HSS Doctoral Candidate Brigid Prial is a Penn Grad Talks Finalist. She presents "Our Closest Cousins? Laboratory Chimpanzees in HIV/AIDS Research and Historicizing Compassion" within the Social Sciences group beginning at 2 p.m. on Friday, Feb. 21 in the Widener Lecture Hall of the Penn Museum at 3260 South Street, Philadelphia, PA 19104.