To get a song out of your head, try doing something like a puzzle or Sudoku.
13
Oak trees can live 200 or more years.
61
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
The name Joshua is Hebrew for 'Jesus'.
74
Bamboo plants can grow up to 36 inches in a day.
52
The strangers in your dreams are actually people that you've seen in real life.
50