An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The average car produces a pound of pollution every 25 miles!
18
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
The United States produces enough plastic film annually to cover the entire state of Texas.
13
The electric chair was invented by a dentist!
122
In the early 1960's, Porsche commercially manufactured farm tractors.
24
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308