The redevelopment of riverfronts has been one of the drivers of urban revitalization in many U.S. cities. This week's guests are working to bring new life to two of those riverfronts.

Benny Lendermon is leading the effort to bring Memphians to the Mississippi River. Benny is president of the Memphis Riverfront Development Corporation, a public-private partnership charged with making the stretch of the Mississippi River at the city's front doorstep more people-friendly.

Cathy Hudzik is Mayor Richard Daley's point person for building a river-walk along the sometimes-forgotten Chicago River. Her responsibilities include efforts to improve water quality, increase public access, protect wildlife habitat, and enhance neighborhood life along the Chicago River.

We talk to them about their progress and the challenges they still face today, this week on Smart City.