History

In a world without humans, the deserts once tamed rise to reclaim great triumphs: from Las Vegas to Dubai's Burj Khalifa; as sand, salt, and sun dismantle cities, the wastelands quietly take back the ground borrowed.

When humanity vanishes, the vast and fragile infrastructure hidden underground-from subways and pipelines to one of the big coal seams in the United States-begins to unravel.

In the absence of humanity, the world's cities like New York, Orlando and Rio de Janeiro are reclaimed by nature, as forests rise, animals roam free and fire and flood undo centuries of construction.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife and time.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues; as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster; but in a world without people, even the mightiest begin to crack.

In a world without humans, the deserts once tamed rise to reclaim great triumphs: from Las Vegas to Dubai's Burj Khalifa; as sand, salt, and sun dismantle cities, the wastelands quietly take back the ground borrowed.

When humanity vanishes, the vast and fragile infrastructure hidden underground-from subways and pipelines to one of the big coal seams in the United States-begins to unravel.

In the absence of humanity, the world's cities like New York, Orlando and Rio de Janeiro are reclaimed by nature, as forests rise, animals roam free and fire and flood undo centuries of construction.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife and time.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues; as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster; but in a world without people, even the mightiest begin to crack.

Mike and Jersey trip out over an Oddfellow's Lodge in Maryland, and visit one man's combination theme park, art installation and roadside attraction.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

Mike restores a 1938 International Harvester; the shop holds a swap meet; wedding bells ring for Greg.

Dave and his daughter Alyssa struggle to recover a vintage ore cart from an abandoned copper mine; Angela struggles on what should be an easy job, and Dale goes on an epic hunt for furnace oil for Donny's shop.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

Mike restores a 1938 International Harvester; the shop holds a swap meet; wedding bells ring for Greg.

Remember when people would do just about anything for an adrenaline fix? From racing cars at the "Murderdrome," to high diving on horseback, to cutting our teeth on looping water slides, revisit the ways people once chased a thrill. These death-defying stunts and gravity-pushing spectacles didn't always stick the landing, but that didn't stop anyone from trying. It's a heart-pumping jolt back to a

If size counts, these machines rewrite all the rules; Dolph Lundgren gets up close inside legendary giants: the Antonov An-225 cargo jet history's largest aircraft; the 200-ton WWII Maus tank designed by Porsche for Hitler, the largest ever made; and Bigfoot, the original monster truck that created a global phenomenon; when small isn't enough, Dolph goes massive with these supersized beasts.

As the country reels in the aftermath of 9/11, an entirely new threat terrifies the nation; deadly anthrax spores sent through the mail kill five people and spread authorities thin; the FBI works around the clock to stop this brazen act of bioterrorism, but the letters keep coming.

These are the stories of history's most unusual pastimes, some fascinating, some dangerous, but each of them completely unbelievable.

In Operation Halyard, villagers and resistance fighters built an airstrip by hand to spirit stranded airmen out of Nazi territory, while Operation Mount Hope saw American forces steal a Soviet helicopter from the African desert under cover of darkness.

Three smiths hope to cash in when they are given the opportunity to win money after each challenge; after two tough rounds, all three smiths head back to their home forge to recreate the serrated Dussage.

A century ago, the cookie industry didn't exist, until a wave of innovators turns it into a $15 billion powerhouse; from the first sandwich cookie to the invention of chocolate chips, the rise of packaged cookies, and "homemade" chain staples, each breakthrough fuels the battle for America's favorite circular sweet.

As the country reels in the aftermath of 9/11, an entirely new threat terrifies the nation; deadly anthrax spores sent through the mail kill five people and spread authorities thin; the FBI works around the clock to stop this brazen act of bioterrorism, but the letters keep coming.

Remember when people would do just about anything for an adrenaline fix? From racing cars at the "Murderdrome," to high diving on horseback, to cutting our teeth on looping water slides, revisit the ways people once chased a thrill. These death-defying stunts and gravity-pushing spectacles didn't always stick the landing, but that didn't stop anyone from trying. It's a heart-pumping jolt back to a

If size counts, these machines rewrite all the rules; Dolph Lundgren gets up close inside legendary giants: the Antonov An-225 cargo jet history's largest aircraft; the 200-ton WWII Maus tank designed by Porsche for Hitler, the largest ever made; and Bigfoot, the original monster truck that created a global phenomenon; when small isn't enough, Dolph goes massive with these supersized beasts.

From a family surviving two direct lightning strikes to a woman pulled alive from a submerged car with all its doors and windows sealed, extraordinary survival stories are being captured on camera around the world; Tony Harris and his team investigate whether the answers lie in science or something beyond.

As the team begins a large-scale drilling operation to uncover a possible metal object in the Mesa, they launch a swarm of one hundred drones that reveals a major answer about the mystery of the Bubble.

Matty raises compelling questions about the team's revealing new experiment in the Bubble boundary.

Remember when people would do just about anything for an adrenaline fix? From racing cars at the "Murderdrome," to high diving on horseback, to cutting our teeth on looping water slides, revisit the ways people once chased a thrill. These death-defying stunts and gravity-pushing spectacles didn't always stick the landing, but that didn't stop anyone from trying. It's a heart-pumping jolt back to a

As the team begins a large-scale drilling operation to uncover a possible metal object in the Mesa, they launch a swarm of one hundred drones that reveals a major answer about the mystery of the Bubble.