On average, there's 100 billion neurons in the human brain.
83
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
The average person's skin weighs twice as much as their brain.
131
Gorillas can catch human colds and other illnesses.
205
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197