A collection of government reports and academic papers that help paint a picture of the men, women and children in custody nationwide. We included a few research articles that look specifically at transgender inmates.

A lower resting heart rate partially explains why men commit more crime than women, according to a new study led by researchers at the University of Pennsylvania.

Living in a crime-prone neighborhood can be stressful. Researchers in Scotland have found a connection between premature births and low birthweights.

An analysis in The Lancet finds that national implementation of background checks on ammo purchases alone could reduce gun-related deaths by 81 percent.

Crime and drunk driving tend to fall after marijuana legalization, according to a 2016 research review.

2016 review of research related to "campus carry," or the debate about whether colleges should allow individuals with concealed carry permits to bring guns onto school property.

A 2016 tip sheet offering a step-by-step guide to finding information about people while covering a crime-related story on deadline.

Updated review of studies and reports that provide insights into law enforcement actions and recent patterns in America.

2015 study published in the Journal of Experimental Criminology that examines how body cameras influence the behavior of police officers during encounters with the public.

2016 study published in the Journal of Applied Ecology that looks at how new tracking technology could help prevent animal poaching and international trade involving illegal wildlife parts.