In 1587, more than 100 English colonists who were settled on Roanoke Island vanish, baffling historians for centuries; experts use forensic archaeology to investigate the true story behind one of America's oldest mysteries.

Historical and modern examinations of constellations.

Studies are currently under way looking for evidence of dark energy in the movement of galaxies.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

Hitler's final days are revealed through recently discovered eyewitness accounts.

A look at experimental ships and revolutionary designers that have changed the tide of war through the centuries.

The story of the greatest tank battle the world has ever seen.

Investigators determine why a plane crashes on Alaska's Kenai Peninsula.

Hadrian's Villa is the largest Roman palace ever constructed and demonstrates the opulent peak of Rome's ancient engineering; experts investigate secrets that could reveal the truth behind one of Rome's most enigmatic emperors.

During the Battle of the Bulge, a young U.S. scout gets trapped behind enemy lines.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

Experts go on a search for New York's most remarkable hidden stories, involving the Statue of Liberty, the 21 Club, and "Typhoid Mary.".

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

A new batch of the country's top artists must capture their version of a gritty industrial landscape; with only four hours, and ever changing weather conditions, the artists are pushed to their limits.

Seven top artists travel to stunning Lake Rosseau for their final four-hour painting showdown for the $10,000 grand prize.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

A new batch of the country's top artists must capture their version of a gritty industrial landscape; with only four hours, and ever changing weather conditions, the artists are pushed to their limits.

Seven top artists travel to stunning Lake Rosseau for their final four-hour painting showdown for the $10,000 grand prize.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

Stumble upon the largest Anglo-Saxon hoard in the wake of an ominous storm, then assess a precious stone's bloody curse. Discover the unforeseen consequences of disturbing an immortal Chinese army and get mesmerized by a divisive Egyptian sculpture.

Unearthing a doomed ice age discovery in Russia's Arctic; unveiling a Dutch painting that spells misfortune; digging up a king's unlikely final resting place in an English marsh.

Tallying the carnage that followed the disappearance of a Russian wonder; exploring Incan sacrificial rituals; studying a global rivalry sparked by an Egyptian stone; seeing the haunting paintings of a Spanish artist who descended into madness.

Unraveling centuries of bloodshed and avarice surrounding an unlucky Indian jewel; exploring a car where a Hollywood star met an untimely death; assessing the violent end of an English king's legacy and an ominous Assyrian curse etched in stone.

Uncovers the origins of the curses surrounding the Fabergé eggs, the Unlucky Mummy and more in a historical journey from revolutionary Russia to Ancient Egypt.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

A look at Naval warfare's fastest combat ships and how the advantage of speed determined the outcome of some of the great seas battles of the last 150 years.

A large construction load, a massive repair, and a fallen soldier weigh heavily on the crews.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

A large construction load, a massive repair, and a fallen soldier weigh heavily on the crews.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

An exploration of little-known stories behind San Francisco landmarks and locations, including its golden fire hydrant and Dutch windmills.

A large construction load, a massive repair, and a fallen soldier weigh heavily on the crews.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

Salvor and treasure seeker Phil Risko sets out to retrieve valuable 80-year-old hardwood logs from the bottom of the sea; a multi-million dollar cruise vessel undergoes emergency repairs in Panama.

In 1587, more than 100 English colonists settle on Roanoke Island and soon vanish, baffling historians for centuries; now, experts use the latest forensic archaeology to investigate the true story behind America's oldest, most controversial mystery.

An exploration of the science behind the Anthropic Principle.

Isaac Brock's daring made him a hero, but may also be his flaw.

Salvor and treasure seeker Phil Risko sets out to retrieve valuable 80-year-old hardwood logs from the bottom of the sea; a multi-million dollar cruise vessel undergoes emergency repairs in Panama.

Examining Landsat 8, the advanced planetary explorer with a 900 million dollar price tag, which is designed to reveal complex and ever-changing details undetectable by the human eye.

Paid programming.

An exploration of the science behind the Anthropic Principle.

Isaac Brock's daring made him a hero, but may also be his flaw.

A look at how first ladies have changed their role through activism, brains and toughness.

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

An examination of the Earth's freshwater supply and the ongoing challenge to maintain its quantity and quality as the planet's population soars.

A look at how first ladies have changed their role through activism, brains and toughness.

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

A crumbling hill in the Peak District and dunes in California causes the closure of two roads; a route used by the French Resistance is closed in 2003.

Investigating the seasonality of nomadic life and how traditional animal practices helped Mongol armies outmanoeuvre their enemies; a look at Genghis Khan's trade and communication strategies and the empire's fate after his death in 1227.

