There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
A small airplane can fly backwards.
75
Kleenex tissues were originally used as filters in gas masks.
46
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Castor oil is used as a lubricant in jet planes.
-5