The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Each king in a deck of playing cards represents a great king from history: spades - King David, clubs - Alexander the Great, hearts - Charlemagne, and diamonds - Julius Caesar.
33
The word "impossible" dropped in use by 50% over the course of the 20th century
5
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Alaska is the only state that can be typed on one row of keys on a QWERTY keyboard.
147
Lurch, a Watusi bull, had the largest horns in the world.
32