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Charles Darwin
1809–1882 · Naturalist & Biologist
Charles Darwin transformed our understanding of life on Earth by showing that species evolve over generations through natural selection.
“There is grandeur in this view of life.”
Why is this scientist famous?
Proposing the theory of evolution by natural selection.
Darwin's theory of evolution by natural selection explains how life adapts — including how bacteria evolve to resist antibiotics and how viruses change over time. Understanding evolution helps doctors fight diseases and conservationists protect endangered species. Every time you hear about a new virus variant, you are seeing evolution in action.
Charles's story
Early Life
Born in Shrewsbury, England, into a wealthy, educated family. Young Charles was an unremarkable student, more interested in beetles and shooting than in medicine or theology, to his father's despair. He enrolled at Edinburgh to study medicine but was horrified by surgery before anaesthesia, and switched to Cambridge for divinity, where his passion for natural history flourished under the mentorship of botanist John Stevens Henslow.
The Beagle Voyage
In 1831, Darwin joined HMS Beagle on a five-year surveying voyage as a gentleman companion to Captain Robert FitzRoy and as an enthusiastic naturalist. He collected specimens and made extensive geological and biological observations. In the Galápagos he was particularly struck by differences among mockingbirds from different islands. The famous Galápagos finches became important later, after ornithologist John Gould showed that birds Darwin had initially classified in different groups were actually closely related species.
Twenty Years of Doubt
After returning to England, Darwin gradually developed his theory of natural selection while gathering evidence from geology, animal breeding, botany and many other fields. He wrote private sketches of his theory in 1842 and 1844 and began a much larger book on species in 1856. In 1858 Alfred Russel Wallace independently sent Darwin an essay describing a remarkably similar mechanism of natural selection. Papers by Darwin and Wallace were then presented jointly to the Linnean Society. Darwin followed with On the Origin of Species in 1859.
The Storm that Followed
On the Origin of Species generated intense scientific, religious and public debate. Darwin generally avoided public confrontation himself, while supporters including Thomas Henry Huxley defended evolutionary ideas. A famous discussion took place at Oxford in 1860 between Huxley, Bishop Samuel Wilberforce and others, although later retellings of exactly what was said are not completely reliable.
Later Works
Darwin continued researching and publishing prolifically. In 1871 he published 'The Descent of Man,' explicitly applying evolution to human beings. He wrote groundbreaking books on orchids, insectivorous plants, climbing plants, the expression of emotions in humans and animals, and the action of earthworms in forming soil. His experimental approach to these subjects was as innovative as his evolutionary theory.
Legacy
Darwin's theory of evolution by natural selection became the unifying principle of all biology, connecting genetics, palaeontology, ecology, and medicine. He died in 1882 and, by parliamentary petition, was buried in Westminster Abbey near Isaac Newton — an honour his modest, reclusive nature would never have sought. His home, Down House in Kent, is preserved by English Heritage, where visitors can see the house, gardens and recreated experiments associated with his scientific work.
What did they discover?
Evolution by Natural Selection
Proposed that organisms with traits suited to their environment survive and reproduce, passing those traits to offspring. Over vast time, this produces new species — the central mechanism of evolution.
Common Descent
Showed that all living things share common ancestors, meaning every species on Earth is related — a profoundly unifying insight that connected all of biology.
Galápagos Observations
His observations and collections from the Galápagos, especially differences among island mockingbirds, helped raise questions about how species change. The finches became important evidence later after John Gould identified them as closely related species.
Sexual Selection
Identified a second mechanism of evolution in which mate choice drives the development of traits like peacock tails, even when they seem to reduce survival.
Earthworms and Soil Formation
His final book showed that earthworms are major geological agents, gradually transforming soil and burying ancient structures over centuries.
Amazing facts
He and Abraham Lincoln were born on the exact same day: 12 February 1809.
As a Cambridge student Darwin belonged to a dining group sometimes called the Glutton Club, whose members tried unusual foods. During his travels he also sampled several unfamiliar animals.
Darwin developed natural selection for about two decades before publishing On the Origin of Species, spending much of that time gathering evidence and refining his arguments.
He married his first cousin Emma Wedgwood and had ten children.
His journey on HMS Beagle lasted nearly five years, from 1831 to 1836.
He is buried in Westminster Abbey near Isaac Newton.
Darwin experienced recurring ill health for much of his adult life, but historians and doctors have never agreed on a single definite diagnosis.
He kept pigeons in his garden to study how breeds change over generations — a living analogy for natural selection.
On the Origin of Species contained a single diagram showing branching descent, illustrating Darwin's idea that species diverge from common ancestors.
Darwin's religious views changed gradually over many years. The death of his daughter Annie in 1851 was one of several experiences that deeply affected him.
Timeline
Born in Shrewsbury, England
Went to Edinburgh to study medicine, but was horrified by surgery
Transferred to Cambridge to study divinity
Joined HMS Beagle as Captain FitzRoy's gentleman companion and a naturalist on a five-year surveying voyage
Visited the Galápagos Islands and collected birds and other specimens, including mockingbirds and finches
Returned to England with extensive specimens and notes
Moved to Down House in Kent, where he worked for the rest of his life
Darwin and Alfred Russel Wallace’s papers on natural selection are read at the Linnean Society; neither scientist attends the meeting.
Published 'On the Origin of Species'; the first edition was immediately in very high demand
The famous Oxford debate between Huxley and Wilberforce
Published 'The Descent of Man', applying evolution to humans
Published his final book on earthworms and soil formation
Died at Down House on 19 April; buried in Westminster Abbey on 26 April 1882.
Awards & honours
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