Sony researchers have developed a refrigerator that only opens when you smile.
9
The first alarm clock could only ring at 4 a.m.
120
Any modern jet is capable of breaking the sound barrier.
34
Attics were invented in Attica.
43
Originally, Nintendo was a playing card manufacturer.
70
About 39,000 gallons of water are used to produce the average car!
14
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4