Decision science is an interdisciplinary field that draws upon the behavioral and social sciences, among other disciplines. Our research is about helping people become more resilient to adverse events and build more sustainable communities to meet the challenge of the risks of global environmental change. In the face of increasing threats to our environment and health, people need to be equipped with relevant information and realistic options. Using a behavioral decision science analytical approach, our research aims to inform the design of interventions, policies and programs that help people make more informed decisions. This approach involves: formal analysis, characterizing the choices a fully rational actor would take; descriptive research, examining how people actually behave in those circumstances; intervention research, designed to bridge the gap between the normative ideal and the descriptive reality. Applying this approach requires continuing collaboration with substantive experts (e.g. engineers, natural scientists, physical scientists, policy experts) to ensure the accuracy of the analysis and the feasibility of interventions, with social scientists to create attractive interventions and evaluate their success, and with decision makers to create options that they might find attractive.