Valdemar J. Rodrigues (PhD, MSc, BSc) - Valdemar José Correia Barbosa Rodrigues, born in Alcobaça, Portugal, November 6th 1965 - is a retired environmental engineer and scientist with 30 years of experience in the fields of environmental management & assessment, energy economics, renewable energy sources and environmental policy & planning. He holds a B.Sc. and a Ph.D. in Environmental Engineering from Universidade Nova de Lisboa - his "alma mater" - , and a M.Sc. in Ecological Modeling of Sea Resources from Instituto Superior Técnico, former Technical University of Lisbon. He developed, between 1991 and 2006, a research career as project manager and, lately, as associate researcher, at CEEETA - Research Centre in Economics of Energy, Transport and Environment, in Lisbon. There he was coordinator or member of project teams for evaluating externalities of energy fuel cycles for the generation of electricity in Portugal and Spain, and the production of biofuels (EC ExternE Project, BIOPOR, BIOSTR, etc.). He was also member and coordinator of the Portuguese national teams of SEER-I (Institutional adjustments to sustainable development strategies) and SEER-II (sustainability, locality and democracy) European funded international projects (DGXII), amongst other projects concerning the environmental socio-economic dimensions of sustainability. He was assistant, auxiliary and associate professor at Universidade Lusófona in Lisbon between the years 2000 and 2016, where he was also director, between 2008 and 2013, of the Bsc. and MSc. graduation programmes in environmental engineering. His "career" of "university professor" and, later on, of "adjunct professor" at ISEC (a polytechnic institute in Lisbon)) between 2016 and 2023, has quite probably reached its end.