In the early 1960's, Porsche commercially manufactured farm tractors.
24
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
The first alarm clock could only ring at 4 a.m.
120
The United States produces enough plastic film annually to cover the entire state of Texas.
13