Just when you think you know what makes cities tick, something changes - population, the economy, technology. So the question, what makes cities work, never gets old. And it's never been more important.

Ken Corey and Mark Wilson have taken a deep look at the global knowledge economy, how it is reshaping cities, and how urban planners ought to respond. Ken and Mark are co-authors of Urban and Regional Technology Planning: Planning Practice in the Global Knowledge Economy.

Jay Walljasper takes a more down home approach, urging all of us to get out and "do it ourselves" when it comes to improving the places we live. Jay is author of The Great Neighborhood Book: A Do It Yourself Guide to Placemaking.

We'll talk with them about changes global and local affecting our community this week on Smart City.