WASHINGTON (AP) - Eat less, live longer? It seems to work for monkeys: A 20-year study found cutting calories by almost a third slowed their aging and fended off death. This is not about a quick diet to shed a few pounds. Scientists have long known they could increase the lifespan of mice and more primitive creatures—worms, flies—with deep, long-term cuts in what should be normal consumption. Now comes the first evidence that it delays the diseases of aging in primates, too—rhesus monkeys living at the Wisconsin National Primate Center. Researchers reported their study Friday in the journal Science. What...