This week we’re joined by Jonathan Barnett, emeritus Professor of Practice in City and Regional Planning at the University of Pennsylvania. We talk about his new book Designing the Megaregion: Meeting Urban Challenges at a New Scale.  Jonathan chats about where the idea of Megaregions came from, Ian McHarg and environmental planning within the landscape, the importance of transit connections in these regions, and how we can coordinate Megaregions administratively.