Shlomo (Solly) Angel is a Professor of City Planning at New York University's Marron Institute on Cities and the Urban Environment. 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. In 1973, he started a program in Human Settlements Planning and Development at the Asian Institute of Technology in Bangkok. He taught at the Institute from 1973 to 1983, while researching housing and urban development in the cities of East, South, and Southeast Asia. From the mid-80s to mid-90s, he worked as a housing and urban development consultant to UN-Habitat, the Asian Development Bank, and the Government of Thailand. In 2000, he published Housing Policy Matters, a comparative study of housing conditions and policies around the world. From 2000 onward, he prepared housing sector assessments of 11 Latin America and Caribbean countries for the IDB and the World Bank. Angel earned a bachelor’s degree in architecture and a doctorate in city and regional planning at the University of California, Berkeley.