Biological and Chemical Security includes the overlap between detection of and defense against chemical agents and the toxins, the source of which can be either man-made or natural, and biological effects of chemical weapons and large-scale releases of hazardous industrial chemicals, that can often be serious and long-lasting. Biological and Chemical Security is an area that concerns the environment as well as the people living in it. The increasing amount of threats in this area that are fueled by both global political tension and technological advancements makes it a crucial branch of security.