There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
The cigarette lighter was invented before the match.
210
The electric chair was invented by a dentist!
122
The ball on top of a flagpole is called a 'truck'.
24
