Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
A small airplane can fly backwards.
75
The ball on top of a flagpole is called a 'truck'.
24
Castor oil is used as a lubricant in jet planes.
-5
Originally, Nintendo was a playing card manufacturer.
70