Before you recruit Darwin, you should check what natural wonder you intend to use him on. Depending on your current Science output, expending him on a 1-tile wonder like Crater Lake may not be worth it. If you have easy access to a 4-tile wonder, however, Darwin should be a high priority. Below is a list of all of the natural wonders where Darwin can be activated to provide his maximum of 2,000 Science:
Another Industrial Era Great Scientist, James Young, provides two Eurekas from the Industrial or Modern Era. The most expensive Modern Era technologies cost 1250 Science each, so Young provides at most 1000 (1250 * 2 * 0.4) Science. Therefore, Charles Darwin is always a better choice if he can be activated with four adjacent natural wonder tiles. The exceptions are when playing as the Chinese or Babylonians or with the vanilla ruleset, in which case James Young can provide up to 1250 (1250 * 2 * 0.5) Science.
After a five-year voyage on the HMS Beagle, followed by years of thought, Charles Darwin published 'On the Origin of Species by Means of Natural Selection' in 1859 AD, and set off a philosophical and religious firestorm that has yet to abate.
Born 1809, Charles Robert Darwin was the fifth of six children, the next in a long line of scientists. Since his mother Susanna had died when the boy was eight, there was no cushion to the sharp edges of learning in his life. At the age of 16, Charles entered Edinburgh College and choose to immerse himself in natural history. Following graduation from Christ’s College at Cambridge in 1831, his professor recommended Charles for a naturalist’s position aboard a British Admiralty survey ship, set to voyage around the world. Through direct observation and the collection of samples (birds, mice, and other small once-living creatures), especially on the isolated Galapagos archipelago, Darwin began to evolve a theory. Upon his return, he wrote upon his musings in the 'Journal of Researches.'
In 1858, Darwin introduced his revolutionary theory of evolution in a letter read at a meeting of the Linnean Society of London, a “learned” body devoted to the study of taxonomy. The next year, built on the basis of this paper, the great book was published. Although Charles wrote a number of other treatises – notably 'The Descent of Man, and Selection in Relation to Sex,' which set off its own controversy among the Victorians – none were as evolutionary for civilization. Following a lifetime of research, Darwin died in London in April 1882.