Francesca Russello Ammon is Associate Professor of City & Regional Planning and Historic Preservation at the University of Pennsylvania. She studies the history of the built environment, focusing on the social, material, and cultural life of American cities from World War II to the present. She is the author of Bulldozer: Demolition and Clearance of the Postwar Landscape (Yale University Press, 2016), which received the Lewis Mumford Prize for best book in American planning history.