Peter Gray, Ph.D., is a TED Talks speaker and research professor at Boston College, is the author of Free to Learn: Why Unleashing the Instinct to Play Will Make Our Children Happier, More Self-Reliant, and Better Students for Life and Psychology, a college textbook now in its 7th edition. He has conducted and published research in comparative, evolutionary, developmental, and educational psychology. He did his undergraduate study at Columbia University and earned a Ph.D. in biological sciences at Rockefeller University. His current research and writing focus primarily on children’s natural ways of learning and the life-long value of play. His own play includes his research and writing, long-distance bicycling, kayaking, back-woods skiing, and vegetable gardening.