When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
A ball of glass will bounce higher than a ball made of rubber.
73
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
4.5 pounds of sunlight strike the Earth each day.
27
For every gallon of sea water, you get more than a quarter pound of salt.
45