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
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Pain occurs when sounds are above 130 db.
124
Gorillas can catch human colds and other illnesses.
205
Only humans shed emotional tears.
331