Kate Winslet, Jacinda Ardern, Alan Carr, Seth Meyers, Cat Burns.

Sandi Toksvig discusses piecemeal topics with Alan Davies, Jimmy Carr, Gyles Brandreth and Sally Phillips.

The topic is parts and Sandi Toksvig is joined by Sara Pascoe, Ed Balls, Johnny Vegas and Alan Davies.

Heavy snow creates a treacherous situation for trekkers in the Himalayan mountains, when an earthquake-triggered avalanche sweeps into a busy base camp; in Australia, category three Cyclone Damien makes landfall and leaves a trail of destruction.

Weird fog blobs seems to rear up at cars on a dusty highway. A man films a vision of an angel in the clouds over Texas. And what are the skull-sized Ice eggs that suddenly appear on a beach?

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

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

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.

The failed controlled demolition of The Clarion hotel in Las Vegas; substandard soil conditions and reclaimed land are among the reasons for construction site collapses; how construction, urbanization and heavy equipment contribute to sinkholes.

Sandi Toksvig discusses piecemeal topics with Alan Davies, Jimmy Carr, Gyles Brandreth and Sally Phillips.

Paid programming.

A contractor left a dangerous mess in Kristina's backyard: a polluted pond, a jagged fire pit, and uneven stairs; the Holmes crew turns this disaster zone into a welcoming oasis where her twin daughters can heal from a traumatic accident.

Breeder Joe Spicer and trainer Neil McDonald play matchmaker for five sweet, energetic kelpies, as they strive to pick the perfect handler for each one.

A cat named Louis requires major leg surgery, a Kunekune pig named Crumbfoot needs emergency X-rays, and Savannah heads out to conduct a wild horse study, looking at how horses treat their own parasites through a process known as Zoopharmacognosy.

Touring the new clinics in Bendigo, where an eagle and a foal get a second chance.

Caroline Aherne narrates as some of Britain's most opinionated viewers comment freely.

Sandi Toksvig looks at animals that start with the letter P with guests Alan Davies, Phill Jupitus, Danny Baker and Teri Hatcher.

Sandi Toksvig takes a look at the topic of peril with panelists Aisling Bea, Lee Mack, Jason Manford and Alan Davies.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Kate Winslet, Jacinda Ardern, Alan Carr, Seth Meyers, Cat Burns.

Sandi Toksvig discusses piecemeal topics with Alan Davies, Jimmy Carr, Gyles Brandreth and Sally Phillips.

The topic is parts and Sandi Toksvig is joined by Sara Pascoe, Ed Balls, Johnny Vegas and Alan Davies.

Dig up ancient Indigenous homes after a landslide hits British Columbia and explore a lost Puerto Rican ceremonial centre exposed by flooding. Visit an eerie burial site in the Bahamas, then marvel at a well-preserved Roman theatre in Croatia.

Cameras capture a towering 1,600-foot pillar of flame erupting from the Caspian Sea off the coast of Azerbaijan; experts investigate a potential link to the nation's weapons arsenal and military aspirations over disputed neighboring territory.

A buried ship, wartime cellars, jar burials and mass graves are excavated.

Witness a booming Tongan tsunami, a wind-driven Hawaiian inferno, and a deadly Texas flood from space. Then zoom in and see how a loose cable and colossal ships caused the shocking collapse of the Francis Scott Key Bridge in Baltimore, Maryland.

Dig up ancient Indigenous homes after a landslide hits British Columbia and explore a lost Puerto Rican ceremonial centre exposed by flooding. Visit an eerie burial site in the Bahamas, then marvel at a well-preserved Roman theatre in Croatia.

A young boy is swallowed by a sand dune and miraculously survives; A fog lasts five days and kills thousands in London; The largest ship in the US Navy vanishes during World War I.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings.

The failed controlled demolition of The Clarion hotel in Las Vegas; substandard soil conditions and reclaimed land are among the reasons for construction site collapses; how construction, urbanization and heavy equipment contribute to sinkholes.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Dig up ancient Indigenous homes after a landslide hits British Columbia and explore a lost Puerto Rican ceremonial centre exposed by flooding. Visit an eerie burial site in the Bahamas, then marvel at a well-preserved Roman theatre in Croatia.

