Iron weighs more after it rusts.
16
The bark of an older redwood tree is fireproof.
65
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
German chemists made a replica of a trophy the size of one molecule.
68
The sun is 330,330 times larger than the earth.
75
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
The average home creates more pollution than does the average car.
33