Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human sigh acts as a physiological reset button.
23
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
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
The world's shortest man measures only 21.5 inches.
73
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161