Research indicates that plants grow healthier when they are stroked.
173
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Pumice is the only rock that floats on water.
14
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42