Balsa wood is classified as a hard wood!
41
Scientists in Germany have developed a candy that doesn't cause cavities.
11
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The sun is 330,330 times larger than the earth.
75
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
