You can't tickle yourself.
29
Obsessive nose picking is called Rhinotillexomania.
101
Gorillas can catch human colds and other illnesses.
205
Our Right Lungs takes more air than our left lung.
194
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
The average sperm cell swims at 8 inches per hour.
4
One human hair can support 3 ounces.
191