Evil is a high hurdle for theists. Given the savagery of moral evil (what humans do to humans) and the horrors of natural evil (earthquakes, tsunamis, disease), how could an all-powerful and all-good God exist? Philosophers offer defenses (evil and God do not contradict) and theodicies (reasons why God allows evil). The problem is the sheer amount of evil. Robert Lawrence Kuhn interviews Michael Shermer, for CloserToTruth.com.