Portal:Science
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Science is a strict systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. Modern science is typically divided into three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems, governed by axioms and rules. There is disagreement whether the formal sciences are scientific disciplines, as they do not rely on empirical evidence. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as in engineering and medicine. (Full article...)
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A chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions. The basic particle that constitutes a chemical element is the atom. Elements are identified by the number of protons in their nucleus, known as the element's atomic number. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons in its nucleus. Atoms of the same element can have different numbers of neutrons in their nuclei, known as isotopes of the element. Two or more atoms can combine to form molecules. Chemical compounds are molecules made of atoms of different elements, while mixtures contain atoms of different elements not necessarily combined as molecules. Atoms can be transformed into different elements in nuclear reactions, which change an atom's atomic number. (Full article...)
Did you know...
- ... that Cambodia's first science-fiction film, Karmalink, combines Buddhist concepts of karma with themes of artificial intelligence?
- ... that at the age of 14, Jenny Suo conducted a science experiment that ultimately led to GlaxoSmithKline pleading guilty to breaching consumer protection laws?
- ... that examples of artificial planets in science fiction include Riverworld, the Well World, and the Death Star?
- ... that pacifist Theodora Wilson Wilson's science fiction book The Last Weapon was banned by the British Government in 1917?
- ... that Mary Clutter used her directorial position at the National Science Foundation to require scientific conferences to include women speakers when presenting research done by them?
- ... that Lawrence Watt-Evans's The Cyborg and the Sorcerers was his first work in the hard science fiction genre, but mixed in elements of fantasy?
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Science News
- 24 July 2024 –
- Researchers from the Scottish Association for Marine Science report evidence of dark oxygen being produced from metals on the seafloor. It was previously assumed that almost all the free oxygen (O
2) on Earth was created through photosynthesis, which requires sunlight. (NPR) - 23 July 2024 –
- A study by the Oswaldo Cruz Foundation finds thirteen Brazilian sharpnose sharks off the coast of Brazil with high levels of cocaine in their muscles and livers. Experts believe that the cocaine is making its way into the waters via illegal labs where the drug is manufactured or through the excrement of drug users. (BBC News)
- 15 July 2024 – Mare Tranquillitatis pit
- In the journal Nature Astronomy, American and Italian scientists announce the discovery of a lunar cave, approximately 250 miles (400 km) from the landing site of Apollo 11. (AP) (Nature Astronomy)
- 10 July 2024 –
- Researchers from Northwestern University Feinberg School of Medicine and Harvard Medical School publish a claim for the cause and curative path for the autoimmune disease systemic lupus erythematosus in the journal Nature. (Newsmax) (Nature)
- 3 July 2024 –
- Scientists announce the discovery of the world's oldest cave painting, depicting three people gathered around a large red pig, estimated to be at least 51,200 years old, in Leang Karampurang cave in the Maros-Pangkep region, South Sulawesi, Indonesia. (Al Jazeera)
- 20 June 2024 – 2024 in archosaur paleontology
- Researchers announce the discovery the Lokiceratops rangiformis, a dinosaur species named after the Norse god Loki, in North America. The findings are published in the journal PeerJ. (ABC News)