When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Iron weighs more after it rusts.
16
4.5 pounds of sunlight strike the Earth each day.
27
A 'jiffy' is an actual unit of time for 1/100th of a second!
66