Water legend Ken Wright enlightens us on paleohydrology. Ken’s studies of how ancient cultures used water over the last quarter century have shed tremendous light on how those cultures engineered their water infrastructure and planned for their water resources. This is a fascinating episode for anyone who is interested in history and how ancient cultures like the Inka (read Charles C. Mann’s 1491 re not spelling it “Inca”), Anasazi, Roman, ancient Thai, and Middle Eastern cultures, interfaced with w