Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Pumice is the only rock that floats on water.
14
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The left ear is more responsive to words of love and emotion whispered into it than the right.
40