The IRS processes more than 2 billion pieces of paper each year.
28
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
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
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
Attics were invented in Attica.
43
