As the U.S. government debuts a new $100 bill on Apr. 21 this one will be redesigned to ward against digital copying and counterfeiting TIME traces the history of banknotes from ancient China to modern cocaine dens. Here are 10 tidbits about money that may surprise you
Dirty Money
All money, it turns out, could stand to be laundered: the stuff is filthy. Studies show that a solid majority of U.S. bills are contaminated by cocaine. Drug traffickers often use co*ke-sullied hands to move cash, and many users roll bills into sniffing straws; the brushes and rollers in ATMs may distribute the nose candy through the rest of the money supply.
Also found on bills: fecal matter. A 2002 report in the Southern Medical Journal showed found pathogens including staphylococcus on 94% of dollar bills tested. Paper money can reportedly carry more germs than a household toilet. And bills are a hospitable environment for gross microbes: viruses and bacteria can live on most surfaces for about 48 hours, but paper money can reportedly transport a live flu virus for up to 17 days. It's enough to make you switch to credit.
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