"Origin of Species" refers to Charles Darwin's groundbreaking work titled "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life," published in 1859. In this seminal scientific work, Darwin presented his theory of evolution through natural selection, challenging prevailing views on the origin and diversity of species. Darwin proposed that species evolve over time through the differential survival and reproduction of organisms with advantageous traits. This revolutionary idea laid the foundation for modern evolutionary biology, sparking debates and discussions that continue to shape our understanding of life's diversity and interconnectedness. "Origin of Species" remains a cornerstone in the history of science, influencing fields beyond biology and leaving an enduring impact on our comprehension of the natural world.