Whether the ancients had scientific knowledge lost to time; how and why they fashioned remarkable feats of engineering.

The question of the identity of Jack the Ripper has baffled police investigators, historians, and armchair detectives for over a century, even with media offering its own unique take on the killer's identity.

Scientists are involved in a never-ending quest to understand the vast universe the planet inhabits; it seems that for each answer science provides, even more questions arise.

For centuries, fantastic tales of terrifying monsters have fascinated mankind; bizarre beasts of all shapes and sizes have been portrayed in some of history's most classic stories and folklore.

Whether legends of vast, lost treasures hidden throughout the U.S. are real or tall tales.

The American frontier is full of legends of cowboys, Native Americans and outlaws; but there are also many eerie stories of cursed mountains, monsters and even UFOs.