Signs of the times Chancellor Mark S. Wrighton addresses students participating in the fall Undergraduate Research Symposium Oct. 25 in the Danforth University Center. The setting — a first for the four-year-old event — provided a unique atmosphere for students and visitors to view the projects. More than 200 students took part in the symposium, the largest in the biannual event’s history, and showcased their research projects through poster, visual and oral presentations.