Archaeologists discover a link between the prophecies of the oracles and seismic activity beneath Earth's surface.

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.

Host Mike Davidson goes to the remote Atacama desert in Chile; at observatory ALMA he works alongside the expert team as they repair some of the world's biggest antennas.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Looking at the engineering genius that's taken repurposing underground, from a rotting shipyard transformed into a subterranean museum to a rusting bank vault that serves cocktails.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

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

Looking at the engineering genius that's taken repurposing underground, from a rotting shipyard transformed into a subterranean museum to a rusting bank vault that serves cocktails.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

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

A mystery emerges after a single-engine floatplane crashes.

Looking at the engineering genius that's taken repurposing underground, from a rotting shipyard transformed into a subterranean museum to a rusting bank vault that serves cocktails.

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

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

Crawling down the Red River, the Amphibex protects those who live along it during the thaw, while the Hercules C-130 J takes to the Arctic skies of the Canadian North; preparing for summer exploratory missions is Swedish built icebreaker Oden.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

Using computer simulations, it is possible to fly over other worlds and see how galaxies interact.

The second largest planet is also a mini-solar system with 60 moons and those crazy rings.

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

Paid programming.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicoloured pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

Using computer simulations, it is possible to fly over other worlds and see how galaxies interact.

The second largest planet is also a mini-solar system with 60 moons and those crazy rings.

Mary Lincoln, Eleanor Roosevelt and Laura Bush's role as First Ladies in calming the nation in times of war.

A 4,000-year-old leather manuscript at the Cairo Museum sheds new light on The Book of the Dead from ancient Egypt.

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

Mary Lincoln, Eleanor Roosevelt and Laura Bush's role as First Ladies in calming the nation in times of war.

A 4,000-year-old leather manuscript at the Cairo Museum sheds new light on The Book of the Dead from ancient Egypt.

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.

Looking at the engineering genius that's taken repurposing underground, from a rotting shipyard transformed into a subterranean museum to a rusting bank vault that serves cocktails.

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

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

A trip goes wrong when a pilot's Piper Super Cub crashes into a treacherous waterway.

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

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

Incredible rock formations, peat farms and some of the East Coast's impressive sand dunes.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

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

Incredible rock formations, peat farms and some of the East Coast's impressive sand dunes.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

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

Evidence of ritual murder, human sacrifice and cannibalism in the desert valley of Chaco Canyon, New Mexico.

Exploring machines invented for human survival in the extreme cold across the planet.

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

Evidence of ritual murder, human sacrifice and cannibalism in the desert valley of Chaco Canyon, New Mexico.

Investigate the costs of Hitler's Soviet invasion, which aims to give the Nazis control over a key nickel mine and a transportation hub; seeing how this summer battle turns into a bitter winter war as the Allies tighten their grip on the Arctic.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

At midnight on July 30, 1945, the USS Indianapolis was sailing west on the Pacific toward the Philippines with 1,197 men on board when it was hit with two Japanese torpedoes.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

When his company attempts to capture a small village, an American soldier, born in Mexico but raised in Texas, must crawl through an enemy minefield to capture two German machine gun nests holding up his unit.

At midnight on July 30, 1945, the USS Indianapolis was sailing west on the Pacific toward the Philippines with 1,197 men on board when it was hit with two Japanese torpedoes.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

When his company attempts to capture a small village, an American soldier, born in Mexico but raised in Texas, must crawl through an enemy minefield to capture two German machine gun nests holding up his unit.

Evidence is lost to a fire after a Cessna crash on a public road, challenging investigators.

At midnight on July 30, 1945, the USS Indianapolis was sailing west on the Pacific toward the Philippines with 1,197 men on board when it was hit with two Japanese torpedoes.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

When his company attempts to capture a small village, an American soldier, born in Mexico but raised in Texas, must crawl through an enemy minefield to capture two German machine gun nests holding up his unit.

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

The Magdalen Islands.

