A small airplane can fly backwards.
75
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
In the early 1960's, Porsche commercially manufactured farm tractors.
24
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The electric chair was invented by a dentist!
122