The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

Allied forces move to take the valuable islands of Tinian and Guam that threaten American air operations; meanwhile, Gen. Curtis LeMay is tasked with planning and executing a fire bombing campaign against Japan.

A look at the failures that forced a US submarine commander to rebuild his crew's trust, one person at a time; discovering how this commanding officer overcame dissent on board and refocused on targeting enemy ships in dangerous Japanese waters.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

Allied forces move to take the valuable islands of Tinian and Guam that threaten American air operations; meanwhile, Gen. Curtis LeMay is tasked with planning and executing a fire bombing campaign against Japan.

A look at the failures that forced a US submarine commander to rebuild his crew's trust, one person at a time; discovering how this commanding officer overcame dissent on board and refocused on targeting enemy ships in dangerous Japanese waters.

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

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

A look at key naval battles that have taken place in the Persian Gulf over the last 50 years and the warships involved, from both sides of the conflicts.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

The Navy's U.S.S. Macon flew in the 1930's, the golden age of airships, and was able to both launch and recover airplanes; telling the lost story of America's airships, their rapid rise, tragic demise, and the bold experiments in between.

A look at how the post-war period and the Cold War unfolded high up in the North; recently published archival material helps to shed light on post-war events in the Arctic.

A secret British regiment in 1942 led a daring raid on a Nazi-occupied Libyan harbor.

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

The Allies plan their landing in Normandy and devise a diversionary operation in the north; commando attacks continue and the resistance becomes more active; Hitler continues his building projects.

A look at the failures that forced a US submarine commander to rebuild his crew's trust, one person at a time; discovering how this commanding officer overcame dissent on board and refocused on targeting enemy ships in dangerous Japanese waters.

A secret British regiment in 1942 led a daring raid on a Nazi-occupied Libyan harbor.

The Allies plan their landing in Normandy and devise a diversionary operation in the north; commando attacks continue and the resistance becomes more active; Hitler continues his building projects.

Take a look at some of the escapes that took place during World War II.

A U.S. Parachute Infantry Regiment rushes to protect a critical bridge from a Nazi battle group during the opening days of the Battle of the Bulge.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

Take a look at some of the escapes that took place during World War II.

A U.S. Parachute Infantry Regiment rushes to protect a critical bridge from a Nazi battle group during the opening days of the Battle of the Bulge.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

A U.S. Parachute Infantry Regiment rushes to protect a critical bridge from a Nazi battle group during the opening days of the Battle of the Bulge.

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

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

A U.S. Parachute Infantry Regiment rushes to protect a critical bridge from a Nazi battle group during the opening days of the Battle of the Bulge.

Revisit Colditz Castle, a Nazi fortress where breakouts featured human catapults and clever disguises; meet the pilots who staged the famed Great Escape from a Polish stalag; see how 32 POWs pulled off the Warburg Wire Job in just one minute.

Relive the Flight of the Crow, a trek across Nazi-occupied Europe; find out how two Austrian mountaineers hiked their way out of the Himalayas, then learn why 378 Japanese POWs risked it all in Australia's bloody Cowra Breakout.

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

Take a look at some of the escapes that took place during World War II.

Take a look at some of the escapes that took place during World War II.

Take a look at some of the escapes that took place during World War II.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

The far south of Australia is home to the rich cultural heritage of Melbourne; a sporting mecca called the G; a brutal island prison once known as hell on Earth and ancient rainforests, providing a living link to the past.

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

Investigate the sudden death of a tycoon linked to King Tuts tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

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.

A tour of the CIA's private museum reveals some of the agency's spy craft and the missions on which they were used.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Venturing into the deep waters of the Caribbean Sea for high stakes repairs on one of the one of the world's largest open ocean fish farm operations.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Venturing into the deep waters of the Caribbean Sea for high stakes repairs on one of the one of the world's largest open ocean fish farm operations.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Venturing into the deep waters of the Caribbean Sea for high stakes repairs on one of the one of the world's largest open ocean fish farm operations.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

For more than 25 years, the shuttle was our ticket to space and our laboratory in orbit.

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

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

A tour of the CIA's private museum reveals some of the agency's spy craft and the missions on which they were used.

Incredible footage, colorized 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 in fighting despite the inevitability of their downfall.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

The Germans begin a retreat on the eve of the polar winter; the Soviet Union begins a major offensive in the north; the Finns push the Germans towards their defensive line.

