October 14-26, 1977, in Tbilisi--now in the country (not state) of Georgia in what was once part of the USSR--there was the First Intergovernmental Conference on Environmental Education. Created by UNESCO (the United Nations Educational, Scientific and Cultural Organization), the Tbilisi conference was one of the first of its kind to place emphasis on educating others about the perseveration and improvement of the global environment to help develop balanced communities world wide.
While environmental education wasn't a new idea, this funneling of attention toward education and stewardship took root here in Tbilisi.
To learn a bit more about this blossoming of environmental education, check out these two videos from the North American Association of Environmental Education.
Learn even more about the history of environmental educations more by going through NAAEE's 5 part learning module about the History of EE.
Videos from https://youtu.be/7wzIKwyYXlw?si=z4J9JUv9l-EAXUrs and https://youtu.be/e1uCExDFAgI?si=_ob-4VkiDMDH6EcN, logo from https://naaee.org/, last image screenshot from https://eepro.naaee.org/learning/eelearn/eelearn-2-history-ee