The co-author of "Sex at Dawn," Christopher Ryan explores the prehistoric roots of human sexuality.

Why you should listen

In the fascinating book Sex at Dawn, Christopher Ryan and co-author Cacilda Jethá, MD, explore how humans' prehistoric promiscuity (perhaps similar to the bonobos') may have influenced our current attitudes toward pair-bonding, monogamy and long-lasting passion. Their thesis draws on evidence from anthropology, archeology, primatology, anatomy and psychosexuality.

As a psychologist, Ryan’s research focuses on trying to distinguish the human from the cultural. His book, he hopes, is "pointing toward a more optimistic future illuminated by our innate capacities for love, cooperation and generosity."

What others say

[Sex at Dawn] helps put the ‘human’ back in ‘human sexuality.’
AASECT (American Association of Sexuality Educators, Counselors and Therapists)

Christopher Ryan’s TED Talk

More news and ideas from Christopher Ryan