The human sigh acts as a physiological reset button.
23
Gorillas can catch human colds and other illnesses.
205
Poor eyesight (myopia) is associated with higher IQ.
232
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
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