Mohamed H.A. Hassan, executive director of TWAS — the Academy of Sciences for the Developing World — will give one of four plenary lectures at the AAAS Annual Meeting being held in San Francisco from 15-19 February. His topic is ‘international cooperation in science and technology for sustainable well-being.’ Other plenary lectures include: Larry Page, co-founder of Google; Nobel Laureate Steven Chu (Physics 1997), professor of physics and applied physics of Stanford University; and Susan Solomon, co-chair of Working Group 1, Intergovernmental Panel on Climate Change (IPCC), and senior scientist at the National Oceanic and Atmospheric Administration (NOAA). The meeting is expected to draw more than 5000 people.