Cold water weighs more than hot water.
93
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The average home creates more pollution than does the average car.
33
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
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
German chemists made a replica of a trophy the size of one molecule.
68