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Forensic sciences

DNA 101

August 2023

This training was presented as a part of the National Center on Forensics conference at George Mason University on August 8th, 2023. In this session, FBI Forensic DNA Examiner Amanda Bakker introduces all the most vital concepts of DNA analysis and evidence. For those who aren’t DNA analysts but work in tangential fields such as law enforcement and criminal justice, this session will be incredibly useful for understanding topics such as what DNA is, how it transfers, how it is collected, and how it is analyzed.

Impression Session: Firearms and Toolmarks

August 2023

This training was presented as a part of the National Center on Forensics Conference at George Mason University on August 10th, 2023. In this session, NIST Senior Forensic Science Research Manager Rob Thompson and FBI Supervisory Physical Scientist/Forensic Examiner Michelle Machalka introduce the concepts of firearm and fingerprint impressions.

Cold Cases and Serial Killers (Part Two)

December 2023

NIJ Social Science Analyst Eric Martin discusses why the number of serial killers is declining and the factors that deter people from this type of violent offense. He also shares insight into whether society is experiencing an evolution away from serial killing and how NIJ continues to support research in this area.

Mark Greene, the Division Director of the Technology and Standards Division at NIJ, and Lucas Zarwell, the Office Director of NIJ’s Office of Investigative and Forensic Sciences, co-host this conversation about serial killers.

Responding to Intimate Partner Violence Related Strangulation Integrating Policy, Practice, and Rese

October 2024

This webinar examines the problem of Intimate Partner Violence Strangulation and an innovative response policy. The presentation will include an overview of the nature and extent of strangulation, its dangers, and adverse medical consequences followed by a review of a Strangulation Ordinance in Burleson, Texas that mandates extensive training for first responders and a city-wide response protocol for strangulation detection and investigation, documentation of strangulation signs and symptoms, medical assistance, and service referrals for strangulation survivors.

Providing Forensics Training to Rural Jurisdictions - NIJ National Center on Forensics (NCF)

February 2024

Well-trained forensics specialists are integral to ensuring justice across the United States. However, in the country's rural states and locations, this training can be hard to come by. 

The National Center on Forensics (NCF) is a partnership between George Mason University, the National Association of Attorneys General, the American Society for Clinical Pathology, and the Montana Forensic Science Division funded by the National Institute of Justice. This grant program aims to bring forensics training to the nation's underserved rural areas. 

Closing Cases Using Gunshot Residue

May 2024

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. 

What's Known and Unknown about Marijuana (Part Two)

January 2024

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.