Author

Books by Christopher Ryan

Christopher Ryan holds a PhD in psychology from Saybrook University and is the co-author, with Cacilda Jetha, of Sex at Dawn: The Prehistoric Origins of Modern Sexuality (2010), which became an unexpected bestseller and sparked significant public debate about evolutionary psychology and human sexuality. Civilized to Death, published in 2019, extends the argument of Sex at Dawn into a broader critique of civilization and its costs. Ryan has also hosted a podcast called Tangentially Speaking and writes widely on psychology, evolution, and culture. He lives between the United States and Spain.