In her capacity of Chair of the SDEWES International Scientific Committee, Maria da Graça Carvalho delivered an introductory address in the 8th Conference on the sustainable development of energy, water and environment systems. This took place in Dubrovnik from 22 to 27 of September,
Prof. Ivo Šlaus, President of the World Academy of Art and Science, Chair of the SDEWES Scientific Advisory Board, "Contemporary World and the Role of the World Academy of Art and Science" delivered as well an introductory address in this conference.