Blood vessels, intestines, the heart - all of the reed frog's organs are visible through its translucent skin. It's a great adaptation for camouflage... and just plain gross.

In 1828, John Jacob Astor built a trading post on the Missouri River. Business was so profitable that it only took four decades for Astor to become America's first multimillionaire.

The spine-chilling events made famous by the film The Exorcist, were based on the real-life accounts of Father Albert Hughes.

To understand what happened in the crash of Santa Barbara Airlines Flight 518, investigators turn to the pre-flight checklist. But, mysteriously, it's missing a lot of crucial information.

Known as Darwin's frog, this male amphibian takes daycare to another, grotesque level. See for yourself.

The bust of Nefertiti contains one of the most beautiful faces in the world. So beautiful, a mathematical formula was used to sculpt it.

One highly influential ancient Middle Eastern civilization established some of the essential systems we still use today. Think you know which it is?

"Heart of Glass" is not only one of Blondie's most recognizable songs; it also pushed them beyond the realm of punk rock and into the mainstream disco scene.

This propaganda footage, shot right before the fall of the Third Reich, was supposed to be destroyed. And for good reason - it reveals the medical condition Hitler tried to hide.

Using cutting-edge digital mapping technology, scientists of the Stonehenge Hidden Landscape Project find signs of a "long barrow," a sophisticated mass grave that reveals strange burial rituals and the arrival of a new era.