Shlomo (Solly) Angel is a Professor of City Planning at the Marron Institute at the New York University (NYU). He leads the NYU Urban Expansion based at the Marron Institute and the NYU Stern Urbanization Project. Angel is an expert on urban development policy, having advised the United Nations, the World Bank, and the Inter-American Development Bank (IDB). He currently focuses on documenting and planning for urban expansion in the developing world. Angel earned a bachelor’s degree in architecture and a doctorate in city and regional planning at the University of California, Berkeley.