To get a song out of your head, try doing something like a puzzle or Sudoku.
13
The key to happiness is spending your money on experiences rather than possessions, according to studies.
21
An ounce of platinum can be stretched 10,000 feet.
40
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
Mushrooms are more closely related to humans than they are to plants.
47
There are more than 10 million bricks in the Empire State Building!
75
The human eye blinks an average of 4,200,000 times a year.
233
Couples' personalities converge over time to make partners more and more similar.
235