Our brains have a negativity bias and will remember bad memories more than good ones.
15
By weight, Bone is five times stronger than steel.
417
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
We share 70% of our DNA with a slug.
218
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