Christopher Ryan is the New York Times bestselling author of Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships and Civilized to Death: The Price of Progress, which have each been translated into over twenty languages.

Chris has spoken around the world, including at TED, The Festival of Dangerous Ideas, and the Einstein Forum. Chris has hosted “Tangentially Speaking,” his podcast, with over 30 million downloads.

“Sex at Dawn is the most important book on human sexuality since Kinsey unleashed Sexual Behavior in the Human Male on the American public in 1948.”

- Dan Savage, syndicated advice columnist