This paper has its origins in the presentation made by the author at the II International Conference on Environmental Education organized by the Center for University Extension and Environmental Dissemination of Galicia, at its headquarters in the Castle of Santa Cruz in April 2018. The objectives of these Conferences were to create a framework for reflection on the history and challenges of Environmental Education as a tool to contribute to sustainability and improvement of environmental issues, reflect on the state and problems of Environmental Education both in Galicia and in other countries with cultural and linguistic affinities and strengthen international cooperation to increase the effectiveness of the use of Environmental Education as a tool for social intervention. In this context, the author makes a historical reading of the Environmental Education Congresses for the lusophone countries and Galicia, for the need to contribute to the history of these congresses from a biographical perspective and help to understand the real origin of these congresses. The author of the article points out the relevance of this I Congress of Environmental Education of the Lusophone Countries and Galicia, where for the first time, it is possible to meet in Santiago de Compostela, representatives of all lusophone countries, including East Timor. This was made possible thanks to the involvement of many institutions and governments, Environmental Education experts from many countries and CEIDA’s effort to incorporate intellectuals and experts from other disciplines with the intention of enriching the discourse of social transformation. After describing the history of this first Congress and its repercussions, including the training of the managers of protected areas in the lusophone african continent and East Timor, he continues his reading to the present day, where this Congress has managed to consolidate behind the governments of the different countries, also showing how the Lusophone Network has become a reference in Environmental Education in this geographical, cultural and linguistic area. The paper concludes with some recommendations on the need for the Lusophone Congresses on Environmental Education to be a place for the creation of collective intelligence and support for socioenvironmental intervention.