Over its lifetime, the average microwave requires more energy to display a digital clock than to heat food.
10
To get a song out of your head, try doing something like a puzzle or Sudoku.
13
There are 365 steps on the front of the U.S. Capitol Building - one for every day of the year.
50
Passengers on the Beijing subway can pay with plastic bottles.
29
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
During his or her lifetime, the average human will grow 590 miles of hair.
69
