Count Xavier Dupont de Ligonnès vanished after the murders of his wife and four children in 2011 — and no one has seen him since.

The peculiar box comes with a number of tools believed to be effective in warding off evil, including empty potion bottles, a vial of sharks' teeth, a Bible, and a pistol.

Officially named Advhena magnifica, or magnificent alien, this new glass sponge species found in the deep Pacific Ocean looks a lot like an alien from a Hollywood movie.

From 1943 to 1945, a civilian task force of 345 Allied academics known as the Monuments Men managed to save 5 million cultural relics.

Whether it's elephants, pandas, or kangaroos, there's actually a scientific reason why looking at cute baby animal pictures makes you feel so good.

On December 4, 1926, beloved mystery writer Agatha Christie vanished in a case that remains unsolved today.

"We have seen thousands of amber fossils but the preservation of color in these specimens is extraordinary."

On September 1, 1969, about 40 people in Berkshire County, Massachusetts reported seeing a UFO — and one boy named Thomas Reed claimed that he and his family were taken aboard.

A lab experiment modeled off conditions on the two planets showed the high pressure underground likely produces diamonds that fall to the planets' cores.

White supremacist Thomas Blanton was the last survivor of the three Ku Klux Klan members who were convicted for the attack.

During the Red Summer of 1919, white mobs — fueled by racial animosity, Communist paranoia, and yellow journalism — attacked Black communities across the United States with impunity.