To get a song out of your head, try doing something like a puzzle or Sudoku.
13
Caffeine boosts memory.
405
The number of text messages sent and received in a given day is greater than the world's population.
198
One in five long-term love relationships began with one or both partners being involved with others.
177
It takes 492 seconds for sunlight to reach the Earth!
44
The key to happiness is spending your money on experiences rather than possessions, according to studies.
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