Experience the deep distrust and aggression that pushes the world closer to nuclear war; follow a Soviet incursion into the territorial waters of Sweden and Finland and see how northern nations prepare for a battle that is only a button-push away.

A tour of the CIA's private museum reveals some of the agency's spy craft and the missions on which they were used.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

A breakdown on the Fairbanks runway threatens a heavy-weight military jet's urgent mission; a rookie flight instructor faces a make-or-break flight; an ice-tour pilot races against Alaskan weather; a bush airline flies a 400-mile pizza delivery.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

A breakdown on the Fairbanks runway threatens a heavy-weight military jet's urgent mission; a rookie flight instructor faces a make-or-break flight; an ice-tour pilot races against Alaskan weather; a bush airline flies a 400-mile pizza delivery.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

A breakdown on the Fairbanks runway threatens a heavy-weight military jet's urgent mission; a rookie flight instructor faces a make-or-break flight; an ice-tour pilot races against Alaskan weather; a bush airline flies a 400-mile pizza delivery.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

Examine mysterious holes in Isreal; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

Capt. John Ward and his crew are called to raise a sunken houseboat near Pensacola, Fla.; the owner of the boat wants it back, but the current occupiers of the boat living in it don't want John's services; there've been reports of gunfire too.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

A vehicle the size of a small car spent a year on Mars.

Charles de Salaberry is forced to rely on cunning tactics.

Capt. John Ward and his crew are called to raise a sunken houseboat near Pensacola, Fla.; the owner of the boat wants it back, but the current occupiers of the boat living in it don't want John's services; there've been reports of gunfire too.

Take a look at some of the escapes that took place during World War II.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

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.

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

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

A breakdown on the Fairbanks runway threatens a heavy-weight military jet's urgent mission; a rookie flight instructor faces a make-or-break flight; an ice-tour pilot races against Alaskan weather; a bush airline flies a 400-mile pizza delivery.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

The rise of submarines marks World War II at sea, leading to fierce battles above and below the waves.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

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

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

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

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

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

John Ward and his crew are called to salvage a massive barge upturned by a storm in a canal; Hickory Scuba Divers work to salvage a valuable sailboat that's sunk at its mooring.

For more than 25 years, the shuttle was our ticket to space and our laboratory in orbit.

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

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

John Ward and his crew are called to salvage a massive barge upturned by a storm in a canal; Hickory Scuba Divers work to salvage a valuable sailboat that's sunk at its mooring.

An SOS from an island of penguins sends a helicopter team on an emergency mission; a young pilot attempts a record-breaking flight; aircraft maintenance teams tackle a dangerous fluid leak; vets in Zambia stop a war between humans and elephants.

Experience the deep distrust and aggression that pushes the world closer to nuclear war; follow a Soviet incursion into the territorial waters of Sweden and Finland and see how northern nations prepare for a battle that is only a button-push away.

A tour of the CIA's private museum reveals some of the agency's spy craft and the missions on which they were used.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

The rise of submarines marks World War II at sea, leading to fierce battles above and below the waves.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs.

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

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs.

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

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs.

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

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

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

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

Historical and modern examinations of constellations.

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

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

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

Incredible footage, colorized 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 in fighting despite the inevitability of their downfall.

The Germans begin a retreat on the eve of the polar winter; the Soviet Union begins a major offensive in the north; the Finns push the Germans towards their defensive line.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S.

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs.

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

Discover shocking truths about religious rituals, sacred symbols, and spiritual traditions. Learn the brutal truth about execution rites in Roman England, look at shark bones in a Peruvian temple, and unearth a secret silver amulet in Germany.

Uncover how a royal imprisoned two princes and took the British throne. Ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Discover shocking truths about religious rituals, sacred symbols, and spiritual traditions. Learn the brutal truth about execution rites in Roman England, look at shark bones in a Peruvian temple, and unearth a secret silver amulet in Germany.

Uncover how a royal imprisoned two princes and took the British throne. Ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Discover shocking truths about religious rituals, sacred symbols, and spiritual traditions. Learn the brutal truth about execution rites in Roman England, look at shark bones in a Peruvian temple, and unearth a secret silver amulet in Germany.

