The external tank on the space shuttle is not painted. The quadrature of a circle is the square which has equivelent area to that circle. Rubber bands last longer when refrigerated. Peanuts are one of the ingredients of dynamite. There are 293 ways to make change for a dollar.
Stewardesses is the longest word typed using only the left hand.
A common incorrect useless fact - On a Canadian two dollar bill, the flag flying over the Parliament Building is an American flag. Wrong its a Union Jack. The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket.