In the Handbook of Neurotoxicology, Volumes I and II, many leading researchers and clinicians - all acknowledged experts - review in depth the status of research in key areas of current neurotoxicologic interest and examine the latest methodologies for in vivo assessment of a wide spectrum of agents exhibiting neurotoxicologic properties. This second volume of the Handbook focuses on the biologic effects of human-made toxins on the developing organism, and of drugs of abuse. Here are discussed the interpretation of neurotoxicity data, the art of risk assessment, and the manifestation of CNS insult during development. The drugs of abuse surveyed include cocaine, marijuana, the cannabinoids, and amphetimines. Also provided are state-of-the-art methods for the evaluation of neurotoxicant effects by both imaging and neurobehavioral assessment. Volume I concentrates on the biological effects of both human-made neurotoxins (pesticides, mercury, lead, zinc, and polytypic byproducts of combustion and manufacture) and those of natural origin (microbial and animal toxins).