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.

Exploring two extraordinary structures which have been transformed: an abandoned New York rail line repurposed into a scenic public park and a former church transformed into a community hub.

Journeying to the heart of Mongolia for a look at modern nomadic life, which hasn't changed much in 800 years; exploring artifacts and a 13th-century archery technique; how the murder of Genghis Khan's father set the wheels of history in motion.

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

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

After the landing on Normandy Beach, the Battle of Carentan breaks out and an American unit launches a desperate bayonet charge.

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.

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

After the landing on Normandy Beach, the Battle of Carentan breaks out and an American unit launches a desperate bayonet charge.

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.

In April 1945, the Yamato, the largest battleship in history, leaves for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrives at the Tsushima Strait.

On D-Day and later in June 1944, the USS Texas helps silence batteries of German artillery and gun positions defending the landing beaches and the port city of Cherbourg.

The crew of the USS George H.W. Bush aircraft carrier prepares to give air support to ground troops battling ISIS in Iraq.

A behind-the-scenes look at the operations of a U.S. Navy aircraft carrier; the dedicated sailors who keep it running at maximum efficiency.

From the USS Langley to the high-tech floating airports; the history of the aircraft carrier and how its air wing operates.

Exploring two extraordinary structures which have been transformed: an abandoned New York rail line repurposed into a scenic public park and a former church transformed into a community hub.

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

A look at disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

A long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood red lake on a remote Greek island, and an eerie pink glow emulating form the middle of the Pacific Ocean.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

A look at disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

A long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood red lake on a remote Greek island, and an eerie pink glow emulating form the middle of the Pacific Ocean.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

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.

A look at disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

A long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood red lake on a remote Greek island, and an eerie pink glow emulating form the middle of the Pacific Ocean.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

After months of fighting in Europe, U.S. troops finally enter Germany; with their sights set on the city of Aachen, the Americans must break through two rows of bunker fortifications to capture the old capital.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

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.

After months of fighting in Europe, U.S. troops finally enter Germany; with their sights set on the city of Aachen, the Americans must break through two rows of bunker fortifications to capture the old capital.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

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.

Windsor was the safe haven that kept Princess Elizabeth and her sister Margaret safe during the war, and it is where Elizabeth fell in love with Prince Philip.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

In the hunt for the origins of Neu Earth, the future historian investigates 21st-century eco-innovations; learning about cloud brightening to protect coral reefs, photosynthesis hacks for crops, insect protein, and waste-eating fungi.

Windsor was the safe haven that kept Princess Elizabeth and her sister Margaret safe during the war, and it is where Elizabeth fell in love with Prince Philip.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

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 long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood red lake on a remote Greek island, and an eerie pink glow emulating form the middle of the Pacific Ocean.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

Two crashed Cessnas baffle investigators.

The inside story of the Harrier, the world's most famous short takeoff and vertical landing fighter jet.

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

Two crashed Cessnas baffle investigators.

The inside story of the Harrier, the world's most famous short takeoff and vertical landing fighter jet.

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

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

Two crashed Cessnas baffle investigators.

The inside story of the Harrier, the world's most famous short takeoff and vertical landing fighter jet.

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

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

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

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.

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

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

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 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.

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

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.

Two crashed Cessnas baffle investigators.

Recently unearthed mummies may help solve the enduring mystery of why Pompeii was built on an active volcano; archaeologists explore the secrets of an ancient Roman town perfectly preserved after the devastating eruption of Mount Vesuvius.

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

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.

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

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

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.

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

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

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.

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.

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

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

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

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

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

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

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.

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.

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

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

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.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

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.

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

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

The airport has never shut down for bad weather, but a heavy storm, a rookie snow boss, and broken equipment put their remarkable streak in jeopardy; a 5.3 magnitude earthquake shakes the airport, grounding all planes.

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

The airport has never shut down for bad weather, but a heavy storm, a rookie snow boss, and broken equipment put their remarkable streak in jeopardy; a 5.3 magnitude earthquake shakes the airport, grounding all planes.

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

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.

The airport has never shut down for bad weather, but a heavy storm, a rookie snow boss, and broken equipment put their remarkable streak in jeopardy; a 5.3 magnitude earthquake shakes the airport, grounding all planes.

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

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

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.

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

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

Paid programming.

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.

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.

