Bruce Alberts, president of the National Academy of Sciences in Washington, D.C., is known for his work both in biochemistry and molecular biology, in particular for his extensive study of the protein complexes that allow chromosomes to be replicated. Alberts graduated from Harvard College and earned a doctorate from Harvard University in 1965. He joined the faculty of Princeton University in 1966 and after ten years moved to the Department of Biochemistry and Biophysics at the University of California, San Francisco, where he became chair. He is a principal author of the Molecular Biology of the Cell, through 3 editions the leading advanced textbook in this important field. His most recent text, Essential Cell Biology (1997), is intended to present this subject matter to a wider audience. Dr. Alberts has long been committed to the improvement of science education, dedicating much of his time to educational projects such as City Science, a program that seeks to improve science teaching in San Francisco elementary schools.