The sacred city of Nippur and the world's only ziggurat contain elusive mysteries to the ancient Sumerian people; now, archaeologists armed with pioneering tech are on a quest to reveal the secrets behind the earliest known civilization in history.

Cutting-edge archaeological methods help experts unearth the dark secrets hidden at the seven wonders of ancient Rome.

The sacred city of Nippur and the world's only ziggurat contain elusive mysteries to the ancient Sumerian people; now, archaeologists armed with pioneering tech are on a quest to reveal the secrets behind the earliest known civilization in history.

The coliseums of Rome were brutal theaters of spectacle and death that helped control the sprawling Roman empire; now, archaeologists uncover the engineering secrets behind these majestic structures to reveal the truth behind the ancient Roman world.

The ancient city of Abydos contains some of the oldest Egyptian tombs and a buried temple linked to a mysterious death cult; now, archaeologists use cutting-edge drone imaging to investigate long-hidden secrets behind the first pharaohs.

A colossal stone temple on a remote Egyptian island mysteriously bears the names of the most famous leaders of the ancient world; now, experts use cutting-edge tech to investigate why pharaohs and emperors all built monuments at this enigmatic site.

Lost tapes show that Apollo astronauts heard unexplained transmissions on the far side of the moon; an amateur astronomer finds an odd disturbance in Martian atmosphere; an unidentified object in Earth orbit starts stalking Russian spacecraft.

Astronauts evacuate when a mystery object hurtles toward the ISS; a NASA secret agent goes undercover to retrieve missing moon rocks; scientists struggle to find answers when they discover a huge void at the edge of the solar system.

A distant planet shows an Earth-like atmosphere; a glowing light suggests an atmosphere on the Moon; why there are blueberries on Mars.

Discoveries of new planets have revealed countless worlds much stranger than Earth; some of these strange worlds don't have stars and others are made out of diamonds.

Dark matter is the biggest mystery of the cosmos; scientists know that it has been vital to our universe since its birth, and new discoveries reveal that it could create black holes, cause mass extinctions, and might even shape life on Earth itself.

New theories claim that the legendary sunken city of Atlantis actually could have been in the Americas; Rob Nelson and Stefan Burns investigate evidence that might shed more light on one of the world's greatest mysteries.

A legendary train filled with stolen Nazi gold is said to be hidden in Poland; using cutting-edge technology, Rob Nelson and Stefan Burns explore deep underneath the earth's surface and in abandoned Nazi tunnels in search of the infamous legend.

When an infamous pirate city sunk into the sea after a massive earthquake, a wealthy pirate's treasure may have disappeared with it; a hunt for the legendary lost pirate treasure of Henry Morgan.

Millions of dollars of stolen Gold Rush treasure is rumored to have been stashed in a cave in Northern California; the search for the legendary treasure.

Searching for the fabled lost Temple Treasures of Jerusalem and King Solomon's hidden mines.

A strange cave freezes in the summer and melts in the winter; a massive sand dune swallows a small child in an instant.

A massive supervolcano beneath Naples, Italy, may be on the verge of erupting again, which could have apocalyptic consequences across the planet; Rob Nelson and Stefan Burns use cutting-edge technology to investigate this disturbing new evidence.

Josh recounts a Himalayan mission to find the yeti and a filmmaker's pursuit of the dangerous elephant king; the starving crew of an Antarctic expedition makes difficult choices to survive.

Josh Gates tackles history's most chilling polar adventures, including Robert Peary and Matthew Henson's brave push to the North Pole as well as Ernest Shackleton's epic survival in Antarctic ice.

Josh Gates recounts the death-defying exploits of Edmund Hillary and Tenzing Norgay, who summit Mount Everest; two submariners plunge seven miles under the Pacific; a pilot skydives from the edge of space.

Josh Gates explores daring journeys, including the Kon-Tiki balsa raft crossing the Pacific, NASA's lunar rover making tracks on the moon and an airplane flying around the world without the use of fuel.

Josh Gates explores how club members' swashbuckling exploits inspired Hollywood; a bullwhip-cracking archaeologist may be the real-life Indiana Jones; a Nazi mountaineer's life-changing "Seven Years in Tibet" became a Brad Pitt star turn.

Josh Gates boldly explores members' most heart-pounding journeys into space; Apollo 13 astronauts fight to bring their crippled spacecraft 238,000 miles back to Earth and futuristic SpaceShipOne could give others a chance to travel to space.

Josh Gates explores daring journeys, including the Kon-Tiki balsa raft crossing the Pacific, NASA's lunar rover making tracks on the moon and an airplane flying around the world without the use of fuel.

Josh Gates explores how club members' swashbuckling exploits inspired Hollywood; a bullwhip-cracking archaeologist may be the real-life Indiana Jones; a Nazi mountaineer's life-changing "Seven Years in Tibet" became a Brad Pitt star turn.

