Saving Darwin explores the history of the controversy that swirls around the theory of evolution and shows why—and how—it is possible to believe in both God and the latest findings of evolutionary biology.

As Giberson puts it, "I wrote Saving Darwin to build a bit of a bridge between two cultures at odds with each other: the scientific community and American evangelicalism. I have lived in both cultures and am dismayed at how far apart they are. In this climate of misunderstanding the ‘naturalism’ of science looks anti-religious and the anti-evolutionism of evangelicalism looks uninformed. I hope to illuminate the tension that divides these two communities and to contribute to improved communications.”

In a recent interview about his book in the online magazine Salon, Giberson emphasizes that "There's an important distinction between a theory that tells us the way the world is and a theory that tells us the way it ought to be." He has also posted a controversial and much-discussed essay on Salon, titled "What's Wrong with Science as Religion."