Research interests focus on land use change and its effects on ecosystems and on human vulnerability. This work connects a computer-based simulation (e.g., agent-based modeling) of land-use-change processes with GIS and remote sensing based data on historical patterns of landscape change and social surveys. We are working to couple these models with GIS-based data and other models to evaluate consequences of change. We are also working to understand the ways in which land-use decisions are made. Collaborative research investigate the effects of spatial and social neighborhoods on the physical and social risks on human health.