The traveling exhibit that debuted over the weekend at the Science Museum of Minnesota isn't for the squeamish. CSI: Crime Scene Insects explores the world of forensic entomology, or the use of insect evidence to help solve crimes. The exhibit takes visitors through the history of forensic entomology, which dates back to 13th century China. It features two mock crime scenes where visitors can collect evidence to demonstrate how criminal investigators use insects to uncover critical details of a crime. Forensic entomologist M. Lee Goff is the exhibit's curator. He's a professor of forensic sciences at Chaminade University in Honolulu, and he also serves as a consultant for the television series "CSI: Crime Scene Investigation." Goff says that insects are nature's ultimate eyewitnesses.