Castor oil is used as a lubricant in jet planes.
-5
Car airbags kill 1 person for every 22 lives that they save.
80
The first alarm clock could only ring at 4 a.m.
120
Sony researchers have developed a refrigerator that only opens when you smile.
9
Originally, Nintendo was a playing card manufacturer.
70
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
