Lauren Spierer, a bubbly 20-year-old from Greenburgh, N.Y., with a flair for fashion who friends say was drawn to Indiana University because she liked the school spirit and big campus. Spierer went missing last week after drinking with friends at one of the town?s most popular bars. She was last seen walking home alone. Her disappearance highlights the danger drinking can present in college towns and calls to mind similar cases from elsewhere. Wisconsin police have never made an arrest in the 2007 slaying of 22-year-old Kelly Nolan, who disappeared after a night of bar-hopping near the University of Wisconsin-Madison. Her body was found weeks later in a ditch south of the city.