They're huge, ferocious and frightening. They live in remote corners of the world. Are these real dragons descendants of prehistoric reptiles?

Sodom and Gomorrah-a Biblical tale of two cities incinerated by a hail of fire and brimstone. Astronomers, archeologists and biblical scholars investigate the possible science behind the myth.

Ancient Aliens

An examination of Erich von Daniken's controversial theories that have captured the attention of the world and ignited a movement known as Ancient Astronaut Theory.

At the end of the 3rd century, one man rose from soldier to Emperor. Heroic Aurelian reunited the empire in just five years and became known as Restorer of the World.

UFO Files

Beginning in the 1960s, thousands of UFO landings, flyovers and collisions have left scientific evidence behind for study. These events have become known in the field of UFOlogy as the "trace cases."

Host Bobby Bognar crisscrosses the country to reveal what's behind a pancake breakfast. He gets fresh with a cow in a quest to learn if there really is butter in buttermilk pancakes.

The Har at Megiddo gave its name to Armageddon, the final battle described in the book of Revelation. Trace the history of the cities built on this hilltop.

Lue Elizondo previously identified five observable characteristics of UFOs, dubbed the 'five observables'. But there is a so-called sixth observable Elizondo began to investigate - an invisible threat these craft may pose.

They're huge, ferocious and frightening. They live in remote corners of the world. Are these real dragons descendants of prehistoric reptiles?

Sodom and Gomorrah-a Biblical tale of two cities incinerated by a hail of fire and brimstone. Astronomers, archeologists and biblical scholars investigate the possible science behind the myth.

Ancient Aliens

An examination of Erich von Daniken's controversial theories that have captured the attention of the world and ignited a movement known as Ancient Astronaut Theory.

At the end of the 3rd century, one man rose from soldier to Emperor. Heroic Aurelian reunited the empire in just five years and became known as Restorer of the World.

UFO Files

Beginning in the 1960s, thousands of UFO landings, flyovers and collisions have left scientific evidence behind for study. These events have become known in the field of UFOlogy as the "trace cases."

The Har at Megiddo gave its name to Armageddon, the final battle described in the book of Revelation. Trace the history of the cities built on this hilltop.

Lue Elizondo previously identified five observable characteristics of UFOs, dubbed the 'five observables'. But there is a so-called sixth observable Elizondo began to investigate - an invisible threat these craft may pose.

They're huge, ferocious and frightening. They live in remote corners of the world. Are these real dragons descendants of prehistoric reptiles?

Sodom and Gomorrah-a Biblical tale of two cities incinerated by a hail of fire and brimstone. Astronomers, archeologists and biblical scholars investigate the possible science behind the myth.

Ancient Aliens

An examination of Erich von Daniken's controversial theories that have captured the attention of the world and ignited a movement known as Ancient Astronaut Theory.

At the end of the 3rd century, one man rose from soldier to Emperor. Heroic Aurelian reunited the empire in just five years and became known as Restorer of the World.

UFO Files

Beginning in the 1960s, thousands of UFO landings, flyovers and collisions have left scientific evidence behind for study. These events have become known in the field of UFOlogy as the "trace cases."

Host Bobby Bognar crisscrosses the country to reveal what's behind a pancake breakfast. He gets fresh with a cow in a quest to learn if there really is butter in buttermilk pancakes.

Russia's first Tsar led a brutal and unpredictable life. Follow the story of the fortification and expansion of his nation.

Featuring first-person accounts by military eyewitnesses, government insiders and UFO experts, this special traces what a government investigation into 144 recent sightings can tell us about what these mysterious objects are and where they come from.

In legends, they're called 'krakens': enormous squid with tentacles that terrify and can squeeze the life from sailors. Are they real? MonsterQuest goes into the deep to capture the first footage of these giant squid.

This episode examines almost 20 centuries of theories, including meteors, novae, supernovae and comets...but is the truth to be found in a combination of astronomy--and astrology?

Ancient Aliens

Ancient emperors, kings and pharaohs were often attributed with otherworldly strengths, abilities and wisdom, and many were even considered gods by the people they ruled. Who were these exceptional leaders?