The IRS processes more than 2 billion pieces of paper each year.
28
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Originally, BMW was an airplane engine manufacturer.
69
Sony researchers have developed a refrigerator that only opens when you smile.
9
The cigarette lighter was invented before the match.
210
Castor oil is used as a lubricant in jet planes.
-5
Kleenex tissues were originally used as filters in gas masks.
46
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7