Only about 2% of the world population has green eyes.
36
Mushrooms are more closely related to humans than they are to plants.
47
Sound travels about 4 times faster in water than in air.
408
The word 'mile' is derived from the Latin word for 1,000 - the number of paces it took the average Roman!
6
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
