ECONOMICS - Laundering money—literally—could save billions of dollars

A dollar bill gets around, passing from hand to hand, falling on streets and sidewalks, eventually getting so grimy that a bank machine flags it and sends it to the shredder. Rather than destroying it, scientists have developed a new way to clean paper money to prolong its life. The research, which appears in the ACS journal Industrial & Engineering Chemistry Research, could save billions and minimize the environmental impact of banknote disp ...

http://phys.org/news/2014-01-laundering-moneyliterallycould-billions-d