The sum of all the numbers on a roulette wheel is 666.
Before anesthesia, surgery wasn't considered the work of a licensed medical professional.
Jørn Utzon, the architect behind Sydney's famed Opera House, never got to see his greatest achievement completed.
There's no twist ending to this story.
Every note that Armstrong let loose made the world feel a bit more wonderful.
These links are a great way to start your day!
All the food gets its own Pantone color code.
Some ants love this caterpillar's sugary secretions—but once they drink it, the caterpillar rules them.
Could a koala frame you for a crime? Find out in the September issue of mental_floss Magazine!
These words sound a lot more suspect than their fairly mundane meanings might suggest.
Anne Frank was captured by the Nazis on this date in 1944.
A look back at the many transformations of one of the most recognizable mascots in the world.
John Green breaks down some little-known facts about what happens to our brains in la-la land.
In honor of Art Appreciation Month, the artistic wizards at Hasbro have recreated famous masterpieces out of a classroom staple.
After three years of prep, Australian daredevil Robbie Maddison was in for the ride of his life.