Sony researchers have developed a refrigerator that only opens when you smile.
9
Castor oil is used as a lubricant in jet planes.
-5
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Whale oil was used in automobile transmissions as late as 1973.
56
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Kleenex tissues were originally used as filters in gas masks.
46