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
The first alarm clock could only ring at 4 a.m.
120
All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2
Originally, Nintendo was a playing card manufacturer.
70
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
A small airplane can fly backwards.
75
The electric chair was invented by a dentist!
122