Your thumb is about the same size as your nose.
124
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
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
Tigers can see 6 times better at night than humans.
305
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Only humans shed emotional tears.
331
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24