The hunt for the missing flag draped over USA goalie after the hockey team won Olympic gold in 1980.

Rare archive footage charts the German Army in 1940 as it unleashes a new Blitzkrieg tactic.

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 how maritime task forces and the Coast Guard are keeping commercial vessels and US shores safe from pirates and drug smugglers.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

The Sea to Sky corridor reveals one of the west coast's most iconic landscapes.

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.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

The Sea to Sky corridor reveals one of the west coast's most iconic landscapes.

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.

Many experts believe King Arthur was a mythical figure; however, new evidence from ancient sites suggests that the Arthurian legend is rooted in fact, and it may finally answer the question of whether this storied king was real or myth.

New discoveries reveal caves and tunnels hidden beneath Mayan pyramids; archaeologists identify the location revered as the most sacred temple of all, the mystical center of the world, unlocking an incredible secret in the city of Chichen Itza.

In Spain, pilgrims walk the Camino de Santiago, ending with a visit to a shrine believed to hold the bones of Saint James the Great; new research suggests that the Camino may have been a sacred pathway long before the Christian age.

A team of archaeologists and scientists search Malta's sacred sites to explain why a flourishing ancient civilization vanished.

New evidence found in Egyptian sacred sites is revealing secrets about a forgotten succession of powerful female priests.

Rare archive footage charts the German Army in 1940 as it unleashes a new Blitzkrieg tactic.

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 how maritime task forces and the Coast Guard are keeping commercial vessels and US shores safe from pirates and drug smugglers.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

The hunt for the football involved in one of sports' greatest plays and a controversial championship ring.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

The best kept secrets of Nova Scotia.

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

Paid programming.

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.

The best kept secrets of Nova Scotia.

The Ahnenerbe, an elite SS division, sets out to prove that sacred sites from around the world were part of a superhuman Aryan master race.

Jeremy Birch takes on a salvage to raise a vessel with a concrete hull; it's been in the Fraser River for a month, collecting silt and mud, adding 30 tons to its deadweight.

An inside look at how Hampton Court's warders and staff open and close the palace to the public; a look at the marriage of Henry VIII and Jane Seymour.

The Ahnenerbe, an elite SS division, sets out to prove that sacred sites from around the world were part of a superhuman Aryan master race.

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.

An inside look at how Hampton Court's warders and staff open and close the palace to the public; a look at the marriage of Henry VIII and Jane Seymour.

Incredible treasures left behind by the raiders that were never found are examined, revealing the source of Han's wealth and power.

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.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

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.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

The search for Secretariat's missing Kentucky derby saddlecloth and Dale Earnhardt's first racecar.

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.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

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.

Nova Scotia's Southern coast.

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

Paid programming.

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.

Nova Scotia's Southern coast.

New discoveries reveal the astonishing role of women in the ancient world; from goddesses to matriarchies to witch trials.

Chris Ward sets out with Josh Moreira and Ward's younger brother to salvage a light aircraft that's sitting on the seabed; Jeremy Birch braves the arctic conditions to salvage two vessels that have fallen prey to the crushing ice conditions.

Exploring the palace's 60 acres of stunning gardens, its haunted corridor, and the doomed marriage of Henry VIII and Catherine Howard.

New discoveries reveal the astonishing role of women in the ancient world; from goddesses to matriarchies to witch trials.

By the spring of 1945, the United States begins to take back the Philippines; on Borneo, the Australians invade Labuan; when the United States invades Okinawa, Japan makes a strong stand and launches the biggest kamikaze attacks of the war.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

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.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

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 search for a World Series home run ball and a rare bat that may have been used by a baseball legend.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

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 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.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

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.

The Eastern Coastline is a living historical record of the battle between the French and English.

Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air.

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.

The Eastern Coastline is a living historical record of the battle between the French and English.

Catastrophes have destroyed civilisations in the past; from pandemics to climate collapse and asteroid crashes, ancient disasters reveal much about today's world.

Bundles of cedar wood tree trunks are smashed apart, releasing thousands of logs on the shoreline; Jeremy and his crew must work fast to recover the cargo.

Incredible treasures left behind by the raiders that were never found are examined, revealing the source of Han's wealth and power.

Catastrophes have destroyed civilisations in the past; from pandemics to climate collapse and asteroid crashes, ancient disasters reveal much about today's world.

President Harry Truman decides to drop the atomic bomb on Hiroshima and Nagasaki; Emperor Hirohito surrenders, and Gen. Douglas MacArthur arrives to oversee the country's occupation; mortal enemies must now become partners in Japan's rebirth.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Building an eco-friendly visitor centre in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

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.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

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.

