A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
Los Angeles's full name is "El Pueblo de Nuestra Senora la Reina de los Angeles de Porciuncula"!
72
It's impossible to kill yourself by holding your breath.
703
Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
"Big Ben" in London isn't a tower, the bell inside the tower is called "Big Ben", the tower itself is called "The Elizabeth Tower".
18
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72