To get a song out of your head, try doing something like a puzzle or Sudoku.
13
In 1976, an underachieving Princeton junior undergraduate wrote a term paper detailing how to make a nuclear bomb. He got an "A", but never got his paper back because it was seized by the FBI.
16
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
The small pocket in the larger pocket of your jeans was designed for pocket watches.
11
Since 1982, a radio frequency emanating from Russia has been broadcasting a buzzer-like sound and, periodically, an unknown voice reads orders, names, and numbers. No one knows where exactly it is coming from or what it means.
13
You can actually sharpen the blades on a pencil sharpener by wrapping your pencils in aluminum foil before inserting them.
209
Mushrooms are more closely related to humans than they are to plants.
47
The ashes of the average cremated person weigh nine pounds.
40