Pumice is the only rock that floats on water.
14
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
A cesium atom in an atomic clock beats over nine billion times a second.
43
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
One third of the electricity produced on earth is used to power electric light bulbs!
75
Liquid TIDE laundry detergent glows under a blacklight.
96