"Sodium: From Discovery to Modern Energy Applications" is an in-depth exploration of one of the most versatile and vital elements in the periodic table—sodium. This book traces the journey of sodium from its discovery in the early 1800s to its pivotal role in modern industry and cutting-edge energy technologies, including its revolutionary use in Sodium-Cooled Small Modular Reactors (SMRs). Designed for readers interested in science, engineering, and energy innovation, this book delves into sodium's chemical properties, its interactions with other elements, and its applications across a wide range of fields. From industrial manufacturing and agriculture to its use in advanced nuclear reactors, sodium continues to prove itself as a critical player in both historical and modern contexts. Key topics covered include: The Discovery of Sodium: Explore the early scientific breakthroughs that led to the identification and isolation of sodium, setting the stage for its wide-ranging applications. Sodium in Industry and Chemistry: Understand the diverse uses of sodium in industries such as glass manufacturing, metal alloys, and organic chemistry. Sodium in Agriculture and Environmental Science: Learn about sodium’s role in soil chemistry, crop yield, and its impact on sustainable agricultural practices. Sodium as a Coolant in Nuclear Reactors: Dive into the innovative use of sodium in SMRs, where it acts as an efficient and safe coolant in next-generation nuclear power plants. This includes detailed discussions on its role in sodium-cooled fast reactors, advanced safety systems, and its contribution to carbon reduction and energy security. Environmental Impact and Sustainability: Examine the environmental challenges and sustainability measures associated with sodium production, use, and recycling, including its role in renewable energy systems and climate change mitigation. Written by Ron Legarski, a seasoned expert in telecommunications, technology infrastructure, and energy solutions, this book also integrates unique insights into how digital technologies, connectivity, and smart grids are essential in supporting sodium’s modern applications, especially in energy systems like SMRs. Whether you're a scientist, engineer, student, or simply curious about the evolving role of sodium in today’s world, "Sodium: From Discovery to Modern Energy Applications" offers a comprehensive and engaging look at an element that is driving both technological progress and sustainable energy solutions.