In 2006, scientist Richard Dawkins published a blockbuster bestseller, The God Delusion. This atheist manifesto sparked a furious reaction from believers, who have responded with numerous books of their own. By pitting science against religion, however, this debate overlooks what science can tell us about religion. According to evolutionary psychologist Matt J. Rossano, what science reveals is that religion made us human.

In Supernatural Selection, Rossano presents an evolutionary history of religion. Neither an apologist for religion nor a religion-basher, he draws...