When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The force of a suction cup is calculated using F=AP.
15
For every gallon of sea water, you get more than a quarter pound of salt.
45
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Liquid TIDE laundry detergent glows under a blacklight.
96
A single speck of dust is half way in size between a subatomic particle and the Earth.
15