The WD in WD-40 stands for Water Displacer.
30
The face of a penny can hold about thirty drops of water.
85
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6
In Tokyo, a bicycle is faster than a car for most trips of less than 50 minutes!
58
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
There are 635,013,559,599 possible hands in a game of bridge.
39
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12