Josh Gates boldly explores members' most heart-pounding journeys into space; Apollo 13 astronauts fight to bring their crippled spacecraft 238,000 miles back to Earth and futuristic SpaceShipOne could give others a chance to travel to space.

Josh Gates recounts the death-defying exploits of Edmund Hillary and Tenzing Norgay, who summit Mount Everest; two submariners plunge seven miles under the Pacific; a pilot skydives from the edge of space.

A strange cave freezes in the summer and melts in the winter; a massive sand dune swallows a small child in an instant.

A massive supervolcano beneath Naples, Italy, may be on the verge of erupting again, which could have apocalyptic consequences across the planet; Rob Nelson and Stefan Burns use cutting-edge technology to investigate this disturbing new evidence.

Three cosmonauts mysteriously die as they re-enter Earth's atmosphere and NASA needs to know why; a declassified document shows a CIA plan to use a space disaster as a cover to start World War 3.

Two astronauts trapped in the vacuum of space face a horrible death; the first close up images of Pluto show an alien landscape; residents of Houston struggle to explain videos of unidentified flying lights captured above their city at night.

Spaceships powered by atomic bombs; artificial rings encircle an entire star; Neil Armstrong's transmission feed cuts off when he spots strange lights on the moon; how can lightning talk to itself.

Scientists have discovered a mysterious ninth planet ten times the size of Earth on the very edge of the solar system; this strange world could have moons with extraterrestrial life.

Recent evidence could explain how supermassive black holes grow so big; neither dark matter nor cannibalism can fully explain these beasts, but the latest science may finally provide an answer.

An unearthly presence at a nuclear launch site in Cyprus visits a UN peacekeeper and helps him fight off a deadly enemy.

A Russian soldier describes being lured into a swamp by an unnatural entity; an Ohio military base with a UFO connection; an interview with a US Air Force colonel whose alien-craft sightings are finally confirmed.

U.N. Peacekeeper develops a mysterious power to fight off a deadly foe.

An unknown presence pulls an Armed Forces officer into a living nightmare.

A Navy seaman experiences strange events in the heart of the Bermuda Triangle; an Air Force Staff Sergeant is confronted by an otherworldly being in Iraq; a tech sergeant discovers a haunting visitor in her air base house.

A Russian Infantryman fights an unknown presence in a Chechnyan forest.

An intelligence analyst on a secret mission makes an unearthly discovery.

When a U.S. Air Force intercept aircraft chases after a UFO, it vanishes forever without a trace; a new investigation tries to uncover what caused this mysterious disappearance.

Experts use cutting-edge technology to investigate a mysterious phenomenon at the tomb of a 3,000-year-old Egyptian pharaoh.

When a powerful radio beam originating from deep space is detected by experts on Earth, some suspect it's hard evidence of extraterrestrial life; new investigations into this shocking signal might reveal the truth.

When two experts build their own radio-listening station to intercept the secret communications of American and Soviet astronauts, they capture traces of a haunting voice that may be a lost Russian cosmonaut.

When someone picks up a radio distress call from a seven-year-old boy lost alone in the desert, authorities embark on a search-and-rescue mission to find him; as the hunt continues, the case becomes more and more mysterious.

A Russian radio station has broadcast a signal nonstop since the Cold War, and no one knows why; experts use hi-tech methods to investigate what it is and what might happen if it ever stops.

When two experts build their own radio-listening station to intercept the secret communications of American and Soviet astronauts, they capture traces of a haunting voice that may be a lost Russian cosmonaut.

When someone picks up a radio distress call from a seven-year-old boy lost alone in the desert, authorities embark on a search-and-rescue mission to find him; as the hunt continues, the case becomes more and more mysterious.

A Russian radio station has broadcast a signal nonstop since the Cold War, and no one knows why; experts use hi-tech methods to investigate what it is and what might happen if it ever stops.

When a powerful radio beam originating from deep space is detected by experts on Earth, some suspect it's hard evidence of extraterrestrial life; new investigations into this shocking signal might reveal the truth.

A Russian Infantryman fights an unknown presence in a Chechnyan forest.

An intelligence analyst on a secret mission makes an unearthly discovery.

Neil Armstrong enters an unexplained spin; an Apollo 17 photo seems to show a US military outpost on the Moon; possible alien life swimming in the oceans of Jupiter's moons.

Soviet photos of the moon are intercepted by the CIA; a malfunction aboard the ISS, which imperils the whole crew; NASA probe finds evidence of the possibility of life on Mars.

Astronaut Leroy Chiao's spacewalk is interrupted by bright lights flying past; a flying saucer is photographed from the Apollo.

The universe is a dangerous place; exploring the deadliest spots in the cosmos; between earth and the edge of the universe, there are a million ways to die; a crash test dummy is on a mission.

Exploring the real-life death stars in the cosmos that could snuff out Earth without much effort; the science of the destructive power behind six of the deadliest stars; vampire stars, supernovas and rogue stars.

