Childhood: Tokyo, Japan, son of hat manufacturer; Columbia University, geochemistry; association with Lamont-Doherty Earth Observatory [LDEO]; research aboard Vema; association with Scripps Oceanographic Institute, 1957; work on Geochemical Ocean Sections; New York State College of Ceramics: professor, geochemistry, 1960-1962; University of Rochester: professor, geochemistry, 1962-1970; California Institute of Technology, research, seismology; contract with National Aeronautics and Space Administration: research on composition of moon’s core, 1978; Queen’s College, New York: geochemistry; return to Lamont: full-time researcher, associate director, head of geochemistry; restructuring of administration; New York University: chemical research; reminiscences of colleagues.