Researchers have made a remarkable discovery about a population of white-faced capuchin monkeys in Panama. These intelligent primates have entered the Stone Age, using stone tools to break nuts and shellfish, making them the fourth type of primates to do so after humans, chimpanzees, and orangutans. The discovery is groundbreaking because it marks the first time that monkeys … [Read more...] about White-Faced Capuchin Monkeys in Panama Enter the Stone Age, Using Stone Tools for Nuts and Shellfish