John Watt's steam engine not only streamlined travel and manufacturing, but was also an impetus for the Industrial Revolution.

For three days in 1934 that Hitler called the "Night of the Long Knives," the chancellor ordered the execution of some 400 Nazis whom he feared threatened his power.

A 2008 study led by the Smithsonian Institute found that likely all the 13 life-size quartz crystal skulls are likely fakes.

The case of Dr. Sam Sheppard was so controversial from the outset that the federal court later ruled his initial trial a "mockery of justice."

Historians disagree on how cruel Shaka truly was as a ruler, but his military prowess was indisputable.

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

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.

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.