The Philippine Environmental Science Association (PESA) is a consortium of different higher education institutions originally composed of the University of the Philippines Los Baños (UPLB), University of the Philippines Diliman (UPD), Ateneo de Manila University (ADMU), and De La Salle University (DLSU). PESA was organized to strengthen the value of environmental science as an interdisciplinary fled in analyzing and providing solutions to perennial environmental problems of the country. This is in response to the need for a proactive stance to continuously upgrade and advance the level of environmental science research and action to address the various environmental problems affecting the country. 

One of the activities to achieve PESA’s goals is the conduct of the Annual National Conference on Environmental Science. The annual conference provides opportunities for research updates and discussions on key environmental agenda that include climate change, environmental impact assessment protocols, biodiversity and conservation, environment-resources-population dynamics, disaster risk management, and best practices and green solutions, among many others. The annual meetings gathers members of the academe, industry, students, research institutions, government agencies, and private organizations for a two-day meeting for an active exchange of ideas.