The international symposium "Quaternary Environmental Changes and Humans in Asia and the Western Pacific" was held successfully in Tsukuba, Ibaraki Prefecture on November 19⊖ 22, 2007. The Japan Association for Quaternary Research jointly planned this symposium with National Institute of Advanced Industrial Science and Technology to commemorate the 50th anniversary of the establishment of the Japan Association for Quaternary Research and the 125th anniversary of the establishment of the

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... al Survey of Japan. The purposes of the symposium were to communicate scientific results of Quaternary research in Japan to the rest of the world and promote international cooperation on Quaternary studies in the East Asian region. The symposium was held over three days and included four keynote lectures by leading international researchers, and 36 oral and 61 poster presentations during six sector sessions, which covered relationships between environmental change and human migration. One hundred and forty three participants, including 35 from foreign countries, discussed recent topics in Quaternary research. Moreover, agreement to hold a regular Quaternary International workshop in Asia(Asian Conference on Quaternary Research)was obtained as a result of discussions among representatives of Asian countries.