What foods power a walk around the globe?

You've got to try the local cuisine - that's the advice given to any traveler headed beyond their own borders. Food can be one of the most visceral and memorable aspects of any trip away from home. National Geographic Explorer Paul Salopek has been on a continuous trip away from home for almost 13 years. That means a lot of different types of eating. He tells Host Marco Werman about some of his most memorable meals.