The Japan Association for Quaternary Research (JAQUA) and the Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology (AIST), celebrated their 50th and 125th anniversaries, respectively, with an international symposium entitled 'Quaternary Environmental Changes and Humans in Asia and the Western Pacific', November 19-22, 2007, in Tsukuba, Japan. This volume represents the papers presented at the session Environmental Changes and Human Occupation in North and East Asia during OIS 3 and OIS 2, focusing on the correlation between environmental changes and human activities among Palaeolithic sites in North and East Asia.