Scientists are now probing to detect gravity waves in space and mapping the gravity patterns of the moon for the first time.

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

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

The Magdalen Islands.

Scientists are now probing to detect gravity waves in space and mapping the gravity patterns of the moon for the first time.

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

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.

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.

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.

Investigate the costs of Hitler's Soviet invasion, which aims to give the Nazis control over a key nickel mine and a transportation hub; seeing how this summer battle turns into a bitter winter war as the Allies tighten their grip on the Arctic.

At midnight on July 30, 1945, the USS Indianapolis was sailing west on the Pacific toward the Philippines with 1,197 men on board when it was hit with two Japanese torpedoes.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

An American 2nd lieutenant sends his company back during an enemy counterattack during the Allied bid to clear the Colmar Pocket; he tries to hold off the German soldiers with his carbine rifle and calling in artillery but runs out of bullets.

Military experts and historians crisscross Europe to revisit the war's most iconic sites to uncover untold stories and long-forgotten secrets.

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

A look at how technological advances over the centuries have transformed maritime warfare.

Military experts and historians crisscross Europe to revisit the war's most iconic sites to uncover untold stories and long-forgotten secrets.

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

A look at how technological advances over the centuries have transformed maritime warfare.

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.

Military experts and historians crisscross Europe to revisit the war's most iconic sites to uncover untold stories and long-forgotten secrets.

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

A look at how technological advances over the centuries have transformed maritime warfare.

The west coast of Newfoundland is a story of cultural history and natural beauty, from the first European settlements at historic Port au Choix, to the incredible, scenery of Gros Morne National Park.

St. John's Newfoundland and the Avalon peninsula to the unique islands.

The vast majority of information being gathered about Mars is by orbiters chronicling everything they can.

Exploring the Milky Way from the mythology of ancient sky watchers to how scientists are mapping it from the inside out.

The west coast of Newfoundland is a story of cultural history and natural beauty, from the first European settlements at historic Port au Choix, to the incredible, scenery of Gros Morne National Park.

St. John's Newfoundland and the Avalon peninsula to the unique islands.

The vast majority of information being gathered about Mars is by orbiters chronicling everything they can.

Exploring the Milky Way from the mythology of ancient sky watchers to how scientists are mapping it from the inside out.

In Jordan and Saudi Arabia, two cities, Petra and Hegra, are thought to have been centers of a "lost matriarchy.".

After the king of France targets the Knights Templar, they face imprisonment, torture and executions, but their legacy endures through present day.

Archaeologists discover a link between the prophecies of the oracles and seismic activity beneath Earth's surface.

A 4,000-year-old leather manuscript at the Cairo Museum sheds new light on The Book of the Dead from ancient Egypt.

Evidence of ritual murder, human sacrifice and cannibalism in the desert valley of Chaco Canyon, New Mexico.

Military experts and historians crisscross Europe to revisit the war's most iconic sites to uncover untold stories and long-forgotten secrets.

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

A look at how technological advances over the centuries have transformed maritime warfare.

Valentine's day delays loom when a squadron of F22 makes an unexpected landing; high winds threaten a helicopter's 600lb sling load; Aviators come to the rescue of a village without water.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

Valentine's day delays loom when a squadron of F22 makes an unexpected landing; high winds threaten a helicopter's 600lb sling load; Aviators come to the rescue of a village without water.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

A remote island linked to one of the world's most famous aviation mysteries; thousands of shipwrecks in the Bermuda triangle; a history lost and found in the South Pacific; a 10,000-year-old mystery in the murky depths of the Yucatan Peninsula.

Valentine's day delays loom when a squadron of F22 makes an unexpected landing; high winds threaten a helicopter's 600lb sling load; Aviators come to the rescue of a village without water.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

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.

From St. John's heading north, the coastline is a maze of bays and inlets.

Examining the science behind the birth of the universe.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

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.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

Paid programming.

Examining the science behind the birth of the universe.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

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

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.

