Tonight’s question, greetings, and banter here. (More)

Today Paul Krugman highlighted new research showing that economic mobility is more limited when sprawling suburbs strand the urban poor. Matthew Kahn offers more research supporting the Spatial Mismatch hypothesis, and Ed Kilgore discusses the opposition to solutions in the Atlanta area, including Tea Party Republicans who claim urban planning is a plot by Agenda 21. Even the National Review’s Reihan Salam agrees that Spatial Mismatch limits economic mobility. Is “The Big Sort” hardening our economic class lines?