The transfer of surplus military equipment to American police forces has divided communities. New research says it reduces crime.

A new study suggests a link between certain facial features and the severity of the punishment a judge assigns to felony crime.

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.