Saskia Sassen is a prominent sociologist known for her work on globalization, urban studies, and migration. She is a professor at Columbia University and has authored several influential books, including "The Global City," which explores the role of major cities in the global economy. Her research focuses on how economic and social processes shape urban environments and the lives of individuals within them. Sassen's contributions have made her a key figure in understanding the complexities of modern cities and their interconnectedness. She has also examined issues related to transnationalism and the impact of technology on society. Her insights continue to influence discussions on urban policy and global dynamics.