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.

"There was a failure at every level of this case... His exoneration is not going to get him back the 25 years he lost for a murder he did not commit."

Even into the 19th century, naturalists included illustrations of mythical creatures alongside real ones in scientific texts.

In 1958, Mary Jackson fought against sexism and segregation to become a NASA Engineer, and her work helped send Americans into space.

A private art collector said they paid a furniture restorer $1,350 to clean up a copy of a 17th-century artwork by Bartolomé Esteban Murillo.

Born Rodrigo Borgia, Pope Alexander VI did everything from selling church offices to hiring 50 prostitutes in one night to secure his place as history's dirtiest pope.