Yoshinori Ishii is Professor Emeritus at the University of Tokyo, President of the “Mottainai Society” and a Doctor of Engineering. He graduated from the University of Tokyo Faculty of Science, Department of Physics in 1955. He worked for Teikoku Oil Co., Ltd., Japan Petroleum Development Corporation, etc. for 16 years and at the University of Tokyo’s Faculty of Engineering he was Assistant Professor, and Professor in the Department of Resource Development Engineering for 23 years. Retired in 1993, he became Professor Emeritus. He was Deputy Director General of the National Institute of Environmental Studies and then Director General from 1996-1998 and later became Special Councilor and Professor at Toyama University of International Studies. He established the “Mottainai Society” in 2006 and is currently President. In fall 2007, he was awarded the Order of the Sacred Treasure, Gold Rays with Neck Ribbon. His publications include “Peak Oil Has Come — ‘Japan’s Plan B’ to Avoid Collapse” published in 2007 by Nikkan Kogyo Shinbunsha.