Denis Wood talks with host Ira Glass about the maps he's made of his own neighborhood, Boylan Heights in Raleigh, North Carolina. They include a traditional street locator map, a map of all the sewer and power lines under the earth's surface, a map of how light falls on the ground through the leaves of trees, a map of where all the Halloween pumpkins are each year, and a map of all the graffiti in the neighborhood.