Human remains are discovered near Croghan Hill, Ireland, a significant place for ancient kings; the investigation takes a turn when authorities realize the body is not a current missing person or murder victim.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Exploring the enduring bond between God and the Jewish people; tracing the roots of the religion from Abraham to today; exploring not only historical events, but also the rich cultural expressions of the Jewish faith.

Cuba's Fidel Castro leads a revolution against a U.S.-backed dictator; the U.S., fearing the spread of communism, authorizes the CIA to remove Castro through various covert operations; Castro remains in power, defying U.S. efforts for decades.

California is home to many sightings of unidentified flying objects; the state's size contributes to explained and unexplained sightings.

Jay finds a super rare game that he needs- but will he fork out the cash needed to get it?

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

Doris takes her daughter, Shetin, to Ghana to learn the truth behind her royal bloodline.

Galaxies form the grand structure of our cosmos, yet their origins remain a mystery; how did solitary stars evolve? Scientists trace the peculiar positions of ancient stars and search for supermassive black holes that roar to life at a galaxy's core.

Richmann's lightning experiment ends in tragedy, warning future physicists; Slotin's atomic research at the Manhattan Project also comes with fatal consequences; Rodney Marks studies star formations in Antarctica.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

In 1928, an earthquake shift uncovers a row of painted warriors -- seven-foot statues encasing mummies from an ancient civilization; curious bone arrangements in Winterborne are somehow linked to intermingled ashes from dig sites of Slovenia.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

Doris takes her daughter, Shetin, to Ghana to learn the truth behind her royal bloodline.

Galaxies form the grand structure of our cosmos, yet their origins remain a mystery; how did solitary stars evolve? Scientists trace the peculiar positions of ancient stars and search for supermassive black holes that roar to life at a galaxy's core.

Richmann's lightning experiment ends in tragedy, warning future physicists; Slotin's atomic research at the Manhattan Project also comes with fatal consequences; Rodney Marks studies star formations in Antarctica.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

In 1928, an earthquake shift uncovers a row of painted warriors -- seven-foot statues encasing mummies from an ancient civilization; curious bone arrangements in Winterborne are somehow linked to intermingled ashes from dig sites of Slovenia.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

Doris takes her daughter, Shetin, to Ghana to learn the truth behind her royal bloodline.

Richmann's lightning experiment ends in tragedy, warning future physicists; Slotin's atomic research at the Manhattan Project also comes with fatal consequences; Rodney Marks studies star formations in Antarctica.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

In 1928, an earthquake shift uncovers a row of painted warriors -- seven-foot statues encasing mummies from an ancient civilization; curious bone arrangements in Winterborne are somehow linked to intermingled ashes from dig sites of Slovenia.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

Richmann's lightning experiment ends in tragedy, warning future physicists; Slotin's atomic research at the Manhattan Project also comes with fatal consequences; Rodney Marks studies star formations in Antarctica.

Galaxies form the grand structure of our cosmos, yet their origins remain a mystery; how did solitary stars evolve? Scientists trace the peculiar positions of ancient stars and search for supermassive black holes that roar to life at a galaxy's core.

How the morning routine became routine.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

In 1928, an earthquake shift uncovers a row of painted warriors -- seven-foot statues encasing mummies from an ancient civilization; curious bone arrangements in Winterborne are somehow linked to intermingled ashes from dig sites of Slovenia.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

Doris takes her daughter, Shetin, to Ghana to learn the truth behind her royal bloodline.

In the early days of WWII, German radar stations and systems sprung up along coastlines, harnessing frequencies to help them plot their next move; to secure important weather data, the Nazis sent out ships and erected remote weather stations.

An ancient seabed returns to water as the mighty Red River spills its banks not once but twice in a century; Mount Vesuvius catches everyone off guard, devastating the city of Pompeii in A.D. 79 and erupting again in 1944.

In the heart of Los Angeles is a hotel with a sinister reputation; a mysterious mountain range tempts hungry prospectors with a rumoured cache of gold; in Bucharest, a ruthless leader pens a charter that promises eternal damnation to his enemies.

An unidentified metal object is found on Kiska Island; a centuries-old gold mining mystery is investigated; in Siberia, a network of ice tunnels is explored; fossils unearthed in the Canadian Arctic lead to the discovery of a new species.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Initially diagnosed with Carpal Tunnel Syndrome, Ted's pain spreads to his legs, leaving doctors baffled; Tammy's constipation and accelerated heart beat leads to a diagnosis of Lupus.

Ines travels back to Chile with her daughter Carolina to reflect on the different lives they live; Ines reveals the weight of her past so her daughter may understand the challenges she faced during times of a dictatorship.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

In the early days of WWII, German radar stations and systems sprung up along coastlines, harnessing frequencies to help them plot their next move; to secure important weather data, the Nazis sent out ships and erected remote weather stations.

An ancient seabed returns to water as the mighty Red River spills its banks not once but twice in a century; Mount Vesuvius catches everyone off guard, devastating the city of Pompeii in A.D. 79 and erupting again in 1944.

