In the hands of a forensic scientist, all of these become clues to a crime. These experts use their diverse knowledge to determine where a person stood to fire a gun, when and where a crime occurred, or the identity of a victim.
Forensic scientists come from a variety of backgrounds.
Biology, physical anthropology, engineering, chemistry, medicine, psychology, and molecular biology are just a few of the types of science used to solve crimes. The work of forensic scientists reduces the number of cases that enter the court system by helping to make many decisions before the cases come to trial. Forensic Toxicology has been used to solves crimes for more than 150 years. The first use of forensic chemistry was a murder case in France in 1840. Marie LaFarge was accused of poisoning her husband, Charles.