This book is intended to inform professionals interested in human health about the many interactions between soils and human health. However, many in the target audience may not have a background in soil science. Readers who do not have a soil science background should nd this chapter useful in explaining the soil science terms and concepts discussed in later chapters. There is also a list of additional readings at the end of this chapter that can deepen your knowledge of soil science if you require a more detailed background than is provided here.