This week on Smart City, the wave of foreclosures hitting many American cities are challenging many communities to wonder, “What’s next?” Can these neighborhoods be revived? And if so, what will it take? Those are questions we’ll ask Alan Mallach whose new report on Managing Neighborhood Change comes just at the time when many communities are needing that help.

And we’ll also talk about a subject that may at first seem far removed from cities, but actually is at their center. Our guest is Dr. Donald Johanson, a paleo-anthropologist whose discovery 30 years ago of Lucy set him on a life-long study of human evolution.

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This week on Smart City, you’ve heard of boycotts to convince people not to buy targeted products or at targeted places. But when is the last time you’ve heard of organizing purchasing to get companies to do the right thing? That’s the approach of CarrotMob. Based in San Francisco, CarrotMob creator Brent Schulkin is challenging companies to behave in environmentally responsible ways and get rewarded with purchases by people who care.

And we’ll talk about eight emerging trends affecting cities with Wakako Takagi and Tisha Johnson.

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