The average person's skin weighs twice as much as their brain.
131
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Human hair and fingernails continue to grow after death.
7
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69