Castor oil is used as a lubricant in jet planes.
-5
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The cigarette lighter was invented before the match.
210
Attics were invented in Attica.
43