Uncover how a royal imprisoned two princes and took the British throne. Ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

For more than 25 years, the shuttle was our ticket to space and our laboratory in orbit.

Historical and modern examinations of constellations.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

An elite group of British paratroopers launch a midnight raid in order to capture Hitler's unusual radar equipment.

American paratroopers are dropped behind German lines on D-Day in order to secure territory behind the beaches.

British Commandos raid two occupied Norwegian islands to wipe out fish oil factories used to make explosives.

The first invasion of the Italian Campaign of WWII: Operation Husky.

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.

Discover shocking truths about religious rituals, sacred symbols, and spiritual traditions. Learn the brutal truth about execution rites in Roman England, look at shark bones in a Peruvian temple, and unearth a secret silver amulet in Germany.

Uncover how a royal imprisoned two princes and took the British throne. Ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

A look at how the C-47 evolved from passenger plane to a transport aircraft and flying hospital in WWII and years later as a gunship in Vietnam.

Allies slug it out on the island of Peleliu in a campaign to pave the way for Gen. MacArthur's return to the Philippines; footage shows troops enduring the muddy muck in the Philippines; Japan unveils a devastating new tactic, the kamikaze.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

A look at how the C-47 evolved from passenger plane to a transport aircraft and flying hospital in WWII and years later as a gunship in Vietnam.

Allies slug it out on the island of Peleliu in a campaign to pave the way for Gen. MacArthur's return to the Philippines; footage shows troops enduring the muddy muck in the Philippines; Japan unveils a devastating new tactic, the kamikaze.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

A look at how the C-47 evolved from passenger plane to a transport aircraft and flying hospital in WWII and years later as a gunship in Vietnam.

Allies slug it out on the island of Peleliu in a campaign to pave the way for Gen. MacArthur's return to the Philippines; footage shows troops enduring the muddy muck in the Philippines; Japan unveils a devastating new tactic, the kamikaze.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

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

It is 1943, and the Allies launch a campaign to liberate Italy from the occupying Nazi forces; Military experts use the latest drone imaging technology to understand how the Nazis used the Italian landscape to their advantage.

Between 1940 and 1942, the Axis powers unleash over 3,000 bombing raids on Malta, an island key to controlling the southern coast of the Mediterranean; Conflict archeologists use cutting-edge drone technology to explore the defenses of Malta.

More than 75 years since the historic Allied invasion; Conflict archeologists uncover hidden evidence on and off the shores of Normandy, thanks to drone technology; One team examines the site of a British commando raid that liberated Port-en-Bessin.

Allied and Axis forces push science and engineering to the limits to gain the upper hand; Aerial drone footage and Lidar technology uncover evidence of military aviation innovations that played roles in key conflicts of the European campaign.

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

Paid programming.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

The German U-boat hunters become the hunted as advances in technology turn the tide in the Allies' favor.

German U-boats roam the seas in packs, threatening to starve Britain into submission during World War II.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

The German U-boat hunters become the hunted as advances in technology turn the tide in the Allies' favor.

An elite squad of Norwegians destroy a power plant in 1943 that the Nazis may have been using for nuclear weapons research.

The Germans begin a retreat on the eve of the polar winter; the Soviet Union begins a major offensive in the north; the Finns push the Germans towards their defensive line.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

Blinded in one eye in the battle for Normandy, a defiant French-Canadian sniper sets out to liberate a Dutch city in the final days of the war.

A high-profile murder case in Brazil during the 1970s captures the world's attention and leads to a national scandal.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

Blinded in one eye in the battle for Normandy, a defiant French-Canadian sniper sets out to liberate a Dutch city in the final days of the war.

A high-profile murder case in Brazil during the 1970s captures the world's attention and leads to a national scandal.

Blinded in one eye in the battle for Normandy, a defiant French-Canadian sniper sets out to liberate a Dutch city in the final days of the war.

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

A high-profile murder case in Brazil during the 1970s captures the world's attention and leads to a national scandal.

Blinded in one eye in the battle for Normandy, a defiant French-Canadian sniper sets out to liberate a Dutch city in the final days of the war.

During the night, the Champlain Towers South condo in Surfside, Miami, collapsed, killing 98 people; revealing fatal mistakes that led to the disaster, including code violations, inadequate storm defenses, ignored warnings and a contaminant.

