The NIJ Forensic Technology Center of Excellence hosted the JustScience podcast from 2017 to 2025. NIJ has posted episodes that were released from 2022 and 2025 and will post the remaining episodes over the coming months.
The Poison of a Mother's Love: The Hope Ybarra Investigation of Medical Child Abuse, Part 1
Munchausen Syndrome by proxy is rare but debilitating for both the parent and the victim. Due to its rarity, investigating and proving the existence of Munchausen Syndrome by proxy is exceptionally difficult. In this presentation, Mike Weber of the Tarrant County, TX, District Attorney’s Office explained how he collected evidence for the case of Hope Ybarra.
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Vulnerable Victims: Forensic Pathology of Child Abuse, Part 3
These presentations highlight specific case studies from a pathologist’s perspective. Jamie Downs, M.D., discussed several topics, including best practices for identifying child abuse and the difference between manner of death and cause of death.
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Game Over: The Prosecution of Mell Hall, Part 3
Former Major League Baseball player Mel Hall is known for many things, but his athletic career is shadowed by a severe crime: preying on underage girls. In 2009, Hall was convicted of three counts of sexual assault of a child and two counts of indecency with a child. In this presentation, survivor Chaz discussed her personal story and the methods Hall used to manipulate her family into trusting him.
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Elder Abuse: Domestic Violence and Special Needs Victims, Part 2
The elderly and those living with special needs are two of the most vulnerable populations in our society. As such, additional care and knowledge is necessary to investigate these cases. Jamie Downs, M.D., provided detailed case studies, best practices for investigating these cases, and other noteworthy topics in this presentation.
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Human Trafficking in the U.S. and Worldwide Including Dental Aspects, Part 1
Identifying victims of human trafficking has a unique set of obstacles, often compounded by language barriers or the victim’s unwillingness to work with law enforcement. Uncovering even the most basic information about victims, both alive and dead, can be a challenge. John P. Kenney, D.D.S., discussed a method for using teeth to determine the ages of unknown victims in this presentation.
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Tiffany's Story: The Impact of Abusive Head Trauma on the Family, Part 1
Over the twenty years following the tragic abuse of her child, Bonnie Armstrong has worked tirelessly to pursue justice, support victim’s families, and prevent child abuse in its many forms. Through case consultation, legislative lobbying, and the development of forensic training programs, Armstrong and The Shaken Baby Alliance seek to end child abuse. In her introduction, Armstrong shared the story of her child’s abuse at the hands of the baby’s father and the impact that The Shaken Baby Alliance makes in the fight against abuse.
See the YouTube Terms of Service and Google Privacy Policy
Game Over: The Prosecution of Mell Hall, Part 1
Former Major League Baseball player Mel Hall is known for many things, but his athletic career is shadowed by a severe crime: preying on underage girls. In 2009, Hall was convicted of three counts of sexual assault of a child and two counts of indecency with a child. In this presentation, survivor Chaz discussed her personal story and the methods Hall used to manipulate her family into trusting him.
See the YouTube Terms of Service and Google Privacy Policy
Elder Abuse: Domestic Violence and Special Needs Victims, Part 1
The elderly and those living with special needs are two of the most vulnerable populations in our society. As such, additional care and knowledge is necessary to investigate these cases. Jamie Downs, M.D., provided detailed case studies, best practices for investigating these cases, and other noteworthy topics in this presentation.
See the YouTube Terms of Service and Google Privacy Policy
Forensic Investigative Techniques and Case Consultations, Part 1
In the final presentation of the day, Bonnie Armstrong and Jamie Downs, M.D., speak with investigators about case consultation and evidence collection techniques. Topics include: photography, search warrants, multidisciplinary teams, and the information that can be gained from an autopsy.
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The Poison of a Mother's Love: The Hope Ybarra Investigation of Medical Child Abuse, Part 2
Munchausen Syndrome by proxy is rare but debilitating for both the parent and the victim. Due to its rarity, investigating and proving the existence of Munchausen Syndrome by proxy is exceptionally difficult. In this presentation, Mike Weber of the Tarrant County, TX, District Attorney’s Office explained how he collected evidence for the case of Hope Ybarra.
See the YouTube Terms of Service and Google Privacy Policy
Vulnerable Victims: Forensic Pathology of Child Abuse, Part 4
These presentations highlight specific case studies from a pathologist’s perspective. Jamie Downs, M.D., discussed several topics, including best practices for identifying child abuse and the difference between manner of death and cause of death.
