Is Christianity Good for the World?

Has Christianity been a net positive or negative for humanity? If you wander into an online debate between an atheist and a Christian apologist, you may hear an enthusiastic discussion on just this topic, with the Christian arguing that Jesus' teachings led to the development of charity, hospitals, and orphanages - among other things. Are claims like that correct? Today, Dr. Bart Ehrman and I continue our discussion on the influence of Jesus' ethical teachings on the Western world, diving into just that question.