Reports from people who say they've been abducted are explored; a Harvard psychiatrist who takes them seriously comes under attack.

No longer waiting for the government to share data, citizen scientists and private groups amplify the search for answers.

In 1947, the U.S. Army claims to have recovered a flying disk in New Mexico, then denies it. The truth about the incident is still out there.

A terrifying account of the CIA's efforts to expose unknowing members of the public to biological agents, hallucinogenic drugs and psychological techniques aimed at mastering the art of mind control.

For the first time since Howard Carter's discovery of Tutankhamun's tomb in 1922, all 5,398 objects from the tomb reunite at the new Grand Egyptian Museum.

Many scholars believe King Tut's death mask was not made specifically for him, citing its damaged nameplate and different colors of gold; some believe it more likely the mask was made for his female ancestor, Nefertiti.

Of all the 5,398 treasures from the tomb of Tutankhamun now being assembled and forensically investigated at the Grand Egyptian Museum in Cairo, it's the ones that paint a picture of Tutankhamun's family that are the most unsettling.

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Category 5 hurricane Humberto veers away from the US coast, to head directly towards the island of Bermuda.

Onboard cameras capture the action as the Bering Sea's crab fleet confronts a monster storm.

Hurricane season in the Gulf of Mexico.

One of the most powerful hurricanes ever seen in the Atlantic hit the Bahamas and the United States and 1000 cameras caught the action.

Enhanced; three real-world disasters dissected: nuclear missile, ferry and oil rig.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

Three real-world disasters forensically dissected -- Deepwater Horizon explosion, the Concorde crash and the funicular fire at Kaprun.

In this enhanced episode, the causes of three disasters are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

Enhanced; three real-world disasters dissected: in space, a train and a high-rise.

In this enhanced episode, the causes of three disasters are dissected; Lac-Mégantic train crash, Imperial Sugar refinery explosion and Ever Given container ship accident.

Explore powerful industrial machines, where precision meets extreme danger.

Natural disasters reveal Earth's fierce power and our struggle to withstand it.

In this enhanced episode, the causes of three disasters are dissected; Lac-Mégantic train crash, Imperial Sugar refinery explosion and Ever Given container ship accident.

Explore powerful industrial machines, where precision meets extreme danger.

Natural disasters reveal Earth's fierce power and our struggle to withstand it.

One of the most powerful hurricanes ever seen in the Atlantic hit the Bahamas and the United States and 1000 cameras caught the action.

Hurricane season in the Gulf of Mexico.

Onboard cameras capture the action as the Bering Sea's crab fleet confronts a monster storm.

Category 5 hurricane Humberto veers away from the US coast, to head directly towards the island of Bermuda.

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A look at the migration patterns of millions of animals on this planet that have been passed down for generations.

CBP uncovers smuggled human remains; Border Patrol stops migrant smugglers.

Features HSI running multiple undercover drug deals; CBP discovers coke hidden in oatmeal.

HSI finds overcrowded human stash houses; CBP discovers meth in machinery.

Rookie CBP officers find multiple drugs; HSI runs a buy-bust operation.

David Blaine journeys to India, the birthplace of much of magic, to explore belief and performance through the lens of magic.

In Japan, David meets masters who spend a lifetime refining a single skill.

In a country once divided by apartheid, South Africa is witnessing how magic breaks down social barriers and changes people's perspectives.

A colorful collection of daredevils inspires David to take a leap of faith.

David Blaine examines fear by learning to interact with venomous creatures.

Photographer Ami Vitale and a team of scientists try to save the northern white rhinoceros from extinction.

Explore the wonders, threats and hope for our vast, interconnected ocean.

Explorers search for the largest, most elusive land mammals alive today.

David Blaine examines fear by learning to interact with venomous creatures.

David explores humanity's ability to endure extreme temperatures.

In a country once divided by apartheid, South Africa is witnessing how magic breaks down social barriers and changes people's perspectives.

CBP pulls a line of meth from a gas tank and stops an internal body carrier with fentanyl.

Homeland Security Investigations surprises coke smugglers mid-handoff; CBP seizes shipments of money, drugs and ketamine.

Homeland Security Investigations Miami uncovers a mysterious new drug; CBP discovers invasive African snails in mail.

CBP finds $200k of weed in luggage; HSI disrupts a Colombian counterfeit ring.

