highest places are home to some of our planet's most remarkable wildlife.

Brian learns that the solar system was once home to two blue planets.

Remote islands offer sanctuary; pygmy three-toed sloth resides on a Caribbean island; nesting albatross thrive in isolation.

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.

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 explores a coffee factory that produces 175,000 jars of coffee everyday; Cherry learns about coffee chemistry.

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.

Two tiny orphans struggle to survive; Hope takes a second swing at a release gone wrong.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

Some of the world's greatest scientists devise scenarios for destroying Earth.

A most unusual fawn arrives on Hope's doorstep; a graveyard is the spooky setting for an unlikely reunion.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

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.

The differences between the Northern and Southern Rockies.

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

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

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

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

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

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

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

Sardinia boasts a notable number of centenarians, causing Zac to rethink his views on nutrition as he ponders how the locals live such long healthy lives.

The Earth's surface is changing faster than ever in human history: cities grow, forests disappear and glaciers melt; a man feeds thousands of parakeets in a city; in Sumatra, a female orangutan and her daughter face life in a forest under threat.

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

Sardinia boasts a notable number of centenarians, causing Zac to rethink his views on nutrition as he ponders how the locals live such long healthy lives.

The Earth's surface is changing faster than ever in human history: cities grow, forests disappear and glaciers melt; a man feeds thousands of parakeets in a city; in Sumatra, a female orangutan and her daughter face life in a forest under threat.

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

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.

A look at the extraordinary riches and wonders of the polar regions and the people that have been visiting them for thousands of years.

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.

Gordon Buchanan returns to Russia to help Dr. Victor Lukarevsky prepare rehabilitated lynx for release back in the wild.

Two members of Hope's team travel to England to discover new techniques and make allies on the front lines of animal rescue.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

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.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

Escape with us on a thrilling journey down the river that forged North America ... the St. Lawrence. From the grandeur of the Great Lakes to the picturesque 1000 Islands and through the vibrant, historic cities of Montreal and Quebec. Past rugged landscapes and into the world's largest estuary. To sailors, kayakers and whale watchers the river is part playground, part paradise. Sailing by castles, diving for shipwrecks and rowing the open water.

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.

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

A series of violent and dramatic processes leads to the development of the universe, eventually leading to the existence of man.

The mystery of where water comes from or how it arrived on Earth.

How hurricanes begin and end and how technological advances are helping combat the dangers they pose.

The 2008 Super Tuesday tornado outbreak is investigated to see why the storms occurred mid-winter and why tornados remain so enigmatic.

A team of astronomers determine the ultimate fate of Earth, several billion years from now.

Missions are heading to Jupiter to discover how planets form and to find out if there is life on the planets four largest moons.

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

The anticipation of the annual Great Migration is being felt by all of the Serengeti's families as they wait with great desperation for it to arrive; the land continues to get hotter and hunger starts to bite as food becomes even more scarce.

The surprising similarities humans share with whales; Steve goes on an underwater expedition to learn about singing humpbacks, matriarchal sperm whales and playful dolphins and examines how humans early fear of whales eventually turned to wonder.

Gregg Wallace goes to a historic factory in Germany that produces 600,000 pencils a day; at materials intake, he is astonished that the main material in a pencil is not lead but graphite; he helps mix this with clay to produce a 250-kilo batch.

The anticipation of the annual Great Migration is being felt by all of the Serengeti's families as they wait with great desperation for it to arrive; the land continues to get hotter and hunger starts to bite as food becomes even more scarce.

The surprising similarities humans share with whales; Steve goes on an underwater expedition to learn about singing humpbacks, matriarchal sperm whales and playful dolphins and examines how humans early fear of whales eventually turned to wonder.

Gregg Wallace goes to a historic factory in Germany that produces 600,000 pencils a day; at materials intake, he is astonished that the main material in a pencil is not lead but graphite; he helps mix this with clay to produce a 250-kilo batch.

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.

Borneo is the richest rainforest island of all; home to 40,000 species of plants and animals, 6,000 of them are unique, and more are discovered almost daily.

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.

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.

A bobcat kitten needs Hope's help but this little orphan causes big headaches.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

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.

Hope Swinimer rescues, rehabilitates and releases thousands of animals while struggling to make ends meet.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

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.

Scientists explore whether Earth's estranged twin Venus could be a vision of our planet's future.

