This is an interesting and frustrating article describing the efforts by environmental groups to ban thermal paper with BPA in it. The argument is that thermal paper receipts touch money, contaminating the paper money supply such that people will have BPA pass into their bloodstream by dermal absorption from money.
Of course, this is only scary if you have absolutely no common sense about doses. The exposures are simply absurdly small, from a chemical that it is not even clear has long-term harms (the article talks about nano-grams of exposure -- when you start talking nano-grams, you might as well just count individual molecules). And, as an added bonus, its ban in thermal paper simply pushes manufacturers to use chemicals that are not necesarily safer, just less studied and without the "BPA" name that the media has tarnished so badly. Incredibly, at least one state, Connecticut, actually followed through on this useless ban scheme.
You don't have to convince me money is dirty -- I am sure any bill in my pocket is crawling with viruses and bacteria and other weird stuff. Carrying around money is like toting around pieces of clothing someone else has worn for 6 months without washing. So I am sure the bills in my pocket are icky, but to get worked up about BPA rubbed off from my last Home Depot receipt is just insane.