Shagun Mehrotra is Managing Director of Climate and Cities, an international policy advisor facility at Columbia University»s Center for Climate Systems Research. As a Columbia University Faculty Fellow, he provides research and policy advice focusing on infrastructure economics and finance, development economics and poverty reduction in slums. He has developed a comprehensive framework for city climate risk assessment that combines hazards, vulnerabilities and agency. Previously, Shagun was on the staff of the World Bank, leading infrastructure reform of state-owned utilities in Africa. Over the last decade, his advice has been sought by national and local governments in East Africa, South-East Asia, China and India, as well as the United Nations» Human Development Report, the Bill and Melinda Gates Foundation, and the Columbia Earth Institute. The President of India recently launched Shagun»s co-authored book Bankruptcy to Billions: How the Indian Railways Transformed, with a foreword by the Prime Minister of India.