Following a human sexuality class last week on Northwestern's Evanston, Ill., campus, Prof. John Michael Bailey invited students to stay for an extracurricular demonstration that he warned would be explicit and graphic. Of the 567 students enrolled in the class, about 100 stayed to watch a sexual act involving a woman, a man and an electric-powered device...the couple who performed were Chicagoans Jim Marcus and Faith Kroll. [WSJ]