The Origin of Species
by Charles Darwin
Charles Darwin's groundbreaking work on evolutionary biology, The Origin of Species, presents a scientific theory of evolution that states that species evolve over generations through the process of natural selection. Darwin's theories were accepted as fact by the scientific community and laid the foundation for subsequent great advances in the field of biology. This is perhaps one of the most important scientific theses ever written. This is the sixth edition of the formative text of evolutionary biology.