U.S. flag

An official website of the United States government, Department of Justice.

Law enforcement

NIJ FY24 Measurement of Community Perceptions

Closing Date
Grants.gov Deadline
Application JustGrants Deadline
With this solicitation, NIJ seeks applications for research on, and demonstration projects of, improved approaches to measuring community perceptions of policing and public safety. Specifically, NIJ seeks to fund research that develops and tests innovative methods to provide representative samples that are accurate across microgeographic areas, cost-effective, able to be implemented frequently, and scalable for use in municipalities of various sizes.

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. 

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

January 2024

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.