Some of the world's greatest scientists devise scenarios for destroying Earth.

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.

Wandering in the spaces between and beyond the planets, where countless worlds exist without any light at all; peeking inside hidden realms that stretch halfway to the nearest star and find out what lies outside the reaches of the most powerful telescopes.

Exploring powerful lightning, mountains with strange, metallic frosts and monsoon rains on a moon that is a billion miles away from Earth.

Professor Brian Cox explores the solar system's frozen worlds; he meets the dwarf planet where mountains of solid ice float across the surface, the black and white moon painted with frost and a world illuminated by a strange form of ice.

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.

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.

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

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

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

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

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

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

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

The Namib Desert is one of the oldest deserts of all; it's also one of the most diverse; with 50-degree temperatures and half a millimetre of rainfall annually.

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.

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

Preparations for Hope's open house are derailed when a patient goes missing; the event may be too successful for its own good.

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

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.

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

The best kept secrets of Nova Scotia.

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.

Hannah gains access to a top-secret site where anonymous staff and the latest tech work to make the British passport one of the most secure documents on the planet; she reveals the World War I spy craft hidden in the pages of every passport.

Hannah takes a look at the vacuum cleaner; she goes behind the scenes with Dyson and discovers how the motor in their latest vacuum spins nine times faster than that of a Formula One race car.

With over six billion of them across the planet, smartphones have changed the modern world; with rare access to electronics giant Samsung, Hannah uncovers the technological game changers that have made the smartphone a reality.

Hannah Fry discovers the hidden WWII radar technology that heats up baked beans; she learns the legend of the melted candy bar in an engineer's pocket that kick-started a kitchen revolution; she demonstrates why microwaves zap food but not people.

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.

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.

Scientists uncover clues at a fossil dig site in North Dakota that reveal details about the day an asteroid struck Earth and wiped out the dinosaurs.

Exploring fossils from a North Dakota site that may reveal what happened when an asteroid struck Earth and wiped out the dinosaurs.

In the Philippines, the Taal volcano violently erupts; a snowboarder in Utah rescues himself from a snowy mountain; in the Grand Canyon, mud and rocks barrel down on a group of tourists.

Alaskans power through the dog days of summer.

As the sun fades across the land, Alaskans brace for Dark Winter's return.

In the Philippines, the Taal volcano violently erupts; a snowboarder in Utah rescues himself from a snowy mountain; in the Grand Canyon, mud and rocks barrel down on a group of tourists.

Alaskans power through the dog days of summer.

As the sun fades across the land, Alaskans brace for Dark Winter's return.

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.

At the very end of East Africa's Great Rift Valley, there's a "land that time forgot" ; the rolling grasslands of the Luangwa Valley.

The remarkable story of how the Hubble Space Telescope has revealed the awe and wonder of our universe.

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

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

Nova Scotia's Southern coast.

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.

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

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

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.

Exploring the worst mass extinction the planet has ever seen, when as much as 90% of all species died 252 million years ago; this moment in Earth's history took life to the brink, wreaking havoc and destruction on an unprecedented scale.

Earth's journey into the deep freeze starts with fire over 800 million years ago when long before the age of the dinosaurs, before there was even animal life, the giant supercontinent Rodinia breaks up.

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.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

How dramatic twists in Earth's story enabled humans to go from being part of nature to controlling it.

A look at Isaac Newton;a visit to CERN.

Brian explores the sun's rule over every world in the solar system.

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.

Brian explores the sun's rule over every world in the solar system.

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.

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.

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

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.

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

The vast and diverse terrain that lies at the border of Canada and the United States.

Japan is home to two of the top five most dangerous volcanoes on the planet.

For people who live on active volcanoes, life has an element of impermanence to it.

Revealing the masterpieces that about in the universe.

Hubble's Canvas reveals the masterpieces that abound in the universe.

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.

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.

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

A look at the extraordinary riches and wonders of the polar regions and the people that have been visiting them for thousands of years.

Borneo is the richest rainforest island of all; home to 40,000 species of plants and animals, 6,000 of them are unique, and more are discovered almost daily.

The Namib Desert is one of the oldest deserts of all; it's also one of the most diverse; with 50-degree temperatures and half a millimetre of rainfall annually.

At the very end of East Africa's Great Rift Valley, there's a "land that time forgot" ; the rolling grasslands of the Luangwa Valley.

