Sony researchers have developed a refrigerator that only opens when you smile.
9
Energy is being wasted if a toaster is left plugged in after use.
21
Originally, Nintendo was a playing card manufacturer.
70
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Whale oil was used in automobile transmissions as late as 1973.
56
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12