Mushrooms are more closely related to humans than they are to plants.
47
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human eye blinks an average of 4,200,000 times a year.
233
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139