Castor oil is used as a lubricant in jet planes.
-5
Whale oil was used in automobile transmissions as late as 1973.
56
The average car produces a pound of pollution every 25 miles!
18
The electric chair was invented by a dentist!
122
More than a billion transistors are manufactured every second.
-25
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4