Security
Hundreds of US municipalities, schools and health organizations have been hit by ransomware in 2019, leading to massive service disruptions, researchers said Tuesday.
Oct 1, 2019
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Security
Researchers at the University of Luxembourg have discovered a flaw in the security standard of biometric e-passports that has been used worldwide since 2004. This standard, ICAO 9303, allows e-passport readers at airports ...
Sep 26, 2019
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28
Engineering
Scientists at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have developed the first microchip valve powered by living cells. Earthworm muscle tissue allowed for a high contractile force that could be sustained ...
Jul 9, 2019
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156
Software
Apple on Monday announced the demise of its groundbreaking iTunes platform in favor of three more tailored apps, as it refines its offerings to be a stage for digital music, films, podcasts and more.
Jun 4, 2019
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Energy & Green Tech
Hydrogen is a critical component in the manufacture of thousands of common products from plastic to fertilizers, but producing pure hydrogen is expensive and energy intensive. Now, a research team at Princeton University ...
Apr 29, 2019
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Engineering
More than 113,000 people are currently on the national transplant list. And with a shortage of donors, this means that about 20 people will die every day while waiting for an organ, according to the U.S. Department of Health.
Apr 22, 2019
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566
Energy & Green Tech
A team of researchers affiliated with several institutions in the U.S. has found a way to improve the efficiency of perovskite-based solar cells—by adding guanidinium thiocyanate to the mix. In their paper published in ...
Engineering
Researchers at Binghamton University, State University of New York, have developed skin-inspired electronics to conform to the skin, allowing for long-term, high-performance, real-time wound monitoring in users.
Apr 2, 2019
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222
Electronics & Semiconductors
Researchers have found that certain organic semiconducting materials can transport spin faster than they conduct charge, a phenomenon which could eventually power faster, more energy-efficient computers.
Mar 26, 2019
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349
Energy & Green Tech
Batteries power most of our devices, and even some cars. But researchers now report in ACS Applied Materials & Interfaces a step toward running electronic devices in homes and offices on the light coming from lamps scattered ...
Mar 13, 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
