This document summarizes the development of Bristol's sustainability movement from the 1970s to present day. It describes how citizen groups came together in the 1970s to oppose an outer circuit road project, leading to the founding of organizations like Bristol Friends of the Earth and Cyclebag (now Sustrans). These groups pioneered recycling, energy efficiency, and active transportation initiatives. The document also notes the importance of cross-sector collaboration and how youth programs and local government support helped sustainability organizations gain traction in Bristol. It concludes by reflecting on how Bristol became the UK's first Transition City and a 2015 European Green Capital.