Question: What was the field of work of the man who figured out the mechanism of evolution known as natural selection?

full_context: Document 1: Max Born Medal and Prize: The Max Born Medal and Prize is a scientific prize awarded yearly by the German Physical Society (DPG) and the British Institute of Physics (IOP) in memory of the German physicist Max Born. The terms of the award are that it is "to be presented for outstanding contributions to physics". The award goes to physicists based in Germany and in the UK or Ireland in alternate years.
Document 2: Evolution: In the mid-19th century, Charles Darwin formulated the scientific theory of evolution by natural selection, published in his book On the Origin of Species (1859). Evolution by natural selection is a process first demonstrated by the observation that often, more offspring are produced than can possibly survive. This is followed by three observable facts about living organisms: 1) traits vary among individuals with respect to morphology, physiology, and behaviour (phenotypic variation), 2) different traits confer different rates of survival and reproduction (differential fitness), and 3) traits can be passed from generation to generation (heritability of fitness). Thus, in successive generations members of a population are replaced by progeny of parents better adapted to survive and reproduce in the biophysical environment in which natural selection takes place.
Document 3: Herschel Medal: The Herschel Medal is awarded by the Royal Astronomical Society (RAS) for "investigations of outstanding merit in observational astrophysics". It is awarded for a single piece of work so that younger scientists can be candidates for the award. It is named after the RAS's first president, William Herschel. The medal was first awarded in 1974. The medal has been shared twice, in 1977 and 1986. It has been awarded 22 times to a total of 24 people (23 men, one woman), mostly from the UK.
Document 4: Darwin Awards: The project became more formalized with the creation of a website in 1993, and followed up by a series of books starting in 2000, authored by Wendy Northcutt. The criterion for the awards states, "In the spirit of Charles Darwin, the Darwin Awards commemorate individuals who protect our gene pool by making the ultimate sacrifice of their own lives. Darwin Award winners eliminate themselves in an extraordinarily idiotic manner, thereby improving our species' chances of long-term survival."
Document 5: Darwinism: Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809 -- 1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce. Also called Darwinian theory, it originally included the broad concepts of transmutation of species or of evolution which gained general scientific acceptance after Darwin published On the Origin of Species in 1859, including concepts which predated Darwin's theories. It subsequently referred to the specific concepts of natural selection, the Weismann barrier, or the central dogma of molecular biology. Though the term usually refers strictly to biological evolution, creationists have appropriated it to refer to the origin of life, and it has even been applied to concepts of cosmic evolution, both of which have no connection to Darwin's work. It is therefore considered the belief and acceptance of Darwin's and of his predecessors' work -- in place of other theories, including divine design and extraterrestrial origins.
Document 6: Darwin Medal: The Darwin Medal is awarded by the Royal Society every alternate year for "work of acknowledged distinction in the broad area of biology in which Charles Darwin worked, notably in evolution, population biology, organismal biology and biological diversity". First awarded in 1890, it was created in memory of Charles Darwin and is presented with a £2000 prize (as of 2016).
Document 7: Natural selection: Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Charles Darwin popularised the term ``natural selection '', contrasting it with artificial selection, which is intentional, whereas natural selection is not.
Document 8: Survival of the fittest: Herbert Spencer first used the phrase, after reading Charles Darwin's On the Origin of Species, in his Principles of Biology (1864), in which he drew parallels between his own economic theories and Darwin's biological ones: ``This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection', or the preservation of favoured races in the struggle for life. ''
Document 9: Natural selection: Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in heritable traits of a population over time. Charles Darwin popularised the term ``natural selection '', and compared it with artificial selection.
Document 10: Price Medal: Price Medal is a medal of the Royal Astronomical Society, for investigations of outstanding merit in solid-earth geophysics, oceanography, or planetary sciences. The medal is named after Albert Thomas Price. It was first awarded in 1994 and was initially given every three years. In 2005 this switched to every two years, and from 2014 it has been awarded every year.
Document 11: GlaxoSmithKline Prize: The GlaxoSmithKline Prize and Lecture is awarded by the Royal Society of London "for original contributions to medical and veterinary sciences published within ten years from the date of the award". Sponsored by GlaxoSmithKline, the medal is awarded with a gift of £2500. The medal was first awarded in 1980 to César Milstein "in recognition of his pioneering the production of monoclonal antibodies from hybrid cell lines and initiating their application worldwide in many fields of biology and medicine", and has since been awarded 13 times.
Document 12: Cantor medal: The Cantor medal of the Deutsche Mathematiker-Vereinigung is named in honor of Georg Cantor, the first president of the DMV. It is awarded at most every second year during the yearly meetings of the society. The prize winners are mathematicians who are associated with the German language.
Document 13: On the Origin of Species: Later chapters provide evidence that evolution has occurred, supporting the idea of branching, adaptive evolution without directly proving that selection is the mechanism. Darwin presents supporting facts drawn from many disciplines, showing that his theory could explain a myriad of observations from many fields of natural history that were inexplicable under the alternate concept that species had been individually created. The structure of Darwin's argument showed the influence of John Herschel, whose philosophy of science maintained that a mechanism could be called a vera causa (true cause) if three things could be demonstrated: its existence in nature, its ability to produce the effects of interest, and its ability to explain a wide range of observations.
Document 14: On the Origin of Species: On the Origin of Species The title page of the 1859 edition of On the Origin of Species Author Charles Darwin Country United Kingdom of Great Britain and Ireland Language English Subject Natural selection Evolutionary biology Published 24 November 1859 (John Murray) Media type Print (Hardback) Pages 502 OCLC 352242 Preceded by On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection Followed by Fertilisation of Orchids
Document 15: On the Origin of Species: Chapter I covers animal husbandry and plant breeding, going back to ancient Egypt. Darwin discusses contemporary opinions on the origins of different breeds under cultivation to argue that many have been produced from common ancestors by selective breeding. As an illustration of artificial selection, he describes fancy pigeon breeding, noting that "[t]he diversity of the breeds is something astonishing", yet all were descended from one species of rock pigeon. Darwin saw two distinct kinds of variation: (1) rare abrupt changes he called "sports" or "monstrosities" (example: ancon sheep with short legs), and (2) ubiquitous small differences (example: slightly shorter or longer bill of pigeons). Both types of hereditary changes can be used by breeders. However, for Darwin the small changes were most important in evolution.
ground_truth: bio
sub_queries: who figured out the mechanism of evolution known as natural selection Answer: Charles Darwin
Charles Darwin >> field of work Answer: bio