The failed controlled demolition of The Clarion hotel in Las Vegas; substandard soil conditions and reclaimed land are among the reasons for construction site collapses; how construction, urbanization and heavy equipment contribute to sinkholes.

Witness a booming Tongan tsunami, a wind-driven Hawaiian inferno, and a deadly Texas flood from space. Then zoom in and see how a loose cable and colossal ships caused the shocking collapse of the Francis Scott Key Bridge in Baltimore, Maryland.

The topic is parts and Sandi Toksvig is joined by Sara Pascoe, Ed Balls, Johnny Vegas and Alan Davies.

Paid programming.

Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings.

Preserved in the ice of Mexico's highest peak, a group of climbers stumble upon the bizarre, mummified remains of a man in a pinstripe business suit; experts uncover possible drug cartel connections and a plane crash shrouded in secrecy.

A buried ship, wartime cellars, jar burials and mass graves are excavated.

Dig up ancient Indigenous homes after a landslide hits British Columbia and explore a lost Puerto Rican ceremonial centre exposed by flooding. Visit an eerie burial site in the Bahamas, then marvel at a well-preserved Roman theatre in Croatia.

Triangle shaped hovering objects are seen by thousands of people and investigated by scientists and government officials, yet they could never be explained; the sightings occurred in a more than two year wave over Belgium, beginning in late 1989.

Alaskans must overcome rising waters to capitalize on spring's offerings.

Witness a booming Tongan tsunami, a wind-driven Hawaiian inferno, and a deadly Texas flood from space. Then zoom in and see how a loose cable and colossal ships caused the shocking collapse of the Francis Scott Key Bridge in Baltimore, Maryland.

The failed controlled demolition of The Clarion hotel in Las Vegas; substandard soil conditions and reclaimed land are among the reasons for construction site collapses; how construction, urbanization and heavy equipment contribute to sinkholes.

Discover dark secrets hidden inside an animal disease research centre that conspiracy theorists have linked to a dangerous outbreak. Take a frightening tour of a ruined laboratory and hear a shocking allegation about the origin of Lyme disease.

Margot, Matty, Billy, Emile and Gilbert begin work on their new northern homesteads.

The failed controlled demolition of The Clarion hotel in Las Vegas; substandard soil conditions and reclaimed land are among the reasons for construction site collapses; how construction, urbanization and heavy equipment contribute to sinkholes.

Discover dark secrets hidden inside an animal disease research centre that conspiracy theorists have linked to a dangerous outbreak. Take a frightening tour of a ruined laboratory and hear a shocking allegation about the origin of Lyme disease.

Margot, Matty, Billy, Emile and Gilbert begin work on their new northern homesteads.

Witness a booming Tongan tsunami, a wind-driven Hawaiian inferno, and a deadly Texas flood from space. Then zoom in and see how a loose cable and colossal ships caused the shocking collapse of the Francis Scott Key Bridge in Baltimore, Maryland.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Discover dark secrets hidden inside an animal disease research centre that conspiracy theorists have linked to a dangerous outbreak. Take a frightening tour of a ruined laboratory and hear a shocking allegation about the origin of Lyme disease.

A young boy is swallowed by a sand dune and miraculously survives; A fog lasts five days and kills thousands in London; The largest ship in the US Navy vanishes during World War I.

Taking on cricket trivia, Brad Pitt's filmography and a pop song speed challenge.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

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.

On the island of Pohnpei in Micronesia, explorers discover ancient structures hidden beneath dense vegetation; a strange glowing forest is discovered in India; an immense tunnel system is investigated in the Brazilian jungle.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Taking on cricket trivia, Brad Pitt's filmography and a pop song speed challenge.

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.

Learning why a radical religious group went to war with a Pacific Northwest town; exploring a wartime detention center in Wyo.; visiting a criminal sanctuary on Florida's Gulf Coast; exploring at the so-called Strangest House in the World.

