Sex at Dawn: The Prehistoric Origins of Modern Sexuality

Author: Christopher Ryan and Cacilda Jethá
Hardcover: 416 pages
Publisher: Harper; 1 edition (June 29, 2010)

Forget what you think you know about the origin of species. Sex at Dawn sets out to prove that our prehistoric ancestors were happy and healthy, thanks in no small part to lots of egalitarian, polyamorous, noisy group sex.

Product Description
Since Darwin's day, we've been told that sexual monogamy comes naturally to our species. Mainstream science--as well as religious and cultural institutions--has maintained that men and women evolved in families in which a man's possessions and protection were exchanged for a woman's fertility and fidelity. But this narrative is collapsing. Fewer and fewer couples are getting married, and divorce rates keep climbing as adultery and flagging libido drag down even seemingly solid marriages...