Publisher's Note A report on the proceedings of the 7th project of the Scientific Group on Methodologies for the Safety Evaluation of Chemicals. Addresses the problems which pesticides may pose to non-target organisms, humans, animals, plants, microorganisms and ecosystems. Topics include assessment and control of exposure of organisms to pesticides, acute and chronic toxicity in humans and damage to ecosystems. Recommendations are made on research needs and on ways of mitigating the problems due to pesticide use.