The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
If your DNA was stretched out it would reach to the moon 6,000 times.
256
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515