The term "Forensic Science" generally refers to the use of scientific methods in legal affairs. As such, the meaning is very wide and we can use it about very different things. We can employ concepts from Physics to infer the trajectory of a bullet. Or, molecular biology can help to identify a person who was present in a crime scene. Likewise, a Psychiatrist
doctor can use his/her science to determine wheter a suspect acted under his own control when commiting a violent act. These few examples demonstrate that there is no single 'forensic' discipline.

If you are interested in pursuing a career in forensics a good thing to do is consider which of the big areas of forensics you are more interested in, or you find most appealing. Here is a list of the "big areas" of forensics and a few examples of what's in them:

• Bioscience and forensics

This is probable the largest and better known division of Forensic Science. By Biosciences we mean any field that is related to the "biological" aspect of crime investigation. Here are a few examples:

Autopsy. This fields has to do with any kind of post-mortem examination of human bodies (corpses) aimed to establish cause of death (COD) and extract any possible clue that may help police investigators to understand the details that surrounded a criminal event. The professionals involved are of course physicians (MD) but also other auxiliary specialists such laboratory technicians, surgery assistants and others.

Forensic Medical Examiner. Police also counts on physicians to examine alive persons. It may be for example to establish the extent of injury after a physical assault or to gather information regarding the details of a crime or accident scene. Professionals in charge are usually MDs but also nurses or other trained and certified personnel.

Genetics experts. Analysis of DNA evidence is now an essential part of the resources Police use to solve crimes. Of course, DNA science requires of people with specific training in Biology, Genetics and/or laboratory techniques. Qualifications of the persons involved in this area may range from a lab technician degree that took about a year to earn up to a full Ph.D. in Genetics or Molecular Biology. Many Schools are now offering programs and courses tailored to suit the needs of this kind of work.

Environmental assessment. This is probable the least popular area of this section, but can be extremely important when dealing with certain crimes. For example, an Industrial establishment may be prosecuted for releasing dangerous substances  to the environment. Environmental experts know about air contamination, soil quality, water management and other subjects. Usually, professional degrees are required for this posts.

• Physical evidence processing

This is another popular main area of Forensic Science. Here we include all the techniques and methods needed for Crime Scene investigation that is not biological or health-related.

Fingerprint collection and interpretation. This is a central issue that requires lots of dedication and uses sophisticated analytical methods and technology.

Ballistics.  (text in preparation)