This publication is a compilation of the keynote speeches, case presentations, and reports of the field visits conducted during the abovementioned seminar. Chapter Ⅰ presents two highly suggestive keynote speeches, describing the current challenges of “Sustainable Development” and “Education.” The case presentations in Chapter Ⅱ illustrate grassroots activities, well exemplifying ESD, which had been implemented even before the launch of UNDESD, to be followed by commentaries from ESD perspectives. Chapter Ⅲ is dedicated to describing, as an innovative approach to ESD, the “Asaza Project,” a strategy for establishing a sustainable society in the Lake Kasumigaura catchment basin in Japan.