Coins usually survive in circulation for about 30 years.
66
Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
13
American car horns beep in the tone of F.
66
There are more than 10 million bricks in the Empire State Building!
75
The worlds oldest piece of chewing gum is over 9000 years old!
122
The most expensive license plate is the number '1', bought by an Abu Dhabi businessman - costing a staggering $14.3 million!
3