Caroline Jean AckerCaroline Jean Acker is an associate professor of history at Carnegie Mellon University and cofounder of Prevention Point Pittsburgh, a needle exchange program in Allegheny County, Pennsylvania. She is co-editor, with Sarah W. Tracy, of Altring American Consciousness: Essays in the History of Alcohol and Drug Use in the United States, 1800-2000 (University of Massachusetts Press, 2004). Read More Read Less