Martin Rees (Chair), Lord Rees of Ludlow, is Astronomer Royal, and was until recently Master of Trinity College, Cambridge. He was President of the Royal Society for the period 2005-10. After a spell as professor at Sussex University, he moved to Cambridge where he has held various posts, including ten years as Director of the Institute of Astronomy. He has received many awards, and has served on many bodies connected with education, space research, arms control and international science. He has been a trustee of the British Museum, the Science Museum, the IPPR and the Princeton Institute for Advanced Study.