In 1927, Joe Kennedy teamed up with silent film star Gloria Swanson to produce films together. Within three years, he'd broken up her marriage, abandoned their shared business, and ruined her financially.

Among the Frankfurt Airport's more unique roles is that of 'fish handler.' His job is to check the oxygen level and water clarity of the millions of live fish in transit.

For 14 years, Hitler refused to marry his mistress Eva Braun, fearing it would alienate his female fans. Toward the end of his reign, he changed his mind--but their wedding came with a sinister caveat.

The cuttlefish has the largest brain-to-body ratio of all invertebrates, which explains why its camouflage is so intricate and masterful.

The caracal is a fierce and agile predator. And the way it pursues airborne prey is astounding.

Grand Master Tanaka's students must learn to react to attacks in the blink of an eye.

In 1916, 32 men were trapped in a mine near Lake Erie. Garrett Morgan saw an opportunity to prove his fireproof hood worked - and went in to rescue them.

At the age of 22, Herman Melville joined a whale ship bound for the South Pacific. Aboard, he's lent a copy of "Shipwreck of the Whale-Ship Essex," a true story about a vengeful whale that will capture his imagination.

Late 19th-century sideshows specialized in curiosities like mummies to attract crowds. And curiosities didn't come bigger than Sylvester, who was supposedly killed in a gunfight.

For over two million years, humans have evolved into optimal running machines. See which body parts are a result of that.