On today's Your Call, we're talking about food labels like "organic" and "fair trade.” Studies show that sales increase by 10 percent because of food labels. But what do they mean exactly? How are these labels enforced in the US and abroad? As the number of labels increase, how should we measure certification? And how does a label change the way you think about and buy your food? Join the conversation on the next Your Call, with Hana Baba and you.