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
Gorillas can catch human colds and other illnesses.
205
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
You can't tickle yourself.
29
Every human spent about half an hour as a single cell.
144
A human being loses an average of 40 to 100 strands of hair a day.
133