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

Gregg Wallace goes to a historic factory in Germany that produces 600,000 pencils a day; at materials intake, he is astonished that the main material in a pencil is not lead but graphite; he helps mix this with clay to produce a 250-kilo batch.

Asia is the most mountainous continent on earth; from the tropical south to its barren centre, its highest places are home to some of our planet's most remarkable wildlife.

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.

Explorers head to Greenland in the Arctic, where they kayak through the world's largest fjord during the spring melt - the most dangerous time of the year.

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.

Explorers head to Greenland in the Arctic, where they kayak through the world's largest fjord during the spring melt - the most dangerous time of the year.

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.

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.

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.

The remarkable story of how the Hubble Space Telescope has revealed the awe and wonder of our universe.

Exploring the landscape and archaeology of Alberta's foothills and badlands from Calgary to Drumheller.

Elk and moose live beside bears and wolves where the mountains cross international borders.

Animals living in the harsh conditions of the mountain peaks.

"Hubble's Canvas" reveals the masterpieces that abound in the universe.

Hubble's Canvas reveals the masterpieces that abound in the universe.

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.

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.

As the sun fades across the land, Alaskans brace for Dark Winter's return.

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.

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.

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 explores a coffee factory that produces 175,000 jars of coffee everyday; Cherry learns about coffee chemistry.

Gregg Wallace is in Essex at an enormous cereal bar factory, which produces 400,000 fruit- and nut-packed treats a day; Gregg follows production from the arrival of two tonnes of macadamia nuts all the way through to dispatch.

When Earth first formed from clouds of dust and gas 4.6 billion years ago, it was devoid of an atmosphere, an inhospitable rock floating in the black void of space.

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.

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

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

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

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

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

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

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.

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.

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 explores a coffee factory that produces 175,000 jars of coffee everyday; Cherry learns about coffee chemistry.

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

A journey along the geological marvel that is the Bay of Fundy coastline.

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

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

An aerial view of Cape Breton Island from the Canso Causeway to the Cape Breton Highlands.

Strange aquatic mammals populating a river in Columbia; A ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; A Boeing 727 jetliner hidden in a pine forest; A giant, unusual pattern is discovered in the Nevada desert.

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.

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.

A danger zone in space above the South Atlantic where lights flash and satellites go haywire; astronauts' first-hand accounts.

In the remote reaches of Asia's frozen north, creatures must overcome unique challenges, finding exceptional ways to thrive in a hostile world that pushes life to its very limits.

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

Explorers head to Greenland in the Arctic, where they kayak through the world's largest fjord during the spring melt - the most dangerous time of the year.

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.

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.

Zac and Darin head to Peru to delve into potato cryopreservation, biopiracy and the sport of sandboarding.

How Earth's cosmic backyard emerged from chaotic clouds of gas; two extraordinary wonders on Earth.

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.

Zac and Darin head to Peru to delve into potato cryopreservation, biopiracy and the sport of sandboarding.

How Earth's cosmic backyard emerged from chaotic clouds of gas; two extraordinary wonders on Earth.

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.

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.

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.

A danger zone in space above the South Atlantic where lights flash and satellites go haywire; astronauts' first-hand accounts.

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.

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

Northumberland Strait.

An enormous fiery vortex in Redding, California, the island nation of Malta loses a natural treasure, a mysterious radioactive hotspot is discovered near Chernobyl, and an unknown force lays waste to a mountain forest in Italian Alps.

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 loyalist city of Saint John and international borders beyond, one of the worlds most famous waterways.

A long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood red lake on a remote Greek island, and an eerie pink glow emulating form the middle of the Pacific Ocean.

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 receives a load of tea leaves from Kenya and follows their journey through the factory that produces one quarter of all the tea drunk in Britain.

Many leading scientists believe there's a possibility to soon detect the first evidence of extraterrestrial life.

Zac and Darin head to Peru to delve into potato cryopreservation, biopiracy and the sport of sandboarding.

How Earth's cosmic backyard emerged from chaotic clouds of gas; two extraordinary wonders on Earth.

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.

Gregg Wallace receives a load of tea leaves from Kenya and follows their journey through the factory that produces one quarter of all the tea drunk in Britain.

In southeast Alaska, there's an ice-bound Eden that harbors possibly the richest temperate rainforests of all.