Castor oil is used as a lubricant in jet planes.
-5
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
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
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12