Germanium (Ge) is a lustrous, hard-brittle, grayish-white chemical element with applications in electronic devices and fluorescent lamps, among others. This volume includes four chapters that cover germanium from a variety of perspectives. Chapter One presents recent studies and developments in hydrometallurgical extraction of Ge from base metals production waste. Chapter Two reviews the current knowledge of high-k gate oxides based on Ge semiconductor substrate. Chapter Three focuses on the biocoordination chemistry of Ge and the role Ge plays in the human body. Lastly, Chapter Four presents a dual material Fin Field Effect Transistor structure using Ge as channel material.