The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nearly 50% of the world's scientists are assigned to military projects.
71
Billions of neutrinos pass unnoticed through your body every second.
6
The only letter not appearing on the Periodic Table is the letter "J".
180
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
For every gallon of sea water, you get more than a quarter pound of salt.
45
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Your brain is 80% water.
525