The life, work, and legacy of Svante August Arrhenius, a renowned Swedish scientist who made significant contributions to physical chemistry and climate science. Born in 1859, Arrhenius became known for his groundbreaking work on electrolytic dissociation, which laid the foundation for the field of physical chemistry and earned him the Nobel Prize in Chemistry in 1903. Beyond his achievements in chemistry, Arrhenius pioneered the study of the greenhouse effect and climate change, being the first to propose a link between atmospheric carbon dioxide levels and global temperatures in 1896. His insights continue to influence modern climate science, demonstrating the profound impact of his scientific contributions.