Book excerpt: Compiled by two of the world’s experts in the field, The Handbook of Trace Elements brings together into a single source a complete listing of the trace elements found in both naturally occurring and manmade substances in the environment. The book provides a thorough description by element for 41 trace elements, transition metals, and micronutrients found in Earth's crust, soil, water, plants, animals, and humans. Elucidating the ecological impact of industrial waste and health problems in animals and humans, this widely accessible resource continues to provide a reliable reference for researchers, scientists, and other professionals engaged in the study of trace elements.