Ernest Glen Wever and Charles William Bray, the scientists behind the cat telephone, set out to learn more about how sound is perceived by the auditory nerve.

Though it was previously believed to be iron, King Tut's dagger is most likely made from meteorite metals.

A four-year-old child was once mailed from her parents' home to her grandparents' house which was 73 miles away.

Originally designed to create multiple copies of a single document, the Thomas Edison electric pen would end up revolutionizing the tattoo industry.

The severed mokomokai heads of the Maori were carved, boiled, smoked, oil, and then paraded around like war trophies.

In four years, the Cleveland Torso Murderer killed, dismembered and castrated 12 different victims, and was never identified.

During the London Beer Flood, over 380,000 gallons of beer flowed out of the brewery at high speeds.

Without Vincenzo Peruggia's daring Mona Lisa theft operation in 1911, would the iconic painting even be well-known today?

Infamous fake photos from a time before photoshop.

The 1939 Nazi rally at Madison Square Garden was attended by 20,000 people.