The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
More than 10% of the world's salt is used to de-ice American roads.
54
To get a song out of your head, try doing something like a puzzle or Sudoku.
13
The best diamonds are colored blue-white.
80
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The Pittsburgh Steelers were originally called the Pirates.
50
People who drink coffee are less likely to commit suicide than people who don't.
268
A real estate agent's rule of thumb: To estimate what a house will sell for, ask the owner what its worth and subtract 10%.
24