There was once an undersea post office in the Bahamas.
241
Sunflowers can be used to clean up radioactive waste.
17
To get a song out of your head, try doing something like a puzzle or Sudoku.
13
The average American uses eight times as much fuel energy as an average person anywhere else in the world.
28
Coins usually survive in circulation for about 30 years.
66
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114