In the heart of Los Angeles is a hotel with a sinister reputation; a mysterious mountain range tempts hungry prospectors with a rumoured cache of gold; in Bucharest, a ruthless leader pens a charter that promises eternal damnation to his enemies.

An unidentified metal object is found on Kiska Island; a centuries-old gold mining mystery is investigated; in Siberia, a network of ice tunnels is explored; fossils unearthed in the Canadian Arctic lead to the discovery of a new species.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Initially diagnosed with Carpal Tunnel Syndrome, Ted's pain spreads to his legs, leaving doctors baffled; Tammy's constipation and accelerated heart beat leads to a diagnosis of Lupus.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

In the early days of WWII, German radar stations and systems sprung up along coastlines, harnessing frequencies to help them plot their next move; to secure important weather data, the Nazis sent out ships and erected remote weather stations.

Ines travels back to Chile with her daughter Carolina to reflect on the different lives they live; Ines reveals the weight of her past so her daughter may understand the challenges she faced during times of a dictatorship.

In the heart of Los Angeles is a hotel with a sinister reputation; a mysterious mountain range tempts hungry prospectors with a rumoured cache of gold; in Bucharest, a ruthless leader pens a charter that promises eternal damnation to his enemies.

Nearly 3.7 million people claim to have experienced something not of this Earth; most are dismissed, ignored or silenced, but they cannot all be wrong.

Initially diagnosed with Carpal Tunnel Syndrome, Ted's pain spreads to his legs, leaving doctors baffled; Tammy's constipation and accelerated heart beat leads to a diagnosis of Lupus.

An unidentified metal object is found on Kiska Island; a centuries-old gold mining mystery is investigated; in Siberia, a network of ice tunnels is explored; fossils unearthed in the Canadian Arctic lead to the discovery of a new species.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

Nearly 3.7 million people claim to have experienced something not of this Earth; most are dismissed, ignored or silenced, but they cannot all be wrong.

An ancient seabed returns to water as the mighty Red River spills its banks not once but twice in a century; Mount Vesuvius catches everyone off guard, devastating the city of Pompeii in A.D. 79 and erupting again in 1944.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

Initially diagnosed with Carpal Tunnel Syndrome, Ted's pain spreads to his legs, leaving doctors baffled; Tammy's constipation and accelerated heart beat leads to a diagnosis of Lupus.

An unidentified metal object is found on Kiska Island; a centuries-old gold mining mystery is investigated; in Siberia, a network of ice tunnels is explored; fossils unearthed in the Canadian Arctic lead to the discovery of a new species.

In the heart of Los Angeles is a hotel with a sinister reputation; a mysterious mountain range tempts hungry prospectors with a rumoured cache of gold; in Bucharest, a ruthless leader pens a charter that promises eternal damnation to his enemies.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

Knotting neckwear, strapping on wristwear and hitting the phone.

In the mountains of Northern Italy, a couple of mountaineers make a discovery; in a remote part of the world, human remains stick out from a glacier.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

After an eleven-year estrangement, Jordan and his father, Adonis, have recently reconnected; for the first time, they'll travel to Adonis' home country of Cuba for Jordan to discover their family's rich musical legacy.

The Curse of Tippecanoe casts its long and deadly gaze on the White House; whispers of buried treasure lure fortune seekers to the mist-shrouded shores of Oak Island; the smoke from a long-ago pyre carries a curse that transcends generations.

All aboard an exciting high-speed journey through time witnessing the birth and evolution of one of the most important forms of transportation ever invented, the train.

Knotting neckwear, strapping on wristwear and hitting the phone.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

In the mountains of Northern Italy, a couple of mountaineers make a discovery; in a remote part of the world, human remains stick out from a glacier.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

After an eleven-year estrangement, Jordan and his father, Adonis, have recently reconnected; for the first time, they'll travel to Adonis' home country of Cuba for Jordan to discover their family's rich musical legacy.

The Curse of Tippecanoe casts its long and deadly gaze on the White House; whispers of buried treasure lure fortune seekers to the mist-shrouded shores of Oak Island; the smoke from a long-ago pyre carries a curse that transcends generations.

All aboard an exciting high-speed journey through time witnessing the birth and evolution of one of the most important forms of transportation ever invented, the train.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

In the mountains of Northern Italy, a couple of mountaineers make a discovery; in a remote part of the world, human remains stick out from a glacier.

After an eleven-year estrangement, Jordan and his father, Adonis, have recently reconnected; for the first time, they'll travel to Adonis' home country of Cuba for Jordan to discover their family's rich musical legacy.

All aboard an exciting high-speed journey through time witnessing the birth and evolution of one of the most important forms of transportation ever invented, the train.

From Galileo to Einstein to Hubble, scientists have long grappled with the shape and scale of the Universe. As technology expands our view, missing space curvatures and inconsistent data related to Hubble's constant keeps us mystified.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

When militaries need support in the field, they call upon military machines designed for diverse purposes: from delivering supplies to the battlefield and defusing dangerous minefields, to recovering military vehicles and bridging harrowing gaps.

