1. Hubert H. Humphrey School of Public Affairs, University of Minnesota, Minneapolis, MN 55455, USA.
2. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355, USA.
3. Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY 10027, USA.
4. ICLEI–Local Governments for Sustainability, South Asia Secretariat, New Delhi 110020, India.