An inside look at the P47 Thunderbolt and the critical role it played in both the European and Pacific Theaters of World War II.

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

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

An inside look at the P47 Thunderbolt and the critical role it played in both the European and Pacific Theaters of World War II.

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

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

Charles de Salaberry is forced to rely on cunning tactics.

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

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

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

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

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

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

In July of 1944, French resistance fighters called Maquisards declare a Free French Republic on the remote Vercors plateau in eastern France to support the Allied invasion of Normandy.

In August 1944, when Hitler launches Operation Lüttich to retake the port city of Avranches, German panzer and SS troops quickly overrun the French town of Mortain and encircle a battalion of US soldiers who hold the high ground on Hill 314.

In the autumn of 1944, Patton's Third Army approaches the heavily fortified region of Metz; after being turned back from Fort Driant, Patton's men target Fort Koenigsmacker a month later.

In July of 1944, French resistance fighters called Maquisards declare a Free French Republic on the remote Vercors plateau in eastern France to support the Allied invasion of Normandy.

In August 1944, when Hitler launches Operation Lüttich to retake the port city of Avranches, German panzer and SS troops quickly overrun the French town of Mortain and encircle a battalion of US soldiers who hold the high ground on Hill 314.

In the autumn of 1944, Patton's Third Army approaches the heavily fortified region of Metz; after being turned back from Fort Driant, Patton's men target Fort Koenigsmacker a month later.

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.

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

In July of 1944, French resistance fighters called Maquisards declare a Free French Republic on the remote Vercors plateau in eastern France to support the Allied invasion of Normandy.

In August 1944, when Hitler launches Operation Lüttich to retake the port city of Avranches, German panzer and SS troops quickly overrun the French town of Mortain and encircle a battalion of US soldiers who hold the high ground on Hill 314.

In the autumn of 1944, Patton's Third Army approaches the heavily fortified region of Metz; after being turned back from Fort Driant, Patton's men target Fort Koenigsmacker a month later.

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

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

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

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

The Sunshine coast features world famous mountain ranges, forest landscapes and iconic towns.

Exploring offshore islands, inland volcanoes and forgotten World War II defense fortifications north of Powell River.

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

John Norton leads Six Nations warriors against the invading Americans.

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

Paid programming.

Exploring offshore islands, inland volcanoes and forgotten World War II defense fortifications north of Powell River.

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

An inside look at the U.S. Air Force's largest aircraft, the C-5 Galaxy; its most dramatic combat and peacetime missions over the last 50 years.

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

In July of 1944, French resistance fighters called Maquisards declare a Free French Republic on the remote Vercors plateau in eastern France to support the Allied invasion of Normandy.

In August 1944, when Hitler launches Operation Lüttich to retake the port city of Avranches, German panzer and SS troops quickly overrun the French town of Mortain and encircle a battalion of US soldiers who hold the high ground on Hill 314.

In the autumn of 1944, Patton's Third Army approaches the heavily fortified region of Metz; after being turned back from Fort Driant, Patton's men target Fort Koenigsmacker a month later.

In July of 1944, French resistance fighters called Maquisards declare a Free French Republic on the remote Vercors plateau in eastern France to support the Allied invasion of Normandy.

In August 1944, when Hitler launches Operation Lüttich to retake the port city of Avranches, German panzer and SS troops quickly overrun the French town of Mortain and encircle a battalion of US soldiers who hold the high ground on Hill 314.

In the autumn of 1944, Patton's Third Army approaches the heavily fortified region of Metz; after being turned back from Fort Driant, Patton's men target Fort Koenigsmacker a month later.

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

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

Footage of life and death on the battlefield of El Alamein and behind the lines in the African desert.

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

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

Footage of life and death on the battlefield of El Alamein and behind the lines in the African desert.

An inside look at the U.S. Air Force's largest aircraft, the C-5 Galaxy; its most dramatic combat and peacetime missions over the last 50 years.

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

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

An inside look at the U.S. Air Force's largest aircraft, the C-5 Galaxy; its most dramatic combat and peacetime missions over the last 50 years.

BC's inland waterways.

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.

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

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

BC's inland waterways.

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.

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

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

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

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

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

Footage of life and death on the battlefield of El Alamein and behind the lines in the African desert.

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

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

Footage of life and death on the battlefield of El Alamein and behind the lines in the African desert.

