Dr. Emily Greene-Colozzi is an assistant professor in the School of Criminology and Justice Studies at the University of Massachusetts Lowell. Her research focuses on the situational correlates of public mass gun violence, school violence, and extremist violence, and in particular, on harm mitigation and prevention techniques through environmental design and situational crime prevention. She has developed and contributed to several federally-funded open-source databases measuring rare and mass violence, including her doctoral dissertation (City University of New York, John Jay College of Criminal Justice). Additional research interests include advancing and improving open-source data reliability, transparency, and integrity. Her work has been published in Journal of School Violence, Crime & Delinquency, Justice Quarterly, and Aggression and Violent Behavior.