Forensics involves a multidisciplinary team of scientists, including medical doctors, anthropologists, physicists, and odontologists (scientists specializing in teeth), who carry out precise analysis of an event and evidence related to it. Their work is geared to providing a legal body with elements that serve to support or refute a testimony or document—a letter left behind by a victim, for example. When a scientific discipline is applied to a legal proceeding, it is called a forensic science. A forensic expert is someone who undertakes a scientific investigation that provides information, which is then used in the legal process. When a scientist provides scientific information on a case, the court considers him or her an expert witness. In most cases, this scientific information comes from the analysis of physical evidence, whether biological (a cadaver, skeletal remains, a bloodstain, saliva on an envelope) or nonbiological...