Hawaii's Kilauea volcano violently erupts; Good Samaritans in Texas rescue care home residents trapped in Hurricane Harvey's deadly floodwaters; in England a paddleboarder battles high winds and treacherous tides.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; wing your way over a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

On the island of Pohnpei in Micronesia, explorers discover ancient structures hidden beneath dense vegetation; a strange glowing forest is discovered in India; an immense tunnel system is investigated in the Brazilian jungle.

A Swiss mountain seems to be squirting out its insides; a moon with a halo appears and seems to trigger bizarre human behavior; glowing green geese are filmed flying over Canada.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; wing your way over a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

Experts examine how the Chernobyl nuclear disaster and the Bhopal gas tragedy happened; they also explore the consequences and how they could have been avoided.

Hawaii's Kilauea volcano violently erupts; Good Samaritans in Texas rescue care home residents trapped in Hurricane Harvey's deadly floodwaters; in England a paddleboarder battles high winds and treacherous tides.

A Swiss mountain seems to be squirting out its insides; a moon with a halo appears and seems to trigger bizarre human behavior; glowing green geese are filmed flying over Canada.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; wing your way over a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

On a September morning in 1994, students at a Zimbabwe school witness a silver craft land in a nearby field; numerous adults corroborate the UFO sighting, but the children are silenced; many maintain their account of the incident is true.

Squaring off on national parks, Downton Abbey, musical theatre and human anatomy.

Margot, Matty, Billy, Emile and Gilbert begin work on their new northern homesteads.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; looking for 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.

In the Australian rain forests of Lake Eacham, a scientist discovers a mysterious mouse-like creature that glows in the dark; strange cylindrical tubes are uncovered in the forests of India; hundreds of human bones are found in a Belizean cave.

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.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Squaring off on national parks, Downton Abbey, musical theatre and human anatomy.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; looking for 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.

A Revolutionary leader visits Alabama's first capital and leaves it bankrupt; an Oregon fort refuses to engage an enemy submarine during World War II; a film studio in Jacksonville, Fla. caters to a new audience.

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.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta. Puzzle over an ancient ruin in Corinth, Greece, and explore a mind-blowing old structure on a Maltese island.

In the Australian rain forests of Lake Eacham, a scientist discovers a mysterious mouse-like creature that glows in the dark; strange cylindrical tubes are uncovered in the forests of India; hundreds of human bones are found in a Belizean cave.

The Virgin Mary appears in a dust cloud as a landslide narrowly misses her church; a second sun suddenly appears over a city; a farmer's footage might solve the riddle of mysterious crop circles.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta. Puzzle over an ancient ruin in Corinth, Greece, and explore a mind-blowing old structure on a Maltese island.

Sandi Toksvig delves into the public and the private with Alan Davies, Victoria Coren Mitchell, Phill Jupitus and Bridget Christie.

Sandi Toksvig looks at pictures with Alan Davies, Hannah Gadsby, Noel Fielding and Joe Lycett.

As the four-month assessment approaches, the handlers test different ways of connecting with their pups; one naughty kelpie gets a devilish new name.

A guinea pig named JT has a life-threatening tooth issue, a duck named Dick has a septic joint that needs cleaning, and Savannah and Dayle head to La Ronge, SK. to speak to a class of high schoolers and mentor the next generation of veterinarians.

Patching up a snake-bitten kitty cat and a bearded dragon with an odd leg swelling.

Sandi Toksvig delves into the public and the private with Alan Davies, Victoria Coren Mitchell, Phill Jupitus and Bridget Christie.

Sandi Toksvig looks at pictures with Alan Davies, Hannah Gadsby, Noel Fielding and Joe Lycett.

As the four-month assessment approaches, the handlers test different ways of connecting with their pups; one naughty kelpie gets a devilish new name.

A guinea pig named JT has a life-threatening tooth issue, a duck named Dick has a septic joint that needs cleaning, and Savannah and Dayle head to La Ronge, SK. to speak to a class of high schoolers and mentor the next generation of veterinarians.

Patching up a snake-bitten kitty cat and a bearded dragon with an odd leg swelling.

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.

The Virgin Mary appears in a dust cloud as a landslide narrowly misses her church; a second sun suddenly appears over a city; a farmer's footage might solve the riddle of mysterious crop circles.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta. Puzzle over an ancient ruin in Corinth, Greece, and explore a mind-blowing old structure on a Maltese island.

