The book "Bioinorganic Chemistry" offers a comprehensive examination of the role of metals in biological systems, particularly in the context of bioinorganic chemistry. The first three chapters focus on the chemistry of nickel and heme, which are closely associated with anaerobic life and point to reactions that occurred around 3 to 4 billion years ago. These early catalysts, which utilize simple raw materials such as hydrogen, carbon monoxide, and sulfate, are of great interest to industry. The fourth chapter discusses the metal copper, which played a significant role in evolution and is involved in the utilization of dioxygen. The book highlights the fascinating catalytic properties of enzymes and illustrates how the functions of metal enzymes have evolved over time with changes in the environment.