Many world cities are looking into nature-based solutions to increase resilience and liveability. These solutions include increasing the number of trees and enhancing tree canopy cover. However, cities often struggle to articulate the social and ecological benefits of these natural elements. Advances in urban social-ecological research are needed to understand the combined social and ecological benefits of urban nature. Experimentally measuring the ecological and social effects of urban nature loss can tell us a great deal about these benefits. This proposed session will be a dynamic exchange among researchers from different cities and disciplines on using innovative experimental approaches to understand the combined social and ecological benefits of urban nature, using examples from urban tree removal experiments.