One cubic foot of gold weighs more than 1,200 pounds!
78
The only letter not appearing on the Periodic Table is the letter "J".
180
Your brain is 80% water.
525
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Most dust particles in your house are made from dead skin!
67
The force of a suction cup is calculated using F=AP.
15
For every gallon of sea water, you get more than a quarter pound of salt.
45