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

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

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

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

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

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

An epic, high-altitude journey from Seven Sisters Provincial Park to Salmon Glacier.

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

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

The 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.

On a warm summer night in July 1988, the Piper Alpha oil rig in the middle of the North Sea was the scene of the world's deadliest offshore accident.

The story of the world's first nuclear bomber, the B-29, and its explosive impact on aerial warfare.

In February 1945, Allied forces lead an attack out of the Netherlands and onto German soil west of the Rhine; a Canadian battalion administrator must assume command of a company and lead it into battle.

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.

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.

A comprehensive look at the naval battle of Guadalcanal in November 1942 and the heroic efforts of U.S. sailors who held off powerful Imperial Navy.

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.

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.

A comprehensive look at the naval battle of Guadalcanal in November 1942 and the heroic efforts of U.S. sailors who held off powerful Imperial Navy.

The German flagship Cap Arcona served as the set for the 1942 Nazi propaganda feature film "Titanic"; her end would be equally tragic, with an even greater loss of life.

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.

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.

A comprehensive look at the naval battle of Guadalcanal in November 1942 and the heroic efforts of U.S. sailors who held off powerful Imperial Navy.

The creation legends of Naikoon Provincial Park; rich sea lion colonies; remote lighthouses.

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

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

The creation legends of Naikoon Provincial Park; rich sea lion colonies; remote lighthouses.

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 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 look at how acts of resistance and rebellion during slavery paved the way to abolition.

The journeys of two actors confronting their personal connection to slavery.

Witness little-known stories of the global slave trade involving an African musician, Thomas Jefferson, and more.

A look at racial injustices before and after slavery was abolished and the struggles that continue today.

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

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.

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.

A comprehensive look at the naval battle of Guadalcanal in November 1942 and the heroic efforts of U.S. sailors who held off powerful Imperial Navy.

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

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.

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

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.

Investigators try to determine what caused a routine commuter flight to crash.

A father and son team of bush aviators flies a NASA expedition into the wilderness. A rookie airline pilot attempts a landing on a remote island. A seaplane mechanic starts a helicopter repair business, and customs agents.

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.

A cultural and geological past told through the stunning landscape of Gwaii Haanas National Park Reserve.

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

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 cultural and geological past told through the stunning landscape of Gwaii Haanas National Park Reserve.

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

Paid programming.

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.

The most photographed woman in world from 1985 to 1997 suffered from hounding from paparazzi but also promoted the charitable and humanitarian causes she cared so passionately about.

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

An up-close look at NASA's decades-long mission to reach and explore Mars, including its latest rover, the high-tech Perseverance.

The most photographed woman in world from 1985 to 1997 suffered from hounding from paparazzi but also promoted the charitable and humanitarian causes she cared so passionately about.

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

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.

The most photographed woman in world from 1985 to 1997 suffered from hounding from paparazzi but also promoted the charitable and humanitarian causes she cared so passionately about.

Archaeologists use modern technology to determine if the reputation of China's only empress is based on fact.

A cross-country flight over the nation's mountains, beaches and national parks; visiting other sites that attract adventurers and tourists.

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.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into dark.

A cross-country flight over the nation's mountains, beaches and national parks; visiting other sites that attract adventurers and tourists.

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.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into dark.

Two crashed Cessnas baffle investigators.

A cross-country flight over the nation's mountains, beaches and national parks; visiting other sites that attract adventurers and tourists.

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.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into dark.

A wind farm depends on the all-terrain abilities of the Hagglund BV206 in Sweden.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

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

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

A wind farm depends on the all-terrain abilities of the Hagglund BV206 in Sweden.

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

Paid programming.

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

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

Jackie Kennedy's crucial role in the Kennedy years; Dolley Madison's role; Nancy Reagan's role as a First Lady.

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

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

Jackie Kennedy's crucial role in the Kennedy years; Dolley Madison's role; Nancy Reagan's role as a First Lady.

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

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

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.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into dark.

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.

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.

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.

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.

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

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.

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 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.

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

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

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

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.

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

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

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

Lady Bird Johnson, Edith Roosevelt and Betty Ford inherited the role of First Lady by chance during times when the nation was looking for stability.

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

A wind farm depends on the all-terrain abilities of the Hagglund BV206 in Sweden.

Lady Bird Johnson, Edith Roosevelt and Betty Ford inherited the role of First Lady by chance during times when the nation was looking for stability.

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.