Mary Beth Mulcahy, Ph.D, is an investigator at the U.S. Chemical Safety Board. Mulcahy doesn't normally know what her day is going to be like at work. As an investigator at this federal agency, Mulcahy typically gathers evidence and witnesses at an incident scene. But her work goes beyond crunching data and analyzing numbers. Listen as Mulcahy shares her experience working at the CSB and what it takes for young professionals to be an investigator.