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On The Origin Of Species, written by Charles Darwin, is a work of scientific literature which discusses at length the theory of natural selection and how species change over the course of generations. Summary Of The Book In On The Origin Of Species, Charles Darwin expands his theory about evolutionary adaptation via natural selection. From observations and facts that he amassed together from his travels to the Galapagos Islands and subsequent research, Darwin proposed his Theory of Evolution. In this version of Darwin’s book, editor William Bynum provides a brief introduction to Darwin’s life, the publication of his book, and the book’s reception. The editor has also included brief biographies of important scientists, as well as notes for further reading. Darwin’s theory of evolution had some basic tenets. Firstly, he claimed that every species was capable of reproducing in a manner that enables the population to grow. Secondly, despite fluctuations in population, the numbers stay the same and the resources needed for population sustainability remain stable over time. Thirdly, humans vary from one another due to inheritable traits. The rule of natural selection states that those who are the fittest and are able to adapt the quickest are more likely to remain alive and pass on these traits to their future offspring. The process of adapting and inheriting these variations is slow, but over time it contributes to the development of a new species. Lastly, Darwin claimed that life is a constant battle to survive, and is therefore a game of the survival of the fittest. Apart from his theory, Darwin also included several sketches he made from his observations. Many of these sketches were of variations between two similar species. His book also contained tree diagrams, which visually described the concept of inheriting variation. Darwin’s groundbreaking book was initially received with hostility, particularly by various Christian religious groups. Nevertheless, it brought about significant changes in the scientific community. The publication of On The Origin Of Species led to the creation of review journals. Darwin’s concept of natural selection was a testable theory, and by 1875 it was a widely accepted theory among scientists. Darwin’s work also formed the basis of the field of Evolutionary Biology. About Charles Darwin Charles Darwin was an author and notable naturalist, who hailed from England. He authored other titles such as The Voyage Of The Beagle, The Descent Of Man, The Formation Of Vegetable Mould Through The Action Of Worms and The Power Of Movement In Plants. After studying at the University of Edinburgh, Darwin attended the University of Cambridge, where he proceeded to completed a Bachelor of Arts degree. An invitation from Captain Robert FitzRoy to travel with him on the HMS Beagle and chart South America’s coastline, brought a turning point in Darwin’s life. It was his journey to the various islands near there, particularly to the Galapagos Islands, which inspired Darwin’s Theory of Evolution. When Darwin published his theory, it gained national and international notoriety. Darwin was married to his cousin Emma Wedgwood, and together they had ten children. Darwin passed away in April 1882 at the age of 73, due to heart failure.