Forensic Anthropology is a relatively young forensic science. It involves the application of standard physical anthropology techniques to the forensic context. Forensic Anthropologists use their knowledge of the human skeleton to determine whether skeletal remains are animal or human, and if they are human, how many individuals are represented. They examine the skeletal remains and build an osteological profile of unidentified individuals, through the determination of the age at death, sex, ethnic ancestry and the stature of human remains. They can also provide information about the lifestyle of the individual and any pathological conditions affecting the skeleton from which they may have suffered. Forensic Anthropologists may also be able to determine the cause and manner of an individual's death, by looking at skeletal trauma. In some instances they may be able to identify the weapon used. Forensic Anthropology is used in investigations of homicide, atrocity crimes and genocide and in the identification of victims of mass disaster.