CONGRESS The XIIth International Congress of Quantum Chemistry (ICQC) was successfully held on May 21-26, 2006 in Kyoto, Japan. The conference attracted attendance of more than 700 scientists from 46 countries and becomes one giant leap to promote quantum chemistry development. We are deeply grateful to Professor Hiroshi Nakatsuji, a chair of the conference, for his great efforts in organizing such an interesting and stimulating meeting.   The next XIIIth ICQC will be held on June 22-27, 2009 in Helsinki, Finland. Details, contact Professor Pekka Pyykkö.