Rome's Pantheon hides the secret to the Roman Empire's power, and it took dangerous, cutting-edge engineering to build it. Experts use the latest tech and modern-day science to reveal if building it a second time would be just as deadly.

Rome's Colosseum is the most famous stadium on the planet, and it took cutting-edge engineering and a fallen emperor to build it; experts use the latest tech and modern-day science to reveal if building it a second time would be just as difficult.

The Great Wall of China is one of the world's greatest engineering marvels, and it took dangerous, cutting-edge construction to build it; experts use the latest tech and modern-day science to reveal if building it a second time would be as deadly.

Rome's aqueducts are one of the greatest engineering marvels in history, and it took dangerous, cutting-edge construction to build them; experts use the latest tech and modern-day science to reveal if building them a second time would be as deadly.

Egypt's Great Pyramid is one of the world's greatest and most mysterious marvels, and using cutting-edge tech and the latest engineering innovations, experts reveal what it would take to build the ancient wonder today.

As floodwaters unleash havoc in Venice, Italy, experts use the latest technology and modern-day science to explore the feasibility of rebuilding it.

Bridges and tunnels revolutionized transportation-but when they fail, tragedy follows. This episode explores the world's worst collapses and fires, including a tunnel blaze in the Alps so intense it fused 20 cars together. While bridge failures send vehicles plummeting into water or ground below, tunnel fires turn confined spaces into infernos. Why do these disasters happen, and what can be done to stop them? As we build bigger and faster, we also raise the stakes.

As technology advances, manmade accidents have become as destructive as some natural disasters; a look at recent catastrophes.

Tornadoes are violent, rotating columns of air that can level buildings, their unpredictability makes them even more destructive; a look at how tornadoes form and if they can be stopped.

Earthquakes occur when tectonic plates suddenly shift and shock waves shake the Earth's surface; they occur along fault lines -- the most active being the Ring of Fire in the Pacific Ocean and the San Andreas Fault on the American West Coast.

Volcanoes created more than 80% of our planet's surface, but explosive eruptions can be deadly; a journey under the earth to discover why volcanoes are so dangerous.

Hurricanes, typhoons and cyclones are all the same thing with different names, but what they also have in common is their destructive power.

Archive footage and cutting-edge CGI is used to explore global disasters, illustrating the full toll these events can take and giving an understanding on how and why they occur.

Volcanoes created more than 80% of our planet's surface, but explosive eruptions can be deadly; a journey under the earth to discover why volcanoes are so dangerous.

Hurricanes, typhoons and cyclones are all the same thing with different names, but what they also have in common is their destructive power.

Archive footage and cutting-edge CGI is used to explore global disasters, illustrating the full toll these events can take and giving an understanding on how and why they occur.

Earthquakes occur when tectonic plates suddenly shift and shock waves shake the Earth's surface; they occur along fault lines -- the most active being the Ring of Fire in the Pacific Ocean and the San Andreas Fault on the American West Coast.

As floodwaters unleash havoc in Venice, Italy, experts use the latest technology and modern-day science to explore the feasibility of rebuilding it.

Bridges and tunnels revolutionized transportation-but when they fail, tragedy follows. This episode explores the world's worst collapses and fires, including a tunnel blaze in the Alps so intense it fused 20 cars together. While bridge failures send vehicles plummeting into water or ground below, tunnel fires turn confined spaces into infernos. Why do these disasters happen, and what can be done to stop them? As we build bigger and faster, we also raise the stakes.

Apollo 12 astronauts bring back something alive from the moon; NASA tracks an asteroid heading towards Earth but make an incredible discovery.

Cosmonauts are trapped in a capsule in a frozen lake; a NASA scientist investigates the Hindenburg; the full moon affects experiments.

Life may have been found on Mars; mysterious Moon Pigeons.

The evolution of life on Mars before a series of cataclysmic events transformed the planet from a watery world to a hostile one; scientists believe life will find a way to continue despite the setbacks.

The first close-up images of Pluto reveal secrets; scientists investigate if Pluto is home to a warm ocean of liquid water beneath its surface and whether this underground ocean could harbor life.

A nuclear submarine goes missing while spying on Soviet maneuvers, and its wreckage is found on the ocean floor.

Beneath Yellowstone National Park is one of the world's largest active volcanoes, and it's poised to erupt at any moment; experts use seismic technology and visual imaging to reveal its catastrophic threat.

Brand-new evidence reveals the secrets of a Nazi program to build a nuclear bomb; using cutting-edge science and technology, experts uncover classified files that reveal how close Hitler came to this terrifying super weapon.

Adolph Hitler disappears from the world in an apparent suicide at the end of World War II, but theories of his possible escape continue to circulate; experts use forensic science to examine remains that could finally solve the mystery of his fate.

The Shroud of Turin is alleged to be the burial cloth of Jesus Christ; forensic analysis is used to determine the truth.

