AKRON (Oct. 26)—Y. Tanaka, noted for his success in analyzing the exact molecular structure of natural rubber, has won the Charles Goodyear Medal, the ACS Rubber Division´s highest award. Tanaka recently retired from Tokyo University of Agriculture and Technology, where he was a professor in the Division of Applied Chemistry. His work has thrown light on the mechanisms of biosynthesis of elastomeric materials, and on the reasons for the special rheological features exhibited by natural rubber, according to his nomination letter by Alan G. Gent of the University of Akron, himself a Charles Goodyear Medalist. Tanaka´s work has created "a real possibility of duplicating the physical properties of natural rubber in a synthetic analog," Gent wrote. Tanaka was selected as the medal winner during the division´s fall meeting in Cincinnati, but the announced was delayed until he could be contacted and agreed to accept the award and lecture at the 2001 spring meeting Providence, R.I.