Out of Eden Walk: An eerie walk through Japanese ghost towns

National Geographic Explorer Paul Salopek's walks through the countryside of Japan have been unexpectedly lonely. That's because he's been trekking through a region undergoing depopulation. Host Marco Werman speaks with Salopek about his all-too-rare encounters with people on this stretch of his journey, as well as the difference between traveling through natural landscapes that are uninhabited and traveling through towns that once thrummed with life, gone quiet.