Kleenex tissues were originally used as filters in gas masks.
46
All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
There are only 14 blimps in the world.
69
The United States produces enough plastic film annually to cover the entire state of Texas.
13
The first alarm clock could only ring at 4 a.m.
120
More than a billion transistors are manufactured every second.
-25