In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
You can't tickle yourself.
29
Obsessive nose picking is called Rhinotillexomania.
101
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
On average, there's 100 billion neurons in the human brain.
83
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15