Three inmates are said to have escaped from Alcatraz prison, but even today, it's never been proven; new evidence might finally crack this notorious cold case, as experts use forensic science and cutting-edge technology to investigate fresh leads.

The ruins of an abandoned prison are evidence of a chaotic riot that put the prisoners in charge; special access to its burnt-out interior reveals how inmates took over Ireland's Alcatraz and why it is deserted today.

Tunnels filled with human bones lie beneath the streets of Paris, and this horrifying engineering marvel points to a dark secret; new discoveries reveal why this grisly underground death maze was built and why it was abandoned.

Near the destroyed city of Pompeii, an eerie complex of underground tunnels snakes beneath a volcano, and some believe these passages were intended as a gateway to hell; new discoveries reveal exactly why they were built and why they were abandoned.

A strange complex of tunnels on the grounds of a mansion are under lock and key for a century; since its rediscovery, some believe its mysterious place is a gate to hell; new discoveries reveal its secret purpose and why it was abandoned.

On a strange island off the coast of Croatia, the mysterious ruins of a long-abandoned hideout look like they once belonged to a James Bond super-villain, and new discoveries reveal why it was built and why they were abandoned.

The ruins of a once-palatial compound contain the secrets of one of history's most notorious criminals, and new discoveries reveal why this high-security estate was built and why it was abandoned.

A ghost town in the American West was once a Gold Rush hotspot and one of the most violent places in America; today, there are legends of a secret treasure buried in the surrounding hills, and new discoveries might finally reveal its true location.

On a strange island off the coast of Croatia, the mysterious ruins of a long-abandoned hideout look like they once belonged to a James Bond super-villain, and new discoveries reveal why it was built and why they were abandoned.

The ruins of a once-palatial compound contain the secrets of one of history's most notorious criminals, and new discoveries reveal why this high-security estate was built and why it was abandoned.

A ghost town in the American West was once a Gold Rush hotspot and one of the most violent places in America; today, there are legends of a secret treasure buried in the surrounding hills, and new discoveries might finally reveal its true location.

A strange complex of tunnels on the grounds of a mansion are under lock and key for a century; since its rediscovery, some believe its mysterious place is a gate to hell; new discoveries reveal its secret purpose and why it was abandoned.

Three inmates are said to have escaped from Alcatraz prison, but even today, it's never been proven; new evidence might finally crack this notorious cold case, as experts use forensic science and cutting-edge technology to investigate fresh leads.

The ruins of an abandoned prison are evidence of a chaotic riot that put the prisoners in charge; special access to its burnt-out interior reveals how inmates took over Ireland's Alcatraz and why it is deserted today.

When a Chinese moon rover breaks down, a scientist at NASA points to a mysterious material that seemed to sabotage the Apollo missions decades earlier; the Rosetta spacecraft discovers a comet that appears to be singing.

The discovery of geysers on a moon; NASA's mission to detect life; an object is spotted approaching an asteroid.

A piece of the sun seems to have vanished; the Hubble spots an unidentified object traveling faster than light.

From the Pyramids to the Parthenon and Big Ben in London, "Unearthed" helps answer questions and crack unsolved mysteries surrounding some of the greatest wonders of the ancient and modern world. CGI animation and other state-of-the-art technology breaks down how the iconic structures and monuments were designed, built, used and, in some cases, lost and rediscovered. The series attempts to show that the future of science is key to understanding the past, providing links to unravel some of the world's greatest mysteries.

The legendary city of Kish, Iraq, lies at the cradle of human civilization and home to some of the world's first kings; using cutting-edge tech, experts investigate the buried secrets of this lost city to uncover the first origins of royalty.

Nearly a decade after the ancient site of Nimrud was destroyed by terrorists, experts return to salvage the wreckage; archaeologists piece together the remaining ruins to reveal the origins and brutal decline of a lost empire.

In 373 B.C., the Greek city of Helike vanished; archaeologists believe they've found the ruins of the great lost metropolis; using CGI, experts re-create the city's final moments and reveal its links to the greatest lost land of all -- Atlantis.

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 it's trailblazing design.

The ancient necropolis of Abusir contains strange megastructures unlike any discovered in Egypt; experts gain rare access to investigate lost tombs and forgotten rituals to reveal the secrets of Egypt's Sun Cult pharaohs.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

The Dendera Temple is one of the best-preserved temples in all of Egypt; experts decipher its mystifying zodiac images and uncover the ceremonial events that took place at this sacred site, and stunning CGI rebuilds this grand complex in its prime.

Satellite evidence of a strange building on a mysterious island owned by Jeffrey Epstein points to something sinister; experts use cutting-edge technology to investigate why it was built and what goes on here.

When investigators spot strange anomalies in the Amazon jungle, the discovery stokes rumors of a long-lost Nazi base in the Americas.

