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Why You Shouldn’t Put Your Money Where Your Mouth Is

 

By ROBERT LEE HOTZ
Wall Street Journal
April 18, 2014

Talk about dirty money: Scientists are discovering a surprising number of microbes living on cash.
 
In the first comprehensive study of the DNA on dollar bills, researchers at New York University’s Dirty Money Project found that currency is a medium of exchange for hundreds of different kinds of bacteria as bank notes pass from hand to hand.
 
By analyzing genetic material on $1 bills, the NYU researchers identified 3,000 types of bacteria in all—many times more than in previous studies that examined samples under a microscope. Even so, they could identify only about 20% of the non-human DNA they found because so many microorganisms haven’t yet been cataloged in genetic data banks.   READ MORE at WSJ
 

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