For the scene in The Shining where Jack Nicholson types out “All work and no play makes Jack a dull boy” over and over, director Stanley Kubrick recorded an actual typist typing the words to ensure the sound effect in the movie was perfectly accurate.

To break free from Earth’s gravitational field, objects need to achieve a speed of 25,020 miles per hour.

The green ink used to print U.S. currency was invented by a Canadian chemist, Thomas Sterry Hunt, in 1857.