Pumice is the only rock that floats on water.
14
Pure water (H2O) does not conduct electricity on its own.
46
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The sun is 330,330 times larger than the earth.
75
In zero gravity, a candle's flame is round and blue.
16
One third of the electricity produced on earth is used to power electric light bulbs!
75
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39