What motivates someone to steal? Is it just for the money, or could a criminal have other reasons for pulling off a particularly daring robbery?

For centuries, humanity has looked up at the Moon with a sense of wonder. But is the Moon just a rock floating in space? Or could it hold profound secrets?

We'll examine some of the most devastating plagues in human history, as well the scientific advances to combat them.

The total disregard for life exhibited by serial killers shocks our sense of humanity and makes us question our safety and security.

Despite all of our modern technology, there are aspects of some vanishings that are bizarre and simply can't be explained.

For centuries, legends and eyewitness accounts have told of a massive, hairy creature that roams the forest on two legs. But does Bigfoot actually exist?

Mankind's quest for gold harkens back thousands of years, but what is the special power that gold wields over our collective consciousness?

What makes us want to create magnificent buildings that are bigger and grander than ourselves--and last for centuries?

According to Plato, the lost continent of Atlantis was once home to an advanced civilization before it was destroyed in a cataclysm. But was Plato's story merely a myth?

Why is it that America's greatest monuments continue to enthrall us decades--and sometimes centuries--after their creation?

From ancient civilizations to 20th century empires, mankind has had an inexplicable fascination with preserving the dead. But why?

Many believe it to be the Word of God, while others claim it contains inconsistencies and contradictions that could only be manmade.

Stories of great impostors are both daring and baffling. What compels a person to attempt to become someone else? Is it merely for material gain, or to pull off an ingenious scam?

Despite all of our modern technology and sophistication, there is much that we still don't know about what lies beneath our feet, deep underground.

For decades, the debate has raged as to what exactly Unidentified Flying Objects--or "UFOs"--really are.

Throughout history, many have believed that certain places, things, or even people can be tainted with dark curses. Ominous lakes that morph into watery graves.

Our five senses--sight, smell, hearing, taste, and touch--construct the reality of the world around us, like a blank canvas continuously painted and repainted over every day.

Some of history's greatest tales are stories of escape, the most incredible of which defy explanation.

A dog that can detect cancer faster than doctors using sophisticated equipment. A horse that can read your mind. And birds that can sense disaster days before it happens.

Dracula. Lycaon of Arcadia. The Beast of G vaudan. These are the names of grotesque monsters who have reared their terrifying heads throughout history.

A miraculous meteorite falling from the heavens. A priceless gemstone with a deadly curse. And a chunk of sandstone considered so sacred that wars have been fought to protect it.

A house that narrowly dodges the path of a tornado. Rain that falls from the sky like blood. And lightning that follows you...into your home.

Deadly dances. Masters of manipulation. Mass suicides. Murder. Many of the world's deadliest cults ventured down dark, dangerous rabbit-holes of twisted ideologies.

Abandoned cities. Ancient cultures nearly erased by time. And colossal empires that simply vanished without a trace. How does a civilization become "lost"' What could cause once-thriving groups of people to just abandon their great cities, never to return