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Draft paper written in 2013 by Jonathan Fink, Vice President for Research and Strategic Partnerships and Professor of Geology, Portland State University.Geoengineering typically refers to planetary, or perhaps regional scale technological responses to the deleterious effects of human induced climate change. This paper explores the idea that urbanisation could constitute a successful form of distributed, bottom up geoengineering. Through redesign of existing urban areas and creation of more efficient new ones, per capita energy consumption and CO2 generation could potentially be radically reduced. However, implementing these changes requires a combination of new technology and altered behaviour, coordination across sectors and geography, and unusually strong political action. In particular, civil engineers and economists would need to create methods for determining the most cost effective ways for each city to become more resource efficient.Urban redesign would carry lower risk and offer more ancillary benefits than most other geoengineering schemes. Given global warming’s potentially catastrophic consequences, engineers, planners and politicians need to calculate how quickly and extensively cities could shift to become positive forces for climate repairManuscript Draft full text  available on line http://www.pdx.edu/research/sites/www.pdx.edu.research/files/Geoengineering%20Cities%20to%20Stabilise%20Climate.pdf (accessed 23 July 2013)