There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6
Play-Doh was first manufactured as a wallpaper cleaner.
122
Pollen never deteriorates. It is one of the few natural substances that lasts indefinitely.
58