Play-Doh was first manufactured as a wallpaper cleaner.
122
The most expensive license plate is the number '1', bought by an Abu Dhabi businessman - costing a staggering $14.3 million!
3
Japanese engineers were asked to redesign the front end of the Bullet Train because it carried enough speed to create a sonic boom whenever it exited a tunnel. Residents could feel the blast from miles away.
11
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
There was once an undersea post office in the Bahamas.
241
The key to happiness is spending your money on experiences rather than possessions, according to studies.
21
