Dirty money 2: Expect traces of BPA

Cross contamination from store receipts is suggested as likely source of taint

By Janet Raloff, 12:05 PM December 8, 2010

A fourth small study since June has pointed to an apparent widespread presence of hormone-mimicking bisphenol A in cash-register receipts. Like a Swiss paper last July, the new study found that the potentially toxic chemical can rub off of receipts and onto our fingers. Where the December 8 report breaks new ground is in looking for  — and finding — BPA on dollar bills.

Indeed, the pollutant showed up on 21 of the 22 bucks tested. And the clean dollar? It appeared quite new, suggesting t...

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