"City" refers to the study of urban environments, including their social, economic, political, and spatial structures. Researchers in this area examine topics such as urban planning, gentrification, housing affordability, transportation, sustainability, and community development. They seek to understand the complexities of city life and the challenges faced by urban populations, as well as potential solutions to promote more equitable and sustainable cities. City research often involves interdisciplinary collaboration and can have significant implications for policy-making and urban development strategies.