By weight, Bone is five times stronger than steel.
417
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Poor eyesight (myopia) is associated with higher IQ.
232
It takes about 20 seconds for a red blood cell to circle the whole body.
102
If the human eye was a digital camera, it would have 576 megapixels.
25
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31