Carl Abbott is Professor Emeritus of Urban Studies and Planning at Portland State University and the author of Imagining Urban Futures: Cities in Science Fiction and What We Might Learn from Them. Other publications include Frontiers Past and Future: Science Fiction and the American West (2006); Imagined Frontiers (2015), which includes essays on Kim Stanley Robinson and on Firefly; and prize-winning books on the history of American cities and the American West.