Would you believe that the beginnings of modern endoscopy were really all thanks to one professional sword-swallower? Or that lack of sleep could have some strange upsides? What about drinking vomit in the name of science? These are the stories of the most bizarre, unthinkable and outrageous experiments in history.

Picture this: a full-body gas mask for babies. How about Smell-o-Vision? Or a robot powered by eating slugs? These are all real inventions, and we’ve got them covered–including inflatable airplanes, hidden cameras in your contact lenses, and coffin security systems to protect you in the afterlife.

Imagine free falling 30,000 feet without a parachute, or being buried alive and living to tell the tale. Or... what about getting trapped in a tiny room inside a sunken ship on the ocean floor...For three days? These are improbable yet true-life tales of surviving the most extraordinary conditions.

Some of the world's most valiant figures overcome the most treacherous, impossible and downright bizarre circumstances. Like a man who survives the apocalypse, or a woman involved in not one, but three maritime disasters. And a cat that proves to be unsinkable in battle. These are the stories of survival, success and reunion... against all odds.

Mother Nature may be breathtaking—but she doesn't always play nice.

A trip to the doctor is sure to cure any afflicted individual, but what happens when even the doctors are stunned by what they see?; from a family cursed with blue skin, to a girl allergic to the world's most unlimited resource and more.

A brush with death is terrifying enough—but these stories take survival to the extreme.

Sometimes the strangest things on Earth…are happening just below its surface. From tunnels carved by giant sloths to desperate attempts to stop the dead from rising again–these are the weird and wonderous tales of the sea beasts, hidden cities and impossible creatures that lurk beneath us.

Shipwrecks, plane crashes, disappearances, and UFO sightings, oh my! This episode explores the Lake Michigan Triangle and many other wild and weird places, including a creepy doll-filled island with a dark past, deadly gas-filled explosive lakes, caves that harbor deadly viruses, and the most haunted place in the U.S.

In Boston, a 25-foot tidal wave of…Molasses? A dancing plague that kills 100 people? A surgery with a 300% mortality rate? We search the globe for the strangest and most bizarre deaths on record. If the 1814 London Beer Flood doesn’t kill you, maybe a mysterious case of spontaneous human combustion will.

From a headless chicken that lives over one year, to an out-of-this-world "celestial body" where it rains molten glass...We explore the most astonishing bodies through these truly unbelievable stories. Here are the true tales of not only the tallest human ever measured, but also the shortest person on record. What about the man who survived an iron bar through his head, or a Medusa-like body of water that turns its victims to stone? Brace yourself for the extraordinary.

History is full of legendary missions--but some are so bizarre, they sound like fiction.

Many say it's not about the destination, but the journey that gets you there. From a dog's space voyage, to a harrowing story of Arctic survival and various trips through time... These are the journeys that are so extraordinary, they are truly unbelievable.

History is riddled with brilliant, life-changing discoveries... From gold, to lost treasures, to scientific findings. But, some discoveries are anything but ordinary. Like severed feet on a beach, or finding evidence of a tiny otherworldly creature. Each discovery is weirder than the last and uniquely unbelievable.

Did you know beards can be deadly? Or that a lawnmower once killed a spectator at a football game? What if I told you someone died from drinking too much water? These are just some of the wild and crazy deaths... that are truly unbelievable.

Some of Earth’s most remarkable creatures push the limits of belief — from a headless chicken who toured the nation, to a goat who tipped the scales of war, to dolphins drafted into Cold War espionage.

These are the wild, unexpected stories of heroes you’d never see coming.

From a doctor who swallowed Yellow Fever vomit to prove a theory, to another who stitched together a two-headed dog, history’s boldest experiments reveal just how far some minds will go.

This episode dives into the unbelievable stories that challenge what we think we know about our place in the universe.

Uncover the wild beginnings behind everyday objects, legendary figures, and even the sayings we use every day.

When the sun sets, strange things come alive. Imagine a full-scale war waged against thousands of invading frogs, an artist who only paints while sleepwalking, and battlefield wounds that literally glow in the dark. These bizarre and unbelievable moments all have one thing in common--they happen only when darkness falls.

From the unexpectedly gruesome sport of toe wrestling, to a tight competition between the world's ugliest pets, or even the harrowing origins of some of our favorite schoolyard faceoffs. We're exploring the world of strange games; each one more bizarre than the next.

When we think of disasters, we picture hurricanes, earthquakes, or floods. But some catastrophes defy even our wildest expectations.

From the kitchen to the battlefield, some machines are just too strange to believe. Like an appliance that runs on pup power. Or a mouse trap so deadly, you need a permit to own one.

What drives someone to gamble with their own life? From a French tailor who leaps off the Eiffel Tower to a man struck by lightning more times than should be humanly possible, these perilous wagers with death are as shocking as they are unbelievable.

Weapons rank among humanity's most powerful—and wildest—inventions.

Some of history's most brilliant innovations are also the most bizarre. Like a fully functioning car that hovers in midair, or clothing made out of everyone's favorite source of calcium. How about a robot dog that breathes fire? These are the tales of history's most bizarre inventions.

Imagine a man floating through the sky by dozens of balloons, all attached to a single lawn chair. Or, a circus conducted by a team of performers only visible via magnifying glass. How about a cycling grandpa that proves to be no match for his youthful counterparts? These are the tales of history's most unbelievable, strange and completely unexpected spectacles.

Have you heard about the warrior bear who helped the allies win WWII? Or how about the real-life hobbit humans in ancient Indonesia? What if I told you gerbils were recruited to fight crime in Canadian jails? This episode explores the unbelievable stories of the planet's most fantastic beings.

Imagine a city where the commute requires a zipline, or a town crawling with some strange monkeys and even a spot that holds a beautiful waterfall that spews blood. Get your passports ready, as we take a tour of the most unusual places in history.