When satellite images reveal spot a strange white substance in the land of the Aztecs, experts investigate the site for extraterrestrial connections; what they find could explain the rise of one of the world's greatest civilizations.

Satellite images capture bizarre structures in the remote and inhospitable swamplands of Louisiana; experts investigate a forgotten war-torn fortress with a mysterious connection to the sinking ruins of a classified military installation.

New evidence reveals dozens of bizarre circular structures buried in the remote hills of Norway; an expert investigation uncovers a mysterious burial ground that may have been a portal to the Viking spiritual realm.

Satellite images reveal a long-lost village buried in a dense forest; archaeologists investigate and uncover a mysterious gravesite with the remains of decapitated skeletons and possible evidence of vampire burials.

Satellite images capture bizarre structures in the remote and inhospitable swamplands of Louisiana; experts investigate a forgotten war-torn fortress with a mysterious connection to the sinking ruins of a classified military installation.

New evidence reveals dozens of bizarre circular structures buried in the remote hills of Norway; an expert investigation uncovers a mysterious burial ground that may have been a portal to the Viking spiritual realm.

Satellite images reveal a long-lost village buried in a dense forest; archaeologists investigate and uncover a mysterious gravesite with the remains of decapitated skeletons and possible evidence of vampire burials.

When satellite images reveal spot a strange white substance in the land of the Aztecs, experts investigate the site for extraterrestrial connections; what they find could explain the rise of one of the world's greatest civilizations.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

The Dendera Temple is one of the best-preserved temples in all of Egypt; experts decipher its mystifying zodiac images and uncover the ceremonial events that took place at this sacred site, and stunning CGI rebuilds this grand complex in its prime.

Tourists explore the far reaches of northern Canada and gain exclusive access to polar bears on custom-built rovers; the Twin Otter aircraft drops much-needed supplies to isolated villages.

Experts use a cutting-edge, all-terrain engineering marvel to access a perilous job site covered in snow.

A special drone uses cutting-edge technology to fly deep into treacherous, hard-to-reach mountains on dangerous search and rescue missions, and a hi-tech ice machine works tirelessly at a Toronto airport to keep flights running in brutal conditions.

Adam and Jamie investigate the ability of hit men to take down a target.

Adam and Jamie, along with Al Jean, the executive producer of "The Simpsons," test occurrences from the show.

Stow your tray tables because in this aviation extravaganza Adam and Jamie tackle two flights of fantasy.

Adam and Jamie test whether or not hands-free driving is a safe way to make a call while behind the wheel.

Adam and Jamie blow up a boat with 1,000 lbs. of high explosive; homemade machine gun from the "Breaking Bad" finale.

Adam and Jamie put the pedal to the metal and set out to test two tall tales from the street racing world; they investigate whether oversteering increases agility and if reverse parking is still possible using the drifting technique.

Adam and Jamie challenge the science of virtual worlds from video games.

When dams break, devastation follows; Derna, Malpasset, Brumadinho, three disasters that turned engineering failures into mass tragedies.

Bridge collapses have etched hard lessons into the history of engineering; Tacoma, Minneapolis, Genoa, symbols of innovation that have become stark reminders of what happens when flaws go unchecked.

Look back at the Tenerife, Kegworth, and Paris Concorde air disasters; investigate the design defects that made these aircraft vulnerable; look at the role air traffic miscommunications played; relive the terrible moments before disaster struck.

Pinpoint the mistakes that cause major structural failures; explore the preventable explosion inside London's Ronan Point; the code violations that collapsed Lalita Park; the short circuit that set off a deadly fire in Tehran's Plasco Building.

Drill down on maintenance and safety lapses that derailed amusement park rides.

Hunt for the root cause of atomic accidents; examine the Windscale fire, which led to safer reactor designs; learn why swift crisis management helped in the Three Mile Island incident; see why improper waste disposal fuelled the Kyshtym disaster.

Experts examine declassified documents to uncover the true story behind the worst nuclear disaster in history.

Hunt for the root cause of atomic accidents; examine the Windscale fire, which led to safer reactor designs; learn why swift crisis management helped in the Three Mile Island incident; see why improper waste disposal fuelled the Kyshtym disaster.

Experts examine declassified documents to uncover the true story behind the worst nuclear disaster in history.

Drill down on maintenance and safety lapses that derailed amusement park rides.

When dams break, devastation follows; Derna, Malpasset, Brumadinho, three disasters that turned engineering failures into mass tragedies.

Bridge collapses have etched hard lessons into the history of engineering; Tacoma, Minneapolis, Genoa, symbols of innovation that have become stark reminders of what happens when flaws go unchecked.

The world's only actual all-terrain vehicle is an arctic mega monster that can conquer land, snow and water; a machine that can climb mountains.

When melting ice threatens to flood a town, a 22-ton amphibious mega machine battles the elements to save the day; in the Arctic, the Canadian Air Force relies on a massive transport aircraft to deliver supplies and personnel to far-off places.

