Board a rookie pilot's first flight with a planeload of passengers, then go to war with feathered invaders on the runway; wing between Johannesburg skyscrapers in a heavy-lift helicopter and save endangered rhinos with Africa's top bush aviators.

A damaged plane plunges Anchorage Airport into an emergency; a leak on a Coast Guard helicopter jeopardizes emergency cover; rain turns the Fairbanks runways into ice rinks and a dog-sled racing prodigy flies with furry teammates.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings.

Exhume chilling insights into ancient rituals, legendary warriors, and brutal deaths; investigate dozens of children's skeletons in Peru, find out if Amazon warriors once lived in Russia, and see what a UK cave full of butchered remains reveals.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings.

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

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

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

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

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

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

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

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Board a rookie pilot's first flight with a planeload of passengers, then go to war with feathered invaders on the runway; wing between Johannesburg skyscrapers in a heavy-lift helicopter and save endangered rhinos with Africa's top bush aviators.

A damaged plane plunges Anchorage Airport into an emergency; a leak on a Coast Guard helicopter jeopardizes emergency cover; rain turns the Fairbanks runways into ice rinks and a dog-sled racing prodigy flies with furry teammates.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

Board a rookie pilot's first flight with a planeload of passengers, then go to war with feathered invaders on the runway; wing between Johannesburg skyscrapers in a heavy-lift helicopter and save endangered rhinos with Africa's top bush aviators.

A damaged plane plunges Anchorage Airport into an emergency; a leak on a Coast Guard helicopter jeopardizes emergency cover; rain turns the Fairbanks runways into ice rinks and a dog-sled racing prodigy flies with furry teammates.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

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.

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.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

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.

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.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

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

Dictators may appear omnipotent, but their position depends largely on a network of individuals who benefit from their rule, and their support does not come cheap.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Visiting the heart of history in the Dahshur necropolis, where the first of the great pyramids was built; examining what a mini-scanner called a LiDAR reveals about this landmark's enduring mysteries.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Visiting the heart of history in the Dahshur necropolis, where the first of the great pyramids was built; examining what a mini-scanner called a LiDAR reveals about this landmark's enduring mysteries.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

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.

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

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.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

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

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

Paid programming.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

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

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.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Visiting the heart of history in the Dahshur necropolis, where the first of the great pyramids was built; examining what a mini-scanner called a LiDAR reveals about this landmark's enduring mysteries.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Visiting the heart of history in the Dahshur necropolis, where the first of the great pyramids was built; examining what a mini-scanner called a LiDAR reveals about this landmark's enduring mysteries.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

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.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

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

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

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 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.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

Challenge long-held beliefs about Viking leadership, weaponry, and brutality; inspect a warriors tomb full of clues in Sweden, a sword of unparalleled quality in Norway, and a pile of headless skeletons in the UK that reveal unimaginable violence.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

As German resources began to run thin as the War progressed, Hitler and Goebbels promoted Wonder Weapons as a way to pave a new path towards victory.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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

As German resources began to run thin as the War progressed, Hitler and Goebbels promoted Wonder Weapons as a way to pave a new path towards victory.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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

As German resources began to run thin as the War progressed, Hitler and Goebbels promoted Wonder Weapons as a way to pave a new path towards victory.

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.

As German resources began to run thin as the War progressed, Hitler and Goebbels promoted Wonder Weapons as a way to pave a new path towards victory.

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 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.

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 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.

Examining Landsat 8, the advanced planetary explorer with a 900 million dollar price tag, which is designed to reveal complex and ever-changing details undetectable by the human eye.

Paid programming.

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

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.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

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.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

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.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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

Witness the devastating impact of the German blitzkrieg as new tank strategies take the world by storm. Learn how Germany overcame the inferiority of its panzers and swept through Poland and France with innovations in logistics and strategy.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

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.

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.

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.

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.

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

Paid programming.

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.

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

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.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

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.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

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.

Mike joins the Assault Craft Unit 5, the U.S. Navy's team for Landing Craft Air Cushions (LCACs); LCACs carry heavy vehicles and troops onto beaches; Mike helps fly & fix an overhauled LCAC during a U.S. Marines beach assault training mission.

A mission to haul hefty cargo across Switzerland to the Netherlands, going through four countries with critical repairs at every turn.

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.

Mike joins the Assault Craft Unit 5, the U.S. Navy's team for Landing Craft Air Cushions (LCACs); LCACs carry heavy vehicles and troops onto beaches; Mike helps fly & fix an overhauled LCAC during a U.S. Marines beach assault training mission.

A mission to haul hefty cargo across Switzerland to the Netherlands, going through four countries with critical repairs at every turn.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

Examine how German soldiers used an erotic painting and other decoys to distract their captors as they tunnelled out of Island Farm POW camp in Wales; see how American bombardiers were smuggled out of Russia, and study a wartime Trojan Horse plot.

