Portal:History of science

Evolutionary thought, the recognition that species change over time and the perceived understanding of how such processes work, has roots in antiquity—in the ideas of the ancient Greeks, Romans, Chinese, Church Fathers as well as in medieval Islamic science. With the beginnings of modern biological taxonomy in the late 17th century, two opposed ideas influenced Western biological thinking: essentialism, the belief that every species has essential characteristics that are unalterable, a concept which had developed from medieval Aristotelian metaphysics, and that fit well with natural theology; and the development of the new anti-Aristotelian approach to modern science: as the Enlightenment progressed, evolutionary cosmology and the mechanical philosophy spread from the physical sciences to natural history. Naturalists began to focus on the variability of species; the emergence of palaeontology with the concept of extinction further undermined static views of nature. In the early 19th century prior to Darwinism, Jean-Baptiste Lamarck (1744–1829) proposed his theory of the transmutation of species, the first fully formed theory of evolution.

In 1858 Charles Darwin and Alfred Russel Wallace published a new evolutionary theory, explained in detail in Darwin's On the Origin of Species (1859). Darwin's theory, originally called descent with modification is known contemporarily as Darwinism or Darwinian theory. Unlike Lamarck, Darwin proposed common descent and a branching tree of life, meaning that two very different species could share a common ancestor. Darwin based his theory on the idea of natural selection: it synthesized a broad range of evidence from animal husbandry, biogeography, geology, morphology, and embryology. Debate over Darwin's work led to the rapid acceptance of the general concept of evolution, but the specific mechanism he proposed, natural selection, was not widely accepted until it was revived by developments in biology that occurred during the 1920s through the 1940s. Before that time most biologists regarded other factors as responsible for evolution. Alternatives to natural selection suggested during "the eclipse of Darwinism" (c. 1880 to 1920) included inheritance of acquired characteristics (neo-Lamarckism), an innate drive for change (orthogenesis), and sudden large mutations (saltationism). Mendelian genetics, a series of 19th-century experiments with pea plant variations rediscovered in 1900, was integrated with natural selection by Ronald Fisher, J. B. S. Haldane, and Sewall Wright during the 1910s to 1930s, and resulted in the founding of the new discipline of population genetics. During the 1930s and 1940s population genetics became integrated with other biological fields, resulting in a widely applicable theory of evolution that encompassed much of biology—the modern synthesis. (Full article...)

An Experiment on a Bird in the Air Pump is a 1768 oil-on-canvas painting by Joseph Wright of Derby which depicts a recreation of one of Robert Boyle's air pump experiments. It shows the reactions of a group of onlookers to an experiment performed by a natural philosopher in which a bird is deprived of oxygen. Scientific curiosity overcomes concern for the bird. The central figure looks out of the picture as if inviting the viewers participation in the outcome.

...that in the history of paleontology, very few naturalists before the 17th century recognized fossils as the remains of living organisms?

...that on January 17, 2007, the Doomsday Clock of the Bulletin of the Atomic Scientists moved to "5 minutes from midnight" in part because of global climate change?

...that in 1835, Caroline Herschel and Mary Fairfax Somerville became the first women scientists to be elected to the Royal Astronomical Society?

Detail from Portrait of Antoine-Laurent Lavoisier and his Wife by Jacques-Louis David

Antoine-Laurent de Lavoisier (/ləˈvwɑːzieɪ/ lə-VWAH-zee-ay; French: [ɑ̃twan lɔʁɑ̃ də lavwazje]; 26 August 1743 – 8 May 1794), also Antoine Lavoisier after the French Revolution, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology.

It is generally accepted that Lavoisier's great accomplishments in chemistry stem largely from his changing the science from a qualitative to a quantitative one. Lavoisier is most noted for his discovery of the role oxygen plays in combustion. He named oxygen (1778), recognizing it as an element, and also recognized hydrogen as an element (1783), opposing the phlogiston theory. Lavoisier helped construct the metric system, wrote the first extensive list of elements, and helped to reform chemical nomenclature. He predicted the existence of silicon (1787) and discovered that, although matter may change its form or shape, its mass always remains the same. His wife and laboratory assistant, Marie-Anne Paulze Lavoisier, became a renowned chemist in her own right. (Full article...)

• 1605 – Death of Ulisse Aldrovandi, Italian naturalist (b. 1522)

• 1695 – Birth of John Bevis, English physician and astronomer (d. 1771)

• 1918 – Birth of Ernst Otto Fischer, German chemist, Nobel Prize laureate (d. 2007)

• 1935 – Birth of Bernard Babior, American biochemist

• 1935 – Birth of Igor Dmitrievich Novikov, Russian astrophysicist

• 1951 – Direct-dial coast-to-coast telephone service begins in the United States

• 1990 – Death of Mário Schenberg, Brazilian physicist (b. 1914)