When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The sun is 330,330 times larger than the earth.
75
Aluminum used to be more valuable than gold!
84
Sound travels about 4 times faster in water than in air.
408
Each day, up to 150 species of life become extinct.
-23
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
A 'jiffy' is an actual unit of time for 1/100th of a second!
66