Hard to imagine that animals can survive in this arid land, but an aerial view of the life saving water holes will offer a rare glimpse of Namibia's wildlife.

An armed, suicidal man and a suspicious powdery substance threaten the staff of Ted Stevens while rough weather may ground a 70-year-old cargo plane.

A mid-air engine shutdown forces maintenance teams to scramble. A helicopter pilot flies engineers onto live power lines. A rookie pilot flies his first solo anti-poaching patrol, and scientists fly to track down a pride of lion.

Hard to imagine that animals can survive in this arid land, but an aerial view of the life saving water holes will offer a rare glimpse of Namibia's wildlife.

An armed, suicidal man and a suspicious powdery substance threaten the staff of Ted Stevens while rough weather may ground a 70-year-old cargo plane.

A mid-air engine shutdown forces maintenance teams to scramble. A helicopter pilot flies engineers onto live power lines. A rookie pilot flies his first solo anti-poaching patrol, and scientists fly to track down a pride of lion.

A tour of London exploring objects with secret histories, including its black cabs, the Marble Arch and the Horse Guards Clock.

Hard to imagine that animals can survive in this arid land, but an aerial view of the life saving water holes will offer a rare glimpse of Namibia's wildlife.

An armed, suicidal man and a suspicious powdery substance threaten the staff of Ted Stevens while rough weather may ground a 70-year-old cargo plane.

A mid-air engine shutdown forces maintenance teams to scramble. A helicopter pilot flies engineers onto live power lines. A rookie pilot flies his first solo anti-poaching patrol, and scientists fly to track down a pride of lion.

Responding to an emergency call, Northstar marine sets out to salvage a sunken tug in the Delaware Bay; following the devastation caused by Hurricane Sally, Capt. Chris Ward and his crew work to salvage sunken sailboats and wrecked powerboats.

Experts go on a search for New York's most remarkable hidden stories, involving the Statue of Liberty, the 21 Club, and "Typhoid Mary.".

Charles de Salaberry is forced to rely on cunning tactics.

With her husband wounded, Laura Secord sets out to warn the British of a possible American attack.

Responding to an emergency call, Northstar marine sets out to salvage a sunken tug in the Delaware Bay; following the devastation caused by Hurricane Sally, Capt. Chris Ward and his crew work to salvage sunken sailboats and wrecked powerboats.

An exploration of the science behind the Anthropic Principle.

Paid programming.

Charles de Salaberry is forced to rely on cunning tactics.

With her husband wounded, Laura Secord sets out to warn the British of a possible American attack.

The new masters of the universe refuse to limit their imaginations, exploring space tourism, asteroid mining and colonies on Mars.

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

A look at artists in film, dance, and sculpture whose works are uniquely American, including ballerina Misty Copeland, actress Nicole Kidman, and more.

The new masters of the universe refuse to limit their imaginations, exploring space tourism, asteroid mining and colonies on Mars.

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

Incredible footage, colourised for the first time, chronicles the final days of the Third Reich and the brutal battle for Berlin, though German defeat looked certain. Nazi soldiers persisted fighting despite the inevitability of their downfall.

An armed, suicidal man and a suspicious powdery substance threaten the staff of Ted Stevens while rough weather may ground a 70-year-old cargo plane.

A mid-air engine shutdown forces maintenance teams to scramble. A helicopter pilot flies engineers onto live power lines. A rookie pilot flies his first solo anti-poaching patrol, and scientists fly to track down a pride of lion.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

Immerse yourself in the Roaring Twenties inside a hidden art deco grocery store that was once an LGBTQ+ club and a secret Nazi hangout; learn how the city's most popular street food, currywurst, emerged from the ruins of the Second World War.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

A mysterious object is raised from the depths of the ocean; a stranded speedboat; an elite crew works to salvage America's biggest shipwreck before hurricane season.

An exploration of little-known stories behind San Francisco landmarks and locations, including its golden fire hydrant and Dutch windmills.

Tecumseh forges an alliance with the British in pursuit of his dream.

John Norton leads Six Nations warriors against the invading Americans.

Charles de Salaberry is forced to rely on cunning tactics.

Paid programming.

An exploration of little-known stories behind San Francisco landmarks and locations, including its golden fire hydrant and Dutch windmills.

Tecumseh forges an alliance with the British in pursuit of his dream.

John Norton leads Six Nations warriors against the invading Americans.

We examine the life of the Nine Days Queen as the Tower prepares for a ceremony on the anniversary of her execution in 1554.

