Jean-Lou Chameau announced Tuesday that he will be stepping down as president of the California Institute of Technology, and will take a position leading the new King Abdullah University of Science and Technology, in Saudi Arabia. In a letter to the campus,  Chameau said that he and his wife had until recently "believed we would complete our careers at Caltech and retire in Pasadena. It would be difficult not to feel that way when working in such a special place and community. We did not expect, however, to be presented with a unique and life-changing opportunity: to lead the recently created King Abdullah University of Science and Technology. As I considered accepting the position at KAUST and as I spoke with individuals involved in its founding, I was struck by the attention paid to establishing a culture of excellence, and how its planning had been influenced by great institutions from around the world, including Caltech."