Crawling down the Red River, the Amphibex protects those who live along it during the thaw, while the Hercules C-130 J takes to the Arctic skies of the Canadian North; preparing for summer exploratory missions is Swedish built icebreaker Oden.

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

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.

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

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

The dramatic history of Princess Fu Hao, who rose from the leader of a warrior clan, to then become a key advisor, general and wife of King Wu Ding of the Shang Dynasty.

There is no better way to witness Argentina, and its land of contrasts, than to experience it by air; this soaring tour stretches from one extreme to the next, from vast wetlands to some of the driest places on Earth.

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.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

There is no better way to witness Argentina, and its land of contrasts, than to experience it by air; this soaring tour stretches from one extreme to the next, from vast wetlands to some of the driest places on Earth.

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.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

There is no better way to witness Argentina, and its land of contrasts, than to experience it by air; this soaring tour stretches from one extreme to the next, from vast wetlands to some of the driest places on Earth.

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.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

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.

From the waters of Juan de Fuca Strait to Gulf Islands National Park Reserve.

Examining how cosmic rays are produced and what that can tell us about the universe.

The Fermi Paradox asks why another civilization has not presented itself.

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.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

Paid programming.

Examining how cosmic rays are produced and what that can tell us about the universe.

The Fermi Paradox asks why another civilization has not presented itself.

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

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.

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

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

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.

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.

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.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

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.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

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.

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.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

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.

Revealing the truth behind the planet's ancient legends; touring an island covered in polar bears, twin craters in Greece, peeking at a supervolcano hidden under Yellowstone Park and examining an ocean formation that's eerily similar to Atlantis.

A rich mix of coastal towns, islands, inland mountains and seascapes from Nanaimo to Campbell River.

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.

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

Revealing the truth behind the planet's ancient legends; touring an island covered in polar bears, twin craters in Greece, peeking at a supervolcano hidden under Yellowstone Park and examining an ocean formation that's eerily similar to Atlantis.

A rich mix of coastal towns, islands, inland mountains and seascapes from Nanaimo to Campbell River.

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.

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

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.

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.

The Yeti is a custom-made snow-eater that keeps a critical Alaskan airport open for business; experts reveal how cutting-edge engineering and the latest technology keep this machine running in the toughest conditions.

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.

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.

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.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee. A decaying Amsterdam crane track transforms into elegant glass offices.

From a Boeing 747 transformed into a residential roof to a revolutionary sci-fi theatre made from a relic of the Industrial Revolution, looking at two showstopping structures that have pushed repurposing innovation to its absolute limits.

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

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

From a Boeing 747 transformed into a residential roof to a revolutionary sci-fi theatre made from a relic of the Industrial Revolution, looking at two showstopping structures that have pushed repurposing innovation to its absolute limits.

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

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

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.

From a Boeing 747 transformed into a residential roof to a revolutionary sci-fi theatre made from a relic of the Industrial Revolution, looking at two showstopping structures that have pushed repurposing innovation to its absolute limits.

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

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

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

From scenic Telegraph Cove, around Cape Scott Provincial Park, and beyond.

Historical and modern examinations of constellations.

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

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.

From scenic Telegraph Cove, around Cape Scott Provincial Park, and beyond.

Historical and modern examinations of constellations.

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

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

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

A helicopter made for extreme environments aids US Army rescue efforts in some of the most harsh conditions; a trio of small but capable tugboats moves cargo vessels through the busiest port of Alaska.

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

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

Sit down with civilians who got caught in the crossfire; learn how an 11-year-old Jewish boy hid from the Nazis; meet an unjustly imprisoned Japanese-American who served his country; relive a young woman's Blitz experience.

From a Boeing 747 transformed into a residential roof to a revolutionary sci-fi theatre made from a relic of the Industrial Revolution, looking at two showstopping structures that have pushed repurposing innovation to its absolute limits.

