The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
23
By peeing in the shower, you can save 1,157 gallons of water a year.
31
There are 293 ways to make change for a dollar.
148
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
The mile is Latin for 1,000. The number of paces it took the average Roman!
36