Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7
Castor oil is used as a lubricant in jet planes.
-5
The first alarm clock could only ring at 4 a.m.
120