To get a song out of your head, try doing something like a puzzle or Sudoku.
13
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
Wearing red increases attraction.
30
People who laugh more are better able to tolerate pain - both physical and emotional.
36
Pollen never deteriorates. It is one of the few natural substances that lasts indefinitely.
58
Dartboards are made out of horsehairs.
129