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This book covers the crucial role of evolutionary biology in transforming our view of human origins and relation to the universe, and its impact on traditional philosophy and religion. Furthermore, it explains the most important basic findings and procedures in the area, and how it has developed since the first publications of Darwin and Wallace 150 years ago 1. Introduction 2. The Processes of Evolution 3. The Evidence for Evolution: Similarities and Differences Between Organisms 4. The Evidence for Evolution: Patterns in Time and Space 5. Adaptation and Natural Selection 6. The Formation and Divergence of Species 7. Some Difficult Problems Further Reading Less than 450 years ago, all European scholars believed that the earth was the centre of a universe that was at most a few million miles in extent, and that the planets, sun, and stars all rotated around this centre. Less than 250 years ago, they believed that the universe was created essentially in its present state about 6000 years ago. Less than 150 years ago, the special creation by God of living species was still dominant.The relentless application of the scientific method of inference from experiment and observation, without reference to religious, or governmental authority has completely transformed our view of our origins and relation to the universe, in less than 500 years. Few would dispute that this programme has been spectacularly successful, particularly in the twentieth century.This book is about the crucial role of evolutionary biology in transforming our view of human origins and relation to the universe, and the impact of this idea on traditional philosophy and religion. The purpose of this book is to introduce the general reader to some of the most important basic findings, concepts, and procedures of evolutionary biology, as it has developed since the first publications of Darwin and Wallace on the subject, over 140 years ago. Evolution provides a unifying set o