U.S. Science Envoy Dr. Zerhouni, M.D., arrived in Morocco today on a two-week trip to North Africa that will include visits to Algeria, Tunisia, and Libya. On this trip, Dr. Zerhouni will seek areas for cooperation on health, science and technology, and education in meetings with heads of state, ministers, and representatives from the scientific, education, nonprofit, and business communities. Dr. Zerhouni, Dr. Ahmed Zewail, and Dr. Bruce Alberts -- ...