A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
Diamonds mined in Brazil are harder than those found in Africa.
40
Coins usually survive in circulation for about 30 years.
66
The chills you sometimes feel when listening to music is called "musical frisson."
18
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
The revenue that is generated from gambling is more than the revenue that comes from movies, cruise ships, recorded music, theme parks, and spectator sports combined.
15
Researchers say that lining the toilet seat with paper is pretty much pointless
8