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

Interviews with artists in film, theater, opera, and more who overcame poverty, physical disabilities, and trauma to achieve success, including Viola Davis.

We examine the life of the Nine Days Queen as the Tower prepares for a ceremony on the anniversary of her execution in 1554.

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

In 1943, the United States engages in a new series of island-hopping invasions; the first stop is the Tarawa Atoll, where troops embark upon the largest amphibious invasion ever staged in the Pacific to fight one of the costliest battles of the war.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A 70,000-seat stadium defies seismic forces and international flight paths in LA. Zaha Hadid's dramatically twisted 33-story tower rises around ancient vaults in Malta.

Two examples of repurposing truly done right: an abandoned 42-tube silo complex remolded as an epic art gallery, and an ancient fortress carved into a family home.

Marie Favereau reveals how the Mongols shaped the world and how a disease led to the empire's end.

Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre.

Two examples of repurposing truly done right: an abandoned 42-tube silo complex remolded as an epic art gallery, and an ancient fortress carved into a family home.

Marie Favereau reveals how the Mongols shaped the world and how a disease led to the empire's end.

Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre.

Walk the cobblestone streets and take in the city's urban design to uncover the key to it's revolutionary past; discover why tourists should skip the Eiffel Tower and climb the ugliest skyscraper in Europe instead.

Two examples of repurposing truly done right: an abandoned 42-tube silo complex remolded as an epic art gallery, and an ancient fortress carved into a family home.

Marie Favereau reveals how the Mongols shaped the world and how a disease led to the empire's end.

Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre.

A salvage maestro returns to raise more valuable tropical hardwood trying not to wreck his own boat in the process; the multimillion dollar operation to salvage America's biggest shipwreck.

A tour of London exploring objects with secret histories, including its black cabs, the Marble Arch and the Horse Guards Clock.

East coast shipper creates a private fleet to seize American ships.

How humans discovered the planets and how they became a complex solar system.

Tecumseh forges an alliance with the British in pursuit of his dream.

Paid programming.

A tour of London exploring objects with secret histories, including its black cabs, the Marble Arch and the Horse Guards Clock.

East coast shipper creates a private fleet to seize American ships.

How humans discovered the planets and how they became a complex solar system.

An inside look at gruesome history of the White Tower, the tragic relationship of Henry VIII and Anne Boleyn, and what it's like to work in London's oldest building.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

A collection of artists who look to the Earth for inspiration, including a wildlife photographer, an orchestra that turns trash into musical instruments and more.

An inside look at gruesome history of the White Tower, the tragic relationship of Henry VIII and Anne Boleyn, and what it's like to work in London's oldest building.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

By the summer of 1944, the United States is gaining the upper hand in the Pacific War with better training, troop numbers and supply lines; it aims for the heart of Japan's inner defense ring, engaging in a naval battle for Saipan in the Marianas.

Two examples of repurposing truly done right: an abandoned 42-tube silo complex remolded as an epic art gallery, and an ancient fortress carved into a family home.

Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre.

Stories of ghost towns, including Pripyat and Hashima Island.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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.

Stories of ghost towns, including Pripyat and Hashima Island.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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.

Get the inside scoop on a Michelin-star meal that's less than three dollars; learn the history of hawker food; get a personal tour from Toilet Man to learn how beautiful gardens and obsessively clean toilets made the city rich.

Stories of ghost towns, including Pripyat and Hashima Island.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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 team must remove thousands of wrecked cars from the hull before it becomes an environmental disaster; repairing a vessel before the waters of the River Solent flood the hull.

Immerse yourself in the Roaring Twenties inside a hidden art deco grocery store that was once an LGBTQ+ club and a secret Nazi hangout; learn how the city's most popular street food, currywurst, emerged from the ruins of the Second World War.

Venus offers a complex story with its thick atmosphere and a substantial amount of matter.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

The team must remove thousands of wrecked cars from the hull before it becomes an environmental disaster; repairing a vessel before the waters of the River Solent flood the hull.

Immerse yourself in the Roaring Twenties inside a hidden art deco grocery store that was once an LGBTQ+ club and a secret Nazi hangout; learn how the city's most popular street food, currywurst, emerged from the ruins of the Second World War.

Venus offers a complex story with its thick atmosphere and a substantial amount of matter.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A behind-the-scenes look at the meticulous preparations involved in carrying out the Tower's biggest naval event: the Constable's Dues.

The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state.

Interviewing ambitious artists about their craftsmanship, including author Stephen King, painter Mark Bradford and more.

