Pumice is the only rock that floats on water.
14
Liquid TIDE laundry detergent glows under a blacklight.
96
The average home creates more pollution than does the average car.
33
Diamonds can be shattered with a hammer.
-104
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Iron weighs more after it rusts.
16
The smell of freshly cut grass is actually a plant distress call.
31
The only letter not appearing on the Periodic Table is the letter "J".
180