On the Edge, Timbuktu, Part 2
Radio Expeditions: Researcher Heads to Sahara to Study Vanishing Cultures
An ethnobotanist travels into the Sahara to document the vanishing customs of a desert people. In the second of a four-part National Geographic Radio Expedition, NPR's Alex Chadwick follows Wade Davis to Timbuktu, once a medieval intellectual center and a major center for trade.