The investigation of a missing basketball and a controversial Kentucky Derby trophy.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

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.

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

Dive into the historical and natural secrets of the deep; explore an uninhabited concrete island, ocean spirals off the Australian coast, underwater evidence of a violent past and tracks thousands of metres below the sea's surface.

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.

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

Paid programming.

Dive into the historical and natural secrets of the deep; explore an uninhabited concrete island, ocean spirals off the Australian coast, underwater evidence of a violent past and tracks thousands of metres below the sea's surface.

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

A journey along the geological marvel that is the Bay of Fundy coastline.

Egyptian archaeologists discover a vast burial chamber filled with over a hundred coffins.

Arctic conditions continue to wreak havoc in British Columbia; Jeremy Birch is called upon to raise a concrete-hulled vessel.

As the family made Windsor their home, Philip grew restless; Elizabeth assigned him as ranger of Windsor Great Park, but that only led to more problems.

Egyptian archaeologists discover a vast burial chamber filled with over a hundred coffins.

A look at life in the Pacific before, during, and after the attack on Pearl Harbor, presented through home movies and combat footage.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

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.

The crew faces the looming threat of icebergs and rough winds in a section of the ocean known as Iceberg Alley; their challenges are only made worse by their miserable living conditions, which provide little respite from the peril they face.

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 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.

The crew faces the looming threat of icebergs and rough winds in a section of the ocean known as Iceberg Alley; their challenges are only made worse by their miserable living conditions, which provide little respite from the peril they face.

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 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.

The search for a missing Olympic gold medal won by one of the greatest sports heroes in American history.

The crew faces the looming threat of icebergs and rough winds in a section of the ocean known as Iceberg Alley; their challenges are only made worse by their miserable living conditions, which provide little respite from the peril they face.

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 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.

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

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

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

Take a bird's-eye-view of Cape Breton Island; soar above from the Canso Causeway to the Cape Breton Highlands, and see the Cabot Trail.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

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

Take a bird's-eye-view of Cape Breton Island; soar above from the Canso Causeway to the Cape Breton Highlands, and see the Cabot Trail.

Archaeologists discover a mysterious 2600-year-old coffin with a remarkable secret.

Phil Risko's team at Northstar works fast to refloat a trawler that's been blown onto the shore of a national park in New Jersey; the team improvises to get it back to sea before it suffers further damage.

In 1972, the Queen celebrated her 25th wedding anniversary; she was photographed with the whole royal clan at Windsor, looking relaxed and happy; twenty years later, three of her four children were divorced and her beloved home had gone up in flames.

Archaeologists discover a mysterious 2600-year-old coffin with a remarkable secret.

Months after the Pearl Harbor attack, shock waves reverberate in every corner of the Pacific; Americans deploy to stem the enemy's advance; after culture clashes, Allied forces later bond over efforts to thwart Japan's move to control New Guinea.

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 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.

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.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

Uncover the sinister ways that dictators convince their followers to worship them as heroes; watch how they weave mythical narratives around their abilities, selling themselves as saviors who should hold absolute power over the people.

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.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

Uncover the sinister ways that dictators convince their followers to worship them as heroes; watch how they weave mythical narratives around their abilities, selling themselves as saviors who should hold absolute power over the people.

When a body is discovered in a bombed-out London church, investigators race to determine if it was caused by the Nazi Blitz or a local killer.

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.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

Uncover the sinister ways that dictators convince their followers to worship them as heroes; watch how they weave mythical narratives around their abilities, selling themselves as saviors who should hold absolute power over the people.

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.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

A journey along the geological marvel that is the Bay of Fundy coastline.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

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.

By the spring of 1945, the United States begins to take back the Philippines; on Borneo, the Australians invade Labuan; when the United States invades Okinawa, Japan makes a strong stand and launches the biggest kamikaze attacks of the war.

President Harry Truman decides to drop the atomic bomb on Hiroshima and Nagasaki; Emperor Hirohito surrenders, and Gen. Douglas MacArthur arrives to oversee the country's occupation; mortal enemies must now become partners in Japan's rebirth.

A look at life in the Pacific before, during, and after the attack on Pearl Harbor, presented through home movies and combat footage.

Months after the Pearl Harbor attack, shock waves reverberate in every corner of the Pacific; Americans deploy to stem the enemy's advance; after culture clashes, Allied forces later bond over efforts to thwart Japan's move to control New Guinea.

