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Not every crime scene will have definitive evidence, such as DNA, to link an individual to a crime. In those cases, law enforcement relies on other evidence to build the burden of proof. NIJ graduate research fellow Dr. Shelby Khandasammy developed a tool to analyze organic gunshot residue and distinguish between different firearms calibers and manufacturers. She joins Marie Garcia, office director for the Office of Criminal Justice Systems at NIJ, to talk about her work and experience as a research fellow. 

Marijuana legalization poses many challenges — especially those related to drug chemistry and toxicology — for researchers, law enforcement, and policy makers. In the latest episode of Justice Today, NIJ Communications Assistant Josh Mondoro hosts a conversation with NIJ Scientist Frances Scott about marijuana toxicology, including comparing its effects to alcohol, measuring impairment, and maintaining public safety as more and more states legalize recreational marijuana. 

Marijuana poses many challenges for researchers, law enforcement, and policy makers, challenges that fall into two fields: drug chemistry and toxicology. NIJ scientist Dr. Frances Scott joins this episode to explain the complications in drug chemistry and how difficulties defining marijuana lead to backlogs in crime labs around the country. NIJ Communications Assistant Josh Mondoro hosts. 

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In April 2018, the Golden State Killer, Joseph DeAngelo was arrested. NIJ support helped lead to his arrest, and in the aftermath of the arrest, NIJ Social Science Analyst Eric Martin was among those tasked with finding other cases NIJ helped law enforcement solve. Eric joins the show to talk about some of those cases, and answer some broader questions about serial killers: What is a serial killer? Are they on the rise? How do we know how many serial killers are currently active?

A large body of research on crime and justice is available, yet it can take years for findings to influence practice in the field. During a recent panel at NIJ’s 2023 National Research Conference, researchers and practitioners shared ideas and discussed practical steps and promising new approaches to inspire change. Three guests join the show to continue their conversation: Dr. Tamara Herold, a senior advisor to the NIJ director, Dr. Nancy La Vigne, hosts Dr. Shon Barnes, the police chief of the Madison (Wisconsin) Police Department, and Dr.

Three LEADS Scholars serving in different law enforcement agencies and positions discuss their experiences with identifying and implementing evidence-based interventions to reduce gun violence. NIJ Senior Advisor Dr. Tamara Herold hosts this conversation with guests Police Chief Cecilia Ashe (Milford Delaware Police Department), Chief of Staff Lieutenant Matthew Barter (Manchester, NH Police Department), and Analytical Services Manager Mr. Jason Schiess (Durham, NC Police Department). 

Three LEADS Scholars serving in different law enforcement agencies and positions discuss their experiences with identifying and implementing evidence-based interventions to reduce gun violence. NIJ Senior Advisor Dr. Tamara Herold hosts this conversation with guests Police Chief Cecilia Ashe (Milford Delaware Police Department), Chief of Staff Lieutenant Matthew Barter (Manchester, NH Police Department), and Analytical Services Manager Mr. Jason Schiess (Durham, NC Police Department). 

Social media has become a potent tool for spreading extremist beliefs and promoting violent extremism. NIJ Social Science analyst Aisha Javed Qureshi joins writer-editor Paul Haskins for a conversation about how scientific research is helping law enforcement and other agencies understand and address this growing concern.