Bisphenol-A (BPA) is a chemical that is used in a wide variety of items—rigid plastics, lining in canned food and beverage products, and even thermal paper used for receipts. It has been subject to hundreds of studies over the past few decades, making it one of the most studied chemicals in wide use today. BPA is currently categorized as “general recognized as safe” by the U.S. Food and Drug Administration (FDA). The FDA released two of the largest and most rigorous studies of BPA in early 2014 which, according to Daniel Doerge, a research chemist with the FDA's National Center for...