OSTP Director John P. Holdren gave one of the two keynote addresses at the Kavli Prize Science Forum in Oslo, Norway on Monday, with the title “Climate-Change Science and Policy: What Do We Know? What Should We Do?” The forum was part of a week of festivities around the second biennial award of the Kavli Prizes in Science, which are administered by the Norwegian Academy of Science and Letters on behalf of the Kavli Foundation and the Norwegian Ministry of Education and Research. Three prizes of $1,000,000 each are awarded in the fields of astrophysics, nanoscience, and neuroscience. Seven of the eight 2010 laureates are Americans. The Science Forum, with the overall theme of “The Role of International Cooperation in Science”, was also addressed by the first Secretary General of the European Research Council; the presidents of the academies of science of the United States, the United Kingdom, China, and Norway; the president of the U.S. National Academy of Engineering; U.S. Undersecretary of Energy Steve Koonin; the president of the Science Council of Japan; the Norwegian Minister of Foreign Affairs; and the Norwegian Minister of Education and Research.