Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Nearly 50% of the world's scientists are assigned to military projects.
71
The only letter not appearing on the Periodic Table is the letter "J".
180
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
If the chemical sodium is dropped into water it will immediately and violently explode.
67
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
For every gallon of sea water, you get more than a quarter pound of salt.
45