Charles Darwin

Charles Darwin
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Name	Charles Darwin
Caption	Photograph by Julia Margaret Cameron, c. 1869
Birth date	12 February 1809
Birth place	Mount House, Shrewsbury, Shropshire, England
Death date	19 April 1882 (aged 73)
Death place	Down House, Downe, Kent, England
Fields	Natural history, Geology
Education	University of Edinburgh Medical School (medicine, no degree), Christ's College, Cambridge (BA, 1831; MA, 1836)
Known for	The Voyage of the Beagle, On the Origin of Species, The Descent of Man, and Selection in Relation to Sex
Spouse	Emma Wedgwood (m. 1839)
Children	10
Awards	FRS (1839), Royal Medal (1853), Wollaston Medal (1859), Copley Medal (1864)

Charles Darwin was an English naturalist, geologist, and biologist whose work fundamentally transformed our understanding of the natural world. He is best known for formulating the scientific theory of evolution by natural selection, a cornerstone of modern biology. His seminal work, On the Origin of Species, published in 1859, established that all species of life have descended over time from common ancestors. Darwin's extensive evidence and rigorous arguments provided a unifying explanation for the diversity of life on Earth.

Early life and education

Born at Mount House in Shrewsbury, he was the fifth of six children to wealthy society doctor and financier Robert Darwin and Susannah Wedgwood. After initially studying medicine at the University of Edinburgh Medical School alongside Robert Edmond Grant, he found the subject distasteful and neglected his studies. He subsequently enrolled at Christ's College, Cambridge with the intention of becoming an Anglican clergyman, where he became enthralled by the natural theology of William Paley and developed a passion for entomology under the mentorship of botanist John Stevens Henslow. His reading of Alexander von Humboldt's personal narrative of travels in the Americas further ignited his desire to travel and study natural history.

Voyage on HMS Beagle

In 1831, on the recommendation of John Stevens Henslow, he secured a position as a naturalist and gentleman companion to Captain Robert FitzRoy aboard HMS Beagle. The five-year surveying expedition circumnavigated the globe, with pivotal stops in South America, the Galápagos Islands, Tahiti, New Zealand, Australia, and the Cape of Good Hope. During the voyage, he made extensive geological observations, collected a vast array of fossils and living specimens, and meticulously recorded the distribution of wildlife. Key experiences, such as finding fossils of extinct megafauna in Patagonia and noting the variations among finch species on different Galápagos islands, planted the seeds for his revolutionary ideas. His detailed journal was later published as The Voyage of the Beagle.

Development of evolutionary theory

Upon returning to England in 1836, he began developing his theories, influenced by the principles of uniformitarianism from geologist Charles Lyell. The distribution of species, particularly the rheas of South America and the unique fauna of the Galápagos Islands, suggested transmutation. In 1838, reading An Essay on the Principle of Population by Thomas Robert Malthus gave him the mechanism for his theory: the "struggle for existence" and the survival of advantageous variations, which he termed natural selection. For two decades, he amassed evidence through experiments in artificial selection with pigeon breeders and extensive correspondence with experts like botanist Joseph Dalton Hooker and the comparative anatomist Thomas Henry Huxley.

Publication of On the Origin of Species

Spurred by receiving an essay from the naturalist Alfred Russel Wallace that outlined a similar theory, he presented their joint work to the Linnean Society of London in 1858. He then condensed his massive unpublished work into On the Origin of Species, published by John Murray on 24 November 1859. The book sold out immediately and sparked intense debate, challenging prevailing religious and scientific views on creationism. It was famously defended in a public debate at the University of Oxford in 1860 by Thomas Henry Huxley against Samuel Wilberforce, the Bishop of Oxford.

Later life and death

He continued his scientific work at Down House in Kent, publishing further volumes on orchid fertilization, climbing plants, and human evolution in The Descent of Man, and Selection in Relation to Sex (1871). His later botanical works, including The Power of Movement in Plants, were conducted with his son, Francis Darwin. Plagued by chronic illness for much of his adult life, he died at Down House on 19 April 1882. Following a campaign by parliamentary figures and scientists, he was accorded the honour of burial in Westminster Abbey, near the graves of John Herschel and Isaac Newton.

Legacy and recognition

His theory of evolution by natural selection became the foundational unifying principle of the life sciences, explaining the immense diversity of life. Major scientific developments, including the modern evolutionary synthesis and the discovery of DNA by James Watson and Francis Crick, have consistently reinforced and expanded upon his work. He has been commemorated widely, with numerous species, geographic features like Mount Darwin, and awards such as the Darwin Medal of the Royal Society named in his honour. His image has appeared on currency, including the Bank of England's ten-pound note, and his former home, Down House, is preserved as a museum by English Heritage.

Category:1809 births Category:1882 deaths Category:English naturalists Category:Alumni of Christ's College, Cambridge Category:Fellows of the Royal Society