Forensic science is the application of scientific knowledge and method to law.
The agencies that enforce the laws depend on technicians who can collect and analyze key pieces of information at crime scenes. That involves biology, chemistry, physics, anthropology, geology, and computer science. What goes on in a crime scene laboratory is known as criminalistics, which is the collection and analysis of physical evidence. Not all forensic scientists are criminalists, but all criminalists are forensic scientists. The oldest forensic science laboratory in the United States was created in 1923 in Los Angeles, California.