A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
Chocolate, sex, and laughter are all important for a healthy brain.
37
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95
The human brain doesn't stop developing until about 25 years old.
102
Your ears secrete more earwax when you are afraid than when you aren't.
229
Fingernails grow fastest on the hand you favor.
44
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18