Modern history's worst disasters are revisited and analyzed to identify ten key errors that led to each one.

Iranian students invade the U.S. Embassy in Tehran, taking 66 Americans hostage and triggering a crisis that will last 444 days; 10 key mistakes the United States made, including an ignorance of anti-U.S. sentiment and multiple security errors.

In-depth analysis of the 2013 Boston Marathon bombing reveals ten key failures and errors that took place during and after the terrorist attack.

On May 18, 1980, Washington state's Mount St. Helens erupts; revisiting the destructive volcanic event and revealing ten failures that escalated the catastrophe, including ignored warnings, inadequate safety zones and poor rescue planning.

Lunar and solar eclipses.

Paid programming.

For centuries, Mexico's historic center has been a land of legends and power. From Veracruz's shores to Mexico City's ancient layers, Puebla's epic battle and Michoacan's indigenous traditions, discover where empires rise and tr.

Discover shocking truths about religious rituals, sacred symbols, and spiritual traditions. Learn the brutal truth about execution rites in Roman England, look at shark bones in a Peruvian temple, and unearth a secret silver amulet in Germany.

Uncover how a royal imprisoned two princes and took the British throne. Ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Over three millennia, more than 340 pharaohs succeeded one another to make Ancient Egypt one of the world's most captivating civilizations; thanks to the latest discoveries by specialists, a look at the story of Egypt's greatest pharaohs.

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

The discovery of an underground haven used by World War I soldiers.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

Mike Davidson embarks with the team to one of the most extreme, avalanche-prone ski mountains in the world: Snowbird; they battle to keep the steep and deep slopes safe with shovels, snowcats and even a WWII Howitzer.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

Mike Davidson embarks with the team to one of the most extreme, avalanche-prone ski mountains in the world: Snowbird; they battle to keep the steep and deep slopes safe with shovels, snowcats and even a WWII Howitzer.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.

Mike Davidson embarks with the team to one of the most extreme, avalanche-prone ski mountains in the world: Snowbird; they battle to keep the steep and deep slopes safe with shovels, snowcats and even a WWII Howitzer.

Exploring behind-the-scenes of design and construction of revolutionary buildings in Spain, New York and a university campus in Florida.

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

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

Following marine salvage teams as they race against the clock to recover ships wrecked by fierce storms that rage across the globe.

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

Exploring the solar system through the eyes of intrepid machines.

The heroes and the effects of The War of 1812.

Following marine salvage teams as they race against the clock to recover ships wrecked by fierce storms that rage across the globe.

"America's Hidden Stories" delves into the secrets of America and the stories the viewers need to know. Discover if Revolutionary War hero Gen. Pulaski was actually a woman and was the heartland of the America's the birthplace of the Spanish flu? Modern historians use state-of-the-art equipment and technology along with newly discovered evidence to rewrite the narrative of some of the United States' most iconic stories. Sift beneath the surface as teams dig deep into America's past to uncover truths about the Salem witches and the trials, an alleged spy network behind Pearl Harbor and many other hidden gems.

Never before seen archive footage of WW2 which has been colorized for the first time.

"Air Warrriors" puts the spotlight on some of the airplanes that have been used by American forces in combat battles through the years. The program profiles the dedicated pilots and other team members who fly and maintain the aircraft. Rarely seen combat footage and pilots' stories help bring to life the journeys that have been taken by the flying machines, which include a plane-chopper hybrid that saves lives and an attack helicopter that is called the Black Death by America's enemies.

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

A look at how the post-war period and the Cold War unfolded high up in the North; recently published archival material helps to shed light on post-war events in the Arctic.

"America's Hidden Stories" delves into the secrets of America and the stories the viewers need to know. Discover if Revolutionary War hero Gen. Pulaski was actually a woman and was the heartland of the America's the birthplace of the Spanish flu? Modern historians use state-of-the-art equipment and technology along with newly discovered evidence to rewrite the narrative of some of the United States' most iconic stories. Sift beneath the surface as teams dig deep into America's past to uncover truths about the Salem witches and the trials, an alleged spy network behind Pearl Harbor and many other hidden gems.

An in-depth look at how things are repaired.

Exploring the engineering and architectural masterpieces like The Copper in Manhattan to Gardens By the Bay in Singapore.