On the Origin of Species

On the Origin of Species (or more completely On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life) published on 24 November 1859 is a work of scientific literature by Charles Darwin that is considered to be the foundation of evolutionary biology. Darwins book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection. The book presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution. Darwin included evidence that he had collected on the Beagle expedition in the 1830s and his subsequent findings from research correspondence and experimentation.