Oak trees can live 200 or more years.
61
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
Barbie's full name is Barbara Millicent Roberts.
78
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
On average, the life span of an American dollar bill is eighteen months.
33
Couples' personalities converge over time to make partners more and more similar.
235
In the case of an emergency, a Crayola crayon can be used as a candle and will burn for about 15 minutes.
36
On average, every dollar bill you touch has over 3,000 different types of bacteria.
8