Military search and rescue efforts in deadly arctic conditions rely on a specialized helicopter with unrivaled power and endurance, and special access reveals how it works; in the Alps, a monster snow blower keeps trains running in dangerous weather.

Sidecars; frozen French toast; refrigerator compressors; superchargers.

Custom knee braces; air conditioners; window films; motorcycle exhaust.

More everyday items are put under the microscope; discovering how solid state drives, eyeshadow, limousines and dead blow hammers are made.

More everyday items are put under the microscope; discovering how dragster tyres, icing, floating docks and spiral pipes are made.

Statue restoration; tripods; Polish sausage.

Champagne; ATMs; marine turbochargers.

Explore the ins and outs of the making of sharpening steels, bladder pumps, ironing boards and kayak paddles.

Learning how champagne hoods and foils, pneumatic delivery systems, espresso machines and pizza ovens are made.

Underwater robots; lasagna; band saws; ski trekking poles.

An insight into the making of laminated wood beams, off-road sport utility vehicles, veggie burgers and augers.

Discover how turbochargers, enchiladas and watches are made.

Patterned glass panels; road cases; stop-frame animation.

Subterranean military fortresses situated on the southern coast of Ireland have protected against enemy invasion for over 400 years, and now, experts investigate how this powerful stronghold transformed into a brutal and terrifying prison.

Buried nearly a mile beneath the Black Hills of South Dakota is a cutting-edge laboratory at the forefront of astonishing scientific research; experts reveal advancements engineers achieved more than a century ago that keep it operating today.

A decommissioned missile launch facility in Kansas remained one of the best kept subterranean military secrets of the Cold War; experts reveal how this abandoned underground complex transformed into a state-of-the-art survival bunker.

Hidden beneath the town of Ramsgate, England, lies a hidden network of over three miles of air raid tunnels; experts investigate and uncover an extensive WWII bomb shelter that became a permanent refuge for many civilians after a devastating attack.

A forgotten world of ancient underground passages and medieval engineering lies hidden beneath the town of Exeter, England; experts investigate and reveal how this ambitious tunnel system was the result of one of the deadliest epidemics in history.

Retracing the steps of freedom seekers escaping on the Underground Railroad, archaeologists use high tech to explore a Florida fort that was nearly erased from history.

Archaeologists unearth the lost community of Quindaro, Kan., a long-forgotten abolitionist town that shielded Freedom Seekers from bounty hunters; in Illinois, experts use tech tools to explore a secret underground tunnel.

Archaeologists uncover evidence of a Freedom Seeker community in the swampy marshlands between Virginia and North Carolina; in Maryland, experts investigate artifacts that may confirm the location of Harriet Tubman's childhood home.

Underwater archaeologists search for the wreck of the USS Planter, a Civil War vessel seized by Freedom Seekers to escape the Confederacy; in Canada, experts use tech to uncover how Freedom Seekers lived once they made it to their new homeland.

Archaeologists unearth the lost community of Quindaro, Kan., a long-forgotten abolitionist town that shielded Freedom Seekers from bounty hunters; in Illinois, experts use tech tools to explore a secret underground tunnel.

Archaeologists uncover evidence of a Freedom Seeker community in the swampy marshlands between Virginia and North Carolina; in Maryland, experts investigate artifacts that may confirm the location of Harriet Tubman's childhood home.

Underwater archaeologists search for the wreck of the USS Planter, a Civil War vessel seized by Freedom Seekers to escape the Confederacy; in Canada, experts use tech to uncover how Freedom Seekers lived once they made it to their new homeland.

Retracing the steps of freedom seekers escaping on the Underground Railroad, archaeologists use high tech to explore a Florida fort that was nearly erased from history.

Buried nearly a mile beneath the Black Hills of South Dakota is a cutting-edge laboratory at the forefront of astonishing scientific research; experts reveal advancements engineers achieved more than a century ago that keep it operating today.

A decommissioned missile launch facility in Kansas remained one of the best kept subterranean military secrets of the Cold War; experts reveal how this abandoned underground complex transformed into a state-of-the-art survival bunker.

A NASA probe captures an image of a familiar structure on Mars' surface.

A mysterious object is orbiting Saturn, and it looks just like the Death Star; new evidence might shed new light on the mysterious death of Yuri Gagarin, the first man in space; when a cutting-edge satellite vanishes, fears of a space war escalate.

When astronomers discover a rogue black hole speeding through the Milky Way, they investigate how much danger this cosmic monster poses to Earth, and what would happen if it ever entered our solar system.

Neutron stars are strange and violent phenomena that defy the laws of physics, and new discoveries reveal that these bizarre nightmares are far more deadly than previously believed, with the power to destroy planets and even other stars.

Supernovas are the violent death of giant stars, and new discoveries reveal that these cataclysmic events create the elements that are essential to all life in the universe.

