1. Princeton Environmental Institute, Princeton University, Princeton, New Jersey 08544;
2. Woodrow Wilson School of Public and International Affairs, Princeton University, Princeton, New Jersey 08540;
3. Department of Geosciences, Princeton University, Princeton, New Jersey 08544
4. Centre for Policy Research, New Delhi 110021, India;
5. Department of International Studies, Indiana University, Bloomington, Indiana 47405;
6. Department of Environmental Studies, New York University, New York, NY 10003;