In the early 1960's, Porsche commercially manufactured farm tractors.
24
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The average car produces a pound of pollution every 25 miles!
18
Castor oil is used as a lubricant in jet planes.
-5
The United States produces enough plastic film annually to cover the entire state of Texas.
13
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