Originally, BMW was an airplane engine manufacturer.
69
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
More than a billion transistors are manufactured every second.
-25
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The electric chair was invented by a dentist!
122
The ball on top of a flagpole is called a 'truck'.
24
Kleenex tissues were originally used as filters in gas masks.
46