![]() ![]() During that time, he overcame countless wrong turns, criticisms, and mental blocks. In other words, Darwin spent more than twenty years working and reworking his ideas. Not until 1859 did he publish his masterpiece, On the Origin of Species. ![]() Upon his return to land, Darwin worked vigorously on the theory, making significant gains between 18. The ship set sail in 1831, but it wasn’t until 1835, on a visit to the Galapagos Islands toward the end of the voyage, that Darwin began to formulate his theory of natural selection, which at the time was referred to as “transmutation of species.” It took him more than four years at sea before his revolutionary insight began to take shape. ![]() As a young geologist, Charles Darwin spent nearly five years on the HMS Beagle, a large ship circumnavigating the globe on a far-reaching scientific expedition. ![]()
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