A behind-the-scenes look at the meticulous preparations involved in carrying out the Tower's biggest naval event: the Constable's Dues.

The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state.

Look at the opening acts of WW II as the Soviets launch their Winter War in Finland; see why the global media focused on the grim, snowy fighting while the Axis turned its eyes toward neighboring Norway and the rich mineral wealth of the north.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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.

A mystery emerges after a single-engine floatplane crashes.

The history and evolution of America's most legendary spy plane.

A platoon of Canadian tank hunters engages a column of Nazi Panther tanks at nighttime.

A mystery emerges after a single-engine floatplane crashes.

The history and evolution of America's most legendary spy plane.

A platoon of Canadian tank hunters engages a column of Nazi Panther tanks at nighttime.

Stories of ghost towns, including Pripyat and Hashima Island.

A mystery emerges after a single-engine floatplane crashes.

The history and evolution of America's most legendary spy plane.

A platoon of Canadian tank hunters engages a column of Nazi Panther tanks at nighttime.

Salvage crews work to install the world's largest environmental protection barrier; flying into a highly volatile region, crews battle pirates, tornadoes, and riots to salvage a wrecked cargo ship.

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

Salvage crews work to install the world's largest environmental protection barrier; flying into a highly volatile region, crews battle pirates, tornadoes, and riots to salvage a wrecked cargo ship.

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

The story of the construction of ancient Egypt's first pyramid, built 4,700 years ago to help the Pharaoh Djoser achieve immortality.

Exploring how Pharaoh Snefru shifted the pyramid age into high gear by ordering three massive monuments.

Investigating whether the pharaoh who ordered the building of the Great Pyramid of Giza was really the tyrant he was said to be.

Exploring the final building phase of the Great Pyramid of Giza and the rituals that took place after a pharaoh dies.

Egyptologists try to determine who built the Sphinx and why by exploring the power struggles between Khufu's sons after the pharaoh's death.

Egyptologists examine ancient sites and relics to determine what brought the age of the pyramids to an end.

The history and evolution of America's most legendary spy plane.

A United States army cook manages to stall Himmler's attempt to recapture Strasbourg.

A drone team at the location of the Battle of the Bulge hunts for the long-lost encampment of an African American troop.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

A drone team at the location of the Battle of the Bulge hunts for the long-lost encampment of an African American troop.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

The U.S. gains information about space borders using unwanted battleship guns; a V2 rocket is developed from the remains of a secret Nazi base.

A drone team at the location of the Battle of the Bulge hunts for the long-lost encampment of an African American troop.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

Crews work around the clock to build the world's largest underwater concrete bed to salvage the Costa Concordia; operating in secrecy, teams work under high security to repair one of the world's most iconic cruise liners.

Walk the cobblestone streets and take in the city's urban design to uncover the key to it's revolutionary past; discover why tourists should skip the Eiffel Tower and climb the ugliest skyscraper in Europe instead.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

A dramatic repair mission gives the Hubble Space Telescope another chance to capture stunning pictures like only it can.

Crews work around the clock to build the world's largest underwater concrete bed to salvage the Costa Concordia; operating in secrecy, teams work under high security to repair one of the world's most iconic cruise liners.

Walk the cobblestone streets and take in the city's urban design to uncover the key to it's revolutionary past; discover why tourists should skip the Eiffel Tower and climb the ugliest skyscraper in Europe instead.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

A dramatic repair mission gives the Hubble Space Telescope another chance to capture stunning pictures like only it can.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

Archaeologists reveal how the Colosseum came to symbolize the might of Rome.

Archaeologists investigate the fate of Nero and his buried Golden Palace.

An exploration of Hadrian's Wall, the largest structure built by the Romans; experts examine the Wall, its forts, gatehouses, and garrison town to see how civilization and culture grew.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

Witness wild weather, emergency landings, animal invaders and pandemic panics at Alaska's Ted Stevens Airport.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

Witness wild weather, emergency landings, animal invaders and pandemic panics at Alaska's Ted Stevens Airport.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

The history of a stretch of concrete known as Hitler's Bridge; the highest bridge in the world collapses.

Witness wild weather, emergency landings, animal invaders and pandemic panics at Alaska's Ted Stevens Airport.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

Uncover the story of how fast food conquered America and then the world; ponder the birth of the beef patty and the assembly-line kitchens it inspired; see how a failing chicken fryer struck gold and learn how a burger joint ramped down the cold war.

Where earth meets sky: how the most thrilling and dangerous point at the top of the world continues to fascinate, and what it takes to conquer the Big One.

