Energy & Green Tech
For the first time, researchers in Germany sent perovskite and organic solar cells on a rocket into space. The solar cells withstood the extreme conditions in space, producing power from direct sunlight and reflective light ...
Aug 12, 2020
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241
Energy & Green Tech
Scientists in Australia and the United States have been able to 'upconvert' low energy light into high energy light, which can be captured by solar cells, in a new way, with oxygen the surprise secret ingredient. The results ...
Jul 20, 2020
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710
Electronics & Semiconductors
Scientists have managed to draw at high resolution and speed, local patterns in organic semiconductor films used in optoelectronic and photonic applications. The new method enables the patterning of material characteristics ...
Jul 17, 2020
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183
Internet
On Feb. 11, 2020, the World Health Organization put a name to the mysterious respiratory disease spreading with alarming speed around the globe: COVID-19.
Jul 3, 2020
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427
Computer Sciences
In an initial study conducted at the University of Notre Dame, researchers found that least-biased news sources and scientific-based news sources published less than a quarter of all stories currently available about COVID-19. ...
Jun 30, 2020
4
77
Computer Sciences
An important aspect of treating patients with conditions like diabetes and heart disease is helping them stay healthy outside of the hospital—before they to return to the doctor's office with further complications.
Jun 19, 2020
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82
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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26
Engineering
Mosquito-transmitted diseases such as malaria, dengue and yellow fever are responsible for hundreds of thousands of deaths every year, according to the World Health Organization (WHO). A new low-cost imaging system could ...
Apr 16, 2020
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266
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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59
Internet
There is no tragedy serious enough that creeps somewhere around the world won't take advantage of. The cybersecurity organization Bitdefender reported this week that phishing scams preying on people's fears about coronavirus ...
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
