Affiliation: | a UCLA, Institute of the Environment, Department of Economics, Department of Public Policy, La Kretz Hall, Suite 300, Box 951496, Los Angeles, CA 90095, USA;b UCLA Department of Economics, Los Angeles, CA 90095-1477, USA;c UCLA Law School, Los Angeles, CA 90095-1476, USA;d National Bureau of Economic Research, 1050 Massachusetts Ave Cambridge, MA 2138, USA |