The three co-editors are experts in urban geography, city planning, urban morphology, social exclusion, and segregation and inequity. They are currently pursuing research about change in European cities and urban neighborhoods with the most intractable challenges. Daniel Baldwin Hess is Professor and Chairperson in the Department of Urban and Regional Planning at the University at Buffalo, State University of New York. He is also Visiting Scholar and former Director of the Centre for Migration and Urban Studies at the University of Tartu, Estonia, where he was a Marie Skłodowska-Curie Fellow. His research contributes new pathways for understanding the complex socio-economic and ethnic landscape of cities and spatial inequalities. He is a former Fulbright Scholar at Tallinn University of Technology in Estonia and winner of a National Endowment for the Humanities Fellowship. Tiit Tammaru is Professor in the Centre for Migration and Studies at the University of Tartu, in Estonia. He is the lead editor of Socio-economic segregation in European capital cities: east meets west (Routledge, 2016). Tammaru is also the Head of the Centre for Estonian Diaspora Studies and has received both the Estonian Science Award in social sciences in 2010 and the Natural Sciences Award in 2011. His fields of interest include socio-spatial inequality, geographical changes in urban regions, governing urban diversity and social mobility. Maarten van Ham is Professor of Urban Renewal and Head of the Neighbourhood Change and Housing Research Group at OTB - Research for the Built Environment at Delft University of Technology, in the Netherlands. Van Ham is a population geographer with a background in economic and urban geography. He is a Research Fellow at IZA (a large economic research institute in Germany) and Professor of Geography at the University of St. Andrews in Scotland. Since2014, he is head of the ERC project DEPRIVEDHOODS, a 5-year research project on neighbourhood effects