On the Origin of Species: By Means of Natural Selection

"On the Origin of Species" by Charles Darwin is a foundational work in the field of evolutionary biology, presenting the theory that species evolve over generations through natural selection. Drawing on evidence from his Beagle expedition and subsequent research, Darwin explains how diverse life forms share common ancestors and adapt over time. His ideas, including the concept of "survival of the fittest," have significantly shaped scientific understanding and sparked widespread discussion.