Energy & Green Tech
Every year, the nation's aviation industry uses around 22 billion gallons of jet fuel, which produces about 1 billion tons of carbon dioxide—or 3% of the world's carbon dioxide emissions. Because of this, researchers and ...
Apr 18, 2024
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Computer Sciences
Fast containment is key to halting the progression of pandemics, and rapid determination of a diagnosed patient's locations and contact history is a vital step for communities and cities. This process is labor-intensive, ...
Apr 13, 2020
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Internet
If young people are spending so much time on social media, it stands to reason that's a good place to reach them with news.
Mar 3, 2023
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Engineering
Material used in organic solar cells can also be used as light sensors in electronics. This has been shown by researchers at Linköping University, Sweden, who have developed a type of sensor able to detect circularly polarized ...
Sep 28, 2023
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Robotics
Robots that use artificial intelligence to recognise the health of fruit and vegetable crops and when they're ready to harvest are being trialled to help small, organic and greenhouse farmers with weeding and patrolling for ...
Apr 21, 2020
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Electronics & Semiconductors
Researchers at Linköping University, Sweden, have developed a new, more environmentally friendly way to create conductive inks for use in organic electronics such as solar cells, artificial neurons, and soft sensors. The ...
Jan 22, 2024
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Electronics & Semiconductors
Silicon has long been the conventional material of choice for solar cells, which convert energy from the sun into electricity. However, because light absorption in silicon is inefficient, solar cells made of silicon are thick, ...
Apr 29, 2020
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Engineering
New multidisciplinary research from the University of St Andrews could lead to more efficient televisions, computer screens, and lighting.
Mar 27, 2024
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Energy & Green Tech
Networked intelligent devices and sensors can improve the energy efficiency of consumer products and buildings by monitoring their consumption in real time. Miniature devices like these being developed under the concept of ...
Nov 3, 2023
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Energy & Green Tech
In Europe, transport is responsible for nearly 30% of the total CO2 emissions, of which 72% comes from road transportation. While the use of electric vehicles for personal transportation could help lower that number, reducing ...
Dec 23, 2019
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In biology, an organism is any living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many billions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.
The terms "organism" (Greek ὀργανισμός - organismos, from Ancient Greek ὄργανον - organon "organ, instrument, tool") first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary).
Scientific classification in biology considers organisms synonymous with life on Earth. Based on cell type, organisms may be divided into the prokaryotic and eukaryotic groups. The prokaryotes represent two separate domains, the Bacteria and Archaea. Eukaryotic organisms, with a membrane-bounded cell nucleus, also contain organelles, namely mitochondria and (in plants) plastids, generally considered to be derived from endosymbiotic bacteria. Fungi, animals and plants are examples of species that are eukaryotes.
More recently a clade, Neomura, has been proposed, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria.
This text uses material from Wikipedia, licensed under CC BY-SA