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.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

Tease out the common denominators that lead to tyranny; map the rise of some of the 20th century's dictators and discover how they seized power, exploited governing systems and gutted existing power structures to gain total control.

Cameras roll as Nazi Germany launches an all-out assault on the Soviet Union.

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.

[EPG Series] A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

Cameras roll as Nazi Germany launches an all-out assault on the Soviet Union.

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.

[EPG Series] A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

The story of "America's first serial killer," who stalked Chicago in the 1890's, and how the police departments of two major cities finally brought him to justice.

Cameras roll as Nazi Germany launches an all-out assault on the Soviet Union.

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.

[EPG Series] A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

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.

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.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

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.

Nova Scotia's Southern coast.

Zoom in on some otherworldly sights; spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn and take a spin around a doughnut-shaped lake in Saskatchewan.

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.

New discoveries reveal the astonishing role of women in the ancient world; from goddesses to matriarchies to witch trials.

Catastrophes have destroyed civilisations in the past; from pandemics to climate collapse and asteroid crashes, ancient disasters reveal much about today's world.

Egyptian archaeologists discover a vast burial chamber filled with over a hundred coffins.

Archaeologists discover a mysterious 2600-year-old coffin with a remarkable secret.

Cameras roll as Nazi Germany launches an all-out assault on the Soviet Union.

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.

[EPG Series] A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

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.

A new museum building bends 1,100-glass tubes to form a facade and tunnels below the water table. A vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

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.

A new museum building bends 1,100-glass tubes to form a facade and tunnels below the water table. A vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

When a woman is found dead in the cellar of an Edinburgh doctor in 1828, police uncover a murky world where murders are being committed for money.

Bush aviators push the limit of their plane to deliver a two-ton generator. In Fairbanks, slippery runways threaten The Internation Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 undercovers a poten.

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.

A new museum building bends 1,100-glass tubes to form a facade and tunnels below the water table. A vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

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.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

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.

Northumberland Strait.

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

Paid programming.

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.

Northumberland Strait.

Archaeologists in Saqqara discover an unfinished tomb dating to Egypt's Old Kingdom and uncover 4,000-year-old secrets about the family it was built for.

At the mouth of the Suez Canal, Lino Arosemena and his crew have a monster repair job of removing and refitting a 20-ton propeller.

Actress Meghan Markle's upcoming marriage to Prince Harry is compared to the stories of other American actresses and heiresses who crossed the Atlantic to marry into nobility, such as Grace Kelly and Rita Hayworth.

Archaeologists in Saqqara discover an unfinished tomb dating to Egypt's Old Kingdom and uncover 4,000-year-old secrets about the family it was built for.

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.

Actress Meghan Markle's upcoming marriage to Prince Harry is compared to the stories of other American actresses and heiresses who crossed the Atlantic to marry into nobility, such as Grace Kelly and Rita Hayworth.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

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 first fly-by-wire helicopter is put through its paces, as test pilots harness freezing temperatures. In Anchorage, a jet is lifted for repairs. In Talkeetna, pilots fight ice to deliver supplies to a homesteader's cabin in a.

In the wilds of Southern Africa, aviation takes over where roads don't go. Extreme Airport Africa brings you into the world of high-octane, high-risk bush flying where pilots brave rough runways, wild fires and wild animals.

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 first fly-by-wire helicopter is put through its paces, as test pilots harness freezing temperatures. In Anchorage, a jet is lifted for repairs. In Talkeetna, pilots fight ice to deliver supplies to a homesteader's cabin in a.

In the wilds of Southern Africa, aviation takes over where roads don't go. Extreme Airport Africa brings you into the world of high-octane, high-risk bush flying where pilots brave rough runways, wild fires and wild animals.

While Nazi Germany attempts to cover up the brutal murders of a serial killer, a brilliant detective uses early forensic methods to bring him to justice.

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 first fly-by-wire helicopter is put through its paces, as test pilots harness freezing temperatures. In Anchorage, a jet is lifted for repairs. In Talkeetna, pilots fight ice to deliver supplies to a homesteader's cabin in a.

In the wilds of Southern Africa, aviation takes over where roads don't go. Extreme Airport Africa brings you into the world of high-octane, high-risk bush flying where pilots brave rough runways, wild fires and wild animals.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

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.

The loyalist city of Saint John and international borders beyond, one of the worlds most famous waterways.

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

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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.

The loyalist city of Saint John and international borders beyond, one of the worlds most famous waterways.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

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.

Three Hollywood actresses become real-life princesses: Grace Kelly, Gloria Swanson and Rita Hayworth.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

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.