History

Percy Fawcett becomes obsessed with a lost city deep in the Amazon jungle, a place he names the City of Z; Fawcett vanishes trying to locate it despite numerous missions to find him.

Every once in a while, it's not the weapons and wars that redraw a new world order, but the ideas and inventions; with Dolph Lundgren leading the charge, witnessing the printing press that toppled kings, the Apple II computer dreamed up in a garage and the iconic Model T that put the world on wheels; these revolutionary machines didn't just reshape history, they created it.

Mother Nature doesn't always play nice, whether it's a mile-long sinkhole, a biblical swarm of crop-killing grasshoppers or an invasion of rum-fueled monkeys running wild on the island of St. Kitts; stories where humans go head-to-head with nature.

Big Donny's senior drivers battle each other in the far north, while his most junior races to a hydro plant that can't restore power without her; when a competitor ups his game, Donny discovers his hotshotting empire is under attack.

Matt follows a childhood dream to track down the car owned by America's most famous mobster, Al Capone, during his alleged Canadian hideaways.

The source of Slumach's lost gold.

Big Donny's senior drivers battle each other in the far north, while his most junior races to a hydro plant that can't restore power without her; when a competitor ups his game, Donny discovers his hotshotting empire is under attack.

Matt follows a childhood dream to track down the car owned by America's most famous mobster, Al Capone, during his alleged Canadian hideaways.

A CBP canine is on the hunt for concealed contraband.

Planning a surprise visit to a married man could cause one traveler to be left at the airport; shocked by an undeclared stun gun, CBP race against time to find the owner before the plane boards.

Hawkeye becomes a villain after his practical joke on Charles goes awry.

Col. Potter is overwhelmed by the attention he receives as his staff tries to reduce his blood pressure before his annual physical.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

For decades experts believe they know what caused the Hindenburg disaster: that leaking hydrogen--causing the airship to burst into flames; but there may be more to this story.

Deep beneath the sands of Egypt lie 24 enormous sarcophagi, and every one of them is empty; discussing what purpose those giant tombs had served.

Counting down the top 10 locations around the world that may be hiding alien bases, including a cavern beneath the ice of Antarctica, a lake in China that is a hotspot for UFOs, and a pyramid under the slopes of Mount Denali.

Hawkeye becomes a villain after his practical joke on Charles goes awry.

Col. Potter is overwhelmed by the attention he receives as his staff tries to reduce his blood pressure before his annual physical.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

Strange discoveries are emerging from around the world; these include a golden orb on the Alaskan seafloor, claw-marked caves in Brazil, ancient burials and mysterious manuscripts; Tony Harris and his team investigate.

While investigating a region high above the Triangle with specialized rockets, the team makes a discovery that may explain the mysterious phenomena on Skinwalker Ranch.

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?

The origins of humanity can be traced back to Africa, and some of the oldest religious traditions across the continent describe mysterious beings who descended from the sky in thunderous vehicles. Could it be that the ancient mythology of Africa describes our first encounters with extraterrestrials?

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?