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Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

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Egyptologists' breakthrough in the search for Cleopatra - unlocking secrets of her royal home.

The mysteries of Tutankhamun are unlocked; archaeologists find a tomb of great importance.

Archaeologists investigate the queens of ancient Egypt and excavate a pyramid.

Archaeologists investigate Cleopatra's downfall and hunt for her lost tomb.

Archaeologists hunt for mummies to reveal new evidence about Ancient Egypt.

Archaeologists unearth new evidence of how the iconic pyramids evolved.

Gordon Ramsay travels to Laos, where he kayaks down the Mekong in search of culinary inspiration; he samples the eggs of the weaver ant, dives for freshwater snails and hunts for water bugs; Ramsay cooks a banquet for monks at a temple.

High in Peru's Sacred Valley of the Incas, Gordon Ramsay travels by motorbike to unlock the secrets of high altitude cuisine.

Deep in Morocco's Middle Atlas Mountains, Gordon Ramsay embarks on an adventure to unlock the secrets of the ancient Berber cuisine; he rappels over a waterfall to meet mushroom hunters, milks a camel and experiences the life of the Berber people.

Gordon Ramsay heads to New Zealand on a mission to discover the secrets of Maori cuisine, visiting some of the South Island's remote corners.

Captain Bruce and the Wildcard crew target 45 tons of mackerel in four months.

The Wild Card crew heads into port with 10 tons of prized Spanish mackerel.

The Wild Card crew breaks their losing streak, smashing their weekly target.

Bruce makes a gamble that may cost dearly or set them up for a dramatic victory.

The Wild Card crew heads into port with 10 tons of prized Spanish mackerel.

The Wild Card crew breaks their losing streak, smashing their weekly target.

Bruce makes a gamble that may cost dearly or set them up for a dramatic victory.

Gordon Ramsay heads to New Zealand on a mission to discover the secrets of Maori cuisine, visiting some of the South Island's remote corners.

Deep in Morocco's Middle Atlas Mountains, Gordon Ramsay embarks on an adventure to unlock the secrets of the ancient Berber cuisine; he rappels over a waterfall to meet mushroom hunters, milks a camel and experiences the life of the Berber people.

High in Peru's Sacred Valley of the Incas, Gordon Ramsay travels by motorbike to unlock the secrets of high altitude cuisine.

Gordon Ramsay travels to Laos, where he kayaks down the Mekong in search of culinary inspiration; he samples the eggs of the weaver ant, dives for freshwater snails and hunts for water bugs; Ramsay cooks a banquet for monks at a temple.

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In a modern world, Alaska Natives live off the land as their people have for centuries.

Alaska Natives harvest food by land and sea to provide for their families.

On the lands of their ancestors, Alaska Natives build new futures using old ways.

Unstable winter weather tests the Indigenous Alaskan way of life.

Time-honored methods outshine new technology in Alaska's brutal winters.

Alaska Natives live in balance with the animals of their shared lands.

Unpredictable winter weather challenges food security for Alaska Natives.

Alaska's Indigenous Peoples rely upon the lessons and values of their ancestors to harvest resources for their families and neighbors.

Brilliant strategist Morgan takes humans, treasure, and towns without mercy.

Blackbeard's name strikes fear into all as a brutal diabolical pirate.

Bartholomew Roberts is the most successful pirate of the Golden Age.

Grace O'Malley defies gender conventions of her day and becomes the most feared and respected leader of both the land and the sea, eventually rising to Chieftain.

Englishman-turned-Algerian pirate John Ward becomes ruler of the Tunisian empire.

Captain Kidd, the treasure hunter, turns from pirate hunter to pirate.

Braver than the men, Anne Bonny and Mary Read are ferocious female pirates.

The story of the Korean Peninsula and the effort to find lasting peace as told by the people who have tried.

The Kim family's hold on power is believed by many North Koreans to be the only thing saving them from annihilation.

America's secret operations and military black sites.

Once a peaceful paradise, Puerto Rico is now a major gateway for South American cocaine bound for the United States; its inhabitants are experiencing a wave of violence, while the streets are in the grip of a drug epidemic; enhanced.

Heroin addiction reaches epidemic proportions on suburban Staten Island, N.Y.; enhanced.

Two drug dealers target Mardi Gras tourists in New Orleans, one selling real drugs and one selling fake.

