The Journal of Toxicology and Environmental Health: Part B, Critical Reviews was instituted to provide a quarterly outlet for in-depth critical reviews, both commissioned and unsolicited, which complement the original research published in the Journal of Toxicology and Environmental Health, Part A, Current Issues .In keeping with the original scope, Part B focuses on environmental sciences, public and occupational health as well as toxicology in general but also concentrates on specific interest fields such as;target organ toxicities;nanotechnology/nanotoxicology;risk assessment and modeling;carcinogenesis and mutagenesis;ecotoxicology and aquatic toxicology;environmental factors affecting public and occupational health. Emphasis will be on the toxicological effects of natural and anthropogenic environmental pollutants and their action on both intact organisms and in vitro systems.All submitted manuscripts are subject to initial appraisal by the Editor, and if found suitable for further consideration, will be peer-reviewed by independent and anonymous expert referees. All peer review is single blind and submission is online via ScholarOne Manuscripts.