In the future, telescopes will allow scientists to see further to planets that may support life.

In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

Uncover the story of how fast food conquered America and then the world; ponder the birth of the beef patty and the assembly-line kitchens it inspired; see how a failing chicken fryer struck gold and learn how a burger joint ramped down the cold war.

East coast shipper creates a private fleet to seize American ships.

Paid programming.

In the future, telescopes will allow scientists to see further to planets that may support life.

In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state.

At the heart of Saqqara, the largest necropolis in Egypt is the Step Pyramid of Djoser, built around 2600 BC.

Meidum is the least-known of the pyramids of Egypt as it stretches skywards to resemble a castle keep.

On the site of Dahshur, south of Cairo, are two revolutionary monuments which seem to be the first real pyramids.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

Egyptologists believe there was a perfect pyramid, hidden in the sands of Abu Rawash, which served as a tomb for the pharaoh Djedefre.

Stories of ghost towns, including Pripyat and Hashima Island.

Marie Favereau reveals how the Mongols shaped the world and how a disease led to the empire's end.

A flight over the African nation of Zambia reveals its ancient wonders, raging waters, diverse wildlife, and rich history.

A heavy blizzard, an earthquake, and a plane crash threaten the safety of the Ice Airports as well as the people of downtown Anchorage.

A skilled canine team tracks birds disrupting Africa's busiest airport. Mechanics race to fix a cargo hauler for the largest bush airline. Helicopter pilots meet ships near the Cape of Good Hope, while flying doctors deliver life-saving surgery.

A flight over the African nation of Zambia reveals its ancient wonders, raging waters, diverse wildlife, and rich history.

A heavy blizzard, an earthquake, and a plane crash threaten the safety of the Ice Airports as well as the people of downtown Anchorage.

A skilled canine team tracks birds disrupting Africa's busiest airport. Mechanics race to fix a cargo hauler for the largest bush airline. Helicopter pilots meet ships near the Cape of Good Hope, while flying doctors deliver life-saving surgery.

Once-great triumphs of marine engineering now left to rust include a ship graveyard in Maryland.

A flight over the African nation of Zambia reveals its ancient wonders, raging waters, diverse wildlife, and rich history.

A heavy blizzard, an earthquake, and a plane crash threaten the safety of the Ice Airports as well as the people of downtown Anchorage.

A skilled canine team tracks birds disrupting Africa's busiest airport. Mechanics race to fix a cargo hauler for the largest bush airline. Helicopter pilots meet ships near the Cape of Good Hope, while flying doctors deliver life-saving surgery.

Score the inside scoop on six of the wealthiest people in history; meet the richest man on earth today, a german banker who financed a religious empire in the 1500s, a norman king who stole England and three robber barons from 20th-century America.

Get the inside scoop on a Michelin-star meal that's less than three dollars; learn the history of hawker food; get a personal tour from Toilet Man to learn how beautiful gardens and obsessively clean toilets made the city rich.

Advanced telescopes capture images of the night sky from the Atacama Desert.

The Northern Lights tells the story of the makeup of the planet, the sun and possibly life on other planets.

Score the inside scoop on six of the wealthiest people in history; meet the richest man on earth today, a german banker who financed a religious empire in the 1500s, a norman king who stole England and three robber barons from 20th-century America.

In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

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Advanced telescopes capture images of the night sky from the Atacama Desert.

The Northern Lights tells the story of the makeup of the planet, the sun and possibly life on other planets.

We examine life for the Yeoman Warders once they're off duty and gain unique access to a history-making archeological dig by the Tower's parish church.

At the heart of Saqqara, the largest necropolis in Egypt is the Step Pyramid of Djoser, built around 2600 BC.

An eight-part series celebrating the world's most influential artists in music, film, photography, dance, and more and learning the secrets of their craft.

We examine life for the Yeoman Warders once they're off duty and gain unique access to a history-making archeological dig by the Tower's parish church.

At the heart of Saqqara, the largest necropolis in Egypt is the Step Pyramid of Djoser, built around 2600 BC.

The German war industry urgently needs more iron; Hitler has his eye on the Norwegian coast and especially on the harbor of Narvik, through which iron ore is shipped from Sweden.

A heavy blizzard, an earthquake, and a plane crash threaten the safety of the Ice Airports as well as the people of downtown Anchorage.

A skilled canine team tracks birds disrupting Africa's busiest airport. Mechanics race to fix a cargo hauler for the largest bush airline. Helicopter pilots meet ships near the Cape of Good Hope, while flying doctors deliver life-saving surgery.