Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Sound travels about 4 times faster in water than in air.
408
One third of the electricity produced on earth is used to power electric light bulbs!
75
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Balsa wood is classified as a hard wood!
41
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Pumice is the only rock that floats on water.
14
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9