New discoveries reveal the truth behind the Loch Ness Monster, and experts investigate the world's most mysterious waters in search of evidence that a prehistoric monster could still be lurking in the deep.

New discoveries suggest that a sea beast like the Kraken could have existed, and experts examine a strange monster that could give shocking answers into this underwater mystery.

New discoveries uncover the dark secrets of Egypt's strange half-man, half-lion beast, revealing why the pharaohs were so intent on transforming into this powerful and ferocious monster.

New discoveries reveal the bloody origin of the feathered snake god, and experts investigate why the ancient Mesoamericans believed that human sacrifice was the only way to appease the deadly monster.

A new excavation at the mysterious home of the Minoans leads to a startling discovery about real-life origins of the Minotaur, and experts decode artifacts that point to bloody human sacrifices for the ferocious monster.

Werewolves were once so feared, people suspected of the power were hunted and killed, but even so, many admitted that they could become these deadly creatures, and new evidence reveals why a powerful hallucinogenic drug could be to blame.

Dinosaur fossil season has begun, and Montana rancher Clayton Phipps finds what might be an extremely rare and valuable fossil on his family's property.

Clayton Phipps continues his excavation of a rare carnivorous dinosaur on his Montana ranch; Mike Harris and son Jake prepare to sell their prized tyrannosaurus-rex fossil; Aaron Bolan hunts for an ankylosaurus.

Clayton Phipps and his team prepare to flip a 20,000-pound carnivore fossil out of the earth and onto a flatbed to get it to the lab for analysis; Mike Harris hunts for a duckbill skull; Jared Hudson uncovers an ancient reptile.

Clayton must haul his 20,000-pound dinosaur fossil over 200 miles to a lab where it will finally be identified; the Harris/Bolan clan chases poachers off of their land; Jared makes a last-ditch effort to bring in some money this season.

Clayton returns to his ranch in Montana to hunt for quick finds at Old Faithful. In Wyoming, Mike Harris and his team continue excavating their triceratops site hoping to uncover the valuable horns.

In Montana, Clayton Phipps prepares to learn if his carnivore skeleton belongs to a tyrannosaurus rex or the controversial nanotyrannus; in Wyoming, Mike Harris and Aaron Bolan race against the impending winter digging at a promising new site.

One of the world's greatest prehistoric mysteries, the dinosaurs; a dig for new dinosaur bones; a road trip through the Midwest.

Clayton returns to his ranch in Montana to hunt for quick finds at Old Faithful. In Wyoming, Mike Harris and his team continue excavating their triceratops site hoping to uncover the valuable horns.

In Montana, Clayton Phipps prepares to learn if his carnivore skeleton belongs to a tyrannosaurus rex or the controversial nanotyrannus; in Wyoming, Mike Harris and Aaron Bolan race against the impending winter digging at a promising new site.

One of the world's greatest prehistoric mysteries, the dinosaurs; a dig for new dinosaur bones; a road trip through the Midwest.

Clayton must haul his 20,000-pound dinosaur fossil over 200 miles to a lab where it will finally be identified; the Harris/Bolan clan chases poachers off of their land; Jared makes a last-ditch effort to bring in some money this season.

Werewolves were once so feared, people suspected of the power were hunted and killed, but even so, many admitted that they could become these deadly creatures, and new evidence reveals why a powerful hallucinogenic drug could be to blame.

Dinosaur fossil season has begun, and Montana rancher Clayton Phipps finds what might be an extremely rare and valuable fossil on his family's property.

Scientists wonder why Jupiter is hotter than it should be; the Curiosity Rover finds something strange on Mars; detectives turn to NASA for help with a murder cold case.

A mars mission captures an image of a strange structure on the planet; an intriguing sight on the dark side of the moon; a planet-eating star gives scientists a peek of Earth's bleak future.

Experts investigate if a nearby exoplanet could be the home to an alien civilization of strange, metallic monsters, after a new discovery confirms that life can thrive on such a strange world.

Black holes are not the violent monsters people think they are, and new discoveries reveal that they might have been essential to creating stars, giving light, and building the universe itself.

Nebulas are the strange structures of cosmic gas and dust where stars are born and die, and new discoveries reveal the secrets of these mysterious places.

Investigating whether a machine can read personalities; an ancient golden mask painted with human blood; a cursed chicken pot.

Containing intricately carved concentric circles, the Towie Ball is one of the finest Neolithic stoneworks ever discovered; using cutting-edge imaging technology, experts investigate the purpose behind this 5,000-year-old black stone mystery.

In 1953, a team of archaeologists uncover a bizarre, plastered human skull in the ancient city of Jericho; experts investigate the mysterious purpose and identity behind this 9,000-year-old clay-covered artifact.

A minuscule metal sphere containing two microscopic holes could be the smallest murder weapon in history; experts explore how this tiny object is linked to one of the most bizarre true crime cases of the 20th century.