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.

Hitting a pop-music high note, looking at ancient Rome and facing TV trivia heartbreak.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

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 Yucatán Peninsula.

Off the coast of Tanzania, a puzzling site containing massive stone blocks is revealed on Kilwa Island; the discovery of giant animal bones baffles researchers in Australia; hundreds of human bones are uncovered in a Guatemalan rain forest.

On a September morning in 1994, students at a Zimbabwe school witness a silver craft land in a nearby field; numerous adults corroborate the UFO sighting, but the children are silenced; many maintain their account of the incident is true.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Hitting a pop-music high note, looking at ancient Rome and facing TV trivia heartbreak.

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 Yucatán Peninsula.

Navigating an Arizona border town where soldiers fought between two worlds; seeing a revolutionary mountain hideaway in New York; touring an American icon's dilapidated birthplace; viewing an Alaskan monument to natural-resource exploitation.

A violent tornado outbreak unleashes carnage on Oklahoma, Texas and Louisiana; A Swedish snow mobile rider gets lost in the mountains during a nighttime adventure; A record-breaking super typhoon brings down the roof on a wedding in the Philippines.

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; spot an immovable waterfall in Mexico.

Off the coast of Tanzania, a puzzling site containing massive stone blocks is revealed on Kilwa Island; the discovery of giant animal bones baffles researchers in Australia; hundreds of human bones are uncovered in a Guatemalan rain forest.

A passenger on a helicopter films a weird red liquid seeping from an Antarctic glacier. A ship appears in the sky at the site of a notorious World War Two naval battle. And strange lights filmed dividing over an American city.

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; spot an immovable waterfall in Mexico.

A ship blocks the most important route in global trade; a strange Scottish creature chases a mountaineer; mystery lights stalk allied pilots in Nazi Germany; determining if these are tricks of the mind or wild weather.

Old Tombs, buried coins, and a 4,000-year-old oak log coffin are discovered.

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; spot an immovable waterfall in Mexico.

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; spot an immovable waterfall in Mexico.

Old Tombs, buried coins, and a 4,000-year-old oak log coffin are discovered.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

A violent tornado outbreak unleashes carnage on Oklahoma, Texas and Louisiana; A Swedish snow mobile rider gets lost in the mountains during a nighttime adventure; A record-breaking super typhoon brings down the roof on a wedding in the Philippines.

A passenger on a helicopter films a weird red liquid seeping from an Antarctic glacier. A ship appears in the sky at the site of a notorious World War Two naval battle. And strange lights filmed dividing over an American city.

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; spot an immovable waterfall in Mexico.

A ship blocks the most important route in global trade; a strange Scottish creature chases a mountaineer; mystery lights stalk allied pilots in Nazi Germany; determining if these are tricks of the mind or wild weather.

Checking in with a ready-for-anything trio, then diving into stellar astronomical constellation facts; celebrating a lucky guess about Mediterranean islands, rolling the dice on Trivial Pursuit, and seeing a head-scratcher land a winner in hot water.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

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.

On the volcanic island of Kolombagara, explorers uncover a mysterious man-made cave in the dense jungle; a researcher finds two unknown animal skulls in Vietnam; human remains are discovered in a narrow chamber of a South African cave system.

New York City is under attack as Hurricanes Ida and Ian unleash their fury on innocent people; seeing how the latest science and technology can protect New York City's 8 million residents before everything gets swept away by ferocious superstorms.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Checking in with a ready-for-anything trio, then diving into stellar astronomical constellation facts; celebrating a lucky guess about Mediterranean islands, rolling the dice on Trivial Pursuit, and seeing a head-scratcher land a winner in hot water.

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.

A strange structure in New York becomes a testing ground for Nazi technology; a thriving amusement park is laid to ruins by an unstoppable force of nature; an island becomes a major player in a controversial industry.

Blazing bushfires tear through communities as a good Samaritan saves panicked drivers; a skier captures the horrifying moment he is buried alive by a tsunami of snow; a man flees just before a landslide sweeps eight homes into the sea.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

On the volcanic island of Kolombagara, explorers uncover a mysterious man-made cave in the dense jungle; a researcher finds two unknown animal skulls in Vietnam; human remains are discovered in a narrow chamber of a South African cave system.

