Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Iron weighs more after it rusts.
16
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Nearly 50% of the world's scientists are assigned to military projects.
71
The earth is approx. 6,588,000,000,000,000,000 tons.
175
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51