Coins usually survive in circulation for about 30 years.
66
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
Water, electricity, and gas has been free in Turkmenistan since 1991.
11
Jerry Seinfeld turned down US$5 million per episode, for 22 episodes, to continue the Seinfeld show for a tenth season.
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As of 2014, Apple has enough money to buy Facebook, or Netflix, Tesla, Twitter, Dropbox, Pandora, and Spotify combined - with $59 billion to spare!
9