For every gallon of sea water, you get more than a quarter pound of salt.
45
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Most dust particles in your house are made from dead skin!
67
4.5 pounds of sunlight strike the Earth each day.
27
The earth is approx. 6,588,000,000,000,000,000 tons.
175