Why are there miles and miles of "unused" DNA inside every of our bodies? Why should a bee provide up its own chance to reproduce to help raise her sisters and brothers? Together with a prophet's clarity, Dawkins told us the answers from the perspective of molecules competing for limited space and resources to produce extra of their own kind. Drawing fascinating examples from each field of biology, he paved the way for a serious re-evaluation of evolution. He in addition introduced the concept of self-reproducing ideas, or memes, which (seemingly) use humans exclusively for their propagation. If we are puppets, he says, at least we can try to comprehend our strings. --Rob Lightner