The book "Chemicals as Intentional and Accidental Global Environmental Threats" offers a comprehensive analysis of the dangers that chemical substances pose to the global environment. It is based on the contributions from the NATO Advanced Study Institute held in November 2005 in Borovetz, Bulgaria. A variety of professionals from the fields of ecology, chemistry, medicine, epidemiology, public health, toxicology, risk assessment, and environmental management gathered to discuss the risks and challenges associated with chemical threats. The intentional or unintentional release of chemicals into the environment poses a serious threat to public health and safety. The book also highlights the potential dangers posed by terrorists who may use advanced technologies to carry out chemical attacks on civilian and political institutions. Additionally, it addresses the economic burden of managing chemical accidents and historical contaminations.