Kleenex tissues were originally used as filters in gas masks.
46
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
A small airplane can fly backwards.
75
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Originally, Nintendo was a playing card manufacturer.
70
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60