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Every five seconds there's a victim of identity theft; LifeLock helps alert, restore identity, and reimburse lost funds-leading the way in protecting families every day.

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Hazen Audel battles through snake-filled swamps and a descent on his first day in South America, in order to join a hunt and harvest feast.

Hazen Audel encounters anaconda and caiman on a mission in the remote wetlands of Northern Argentina.

Leaving Argentina behind, Hazen climbs up into the Andes mountains; he battles landslides, mountain sickness and a sudden whiteout to reach a high-altitude indigenous festival.

On the fourth leg of his Andes adventure, Hazen battles against winding canyons and sun-scorched salt flats to join an indigenous ceremony.

Survivalist and explorer Hazen Audel tackles the waterless wilderness of the Atacama Desert of Chile.

Hazen Audel, a survivalist in the Andes, braves the Pacific Coast in his last expedition of the season.

With the help of the locals, a newcomer begins construction on his cabin in a remote corner of Alaska.

The citizens of Port Protection race to build shelter for their newest resident before the brutal and unforgiving winter hits the town.

An up-close look at the lives and struggles of the residents of Port Protection, Alaska.

With winter near, Matt trudges through a fierce storm on a quest for deer.

The villagers of Port Protection are back to paving with good intentions.

Curly shoots a bear; Troy and Sarah struggle with a new water system.

In this enhanced episode, residents tackle tasks in the season of productivity.

Port Protection residents must harvest the land and sea for survival.

Residents of the Arctic employ both old and new techniques to survive.

In this enhanced episode, residents tackle tasks in the season of productivity.

Severe winter weather brings chaos to the mountains and Thord's running out of options; Bjoern does Thord a big favor, leaves his territory and takes a ferry to the coast to rescue a snowplough.

A new generation of survivalists are put to the test in the frozen Arctic.

Alaska is a challenging place, but tenacity of the spirit makes it home.

As winter turns to spring, Alaskans must seize the warming days.

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

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Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

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America's secret operations and military black sites.

The Kim family's hold on power is believed by many North Koreans to be the only thing saving them from annihilation.

The story of the Korean Peninsula and the effort to find lasting peace as told by the people who have tried.

Considering the line of succession in North Korea.

North Korea is a James Bond villain in the form of a brutal dictatorship, self-isolated from the global community as they pick its pockets.

North Korea embraces cyber-crime for profit and disruption with a 6,000 strong army of cyber criminals worldwide.

Lisa Ling goes under cover in North Korea and gains unprecedented access to this closed, authoritarian society.

A 48-hour sting leads HSI to a stash house; CBP finds drugs in gas tanks.

CBP Dulles finds outbound drugs; Border Patrol tracks human smugglers.

HSI tails vehicle transporting meth; CBP seizes looted Ukrainian relics.

CBP in McAllen faces a possible bomb; HSI arrests fentanyl traffickers.

HSI finds cocaine hidden in frozen avocado paste; CBP recovers stolen cars.

HSI St. Louis pursues gun traffickers; CBP stops siblings hiding money.

A CIA veteran helps rescue people during the 2021 Afghanistan withdrawal.

Border Patrol chases suspect fleeing arrest; CBP stops weed leaving the U.S.

HSI St. Louis pursues gun traffickers; CBP stops siblings hiding money.

A CIA veteran helps rescue people during the 2021 Afghanistan withdrawal.

New drug trafficking strategies include stashes anchored to the seabed and narco-submarines.

Spanish Coastguards fight against drug trafficking extends to unexpected realms.

Sea, air and land units from the Spanish Coastguards strive to uncover drug trafficking plans.

Spanish Coastguards coastal patrols unveil the cunning tactics of sea mafias.

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Join your hosts Kevin Cash & Cory Cady as we discuss the 250th Anniversary of America with the official "America 250" logo on a Silver American Eagle label; we are locking in orders for this iconic release, but coins are limited! Don't miss out!

See how a drug-free patch is helping people find relief-without medication.

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Cut up to HALF the cost of your monthly cell phone bill. Same Towers. Same Coverage. But a LOT less money. It sounds great but is it too good to be true? Join myth-busting legend Kari Byron as she takes on Big Wireless to save you money.

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Archaeologists explore hidden tombs and find spectacular mummies.

