Biology

Graphic depiction of the process of using cobalt- and manganese-doped nanoparticles to kill tumors via magnetic hyperthermia. Credit: Tetiana Korzun Researchers at Oregon State University have developed an improved technique for using magnetic nanoclusters to kill hard-to-reach tumors. Magnetic nanoparticles—tiny pieces of matter as small as one-billionth of a meter—have shown anti-cancer promise for tumors
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Credit: ACS Medical advancements can come at a physical cost. Often following diagnosis and treatment for cancer and other diseases, patients’ organs and cells can remain healed but damaged from the medical condition. In fact, one of the fastest growing medical markets is healing and/or replacing organs and cells already treated, yet remain damaged by
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Dopamine neurons in the mushroom body, pictured here, convey reward signals in the fly brain. Credit: Laboratory of Neurophysiology and Behavior at The Rockefeller University As animals explore their environment, they learn to master it. By discovering what sounds tend to precede predatorial attack, for example, or what smells predict dinner, they develop a kind
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Credit: NASA Archaeologists working in two Italian caves have discovered some of the earliest known examples of ancient humans using an adhesive on their stone tools—an important technological advance called “hafting.” The new study, which included CU Boulder’s Paola Villa, shows that Neanderthals living in Europe from about 55 to 40 thousand years ago traveled
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The archaeological site of ‘Ein Qashish in northern Israel was a place of repeated Neanderthal occupation and use during the Middle Paleolithic, according to a study released June 26, 2019 in the open-access journal PLOS ONE by Ravid Ekshtain of the Hebrew University of Jerusalem and colleagues. Credit: Ekshtain, 2019 The archaeological site of ‘Ein
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Illustration of marine fossils that have existed since the Cambrian. Represented taxa include brachiopods, trilobites, ammonites, bivalves, and decapods. Credit: Mesa Shumacher/Santa Fe Institute Throughout life’s history on earth, biological diversity has gone through ebbs and flows—periods of rapid evolution and of dramatic extinctions. We know this, at least in part, through the fossil record
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Anton Popov. Credit: AKSON Russian Science Communication Association Russian scientists found that nanocrystal tungsten trioxide can be used instead of barium for X-ray examinations and also in cancer treatment. The results of the study are published in Journal of Nanomaterials. Due to the physical-chemical properties of tungsten, in particular, the effective absorptive capacity of X-rays,
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A selection of the birds collected after the reported die-off following a drench application of imidacloprid. Credit: Krysta Rogers Researchers from the California Department of Fish and Wildlife’s Wildlife Investigations Laboratory present their results from a toxicological investigation into a mortality event involving songbirds in a new publication in Environmental Toxicology and Chemistry. On 17
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Fragment of Tarbosaurus lower jaw with teeth sampled (white stripes on tooth enamel). Credit: Senckenberg Together with an international team, Senckenberg scientist Hervé Bocherens studied the fossilized teeth of the carnivorous dinosaur Tarbosaurus bataar. Based on stable isotopes, the researchers were able to draw inferences regarding the habitat and feeding habits of this relative of
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Illustration of a growing fibril in the trap and the laser. Credit: Martin Fränzl More than 24 million people worldwide suffer from neurodegenerative diseases such as Alzheimer’s, Parkinson’s or Huntington’s. The molecular causes of these diseases have so far been little investigated. A team of scientists from Leipzig University and the Technical University of Dresden,
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This 3D rendering of a hillslope is combined with a reactive transport model simulation of oxygenated water flowing through rocky material. The distribution of oxygen is controlled by biological consumption, reactions with minerals in the rock, and the rock permeability. The color scale reflects the oxygenated water concentrations, where yellow is high and blue is
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Increasingly, shoppers are choosing nutraceuticals, cosmetics and herbal remedies with natural ingredients, and these products are readily available in many drug stores and supermarkets. But some consumers, health professionals and policy makers have raised concerns about the safety, quality and effectiveness of some of these health products. Now, researchers in ACS’ Journal of Agricultural and
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Researchers at MIT have developed a system for converting the molecular structures of proteins, the basic building blocks of all living beings, into audible sound that resembles musical passages. Then, reversing the process, they can introduce some variations into the music and convert it back into new proteins never before seen in nature. Credit: Zhao
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Artist’s concept of meteors impacting ancient Earth. Some scientists think such impacts may have delivered water and other molecules useful to emerging life on Earth. Credit: NASA’s Goddard Space Flight Center Conceptual Image Lab Cyanide and carbon monoxide are both deadly poisons to humans, but compounds containing iron, cyanide, and carbon monoxide discovered in carbon-rich
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A cicada clings to a blade of grass. Credit: Matt Kasson If cicadas made horror movies, they’d probably study the actions of their counterparts plagued by a certain psychedelic fungus. West Virginia University researchers have discovered that a cicada fungus called Massopora contains chemicals similar to those found in hallucinogenic mushrooms. The fungus causes cicadas
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