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

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.

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

Two crashed Cessnas baffle investigators.

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

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.

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

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

Lunar and solar eclipses.

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.

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.

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

Lunar and solar eclipses.

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

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.

Crews work around the clock to build the world's largest underwater concrete bed to salvage the Costa Concordia; operating in secrecy, teams work under high security to repair one of the world's most iconic cruise liners.

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.

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.

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.

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.

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.

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

A wolverine overcomes first-time flyer's nerves to travel to a new home. A helicopter pilot hunts for a showstopping ice cave. An 80-year-old cargo plane flies into the Arctic, and a wall of arctic fog threatens the airport wit.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

A wolverine overcomes first-time flyer's nerves to travel to a new home. A helicopter pilot hunts for a showstopping ice cave. An 80-year-old cargo plane flies into the Arctic, and a wall of arctic fog threatens the airport wit.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

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

A wolverine overcomes first-time flyer's nerves to travel to a new home. A helicopter pilot hunts for a showstopping ice cave. An 80-year-old cargo plane flies into the Arctic, and a wall of arctic fog threatens the airport wit.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

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

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

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

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

An exploration of the astrophysics of stars creating matter.

Paid programming.

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

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

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

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.

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

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

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

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

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.

In Mexico's North, ancient runners defy impossible distances and living fossils reveal Earth's secrets; from Monterrey's industrial city to Guanajuato's revolutionary past, discover how mighty mountains forge unbreakable spirit.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

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

In Mexico's North, ancient runners defy impossible distances and living fossils reveal Earth's secrets; from Monterrey's industrial city to Guanajuato's revolutionary past, discover how mighty mountains forge unbreakable spirit.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

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

A mystery emerges after a single-engine floatplane crashes.

In Mexico's North, ancient runners defy impossible distances and living fossils reveal Earth's secrets; from Monterrey's industrial city to Guanajuato's revolutionary past, discover how mighty mountains forge unbreakable spirit.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

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

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

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

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

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

An exploration of the science behind the Anthropic Principle.

Paid programming.

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

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

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

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

An unprecedented consumer boom with children being marketed by television directly in their living rooms.

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

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

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

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

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

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.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

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

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

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

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

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

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

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

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

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

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

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

The creative revolution was born with new voices in advertising forcing integration and change during the civil rights movement.

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

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.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky. Two million packages go through here every day.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

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.

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

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

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.

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

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

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

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.

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

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

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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

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

Paid programming.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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

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

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

An examination of the Earth's freshwater supply and the ongoing challenge to maintain its quantity and quality as the planet's population soars.

The Regulation Revolution of the 1970s was a time when consumers got hip, government got involved, and advertisers got scared into action.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

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.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

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

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

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

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

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

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

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.

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

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

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

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

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

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

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

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

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

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

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

A look at artists in film, dance, and sculpture whose works are uniquely American, including ballerina Misty Copeland, actress Nicole Kidman, and more.

The 1980s were a time when greed was good, 24-hour sponsored programming was legal, and advertising became entertainment.

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

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

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

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

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.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

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

Examining the science behind the birth of the universe.

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

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

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

Examining the science behind the birth of the universe.

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

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

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

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

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.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators are characterized as charismatic, narcissistic and sadistic, but most of all by their thirst for power; once in power, holding on to it requires negotiation, coercion and force.

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

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.

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

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

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.

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

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.

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

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.

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

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

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

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

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

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

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

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

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

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

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

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

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

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.

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

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

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

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

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

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

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

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

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

Paid programming.

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

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.

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

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

Interviews with artists in film, theater, opera, and more who overcame poverty, physical disabilities, and trauma to achieve success, including Viola Davis.

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

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

The massive AC-130 provides unparalleled close air support to U.S. and allied ground troops.

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.

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

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

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

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

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.

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

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

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

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

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

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

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

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

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

A collection of artists who look to the Earth for inspiration, including a wildlife photographer, an orchestra that turns trash into musical instruments and more.

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.

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

The brief but historic service of the Grumman F6F Hellcat and its instrumental role in winning the Pacific War.

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.