• Honoring Dr. Sumio Iijima (2002 Benjamin Franklin Medal of Physics); The Advancing Frontier of Carbon Nanotubes or Carbon Nanotubes and Beyond. Auditorium LRSM, Wednesday, April 24, 8:30 a.m.-3:30 p.m. Chaired by Dr. Elias Burstein, Mary Amanda Wood Professor of Physics Emeritus, the program includes Dr. Iijima, whose talk will be introduced by Nobel Laureate Leo Esaki, Marvin L. Cohen, of UC Berkeley; John E. Fischer, Materials Science; and Millie S. Dresselhaus, MIT.

Dr. Iijima, professor of materials science and engineering at Meijo University, is being honored "For the discovery and elucidation of the atomic structure and helical character of multi-wall and single-wall carbon nanotubes, which have had an enormous impact on the rapidly growing condensed matter and materials science field of nanoscale science and electronics."

Please respond with your plans to attend to Kathy Kramer at Kramer@lrsm.upenn.edu.

• Honoring Dr. Lucy Suchman (2002 Benjamin Franklin Medal in Computer and Cognitive Science); Refiguring Sociomaterial Relations at the Interface. University of Pennsylvania Museum Academic Wing, Room 345, Wednesday, April 24, 10 a.m.-noon. Chaired by Dr. Gregory P. Urban, Department of Anthropology.

Dr. Suchman, professor of sociology at Cartmel College at Lancaster University in the United Kingdom, is being honored " For her fundamental contributions to ethnographic analysis, conversational analysis and Participatory Design techniques for the development of interactive computer systems. Her techniques for system development have created a paradigm change in the way interactive systems are designed."

Please respond with your plans to attend to Ronnie (Veronica) Kent at vkent@sas.upenn.edu.

• Honoring Dr. Mary Dell Chilton (2002 Benjamin Franklin Medal in Life Science); Agrobacterium and the Molecular Basis of Crop Improvement. 10 Leidy Labs, Wednesday, April 24, 1-4 p.m. Chaired by Dr. Andrew N. Binns, Carolyn Hoff Lynch Professor and Chair, Department of Biology, the program includes Dr. Chilton along with Dr. Paul J. J. Hooykaas, Institute of Molecular Plant Sciences Clusius Laboratory, University of Leiden; and Dr. Ingo Potrykus, Swiss Federaal Institute of Technology.

Dr. Chilton of Syngenta Biotechnolgy is being honored "For her key discoveries and wide ranging contributions in the development of the Agrobacterium tumefaciens Ti plasmid as a major vector system for plant genetic engineering."

Please respond with your plans to attend to Pauline Saribas at psaribas@sas.upenn.edu.

• Honoring Dr. John W. Cahn (2002 Bower Award and Prize for Achievement in Science) and Dr. Alexandra Navrotsky (2002 Benjamin Franklin Medal in Earth Science). Amado Recital Hall, Irvine Auditorium, Thursday, April 25, 9 a.m.-2 p.m. Chaired by Dr. Takeshi Egami, Professor and Chair, Department of Materials Science and Engineering, the program includes Drs. Cahn and Navrotsky along with Dr. W. Craig Carter, MIT; Dr. Juraj Mazlan, University of California, Davis; Dr. Russel J. Composto, Materials Science and Engineering; and Dr. Peter Davies, Director, Institute for Medicine and Engineering (IME).

Dr. Cahn of the National Institute of Standards and Technology is being honored " For profound contributions to the understanding of the thermodynamics and kinetics of phase transformations. His lifelong dedication to understanding materials has inspired generations of scientists and engineers to develop new materials based on his groundbreaking theories."

Dr. Navrotsky of the University of California at Davis is being honored "For her wide spectrum of accomplishments in crystal chemistry that have importantly contributed to the fields of bonding energies, ceramics and materials research, chemical equilibria, geology, mantle petrology and thermodynamics. For example, her findings have established, convincingly, the identity of materials at hundreds of kilometers of depth in the Earth that otherwise are inaccessible to direct observation."

Please respond with your plans to attend to Pat Overend at poverend@soll.lrsm.upenn.edu. For complete information about this seminar see www.seas.upenn.edu/mse/bower_franklin_02.html.