Obsessive nose picking is called Rhinotillexomania.
101
Early American humans hunted car-size armadillos and used their shells for houses.
12
Pain occurs when sounds are above 130 db.
124
By weight, Bone is five times stronger than steel.
417
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Tigers can see 6 times better at night than humans.
305
The human eye blinks an average of 4,200,000 times a year.
233
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99