Jacob Shell recently published his first book titled Transportation and Revolt: Pigeons, Mules, Canals, and the Vanishing Geographies of Subversive Mobility. The book links physical geography with the politics of mobility and explores how subversive elements in society used animals across harsh terrains to secretly transport goods and messages. Shell shows how these subversive activities were curtailed by the shooting of pigeons and the ceasing of certain kinds of transportation infrastructure. Shell is currently an assistant professor at Temple University. His research employs critical theories of power and resistance to look at the evolving geographies of transportation and mobility systems.