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
Mico headphones read your brainwaves and select music based on your state of mind.
7
Castor oil is used as a lubricant in jet planes.
-5
A small airplane can fly backwards.
75
The ball on top of a flagpole is called a 'truck'.
24
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27