See the YouTube Terms of Service and Google Privacy Policy
Vulnerable Victims: Forensic Pathology of Child Abuse, Part 1
These presentations highlight specific case studies from a pathologist’s perspective. Jamie Downs, M.D., discussed several topics, including best practices for identifying child abuse and the difference between manner of death and cause of death.
See the YouTube Terms of Service and Google Privacy Policy
Forensic Entomology Overview, Part 1
Entomology has a multitude of uses when it comes to forensic investigation. Whether investigators are estimating post-mortem interval or trying to understand damage dealt to a corpse after death, insects and their behaviors may provide clues or missing information. In this presentation, Neal Haskell, Ph.D., discussed specific case studies and how forensic entomology aided these investigations.
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Human Trafficking in the U.S. and Worldwide Including Dental Aspects, Part 2
Identifying victims of human trafficking has a unique set of obstacles, often compounded by language barriers or the victim’s unwillingness to work with law enforcement. Uncovering even the most basic information about victims, both alive and dead, can be a challenge. John P. Kenney, D.D.S., discussed a method for using teeth to determine the ages of unknown victims in this presentation.
See the YouTube Terms of Service and Google Privacy Policy
Tiffany's Story: The Impact of Abusive Head Trauma on the Family, Part 2
Over the twenty years following the tragic abuse of her child, Bonnie Armstrong has worked tirelessly to pursue justice, support victim’s families, and prevent child abuse in its many forms. Through case consultation, legislative lobbying, and the development of forensic training programs, Armstrong and The Shaken Baby Alliance seek to end child abuse. In her introduction, Armstrong shared the story of her child’s abuse at the hands of the baby’s father and the impact that The Shaken Baby Alliance makes in the fight against abuse.
See the YouTube Terms of Service and Google Privacy Policy
Dreamland: Sam Quinones Explores America's Opiate Epidemic
Sam Quinones is a Los Angeles-based freelance journalist and author of three books of narrative nonfiction. His latest book is Dreamland: The True Tale of America's Opiate Epidemic (Bloomsbury, 2015), which will be discussed in this webinar.
This webinar was presented by the NIJ Forensic Technology Center of Excellence in January 2017.
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Identify Synthetic Opioids using Ambient Ionization TOF-MS
This webinar will present the results of the evaluation of Direct Sample Analysis Time-of-Flight Mass Spectrometry to provide rapid identification of eighteen fentanyl analogues and related synthetic opiates.
This webinar was presented by the NIJ Forensic Technology Center of Excellence in 2017.
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Predict Human Appearance From DNA Focusing on Pigmentation
Principles, methods and applications of DNA-based prediction of human appearance traits for forensic and anthropological use with specific insights into eye, hair, and skin colour prediction from DNA.
This webinar was presented by the NIJ Forensic Technology Center of Excellence on January 1, 2017.
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Variability in Blow-Fly Development - Research and Implications for PMI Practice
Dr. Leon Higley’s work to characterize blow-fly species indicates that there is variation within a single population--the bell curve is wide. Dr. Higley will share his research and discuss how the science is challenging some notions about PMI analysis.
This webinar was presented by the NIJ Forensic Technology Center of Excellence on November 7, 2018.
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Effective Leadership Communication: Why it Makes or Breaks Leading Change
Effective leadership communication plays a vital role in promoting meaningful change within an organization. This presentation explores key principles such as “modeling the way”, “inspiring a shared vision”, and “start with why”. Vision-driven communication requires crime laboratory supervisors to utilize various communication tools while they act as a driving force within the organization, leading their teams to success.
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Statistical Genetics and the Mechanisms of Probabilistic Genotyping
Probabilistic genotyping is a tool that uses computing power to aid in the identification of possible genotype sets within DNA typing results and to calculate likelihood ratios to estimate evidentiary weight. In this installment of Probabilistic Genotyping of Evidentiary DNA Typing Results, we will detail the background and principles of biostatistical analysis, to include match probabilities, likelihood ratios and other specific topics aimed at furthering understanding of the statistical basis of probabilistic genotyping.
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Occurrence and Utility of Latent Print Correspondences That Are Insufficient for Identification
This event brought together practitioners and researchers to enhance information-sharing and promote collaboration among the impression, pattern, and trace evidence analysts, law enforcement, and legal communities.
The symposium was presented by the NIJ Forensic Technology Center of Excellence January 22-25, 2018.
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