The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Research indicates that plants grow healthier when they are stroked.
173
Pumice is the only rock that floats on water.
14
The force of a suction cup is calculated using F=AP.
15
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
A cubic yard of air weighs about 2 pounds at sea level.
31
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155