Car airbags kill 1 person for every 22 lives that they save.
80
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
A small airplane can fly backwards.
75
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Sony researchers have developed a refrigerator that only opens when you smile.
9