This document outlines a flexible framework for exploring discourses of sustainable development. It describes a research methodology that draws on Ulrich Beck's theory of reflexive modernity and risk society to examine sustainable development at both the global and local levels through two case studies. The first case study involves ethnographic research within the United Nations to analyze representations of sustainable development from different nations. The second examines a local carbon reduction project in Plymouth, England using mixed quantitative and qualitative methods. The methodology is informed by debates around realist and constructivist epistemologies of risk. It aims to develop a third perspective that acknowledges both social influences on risk perceptions and underlying responsibilities for actions and social change.