Book Review: Exploring the Biology of Friendship
Elizabeth Svoboda in Undark: On the Puerto Rican island of Cayo Santiago, it’s the monkeys, not the humans, who are in charge. Yet this palm-fringed haven — home to about 1,000 rhesus macaques—can feel strangely similar to a weekend watering hole or middle-school cafeteria. Among these gregarious macaques, cliques, best-friend pairs, and social climbers are all…