Babies are born without knee caps.
78
On average, the life span of an American dollar bill is eighteen months.
33
You can actually sharpen the blades on a pencil sharpener by wrapping your pencils in aluminum foil before inserting them.
209
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
Oak trees can live 200 or more years.
61
If you had 10 billion $1 notes and spent one every second of every day, it would require 317 years for you to go broke.
109
In many countries, urine was used as a detergent for washing.
17
A million dollars' worth of $100 bills weighs only 22 pounds!
32