Chris Anderson talks with EconTalk host Russ Roberts about his next book project based on the idea that many delightful things in the world are increasingly free--internet-based email with infinite storage, on-line encyclopedias and even podcasts, to name just a few. Why is this trend happening? Is it restricted to the internet? Is there really any such thing as a free lunch? Is free a penny cheaper than a penny or a lot cheaper than that? The conversation also covers whether economics has anything to say about free.