The YKK on the zipper of your Levis stands for Yoshida Kogyo Kabushibibaisha, the worlds largest zipper manufacturer.

An ordinary TNT bomb involves atomic reaction, and could be called an atomic bomb. What we call an A-bomb involves nuclear reactions and should be called a nuclear bomb.

There is an underground mushroom in Oregon that measures 3.5 miles across.

A M A Z I N G   F A C T S