In the Pacific Northwest, an investigative team searches for evidence of Sasquatch on Vancouver Island, where Native Americans once told tales of an ape-like beast that would steal children away.

Sixty years ago, the residents of an entire Alaskan village disappeared without a trace. A passing fisherman witnessed a massive, ferocious white bear, reminiscent of a northern legend, the Bear God called Torngarsuk.

A look at the demise of the Roman Empire. Despite efforts from the last Emperor, the Romans become outnumbered by foreign invaders.

Homer's The Odyssey is the most famous epic ever written, a timeless tale of adventure filled with mythological beasts and vengeful gods. But could it have actually happened? Divers have uncovered remains that may be linked to the story of Odysseus.

When a gamma ray burst from two colliding stars hits the atmosphere, the radiation wipes out half the planet. The Americas face a slower death as ultraviolet radiation and starvation threaten to send the human race into total extinction.

Prophecies by Nostradamus, Edgar Cayce, Joseph Smith and even Web Bot proving to be truths. Along with a prediction of the end coming in 2012, how will the American Preppers Network prepare?

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

An expedition investigates controversial evidence that might confirm a history of sea monster sightings off the coast of Florida.

In the Pacific Northwest, an investigative team searches for evidence of Sasquatch on Vancouver Island, where Native Americans once told tales of an ape-like beast that would steal children away.

Sixty years ago, the residents of an entire Alaskan village disappeared without a trace. A passing fisherman witnessed a massive, ferocious white bear, reminiscent of a northern legend, the Bear God called Torngarsuk.

A look at the demise of the Roman Empire. Despite efforts from the last Emperor, the Romans become outnumbered by foreign invaders.

Homer's The Odyssey is the most famous epic ever written, a timeless tale of adventure filled with mythological beasts and vengeful gods. But could it have actually happened? Divers have uncovered remains that may be linked to the story of Odysseus.

When a gamma ray burst from two colliding stars hits the atmosphere, the radiation wipes out half the planet. The Americas face a slower death as ultraviolet radiation and starvation threaten to send the human race into total extinction.

Prophecies by Nostradamus, Edgar Cayce, Joseph Smith and even Web Bot proving to be truths. Along with a prediction of the end coming in 2012, how will the American Preppers Network prepare?

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

An expedition investigates controversial evidence that might confirm a history of sea monster sightings off the coast of Florida.

In the Pacific Northwest, an investigative team searches for evidence of Sasquatch on Vancouver Island, where Native Americans once told tales of an ape-like beast that would steal children away.

Sixty years ago, the residents of an entire Alaskan village disappeared without a trace. A passing fisherman witnessed a massive, ferocious white bear, reminiscent of a northern legend, the Bear God called Torngarsuk.

A look at the demise of the Roman Empire. Despite efforts from the last Emperor, the Romans become outnumbered by foreign invaders.

Homer's The Odyssey is the most famous epic ever written, a timeless tale of adventure filled with mythological beasts and vengeful gods. But could it have actually happened? Divers have uncovered remains that may be linked to the story of Odysseus.

When a gamma ray burst from two colliding stars hits the atmosphere, the radiation wipes out half the planet. The Americas face a slower death as ultraviolet radiation and starvation threaten to send the human race into total extinction.

Religion, mythology, art, power and science all influenced the Seven Wonders of the World. Their engineering still astounds us today.

US airline pilots are reporting near mid-air collisions with UFOs. Elizondo hears a never-before-told account from a major legacy airline pilot whose report of a glowing orange sphere while in the cockpit over Arizona is backed up by photo evidence.

Something strange is killing animals and sucking the blood from its victims. Is this creature the mysterious Chupacabra of legend, or a gruesome new hybrid mutation?

The Great Pyramids of Giza have eluded astronomers and archeologists for centuries. The world's renowned Egyptologists, astronomers and engineers join forces to solve some of the long-held mysteries about the pyramids.

Ancient Aliens

The gods worshipped by the Norse Vikings were fearsome and mysterious. Experts investigate whether these powerful Viking Gods could have been visitors from another planet.

Zahi uncovers a cache of mummies at a dig site at Saqqara and discovers a rare and important piece of Egyptian history: a beautiful anthropoid sarcophagus from the 26th Dynasty!

The great empires of the ancient world were created through war, and the most defining battles were fought through siege warfare. From the legendary battle of Troy to the fall of Rome, which siege will top our list for being the most devastating?