A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In zero gravity, a candle's flame is round and blue.
16
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Balsa wood is classified as a hard wood!
41
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
German chemists made a replica of a trophy the size of one molecule.
68
