Energy is being wasted if a toaster is left plugged in after use.
21
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
In the early 1960's, Porsche commercially manufactured farm tractors.
24
Castor oil is used as a lubricant in jet planes.
-5
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
The United States produces enough plastic film annually to cover the entire state of Texas.
13