Three types of potatoes genetically engineered to resist the pathogen that caused the Irish potato famine are safe for the environment and safe to eat, federal officials announced. The approval by the U.S. Environmental Protection Agency and Food and Drug Administration late last week gives Idaho-based J.R. Simplot Co. permission to plant the potatoes this spring and sell them in the fall. The company said the potatoes contain only potato genes and that the resistance to late blight, the disease that caused the Irish potato famine, comes from an Argentine variety of potato that naturally produced a defense. There is no evidence that genetically modified organisms, known as GMOs, are unsafe to eat, but changing the genetic code of foods presents an ethical issue for some. McDonald’s declines to use Simplot’s genetically engineered potatoes for its French fries. More