On the Origin of Species

In On the Origin of Species, Charles Darwin presents his groundbreaking theory of evolution by natural selection, which revolutionized biology and influenced contemporary thought. First published in 1859, the work argues that species evolve over time, with individuals possessing advantageous traits more likely to survive and reproduce, thereby passing these traits to future generations. Drawing on extensive evidence from various fields, Darwin challenges the notion of fixed species and lays the groundwork for modern evolutionary biology, genetics, and ecology.