The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
The life boat was patented in 1845!
29
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The IRS processes more than 2 billion pieces of paper each year.
28
Castor oil is used as a lubricant in jet planes.
-5