Kleenex tissues were originally used as filters in gas masks.
46
The first alarm clock could only ring at 4 a.m.
120
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46