Articles Published by NIJ

In response to a National Academy of Sciences report calling for more research on the variability of burn patterns, Underwriters Laboratories scientists conducted studies on how ventilation affects fire patterns in residential structures.

Nanoparticles and other subvisible particles potentially present in nearly all trace evidence are often overlooked in forensic investigations. NIJ-supported researchers have characterized several types of particles and developed detection methods.

Cold case investigations have revealed that, in many cases, those responsible also are responsible for multiple crimes. Therefore, prioritizing cold case investigations can assist in both resolving crimes and preventing future ones.

Identifying individuals through next generation DNA sequencing may involve degraded or mixed samples. A researcher has developed a technique to make fragmented DNA more readable, and a method to help pull individual profiles from mixed samples.

Electronic cigarettes, first introduced in the U.S. market in 2006, have evolved from nicotine delivery systems to sophisticated, customizable devices that can deliver a range of illicit drugs.

The forensic power of DNA is clear, but biological evidence also contains RNA, another potential source of information. Because RNA decomposes quickly, its utility is considered limited. Could this decomposition provide information about a sample’s age?

Humans transfer trace signatures of unique colonies of microbes on our skin to objects we touch. The tiny size of that signature make it difficult for investigators to identify an individual. Research now has made that identification more likely.

The regions of the genome relied on for identification of individuals pose challenges for analysts because they often produce artifacts during processing. NIJ-funded research has led to a solution that lessens the artifact problem.

Key questions have arisen about how DNA data are to be interpreted statistically. Two NIJ grants have supported research that has far-reaching implications for testing hypotheses using DNA evidence and expressing confidence in the conclusions reached.