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
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
The bark of an older redwood tree is fireproof.
65
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18