'MEdIES is the major educational and training tool of the Mediterranean Information Office for Environment, Culture and Sustainable Development. It is an initiative on Education for Sustainable Development (ESD), launched in Johannesburg during the World Summit on Sustainable Development (2002). It is being implemented through various educational activities in the Mediterranean countries. MEdIES aims to facilitate the educational community the elements to contribute to the implementation of Agenda 21, the Millennium Development Goals, as well as the recent Sustainable Development Goals (SDGs), through the application of innovative educational programmes. These are based on cross-cutting themes in the existing school-curricula e.g. freshwater, solid wastes, consumption, diet/food, etc. The role of students/learners as 'messengers for sustainability' to their communities is promoted. The exchange and close collaboration of countries of north and south in the Mediterranean allows the development of a methodological framework that could be further implemented in other regions of the world.'