Nanoscientist Departs for Northwestern U.; Japanese Stem-Cell Scientist Straddles the Pacific; U. of California's President Resigns

MOVING AGAIN: J. Fraser Stoddart, a nano­science pioneer, describes himself as "someone who thrives on change," moving, on average, every seven or eight years. Having been at the University of California at Los Angeles for 10 years, he decided it was time to once again up and go.

In January Mr. Stoddart, 65, will join Northwestern University as a professor of chemistry and director of the new Center for the Chemistry of Integrated Systems. "If I were to stay on at UCLA for more