On Tuesday at Universidad Francisco Marroquin in Guatemala City I gave a lunchtime talk on "The Roaring Twenties and Austrian Business Cycle Theory," which is the subject of chapter 3 of my book-in-progress The Clash of Economic Ideas. Here is a 47-minute talking-head video. After lunch I gave a 10-minute interview on free banking and the financial crisis to Luis Figueroa of UFM, video available here.