This week we learn about the efforts to purify air in local venues. (Photo credit: Mike Stephen/WGN Radio)

Mike Stephen chats with Emily Dupree, founder of Clean Air Club, about the push to purify air in local venues, talks to Ron Haynes, the trombone player from Liquid Soul, about a wonderful upcoming performance, and discovers the Secret History of 1970s Illinois punk-rockers Max Load. To subscribe to the OTL podcast, please visit our Apple Podcasts Page, Spotify, or our RSS feed.