Cereal for breakfast, salad for lunch, cookie for a snack? Chances are, you've eaten a GMO food today. They're found in 80% of packaged foods in the US and in crops such as corn, soy, zucchini ...

Two of the labels they increasingly look for are organic and non-GMO –- so much so that Costco has now become the largest retailer of organic foods in the United States. Yet, even after spending ...