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

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

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.

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

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 disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

Journeying to the heart of Mongolia for a look at modern nomadic life, which hasn't changed much in 800 years; exploring artifacts and a 13th-century archery technique; how the murder of Genghis Khan's father set the wheels of history in motion.

Endless-stretches of white sandy beach and majestic mountains soaring high above verdant valleys.

A crisis in a remote Alaskan village, a grounded cargo 737 and alcohol smugglers keep the pilots and crews busy.

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

Endless-stretches of white sandy beach and majestic mountains soaring high above verdant valleys.

A crisis in a remote Alaskan village, a grounded cargo 737 and alcohol smugglers keep the pilots and crews busy.

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

The Great Depression dominates the decade; Franklin Roosevelt's Presidency; the White House fire of 1930; home movies filmed by Lou Hoover.

Endless-stretches of white sandy beach and majestic mountains soaring high above verdant valleys.

A crisis in a remote Alaskan village, a grounded cargo 737 and alcohol smugglers keep the pilots and crews busy.

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

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.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second largest city of Montreal.

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 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.

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

Paid programming.

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 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.

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

Examining 21st-century innovations that charted a new course for urbanites; peeking at cooling paint, nuclear fusion power, energy-generating floor tiles, innovative sponge, gardens and floating cities that can sustain their growing populations.

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.

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

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

A crisis in a remote Alaskan village, a grounded cargo 737 and alcohol smugglers keep the pilots and crews busy.

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

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

A live broadcast in recognition of the National Day for Truth and Reconciliation.

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

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.

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

America as the leader of the free world; Pearl Harbor; a new era of consumerism; the birth of suburbia.

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

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

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 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.

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.

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 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.

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.

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

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

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

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

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

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

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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.

From the silos of an old sugar refinery transformed into a bold new climbing complex, to a psychiatric hospital turned state-of-the-art gym, repurposed engineering has created a pair of sports-themed superstructures.

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

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

From the silos of an old sugar refinery transformed into a bold new climbing complex, to a psychiatric hospital turned state-of-the-art gym, repurposed engineering has created a pair of sports-themed superstructures.

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

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

Racial unrest divides the nation; Russia has a nuclear bomb; the Cold War; the brutal murder of 14-year-old black Chicagoan Emmett Till.

From the silos of an old sugar refinery transformed into a bold new climbing complex, to a psychiatric hospital turned state-of-the-art gym, repurposed engineering has created a pair of sports-themed superstructures.

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

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

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.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

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.

Examining the science behind the birth of the universe.

Paid programming.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

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.

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.

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

From artificial photosynthesis to vegan diets, changes in science and behavior are helping improve Earth's air quality.

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.

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

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

From the silos of an old sugar refinery transformed into a bold new climbing complex, to a psychiatric hospital turned state-of-the-art gym, repurposed engineering has created a pair of sports-themed superstructures.

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

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

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.

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

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

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.

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

Rare archival films, iconic news footage and home movies during a decade of revolution; the first televised Presidential debate.

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

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.

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

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.

Six of the country's top artists travel to Somerled Farm to create their own rendition of this quintessential Canadian view; contestants are given fours hours to create a landscape masterpiece.

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 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.

Six of the country's top artists travel to Somerled Farm to create their own rendition of this quintessential Canadian view; contestants are given fours hours to create a landscape masterpiece.

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.

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

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

An examination of humankind's impact on the Earth's surface and what alternatives are being explored to reverse the damages.

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

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

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

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.

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

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

The history of the KC-135 Stratotanker, the 60-year-old aerial refueler that keeps fighter jets flying.

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

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

The history of the KC-135 Stratotanker, the 60-year-old aerial refueler that keeps fighter jets flying.

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

New breakthroughs in science help to explain the origins of life and whether humans are alone in the universe.

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

The history of the KC-135 Stratotanker, the 60-year-old aerial refueler that keeps fighter jets flying.

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

A new batch of artists travel to Cobourg Marina to create a landscape masterpiece of this famous Canadian view, but a busy marina proves to be a challenging subject.

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

Historical and modern examinations of constellations.

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

A new batch of artists travel to Cobourg Marina to create a landscape masterpiece of this famous Canadian view, but a busy marina proves to be a challenging subject.

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

Historical and modern examinations of constellations.

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

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

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

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

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

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

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

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

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