This work surveys the development of evolutionary thought from ancient Greek speculation through Renaissance and modern scientific advances, emphasizing Darwin's contribution and the accumulation of evidence across disciplines. It presents astronomical and geological origins, the fossil record and comparative anatomy, embryology, vestigial structures, and stages of vertebrate and mammal evolution with many illustrations. Human origins and fossil hominids are discussed alongside examples of domestication and variation in plants and animals. The narrative links historical ideas and empirical findings to explain how natural processes account for biological diversity and change.