There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The life boat was patented in 1845!
29
The electric chair was invented by a dentist!
122
Jumbo jets use 4,000 gallons of fuel to take off.
19
The ball on top of a flagpole is called a 'truck'.
24
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
A small airplane can fly backwards.
75