Charles Darwin (1809-1882), born in Shrewsbury, England, developed the theory of evolution through natural selection during his five-year voyage aboard the HMS Beagle (1831-1836). This expedition to the Galápagos Islands, off the coast of Ecuador, provided crucial observations that transformed biology.

Key Publications

• On the Origin of Species by Means of Natural Selection (1859) - published in London, sold 1,250 copies on its first day
• The Descent of Man, and Selection in Relation to Sex (1871) - extended evolutionary theory to human origins
• The Expression of Emotions in Man and Animals (1872)

Core Concept

Darwin proposed that species evolve over time through natural selection, where organisms with advantageous traits survive and reproduce more successfully. His observations of finch beak variations in the Galápagos Islands demonstrated how environmental pressures shape species adaptation. Darwin documented 13 distinct finch species with beaks varying from 8 to 20 millimeters in length.

Recognition and Legacy

The Royal Society of London awarded Darwin the Copley Medal in 1864 for his scientific contributions. He was buried in Westminster Abbey in 1882, receiving honors typically reserved for national figures. On the Origin of Species fundamentally challenged religious interpretations of creation and established evolutionary biology as a cornerstone of modern science.

Reference:

Wikipedia reference

https://en.wikipedia.org/wiki/Darwinian_Evolution