The bark of an older redwood tree is fireproof.
65
The average home creates more pollution than does the average car.
33
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Pumice is the only rock that floats on water.
14
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Pure water (H2O) does not conduct electricity on its own.
46
The force of a suction cup is calculated using F=AP.
15
