Portal:Science
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Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. Modern science is typically divided into two or three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology), which study individuals and societies. The formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as a separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. (Full article...)
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Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances. Chemistry also addresses the nature of chemical bonds in chemical compounds. (Full article...)
Did you know...
- ... that after Ursula K. Le Guin published her collection The Wind's Twelve Quarters, a reviewer called her the "ideal science fiction writer for readers who ordinarily dislike science fiction"?
- ... that the 14th-century house Maison de Jeanne was positively dated with the science of dendrochronology?
- ... that Charles Leslie Richardson was ordered to "make science fashionable in the army"?
- ... that a year after becoming the first woman president of the Canadian Political Science Association, Caroline Andrew moderated the first Canadian leaders' debate on women's issues?
- ... that Australian Madeleine Steere played water polo professionally in Turkey after studying biomolecular science in the United States?
- ... that Carl Freedman viewed science fiction as the most sound genre for academic study?
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Science News
- 22 September 2024 –
- Researchers from the University of Cape Town and the Max Planck Institute for Evolutionary Anthropology announce they have reconstructed the oldest human genome ever found, belonging to a man and a woman who lived about 10,000 years ago in the Mesolithic period. The prior oldest decoded genome was from about 2,000 years ago. (DW)
- 15 September 2024 – Polaris program
- The spacecraft of the Polaris Dawn private spaceflight mission operated by SpaceX returns to Earth after five days in orbit. (BBC News)
- 12 September 2024 – Polaris program
- American billionaire Jared Isaacman becomes the first person to perform a commercial spacewalk as part of the Polaris Dawn private spaceflight mission operated by SpaceX. (AP)
- 11 September 2024 – Spaceflight
- Following the launch of the Russian Soyuz MS-26 spacecraft from the Baikonur Cosmodrome in Kazakhstan, there were a record 19 people in outer space: the three astronauts on the MS-26 mission, three more on China's Tiangong space station, four people on the SpaceX Polaris Dawn mission, and nine more on board the International Space Station. (CollectSPACE)
- 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)