Energy & Green Tech
Climate change risks undermining global energy security unless the use of renewables is dramatically scaled up, the UN warned Tuesday, suggesting the Ukraine conflict's ripple effects could speed up the green transition.
Oct 11, 2022
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Energy & Green Tech
UN aviation agency members reached an agreement Friday to try to achieve by 2050 net-zero carbon emissions in air travel—often criticized for its outsized role in climate change.
Oct 7, 2022
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Engineering
A team of researchers has designed a high-performance composite sponge that works effectively to filter particulate matter in high temperature and high humidity environments. The sponge, with its excellent mechanical properties, ...
Oct 3, 2022
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102
Energy & Green Tech
Electric planes might seem futuristic, but they aren't that far off, at least for short hops.
Sep 20, 2022
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Engineering
Clean water is essential for human survival. However, less than 3% of fresh water can be used as drinking water. According to a report published by the World Meteorological Organization, there is scarcity of drinking water ...
Aug 25, 2022
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Automotive
A new tax credit for U.S. buyers of qualifying electric vehicles made in North America has ignited the specter of a trade war as a domestic imperative of the Biden administration and Democrats collides with the complex realities ...
Aug 24, 2022
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Engineering
Organic solar cells (OSCs), which make use of organic materials to convert sunlight into electricity, are an attractive candidate for future photovoltaics. This is due to several of their desirable features, such as their ...
Aug 16, 2022
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Electronics & Semiconductors
Solar cells based on organic molecules offer potential advantages over conventional devices for converting light into electricity. These organic solar cells could be inexpensive, durable, and easy to make. However, organic ...
Aug 15, 2022
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Consumer & Gadgets
Throughout the course of history, technology has continually transformed the news media industry—telegraph, radio, television and then the internet. Yet despite these evolutions, technology remained the medium and human ...
Aug 3, 2022
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Business
Meta Platforms says it will no longer pay U.S. news organizations to have their material appear in Facebook's News Tab as it reallocates resources in the face of the economic downturn and changing user behavior.
Jul 28, 2022
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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
