Using Stable Isotopes to Identify the Geographic Origin of Food

Consumers are increasingly interested in knowing where their food comes from and what exactly is in it. Unfortunately, food labels are not always accurate. In fact, some products are mislabeled intentionally in order to garner a higher price in the marketplace. Can anything be done to determine if a product really is what it says it is? How can you tell if that wedge of Parmesan cheese was really made in Parma, Italy? [Read more…]