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April 26 and 27, Tuesday and Wednesday - Nobel prizewinner Robert Horvitz will give two lectures about his work on programmed cell death and the development of the nervous system. The titles of his talks are “Cell Suicide: Programmed Cell Death in Development and Disease” on April 26 and “The Genetic Control of Programmed Cell Death in the Nematode C. elegans” on April 27. Both lectures will start at 4:10 p.m. in room 1309, Surge III. Horvitz is the David H. Koch professor of biology at the Massachusetts Institute of Technology and neurobiologist and geneticist at Massachusetts General Hospital in Boston. He was awarded the 2002 Nobel Prize for Physiology or Medicine for discoveries in the genetic regulation of organ development and programmed cell death, sharing the prize with Sydney Brenner and John E. Sulston, both from England. Horvitz's lectures are sponsored by the Storer Life Science Lectureship. For more information, please call (530) 752-3502 or see “Seminars and Events in Biology” at .