Strange cloud rings filmed in the sky over Siberia may be linked to unexplained circles on the ice of a nearby lake; a lighthouse wobbles as it's battered by a storm; spiders travel hundreds of miles through the air.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

A salvage team discovers the mysterious remains of an enormous shipwreck near Cambridge Bay in the icy waters of the Canadian Arctic; experts investigate and uncover a cutting-edge vessel with links to one of the greatest polar explorers in history.

Cameras capture an intense explosion in Ontario, Calif., that rips apart a suburban home and sends panicked onlookers running for their lives; experts investigate and suspect a potential detonation of an enormous cache of illegal fireworks.

Archaeologists working at the Templo Mayor temple complex in Mexico, which was once located at the very center of the Aztec Empire, unearthed a chilling find, a tower made of over 600 human skulls.

A salvage team discovers the mysterious remains of an enormous shipwreck near Cambridge Bay in the icy waters of the Canadian Arctic; experts investigate and uncover a cutting-edge vessel with links to one of the greatest polar explorers in history.

Cameras capture an intense explosion in Ontario, Calif., that rips apart a suburban home and sends panicked onlookers running for their lives; experts investigate and suspect a potential detonation of an enormous cache of illegal fireworks.

On the volcanic island of Kolombagara, explorers uncover a mysterious man-made cave in the dense jungle; a researcher finds two unknown animal skulls in Vietnam; human remains are discovered in a narrow chamber of a South African cave system.

Blazing bushfires tear through communities as a good Samaritan saves panicked drivers; a skier captures the horrifying moment he is buried alive by a tsunami of snow; a man flees just before a landslide sweeps eight homes into the sea.

Strange cloud rings filmed in the sky over Siberia may be linked to unexplained circles on the ice of a nearby lake; a lighthouse wobbles as it's battered by a storm; spiders travel hundreds of miles through the air.

Puzzle over an out-of-place relic from World War II and get a bird's-eye view of stone circles in Norway; examine mysterious, ancient mounds on the banks of the Mississippi and uncover the dark history of a medieval English village.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in Ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind its trailblazing design.

Hitting rewind on a previous nail-biting finale; testing knowledge of Julia Roberts films; seeing what a mum of three knows about Narnia; a tennis trivia test; locking in a win on the science jackpot question.

As the four-month assessment approaches, the handlers test different ways of connecting with their pups; one naughty kelpie gets a devilish new name.

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; an unusual pattern is discovered in the Nevada desert.

In the jungles of southern Mexico, a rancher discovers dozens of skulls and bones on a cave floor; strange grass-covered domes are investigated in the Philippines; archaeologists uncover carved stone figures on the Hawaiian island of Kauai.

Experts examine how the Chernobyl nuclear disaster and the Bhopal gas tragedy happened; they also explore the consequences and how they could have been avoided.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Hitting rewind on a previous nail-biting finale; testing knowledge of Julia Roberts films; seeing what a mum of three knows about Narnia; a tennis trivia test; locking in a win on the science jackpot question.

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; an unusual pattern is discovered in the Nevada desert.

Look at a secret desert outpost in Utah where men unleashed hell; entering a forgotten Jacksonville church that became a haven; explore third-hand Japanese buildings in New York and the lair of a birdlike beast that tormented a West Virginia town.

Witnessing Hurricane Ida's devastation as it reduces Louisiana to rubble; following a man running for his life from California wildfires; facing a deadly sea swirl with a Norwegian ship crew; looking for a snow kiter engulfed by an avalanche.

The view from above reveals; baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; and a perplexing collection of circles decorating the seabed.

In the jungles of southern Mexico, a rancher discovers dozens of skulls and bones on a cave floor; strange grass-covered domes are investigated in the Philippines; archaeologists uncover carved stone figures on the Hawaiian island of Kauai.

A cigar-shaped hole in the clouds in Michigan; how to explain ghostly ice apples that appear on a tree after a ferocious winter storm; a strange jelly that falls from the sky into a garden in West Virginia.

The view from above reveals; baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; and a perplexing collection of circles decorating the seabed.

