Tidball and colleagues recently summarized the results of the funding they received from the Atkinson Center for a Sustainable Future (ACSF) at a topical lunch. The focus was on recent work on urban sustainability and biodiversity conservation that was presented, discussed and launched at Rio +20 in June of 2012. The goal of this ACSF funded work has been to develop an inter-disciplinary research program focusing on sustainability, biodiversity, social-ecological systems resilience, and ecosystem services in cities. Recognizing that cities are now the dominant human habitat, the project has endeavored to address a gap left by other global sustainability initiatives, such as the Millennium Ecosystem Assessment, which pay only minimal attention to urban ecosystems. This applied research and work at the science-to-policy interface has contributed significantly to the launch of the URBIS global urban biosphere policy initiative, which has been endorsed by several international agreements and was launched at the Rio +20 UN Conference on Sustainable Development. Click here for the full report.