The shattered skull of a 19th century railway worker is now one of the most astonishing objects in the history of medical science; experts explore this traumatic injury to reveal how it changed the field of neuroscience.

A stone sphere, a hook and five fragments of wood are the only objects ever discovered inside the Great Pyramid of Giza; experts investigate if they can explain the mysteries behind the only surviving Wonder of the Ancient World.

Investigating whether a gold death mask is the face of a king who fought in the Trojan Wars; three ancient chalk carvings could be the secret to constructing Stonehenge; how a printing plate from the UK Treasury ended up in an Austrian lake.

A mysterious explosion rocks the streets in Cambodia, and it may be linked to a temple complex; motorcyclists encounter what may be a legendary humanoid cannibal.

When cameras capture footage of a massive, never-before-seen sea creature in mysterious waters near Japan, some experts wonder if it's an undiscovered underwater monster; using cutting-edge tech, investigators hunt for this beast of the deep.

Cameras capture footage of a highway swarmed with snake-like creatures and an unexplained ooze; the latest tech reveals where they came from and their top-secret purpose.

When a massive plume of smoke suddenly erupts from the ground in Manhattan, experts investigate if this terrifying event is evidence of a volcano that's waking up beneath the streets of New York City -- and if it's almost due to blow.

When cameras record a strange creature in the wilderness perform an incredible feat of strength, some suspect it's hard proof of Bigfoot; using cutting-edge science, experts investigate if they've discovered the spawn of Sasquatch and Iron Man.

When cameras capture footage of a strange, blob-like alien in the Amazon jungle, some experts suspect that the origins of this monster are stranger-than-fiction; using cutting-edge science, investigators try to explain this bizarre beast.

When a massive plume of smoke suddenly erupts from the ground in Manhattan, experts investigate if this terrifying event is evidence of a volcano that's waking up beneath the streets of New York City -- and if it's almost due to blow.

When cameras record a strange creature in the wilderness perform an incredible feat of strength, some suspect it's hard proof of Bigfoot; using cutting-edge science, experts investigate if they've discovered the spawn of Sasquatch and Iron Man.

When cameras capture footage of a strange, blob-like alien in the Amazon jungle, some experts suspect that the origins of this monster are stranger-than-fiction; using cutting-edge science, investigators try to explain this bizarre beast.

Cameras capture footage of a highway swarmed with snake-like creatures and an unexplained ooze; the latest tech reveals where they came from and their top-secret purpose.

A stone sphere, a hook and five fragments of wood are the only objects ever discovered inside the Great Pyramid of Giza; experts investigate if they can explain the mysteries behind the only surviving Wonder of the Ancient World.

Investigating whether a gold death mask is the face of a king who fought in the Trojan Wars; three ancient chalk carvings could be the secret to constructing Stonehenge; how a printing plate from the UK Treasury ended up in an Austrian lake.

An astronomer records an unusual radio signal from beyond the solar system; FBI agents find classified documents at the home of a NASA scientist; when scientists discover strange DNA in the octopus, they examine if their origins could be alien.

After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers; experts investigate if the mysterious object is an alien spacecraft hiding at the edge of the solar system.

When a former Area 51 insider alleges that the Roswell UFO incident was a nefarious Soviet conspiracy masterminded by Stalin, experts investigate if it was indeed an enemy plot against America -- or if the confession is just another cover-up.

Discoveries about interstellar space, the space between the universe's stars, reveal that it's not empty and unremarkable as previously thought, but filled with weird objects and strange phenomena that might hold the darkest secrets of the cosmos.

New discoveries cause astronomers to question if the Big Bang really happened; using the latest science, they investigate if it wasn't just the start of the universe but many mysterious multiverses.

A precocious plan is needed to transport a rig from Texas to an oilfield off the Indian coast; a crew has to lift a 870-ton piece aboard a cargo ship to build a warship.

In Louisiana, tons of biofuel is destined for a power plant across the Atlantic; a ship loader dangles in the sky; a faulty radio could squash the operation.

$34 million worth of cars must be shipped across the Atlantic; nuclear parts needing to be shipped present a unique set of problems.

A yacht crosses the Atlantic Ocean during hurricane season; a crew needs to move a 20-ton aircraft cabin trainer to Africa.

Shippers in Virginia have a few hours to move 5,700 tons of cargo onto a barge, but a thunderstorm threatens the chances of completing the task; one of the world's largest cruise ships needs to restock.

In order to build a colossal airplane, the crew needs to gather parts from around the world; three dump trucks need to be shipped.

An unprecedented cycle of freezing and thawing causes dramatic destruction to a landmark bridge in Pennsylvania; experts investigate and reveal how a sudden surge of icy flood water buckled pier foundations weakened from years of erosion.

A devastating rail disaster outside a small North Dakota town results in cargo erupting in massive explosions; experts use the latest science to investigate and uncover an engineering flaw poised for catastrophic failure.