Dear Colleagues, Korea Polar Research Institute (KOPRI) announces the 15th International Symposium on Polar Sciences. This year, its theme is "Polar Ecosystems: biodiversity and adaptation". The purpose of this symposium is to bring together polar ecologists and biologists and to provide an international forum to exchange and share their ideas and results. It will deal with ecology, classification, cold adaptation, and natural products of polar organisms. In addition, we would like to start discussing and developing the international research effort using Araon, the upcoming Korean icebreaker. We appreciate your participation and interest for the polar sciences. We are looking forward to meeting you in Incheon. Feb 27, 2008 Dr. Hong Kum Lee Director-General, Korea Polar Research Institute