The document discusses implementing a "City Knowledge" approach in the London Borough of Merton to help the borough achieve its target of reducing carbon dioxide emissions by 15% by 2015. It outlines Merton's current approaches to reducing emissions from buildings and promoting low-carbon solutions. It then introduces City Knowledge as an emergent information infrastructure that can help overcome challenges around data management and move municipalities from "hunter-gatherers" of data to "farmers" of information. Key aspects of City Knowledge discussed include organizing existing municipal data, closing data loops, and leveraging geographic indexing and a web-based system called LOUIS.