The first alarm clock could only ring at 4 a.m.
120
The United States produces enough plastic film annually to cover the entire state of Texas.
13
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
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
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Kleenex tissues were originally used as filters in gas masks.
46