A secret excavation site reveals new details about the missing pyramid pharaohs.

Archaeologist Pepi Papakosta is on a mission to find Alexander the Great's lost tomb; excavating in the center of Alexandria, Egypt, she discovers a rare statue of Alexander and secret tunnels.

An investigation into the mysterious people who built Machu Picchu, the 15th-century Inca citadel located in southern Peru.

Albert Lin travels to the Peruvian mountains to discover the origins of Machu Picchu; Albert finds evidence of people who came before the Incas and reveals that the Inca city may have been inspired by another even older civilization.

Albert Lin travels to Micronesia, in the heart of the Pacific Ocean, to uncover the ancient island city of Nan Madol.

Albert Lin travels to Petra, Jordan, to discover the origins of the famous city; he learns that it was built by the Nabataeans and reveals that the ancient city of Petra was part of a much larger network than he had ever imagined.

National Geographic explorer and scientist Albert Lin travels to Acre, Israel, in search of the lost fortunes of the mysterious Knights Templar.

Albert Lin travels to Colombia to find out the truth about the legendary city of El Dorado.

Will Smith heads to the South Pole to meet remote scientists.

Will Smith ventures into the Amazon in search of deadly creatures.

Will travels deep into the Amazon in search of a giant green anaconda.

Will heads to the Himalayas in search of the secret to happiness.

From the Pantheon, to Mont Saint-Michel, and an enduring Roman gate that evolved into a medieval church, the exploration of history's most sacred spaces uncovers how ancient builders channeled faith and ingenuity into architectural marvels.

Angkor Wat is built as a stone replica of the universe, while the ancient Mayan pyramid El Castillo marks a sacred axis connecting earth and sky. In the hills of Ireland, the Newgrange harnesses the transformative power of the solstice sun.

Will Smith heads to the South Pole to meet remote scientists.

From the Pantheon, to Mont Saint-Michel, and an enduring Roman gate that evolved into a medieval church, the exploration of history's most sacred spaces uncovers how ancient builders channeled faith and ingenuity into architectural marvels.

Angkor Wat is built as a stone replica of the universe, while the ancient Mayan pyramid El Castillo marks a sacred axis connecting earth and sky. In the hills of Ireland, the Newgrange harnesses the transformative power of the solstice sun.

The Germans expect an attack in the Spring of 1944, but instead they find themselves in a fascinating game of cat-and-mouse in the lead-up to June 6.

A look at the final months of World War II, as Japan unleashes suicide bombers while turning its islands into a fortress to repel American invaders .

Hitler makes a final attempt to win the war with a surprise winter attack, and the resulting war crimes against American forces.

Ancient terraces made of volcanic rock in Indonesia leave their origin still in enigma; hundreds of human skeletal remains are unearthed; a blood-red beach on Hormuz Island ignites speculations; penguin remains are discovered.

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CBP pulls a line of meth from a gas tank and stops an internal body carrier with fentanyl.

Analyze fish remains found near an angry Sumatran volcano that could suggest a new human migration route; visit a prehistoric village smoked out by a forest fire, a collapsed kingdom in Turkey, and evidence of early Olympic sacrificial rituals.

Explore the 10 most dramatic structural collapses in history, from bridges to buildings.

Earhart, Everest and the Lost City of Z; uncovering the causes behind the top 10 tragic expeditions in history.

Exploring various catastrophies that has happened in mankind's quest to conquer space, from the Apollo 1 tragedy to the Challenger and the Columbia disasters.

Trains, planes, and ships collide; exploring ten global collisions.

Witness the 10 worst sports crashes from the high-risk world of sport racing.

When a dam fails, catastrophe follows; history's 10 worst dam failures.

Ranking history's 10 most dramatic global disasters.

Ten of history's worst maritime disasters at sea.

In a country once divided by apartheid, South Africa is witnessing how magic breaks down social barriers and changes people's perspectives.

David Blaine journeys to India, the birthplace of much of magic, to explore belief and performance through the lens of magic.

A colorful collection of daredevils inspires David to take a leap of faith.

Explore Earth's harshest places, where beauty, danger and survival collide.

Examine infamous cults, where devotion turns dangerous and tragedy unfolds.

A colorful collection of daredevils inspires David to take a leap of faith.

Explore Earth's harshest places, where beauty, danger and survival collide.

