The IRS processes more than 2 billion pieces of paper each year.
28
Castor oil is used as a lubricant in jet planes.
-5
Kleenex tissues were originally used as filters in gas masks.
46
More than a billion transistors are manufactured every second.
-25
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47