Whale oil was used in automobile transmissions as late as 1973.
56
More than a billion transistors are manufactured every second.
-25
The first alarm clock could only ring at 4 a.m.
120
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Energy is being wasted if a toaster is left plugged in after use.
21
Mico headphones read your brainwaves and select music based on your state of mind.
7
The average car produces a pound of pollution every 25 miles!
18