A small airplane can fly backwards.
75
The cigarette lighter was invented before the match.
210
Kleenex tissues were originally used as filters in gas masks.
46
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
The life boat was patented in 1845!
29
Sony researchers have developed a refrigerator that only opens when you smile.
9
The United States produces enough plastic film annually to cover the entire state of Texas.
13