The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
In zero gravity, a candle's flame is round and blue.
16
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The force of a suction cup is calculated using F=AP.
15
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
According to studies, men change their minds two to three times more often than women.
72