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.

When an infant is discovered dead in the River Thames, police uncover a dark underworld, where society's most vulnerable are being exploited.

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.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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

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.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Examine a unique silver scroll found in a collapsed Umayyad-period house in Jerash, Jordan; watch an advanced CT scanner penetrate its lead casing, revealing mysterious grooves and an enigmatic message that suggests it may be a protective amulet.

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.

Mike joins the Assault Craft Unit 5, the U.S. Navy's team for Landing Craft Air Cushions (LCACs); LCACs carry heavy vehicles and troops onto beaches; Mike helps fly & fix an overhauled LCAC during a U.S. Marines beach assault training mission.

A mission to haul hefty cargo across Switzerland to the Netherlands, going through four countries with critical repairs at every turn.

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.

Mike joins the Assault Craft Unit 5, the U.S. Navy's team for Landing Craft Air Cushions (LCACs); LCACs carry heavy vehicles and troops onto beaches; Mike helps fly & fix an overhauled LCAC during a U.S. Marines beach assault training mission.

A mission to haul hefty cargo across Switzerland to the Netherlands, going through four countries with critical repairs at every turn.

A mysterious engine fault delays a new airliner; scientists fly into the bush to hunt a killer disease; a broken-down plane closes a major runway, and a snake hunt across the airport ends in a face-off with a spitting cobra.

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.

Viewing Northern Italy from the air; the fashion capital of Milan; the canals of Venice; the peaks of the Dolomites; the colorful coast of Cinque Terre.

A mysterious engine fault delays a new airliner; scientists fly into the bush to hunt a killer disease; a broken-down plane closes a major runway, and a snake hunt across the airport ends in a face-off with a spitting cobra.

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.

Viewing Northern Italy from the air; the fashion capital of Milan; the canals of Venice; the peaks of the Dolomites; the colorful coast of Cinque Terre.

A mysterious engine fault delays a new airliner; scientists fly into the bush to hunt a killer disease; a broken-down plane closes a major runway, and a snake hunt across the airport ends in a face-off with a spitting cobra.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Examine a unique silver scroll found in a collapsed Umayyad-period house in Jerash, Jordan; watch an advanced CT scanner penetrate its lead casing, revealing mysterious grooves and an enigmatic message that suggests it may be a protective amulet.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

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.

Examine mysterious holes in Israel; 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.

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.

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.

Examine mysterious holes in Israel; 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.

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.

Deploy futuristic lidar technology to map the Amber Road, an ancient trade network linking the Baltic Sea to the Mediterranean. Follow researchers as they retrace the route and reshape our understanding of historical trade and cultural exchange.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

A mysterious engine fault delays a new airliner; scientists fly into the bush to hunt a killer disease; a broken-down plane closes a major runway, and a snake hunt across the airport ends in a face-off with a spitting cobra.

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.

Viewing Northern Italy from the air; the fashion capital of Milan; the canals of Venice; the peaks of the Dolomites; the colorful coast of Cinque Terre.

A mysterious engine fault delays a new airliner; scientists fly into the bush to hunt a killer disease; a broken-down plane closes a major runway, and a snake hunt across the airport ends in a face-off with a spitting cobra.

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.

Viewing Northern Italy from the air; the fashion capital of Milan; the canals of Venice; the peaks of the Dolomites; the colorful coast of Cinque Terre.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

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.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

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.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

Deploy futuristic lidar technology to map the Amber Road, an ancient trade network linking the Baltic Sea to the Mediterranean. Follow researchers as they retrace the route and reshape our understanding of historical trade and cultural exchange.

Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

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.

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.

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

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.

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.

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

Dig into a groundbreaking medieval silver mine revealed by a German sinkhole.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

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.

Look back at the wartime manufacturing boom, when countries across the world leveraged their industrial might to churn out the perfect tank. Marvel at the most iconic models, including the Soviet T-34, American M4 Sherman, and German Tiger I.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

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.

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 are revealed.

Takes an unprecedented look inside the secret chambers of the Great Pyramid of Giza, the only one of the Seven Wonders of the Ancient World still standing, and see what they reveal about the pyramid's origins.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

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 are revealed.

Takes an unprecedented look inside the secret chambers of the Great Pyramid of Giza, the only one of the Seven Wonders of the Ancient World still standing, and see what they reveal about the pyramid's origins.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

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 are revealed.

Dig into a groundbreaking medieval silver mine revealed by a German sinkhole.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

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.

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.

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.

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

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

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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.

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

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 are revealed.

Takes an unprecedented look inside the secret chambers of the Great Pyramid of Giza, the only one of the Seven Wonders of the Ancient World still standing, and see what they reveal about the pyramid's origins.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

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 are revealed.

Takes an unprecedented look inside the secret chambers of the Great Pyramid of Giza, the only one of the Seven Wonders of the Ancient World still standing, and see what they reveal about the pyramid's origins.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.