Ships harness wind for voyage to a cleaner future
New sails and boat designs are set to help shipowners slash fuel costs and emissions.
Mar 13, 2023
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New sails and boat designs are set to help shipowners slash fuel costs and emissions.
Mar 13, 2023
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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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As part of the SimPerm project, researchers at the Fraunhofer Institute for Material and Beam Technology IWS in Dresden have developed an innovative measuring technique for reliably determining the permeation rate of films. ...
Mar 2, 2023
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The EU is preparing to abandon its longstanding restrictions on state aid to take on US and Chinese subsidies over green technologies. European Commission president Ursula von der Leyen is spearheading a new commitment from ...
Feb 22, 2023
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Biofouling is the growth of algae, mussels, and other marine organisms on the hull of a ship. The fouling increases the flow resistance of the ship—and thus increases fuel consumption and CO2 emissions. Mechanical cleaning ...
Feb 21, 2023
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Sailing cargo ships are making a genuine comeback.
Feb 14, 2023
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In the last 200 years, society has undergone major energy transitions associated with introducing new energy sources, such as coal, oil and natural gas. To address climate change, the world must experience another energy ...
Feb 8, 2023
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In recent years, environmental problems caused by global warming have become more apparent due to greenhouse gases such as CO2. In natural photosynthesis, CO2 is not reduced directly, but is bound to organic compounds that ...
Jan 25, 2023
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Ships are a major means of commercial transport, contributing to 80% of global goods and energy trade. However, they emit exhaust gases—from the engines when they are sailing, and from the engines and boiler when they dock ...
Jan 4, 2023
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Flow batteries (FBs) are promising in large-scale energy storage due to their high security and effectiveness. Among them, aqueous organic flow batteries (AOFBs) that utilize structural tunable and eco-friendly redox-active ...
Dec 8, 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.
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