The Evolution of the God Gene - NYTimes.com

The Evolution of the God Gene - NYTimes.com: "But group selection has recently gained two powerful champions, the biologists David Sloan Wilson and Edward O. Wilson, who argued that two special circumstances in recent human evolution would have given group selection much more of an edge than usual. One is the highly egalitarian nature of hunter-gatherer societies, which makes everyone behave alike and gives individual altruists a better chance of passing on their genes. The other is intense warfare between groups, which enhances group-level selection in favor of community-benefiting behaviors such as altruism and religion."