Whale oil was used in automobile transmissions as late as 1973.
56
The United States produces enough plastic film annually to cover the entire state of Texas.
13
Energy is being wasted if a toaster is left plugged in after use.
21
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Any modern jet is capable of breaking the sound barrier.
34
Sony researchers have developed a refrigerator that only opens when you smile.
9
The first alarm clock could only ring at 4 a.m.
120