If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain doesn't stop developing until about 25 years old.
102
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
A man's beard grows fastest when he anticipates sex.
239