The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
You burn more calories sleeping than you do watching television.
348
Water is actually naturally blue.
48
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
The oldest living person smoked cigarettes from the age of 21 to 117.
13