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.