In the mountains of Northern Italy, a couple of mountaineers make a discovery; in a remote part of the world, human remains stick out from a glacier.

All aboard an exciting high-speed journey through time witnessing the birth and evolution of one of the most important forms of transportation ever invented, the train.

A woman is hit by a truck while crossing the street, plunging her into an outer body experience that profoundly changes her life. Then, a medical mishap causes a journey into a realm of light for a quadriplegic man.

Twenty years ago, Philippe left his homeland in the South of France; he and his daughter, Valentine, travel back to uncover the truth about their family and reconnect with the vibrant French culture.

From the Hindenburg disaster, to the Iceland Eruption, Chornobyl, the Dust Bowl Drought, and the Cascadia Earthquake; the science and engineering behind these events, and the lessons learned.

The Curse of Tippecanoe casts its long and deadly gaze on the White House; whispers of buried treasure lure fortune seekers to the mist-shrouded shores of Oak Island; the smoke from a long-ago pyre carries a curse that transcends generations.

From the face to the base and the people who make them, discussing pairs.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

Long before the declaration of war, the world wanted the Fuhrer dead; in Germany, fellow politicians lodge their dissent after the horrific Night of the Long Knives; among them, a plan starts to take shape.

Surrounded by an invisible sphere of infinite data, the understanding of the universe depends on signals that are sent and received; once in a while, a strange phenomenon occurs, such as a faulty message or a literal blip on a screen.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Millionaire Donald Bain loved his private hunting lodge on the shores of Lake Manitoba, so much so he'd greet strangers with a shotgun and turned away Hollywood royalty.

Exploring the enduring bond between God and the Jewish people; tracing the roots of the religion from Abraham to today; exploring not only historical events, but also the rich cultural expressions of the Jewish faith.

From Galileo to Einstein to Hubble, scientists have long grappled with the shape and scale of the Universe. As technology expands our view, missing space curvatures and inconsistent data related to Hubble's constant keeps us mystified.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

Long before the declaration of war, the world wanted the Fuhrer dead; in Germany, fellow politicians lodge their dissent after the horrific Night of the Long Knives; among them, a plan starts to take shape.

Surrounded by an invisible sphere of infinite data, the understanding of the universe depends on signals that are sent and received; once in a while, a strange phenomenon occurs, such as a faulty message or a literal blip on a screen.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Millionaire Donald Bain loved his private hunting lodge on the shores of Lake Manitoba, so much so he'd greet strangers with a shotgun and turned away Hollywood royalty.

How the morning routine became routine.

Knotting neckwear, strapping on wristwear and hitting the phone.

Exploring the enduring bond between God and the Jewish people; tracing the roots of the religion from Abraham to today; exploring not only historical events, but also the rich cultural expressions of the Jewish faith.

From Galileo to Einstein to Hubble, scientists have long grappled with the shape and scale of the Universe. As technology expands our view, missing space curvatures and inconsistent data related to Hubble's constant keeps us mystified.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

Surrounded by an invisible sphere of infinite data, the understanding of the universe depends on signals that are sent and received; once in a while, a strange phenomenon occurs, such as a faulty message or a literal blip on a screen.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Long before the declaration of war, the world wanted the Fuhrer dead; in Germany, fellow politicians lodge their dissent after the horrific Night of the Long Knives; among them, a plan starts to take shape.

From Galileo to Einstein to Hubble, scientists have long grappled with the shape and scale of the Universe. As technology expands our view, missing space curvatures and inconsistent data related to Hubble's constant keeps us mystified.

A Bagger dragline excavator that can produce enough raw material to power a small city in a day; a Big Red oil pump that puts a new spin on an age-old tech.

As a young journalist, Naser witnessed the atrocities of the war in Kosovo, his home country; now, his fifteen-year-old son, Ander, feels his father has unresolved pain around his experiences; together, the two travel back to Kosovo.

Surrounded by an invisible sphere of infinite data, the understanding of the universe depends on signals that are sent and received; once in a while, a strange phenomenon occurs, such as a faulty message or a literal blip on a screen.

Millionaire Donald Bain loved his private hunting lodge on the shores of Lake Manitoba, so much so he'd greet strangers with a shotgun and turned away Hollywood royalty.

Long before the declaration of war, the world wanted the Fuhrer dead; in Germany, fellow politicians lodge their dissent after the horrific Night of the Long Knives; among them, a plan starts to take shape.

From Galileo to Einstein to Hubble, scientists have long grappled with the shape and scale of the Universe. As technology expands our view, missing space curvatures and inconsistent data related to Hubble's constant keeps us mystified.

The Ramessides rise to become some of the most powerful pharaohs in Egyptian history; but, a civil war ignited by a power vacuum threatens to destabilize an empire.

Exploring the enduring bond between God and the Jewish people; tracing the roots of the religion from Abraham to today; exploring not only historical events, but also the rich cultural expressions of the Jewish faith.