George Washington’s secret spy code name was Agent 711

Invisible ink was known as "sympathetic stain" during the Revolutionary War. By any name, it was an effective spying tool.
La Brújula Verde

The existence of mysterious flashes in astronomical plates from the 1950s confirmed: artificial objects orbiting Earth decades before the space age?

A team of researchers has made a discovery that could reopen the debate about the existence of artificial objects orbiting ...
Smithsonian Magazine

Are These the Earliest Known Dice in the World? Native Americans May Have Used Them to Play Games of Chance More Than 12,000 Years Ago

A new study suggests that humans were playing with probability during the Ice Age—and that dice were invented 6,000 years ...