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

The Draken and its crew finally get sailing after a lengthy period of construction and refitting; they face rough weather off the Faroe Islands before making their way to Iceland and the landing site of Erik the Red.

The view from above reveals a derelict complex of pod-like structures with seemingly alien origins; a bewildering concrete construction in the mountains of Bosnia; a puzzling collection of out of place shapes discarded in the wilds of Greenland.

Palmyra: pearl of the Syrian desert; experts return to the site and use CGI reconstruction to reveal the secrets of Palmyra's ancient engineers.

The Draken and its crew finally get sailing after a lengthy period of construction and refitting; they face rough weather off the Faroe Islands before making their way to Iceland and the landing site of Erik the Red.

The view from above reveals a derelict complex of pod-like structures with seemingly alien origins; a bewildering concrete construction in the mountains of Bosnia; a puzzling collection of out of place shapes discarded in the wilds of Greenland.

Palmyra: pearl of the Syrian desert; experts return to the site and use CGI reconstruction to reveal the secrets of Palmyra's ancient engineers.

Revealing the truth behind the planet's ancient legends; touring an island covered in polar bears, twin craters in Greece, peeking at a supervolcano hidden under Yellowstone Park and examining an ocean formation that's eerily similar to Atlantis.

The Draken and its crew finally get sailing after a lengthy period of construction and refitting; they face rough weather off the Faroe Islands before making their way to Iceland and the landing site of Erik the Red.

The view from above reveals a derelict complex of pod-like structures with seemingly alien origins; a bewildering concrete construction in the mountains of Bosnia; a puzzling collection of out of place shapes discarded in the wilds of Greenland.

Palmyra: pearl of the Syrian desert; experts return to the site and use CGI reconstruction to reveal the secrets of Palmyra's ancient engineers.

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 collection of scenic towns, parks and coastal rainforest unique in the world.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

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 collection of scenic towns, parks and coastal rainforest unique in the world.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

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.

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

Salvaging a 50-foot motor yacht in Islamorda, Fla.; a 44-foot launch hung up on a dam on the Mississippi River; repairing a major storm gate in the British Isles.

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.

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

Uncover the luck and determination that helped POWs endure captivity, hunger, and acts of unthinkable brutality. Listen to the riveting stories of soldiers who survived infamous German stalags, Japanese forced-labour campaigns, and death marches.

The view from above reveals a derelict complex of pod-like structures with seemingly alien origins; a bewildering concrete construction in the mountains of Bosnia; a puzzling collection of out of place shapes discarded in the wilds of Greenland.

Palmyra: pearl of the Syrian desert; experts return to the site and use CGI reconstruction to reveal the secrets of Palmyra's ancient engineers.

On October 9, 1963, the Vajont Dam in northern Italy was the scene of incredible devastation.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.

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.

On October 9, 1963, the Vajont Dam in northern Italy was the scene of incredible devastation.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.

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.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

On October 9, 1963, the Vajont Dam in northern Italy was the scene of incredible devastation.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.

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.

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.

BC's lower mainland is a mix of remote mountain ranges, spectacular cityscapes and marine life.

An exploration of the science behind the Anthropic Principle.

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

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.

BC's lower mainland is a mix of remote mountain ranges, spectacular cityscapes and marine life.

An exploration of the science behind the Anthropic Principle.

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

The scale of World War II grows as the United States joins the war; explore the operations where Allied commando troops raid the Norwegian coast.

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.

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.

Sit down with civilians who got caught in the crossfire; learn how an 11-year-old Jewish boy hid from the Nazis; meet an unjustly imprisoned Japanese-American who served his country; relive a young woman's Blitz experience.

Uncover the luck and determination that helped POWs endure captivity, hunger, and acts of unthinkable brutality. Listen to the riveting stories of soldiers who survived infamous German stalags, Japanese forced-labour campaigns, and death marches.

On October 9, 1963, the Vajont Dam in northern Italy was the scene of incredible devastation.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.