Conjoined twins occur in just one out of every 200,000 live births.

Ueli Steck may have been Earth's best mountaineer, but one tragically bold attempt on Mount Everest brought his impressive life to an end.

While we know Dr. Seuss best for his tongue twisters and whimsical characters, the famed children's author actually got his start by drawing some rather controversial ads.

What are subliminal messages? Do subliminal messages work? Though everyone from Coca-Cola to Disney has been accused of using these tactics, few of us seem to know the truth about what these messages are and whether or not they're effective.

For six long years, Joseph Pistone abandoned his personal life and worked his way up the rungs of the Bonanno crime family as Donnie Brasco.

On December 16, 1985, John Gotti organized a ruthless assassination on Gambino crime boss Paul Castellano outside Sparks Steak House in New York City. It was a murder that would change the New York Mafia forever.

After her husband was executed by the King of France, Jeanne de Clisson set off on a quest of piracy and bloody justice.

Born with severe deformations, Thalidomide babies were the result of one pharmaceutical company's coverups and dark past.

When Theodosia Burr Alston went to meet her father in New York, she left her husband behind and boarded a ship with her doctor. But by the time the ship should have arrived, it was nowhere to be found.

Michael Malloy was a down-on-his-luck drunk during the Great Depression when he was targeted for murder as part of a life insurance scam. The only problem was, he wouldn't die.

Dating back to 500 B.C., the Nazca lines have been called the "Eighth Wonder of the World".