First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Any modern jet is capable of breaking the sound barrier.
34
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Castor oil is used as a lubricant in jet planes.
-5
In the early 1960's, Porsche commercially manufactured farm tractors.
24
The first alarm clock could only ring at 4 a.m.
120