Jon Strand is a Senior Economist at the Inter-American Development Bank is Washington, D.C., and Professor of Economics at the University of Oslo. Jon Strand is a Senior Economist at the Inter-American Development Bank is Washington, D.C., and Professor of Economics at the University of Oslo. Ian Parry is Principal Environmental Fiscal Policy Expert in the IMF's Fiscal Affairs Department. Herman Vollebergh is Senior Research Fellow at PBL Netherlands Environmental Assessment Agency and Professor in Economics and Environmental Policy at Tilburg University. Jon Strand is a Senior Economist at the Inter-American Development Bank is Washington, D.C., and Professor of Economics at the University of Oslo.