Timothée Chalamet, Emma Thompson, Rowan Atkinson, JADE.

A massive typhoon in the Philippines; a record-breaking California wildfire; a submerged house; a lost snowboarder spends an icy night facing bears and deadly frostbite.

Timothée Chalamet, Emma Thompson, Rowan Atkinson, JADE.

Sandi Toksvig has a picnic with Alan Davies, Romesh Ranganathan, Rachel Parris and Richard Osman.

Sandi Toksvig looks at plants with Alan Davies, Sara Pascoe, Stephen K. Amos and Jason Manford.

Witnessing Hurricane Ida's devastation as it reduces Louisiana to rubble; following a man running for his life from California wildfires; facing a deadly sea swirl with a Norwegian ship crew; looking for a snow kiter engulfed by an avalanche.

A cigar-shaped hole in the clouds in Michigan; how to explain ghostly ice apples that appear on a tree after a ferocious winter storm; a strange jelly that falls from the sky into a garden in West Virginia.

The view from above reveals; baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; and a perplexing collection of circles decorating the seabed.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

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; spot an immovable waterfall in Mexico.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

Sandi Toksvig has a picnic with Alan Davies, Romesh Ranganathan, Rachel Parris and Richard Osman.

Paid programming.

The Holmes team surprises superfan Michael, who has autism, with news that he's part of the crew; his family gets a life-changing upgrade that will open up their tired bungalow and give them more room for living.

As the four-month assessment approaches, the handlers test different ways of connecting with their pups; one naughty kelpie gets a devilish new name.

A guinea pig named JT has a life-threatening tooth issue, a duck named Dick has a septic joint that needs cleaning, and Savannah and Dayle head to La Ronge, SK. to speak to a class of high schoolers and mentor the next generation of veterinarians.

Patching up a snake-bitten kitty cat and a bearded dragon with an odd leg swelling.

Caroline Aherne narrates as some of Britain's most opinionated viewers comment freely.

Sandi Toksvig delves into the public and the private with Alan Davies, Victoria Coren Mitchell, Phill Jupitus and Bridget Christie.

Sandi Toksvig looks at pictures with Alan Davies, Hannah Gadsby, Noel Fielding and Joe Lycett.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Timothée Chalamet, Emma Thompson, Rowan Atkinson, JADE.

Sandi Toksvig has a picnic with Alan Davies, Romesh Ranganathan, Rachel Parris and Richard Osman.

Sandi Toksvig looks at plants with Alan Davies, Sara Pascoe, Stephen K. Amos and Jason Manford.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

Cameras capture an intense explosion in Ontario, Calif., that rips apart a suburban home and sends panicked onlookers running for their lives; experts investigate and suspect a potential detonation of an enormous cache of illegal fireworks.

Old Tombs, buried coins, and a 4,000-year-old oak log coffin are discovered.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

A ship blocks the most important route in global trade; a strange Scottish creature chases a mountaineer; mystery lights stalk allied pilots in Nazi Germany; determining if these are tricks of the mind or wild weather.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

Investigating significant historic and contemporary sites from the revealing vantage points of drone, satellite and aerial photography.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

Fails include an overpass fire, a downed radio telescope and a sinking airport.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Sandi Toksvig looks at plants with Alan Davies, Sara Pascoe, Stephen K. Amos and Jason Manford.

Paid programming.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

A salvage team discovers the mysterious remains of an enormous shipwreck near Cambridge Bay in the icy waters of the Canadian Arctic; experts investigate and uncover a cutting-edge vessel with links to one of the greatest polar explorers in history.

Old Tombs, buried coins, and a 4,000-year-old oak log coffin are discovered.

Tiptoe across an ancient burial ground in Panama and discover an Aboriginal time capsule after a bushfire rips across Australia. Address urgent questions about disease and mass burials in Nova Scotia, then find buried treasure in an Iraqi holy site.

On a September morning in 1994, students at a Zimbabwe school witness a silver craft land in a nearby field; numerous adults corroborate the UFO sighting, but the children are silenced; many maintain their account of the incident is true.

