For some, “survival of the fittest” refers to the question of who will prevail in Sunday’s Super Bowl. But for others, the phrase will be part of the discussions taking place that very afternoon during the Darwin Day celebration on campus Sunday, Feb. 7, from 1 to 5:30 p.m. in the Geology Corner, Building 320, Room 105. Anthropology Professor WILLIAM DURHAM and ROBERT SIEGEL, associate professor (teaching) of microbiology and immunology, will serve as hosts and moderators for the event, which will feature short talks and “evolutionary birthday cake.”