A million dollars' worth of $100 bills weighs only 22 pounds!
32
If you took a standard slinky and stretched it out it would measure 87 feet.
52
To get a song out of your head, try doing something like a puzzle or Sudoku.
13
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Caffeine boosts memory.
405
About two hundred babies are born worldwide every minute.
237
There are more than 10 million bricks in the Empire State Building!
75