Roberto Iacono Sør-Trøndelag University College (HiST) & Norwegian University of Science and Technology (NTNU)   Postboks 2320 Trondheim, 7004 Norge   roberto.iacono@hist.no             JEL Areas: H3 : Fiscal Policies and Behavior of Economic Agents: General Q3 : Nonrenewable Resources and Conservation: General