Sony researchers have developed a refrigerator that only opens when you smile.
9
More than a billion transistors are manufactured every second.
-25
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
The United States produces enough plastic film annually to cover the entire state of Texas.
13
A small airplane can fly backwards.
75
The IRS processes more than 2 billion pieces of paper each year.
28