For every gallon of sea water, you get more than a quarter pound of salt.
45
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Iron weighs more after it rusts.
68
In zero gravity, a candle's flame is round and blue.
16
A cesium atom in an atomic clock beats over nine billion times a second.
43
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Nylon is made from coal and petroleum.
42