Jiakun Liu is a researcher at the Department of Spatial Economics, Vrije Universiteit Amsterdam. My current research focuses on modeling 15-minute city scenarios, integrating land use and travel behavior to support sustainable urban and transport planning. I got my PhD in the Department of Human Geography and Spatial Planning at Utrecht University, where I explored the intersection of transport and health geography. My research examines the dynamic relationships between travel behavior, environments, and well-being. Also, I am interested in understanding the health outcomes (including mental health) of travel and their implications on travel behavior. My work is driven by a commitment to understanding how urban and transport systems can be designed to enhance quality of life, promote sustainability, and foster healthier communities. I am passionate about bridging research and practice to address real-world challenges in urban planning and mobility.