Sony researchers have developed a refrigerator that only opens when you smile.
9
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
Kleenex tissues were originally used as filters in gas masks.
46
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
There are only 14 blimps in the world.
69