Kleenex tissues were originally used as filters in gas masks.
46
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
In the early 1960's, Porsche commercially manufactured farm tractors.
24
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Originally, Nintendo was a playing card manufacturer.
70
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Jumbo jets use 4,000 gallons of fuel to take off.
19
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4