Arctic apple slices (bottom) compared to traditional apple slices. (Credit: Okanagan Specialty Fruits) It's a small victory for fruit-salad enthusiasts: The U.S. Department of Agriculture last week approved genetically modified apples that don’t brown when exposed to air. The approval allows trees bearing this type of fruit, called Arctic apples, to be planted on U.S. soil and, once the FDA agrees, the produce could be sold in stores within a few years.