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
The life boat was patented in 1845!
29
Kleenex tissues were originally used as filters in gas masks.
46
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
A small airplane can fly backwards.
75
More than a billion transistors are manufactured every second.
-25
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60