A man earned 4 million airline miles for free without breaking any laws by using his credit card to purchase free-delivery $1 coins from the U.S. mint.
11
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
The symbol on the 'pound' key (#) is called an octothorpe.
82
On average, a disposable diaper can hold up to 7 pounds of liquid.
22
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The chills you sometimes feel when listening to music is called "musical frisson."
18