The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
By weight, Bone is five times stronger than steel.
417
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
We share 70% of our DNA with a slug.
218