If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
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
You can't tickle yourself.
29
On average, there's 100 billion neurons in the human brain.
83
The human body contains over a billion miles of DNA.
147
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
It takes about 20 seconds for a red blood cell to circle the whole body.
102