Nylon is made from coal and petroleum.
42
Pumice is the only rock that floats on water.
14
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Nearly 50% of the world's scientists are assigned to military projects.
71
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Diamonds can be shattered with a hammer.
-104
Iron weighs more after it rusts.
68