Wow, this is really impressive. On a podcast called "Hardcore History," a fellow named Dan Carlin is doing a lengthy series on World War I. The episodes run between three and four hours each, and Carlin has done four of them so far, so listening to them is admittedly a time investment. I know little about Carlin, except that he also runs a political podcast called "Common Sense" and used to be a radio talk show host. These are incredibly thoughtful and informative, and they are absolutely gripping to listen to. I'm completely hooked. Here are the World War I episodes that have run so far.