You forget 90% of your dreams.
256
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cows can sleep standing up, but they can only dream lying down.
745
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Only about 2% of the world population has green eyes.
36