Summary: <p>[2012-12-03 12:00:00] What first inspired humans to travel all the way around the earth and how does the history of such exploration still inspire us today? We’ll talk this hour with Joyce Chaplin, the James Duncan Phillips Professor of Early American History at Harvard University and author of the new book “Round About the Earth: Circumnavigation from Magellan to Orbit” (Simon & Schuster, 2012).</p>
