Random mutations. Natural selection. Time. According to the neo-Darwinian conception of evolution, this is all it takes. But there's a problem. In fact, there are several. No one has been able to demonstrate this model in the lab. Random mutations are either neutral or fatal to the organisms in which they occur. But natural selection only works on traits that are already there. So how to the new traits get there? How does genetic mutation actually occur? As shown in lab experiments, it is...