The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Most dust particles in your house come from dead skin.
48
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
German chemists made a replica of a trophy the size of one molecule.
68
Scientists aren't sure what color dinosaurs were.
312
Pumice is the only rock that floats on water.
14
