The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
In zero gravity, a candle's flame is round and blue.
16
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17