This book investigates the dual nature of selenium as both an essential nutrient and a potentially toxic environmental contaminant. The author, Gary S. Banuelos, compiles research from international contributors to examine the complex geochemical and biological pathways of selenium. The text provides a comprehensive framework for understanding how selenium concentrations in soil and water influence animal and human health outcomes globally.

Experts recognize this work as a vital reference for environmental scientists and toxicologists studying trace element dynamics. Readers frequently note the technical density of the research, which serves as a foundational text for understanding the global impact of selenium.