Examine infamous cults, where devotion turns dangerous and tragedy unfolds.

Hurricanes, droughts and storms reveal strange mysteries, relics and artifacts.

Encounter kids' drawings on the walls in Pompeii that expose the city's violent gladiatorial past; check out a mythical sculpture unearthed by an Indian tsunami, a 12-century temple in quake-prone Mexico; a sunken ship in Utah's Great Salt Lake.

Revisiting a medieval shipwreck that could reshape history; exploring a Greek version of Atlantis that sank in a tsunami, a Mexican temple rediscovered in the wake of a severe drought and rich remnants of an ancient city.

Visit Cambodia, where record droughts have left a trade hub exposed; examine a submerged funerary complex in Greece, ancient mammal footprints preserved by a Turkish volcanic eruption and North American fossils from the post-dinosaur era.

CBP pulls a line of meth from a gas tank and stops an internal body carrier with fentanyl.

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Back Pain? Hip? Sleep well thanks to this cooling topper!

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Spanish Coastguards tackle illegal trafficking by land, sea, and air, securing a record-breaking seizure.

Darkness conceals illegal tobacco traffickers with a surprising twist.

Chasing smugglers never has a predictable ending.

Spanish Coastguards fight human trafficking with unexpected results.

Spanish Coastguards coastal patrols unveil the cunning tactics of sea mafias.

Sea, air and land units from the Spanish Coastguards strive to uncover drug trafficking plans.

Spanish Coastguards fight against drug trafficking extends to unexpected realms.

New drug trafficking strategies include stashes anchored to the seabed and narco-submarines.

After a woman's bag is flagged in an X-ray, the police officers must decide whether they let her go or destroy the bag.

A young man seems unaware he's committed a crime, despite being caught carrying 30 times the legal amount of marijuana. At the docks, a shipment of hats raises suspicions.

An elderly woman tries to traffic cocaine, one of the largest shipments seized at the airport; an Indonesian passenger claims to be the victim of a hoax; three other young people are arrested trying to smuggle drugs in different ways.

A passenger behaves erratically and a woman breaks out in tears; a man admits necessity led him to commit a crime; a suspicious bag might contain drugs.

At Jorge Chávez Airport in Lima, Peru, agents hold a Spanish passenger when they discover that their suitcases conceal almost 10 kilos of cocaine.

A 19-year-old's bag is filled with damp clothes that turn out to be soaked in liquid cocaine; police find 16kg worth of drugs in a suitcase; officers detain a pair of Colombians headed to Mexico.

The agents identify two suspicious travelers going to Mexico; the body scan shows they are carrying capsules inside their bodies; in the hospital, one of them reveals that they are pregnant.

HSI finds cocaine hidden in frozen avocado paste; CBP recovers stolen cars.

CBP in McAllen faces a possible bomb; HSI arrests fentanyl traffickers.

HSI tails vehicle transporting meth; CBP seizes looted Ukrainian relics.

CBP Dulles finds outbound drugs; Border Patrol tracks human smugglers.

A 48-hour sting leads HSI to a stash house; CBP finds drugs in gas tanks.

Border Patrol chases suspect fleeing arrest; CBP stops weed leaving the U.S.

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Plexaderm helps reduce Under Eye Bags, Dark Circles, and Wrinkles in just 10 minutes!

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Trusted brand Jacuzzi Bath Remodel and interior designer Christina Hall share their secrets on how you can easily and affordably transform your bathroom into a gorgeous custom, safe, stylish space in 1 day! Call for a FREE quote & installation.

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In 2007, Los Angeles was in shock when four shark attacks happened in just three months.

James Cameron explores the myths surrounding the shipwreck and conducts a series of tests to see whether Jack could have survived.

Cutting-edge scan creates a digital twin of Titanic for immersive, 3D investigation.

"Jaws" shocked audiences and continues to influence the world 50 years later.

Bertie Gregory decides to journey to South Africa to go swimming and diving with some great white sharks.

Bertie is in the Azores to film a spectacular predator feeding frenzy.

Bertie's mission takes him to Tanzania to film cheetahs on the hunt.

Captain Bruce and the Wildcard crew target 45 tons of mackerel in four months.

The Wild Card crew heads into port with 10 tons of prized Spanish mackerel.

The Wild Card crew breaks their losing streak, smashing their weekly target.