When bears, wolves and foxes are your only neighbors, life can be pretty lonely. Add minus-60-degree days and a constant battle for the most basic necessities, and you have the daily challenges of people who live in remote corners of Alaska. This series takes viewers deep into an Alaskan winter to meet tough, resilient residents as they try to stay one step ahead of storms and man-eating beasts to survive the season. The closest neighbor to Sue Aikens is more than 300 miles away. Eric Salitan subsists solely on what he hunts and forages. Chip and Agnes Hailstone catch fish for currency in bartering for supplies, and Andy and Kate Bassich use their pack of sled dogs for transportation. Also highlighted is a time of year not always part of what viewers see in Alaska: spring! Ice is breaking, animals are waking, and residents face new tests before deep cold returns.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Trace the hidden legacy of a cancelled Canadian fighter jet and a failed CIA spy-cat experiment. See how these lost ideas resurfaced decades later, contributing to video games and global mapping tools in ways their creators never imagined.

Fly the unfriendly skies over a rugged desert where countless airplanes have crashed. Look for evidence of UFOs or an underground military base, try out a flight simulator, and learn why mountain waves make this region so deadly for aviators.

The NWS homesteaders race to finish their projects before the harsh Canadian winter fully sets in.

Sign off.

Fly the unfriendly skies over a rugged desert where countless airplanes have crashed. Look for evidence of UFOs or an underground military base, try out a flight simulator, and learn why mountain waves make this region so deadly for aviators.

The NWS homesteaders race to finish their projects before the harsh Canadian winter fully sets in.

Track a storm-ignited Colorado wildfire, a toxic New Zealand volcanic eruption, and an apocalyptic Appalachian flood from above. Discover how a distant earthquake and poor construction caused a towering Bangkok skyscraper to collapse in seconds.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Fly the unfriendly skies over a rugged desert where countless airplanes have crashed. Look for evidence of UFOs or an underground military base, try out a flight simulator, and learn why mountain waves make this region so deadly for aviators.

A ship blocks the most important route in global trade; a strange Scottish creature chases a mountaineer; mystery lights stalk allied pilots in Nazi Germany; determining if these are tricks of the mind or wild weather.

A question on US state capitals; a tense showdown over extinct animals; a James Bond fan who outwits and outguns the competition to snag the first 10,000-pound win of the series.

Trace the hidden legacy of a cancelled Canadian fighter jet and a failed CIA spy-cat experiment. See how these lost ideas resurfaced decades later, contributing to video games and global mapping tools in ways their creators never imagined.

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

The origins of a colossal image of a man carved into the red sands of Central Australia; mysterious mummies and peculiar whale bones resting in two different parts of Chile's Atacama Desert; a lost Egyptian tomb.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Budding entrepreneurs get three minutes to pitch their business ideas to five multimillionaires who are willing to invest their own cash to kick-start the businesses in the original "Shark Tank." After each pitch, the Dragons have the opportunity to ask questions about the venture. The entrepreneurs don't always have to answer, but of course what they choose not to address could very well affect the outcome. The pitch is over when each of the Dragons has declared,"I'm out." Evan Davis hosts.

A question on US state capitals; a tense showdown over extinct animals; a James Bond fan who outwits and outguns the competition to snag the first 10,000-pound win of the series.

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

Inspect a rusty boat in Florida that once held boundless treasure; creep around an Indiana house of correction that punished its residents; examine a metal menagerie on the front lines of a foreign attack and an upstate New York comedy incubator.

Rescuers aid a young girl trapped under rubble after a Turkish earthquake, all while a tsunami threatens to add to the turmoil; a father and daughter escape Oregon wildfires; a flash flood upstages an outdoor wedding.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.

The origins of a colossal image of a man carved into the red sands of Central Australia; mysterious mummies and peculiar whale bones resting in two different parts of Chile's Atacama Desert; a lost Egyptian tomb.

A bizarre eruption of bubbles spotted on a giant lake; experts try to explain a forest of crooked trees; geometric shapes beneath the ocean that could signal an animal invasion.

Encounter abandoned pods that may have been designed by alien architects; explore a mysterious concrete channel in Bosnia; weave through a complex of odd shapes in Greenland; meet the mythical guardian of a Vietnamese building.