Arthur Lyon Dahl, PhD


Arthur Lyon DahlProfessor Arthur Lyon Dahl of Geneva, Switzerland (, has more than 40 years international experience in sustainable development and environment. He is President of the International Environment Forum (, a Baha’i-inspired organization for environment and sustainability, a partner in an international project on values-based indicators of education for sustainable development ( and, and a consultant on indicators to the World Bank. He teaches sustainability in several academic programmes and was a Visiting Professor at the University of Brighton, UK. He is a retired Deputy Assistant Executive Director of the United Nations Environment Programme (UNEP), and a consultant to international organizations and research programmes on environmental assessment, observing strategies, indicators of sustainability, coral reefs, biodiversity, islands (, environmental education, and social and economic development.

He holds an AB in Biological Sciences from Stanford University and a PhD in Biology from the University of California, Santa Barbara. A specialist on small islands and coral reefs, he spent many years in the South Pacific as Regional Ecological Advisor with the Pacific Commission (, and organized the Pacific Regional Environment Programme ( He represented the Baha’i International Community at the Stockholm Conference on the Human Environment (1972) and the Copenhagen Climate Change Conference (COP15) in 2009, was in the Secretariat of the 1992 Rio Earth Summit to prepare Agenda 21, the global action plan for sustainable development, and organized several parallel events at the World Summit on Sustainable Development (Johannesburg, 2002) and the UN Conference on Sustainable Development (Rio+20, 2012). In 2011-2012, he was co-coordinator of the UNEP Major Groups and Stakeholders Advisory Group on International Environmental Governance (