While the iconic image of a happy, monogamous couple has endured for thousands of years, modern evolutionary biologists and anthropologists have recently discovered a much less romantic reality about human nature: humans are biologically inclined towards polygamy. Specifically, polygamy occurs in two separate forms. Polygyny, or a man mating with multiple women, is by far the more common occurrence, while polyandry, a woman mating with multiple men, is much rarer and typically occurs only under very specific (and covert) circumstances. In Out of Eden, evolutionary biologist David P. Barash sets out to dispel one of the most prevalent myths of modern culture, that mutually assured monogamy is the default setting for human beings. Though the book will inevitably generate controversy, Barash does not argue that "biology is destiny," but rather offers the hopeful notion that people have the capacity to overcome their biological inclinations and predispositions. With examples from both evolutionary biology and human history,Out of Eden demonstrates the ways in which human traits can be understood as resulting from our shared history of polygyny, and will shed light on the more modest but nonetheless real and otherwise perplexing reality of our natures.