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Stephen Hammer

Manager, Climate Policy

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Dr. Stephen Hammer is the Manager of Climate Policy for the World Bank Group (WBG). His team is responsible for shaping the WBG’s global perspective on climate change policy, mainstreaming climate change into Bank Group operations, and delivering specialized technical advisory services to clients. Prior to joining the global climate team, Dr. Hammer led the Bank’s work on cities and climate change issues, working extensively in Vietnam, Ethiopia, Romania, and Egypt. Between 2005 and 2013, he was a full-time member of the graduate faculty at the Massachusetts Institute of Technology (MIT) and Columbia University, where he focused on urban energy systems policy and technology and how climate change will affect different urban systems. While teaching in New York, Dr. Hammer served as an advisor to Mayor Michael Bloomberg’s highly regarded climate planning team developing the PlaNYC initiative. In 2007 he helped co-found and until 2012 served as co-Director of the Urban Climate Change Research Network (UCCRN), a global network of researchers examining climate change from an urban perspective. Dr. Hammer holds a Ph.D. from the London School of Economics, an M.P.P. from Harvard University, and a B.S. degree from University of California, Davis.