Forensic anthropology involves the examination of human skeletal remains for law enforcement agencies to determine identity. It applies anthropological knowledge in a legal context. Forensic anthropologists seek to determine aspects like gender, age, time since death, and possible cause of death. They may also assess ancestry by examining skeletal features. While the field has existed informally for some time, it grew in the 1930s as a way to help investigate gangland murders. Forensic anthropologists provide valuable assistance to criminal investigators and often testify in court.