Gorillas can catch human colds and other illnesses.
205
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
One human hair can support 3 ounces.
191
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Human hair and fingernails continue to grow after death.
7
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515