Alternate feeds

• https://www.omnycontent.com/d/playlist/4b5f9d6d-9214-48cb-8455-a73200038129/1a17f2b1-b822-4ee5-876a-a92b00878412/23a93edd-2172-469f-b0fb-a92b00878412/podcast.rss
• http://feeds.feedburner.com/GeoffCalkinsOnDemand