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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Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms. For example, any atom that contains 11 protons is sodium, and any atom that contains 29 protons is copper. Atoms with the same number of protons but a different number of neutrons are called isotopes of the same element. (Full article...)
Did you know...
- ... that the board game Cytosis was endorsed by the Journal of Cell Science?
- ... that after men took all the 2021 Nobel Prizes for science, one of the selectors, Eva Olsson, said "we want to have more women nominated"?
- ... that Ladislav Burlas, a musicologist at the Slovak Academy of Sciences for almost 40 years, wrote more than 150 works during his career?
- ... that machine learning can be used to recognize rock fractures?
- ... that the Data Colada bloggers drew attention to the replication crisis by exposing faulty social science research?
- ... that physicist Sabine Hossenfelder's book Existential Physics discusses whether free will, the multiverse, the existence of God, and the meaning of life are topics that science can answer?
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Science News
- 23 September 2024 – Deforestation of the Amazon rainforest
- Climate researchers report that since 1985, deforestation in the Amazon has caused the loss of an area of rainforest equal to the combined area of France and Germany. (France 24)
- 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)