The world's shortest man measures only 21.5 inches.
73
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Gorillas can catch human colds and other illnesses.
205
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Babies crawl an average of 200m a day.
212
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
On average a woman has 4 sexual partners in her lifetime.
-143
You can't tickle yourself.
29