Store receipts said to contain toxic chemical BPA

Cash register receipts issued by several major retailers -- Walmart, McDonalds, Safeway, even Whole Foods -- contain the controversial plastic chemical bisphenol A, adding to an increasing number of ways the substance comes in contact with the public, says an environmental advocacy group.

Bisphenol A, or BPA, has made headlines due to its frequent use in food and beverage packaging and its potential risk for causing cancer. The new study by the non-profit Environmental Working Group highlights BPA presence in many major retailers' store receipts and its likelihood to stick to the skin of people who handle them.