Biology

Polyonyx socialis inhabits the compact tube-like shelters built by the polychaete worm, Chaetopterus sp., often sharing it with the larger porcelain crab species, Polyonyx heok. Credit: T. Britayev and D. Martin More Two new porcelain crab species have been described in the ZooKeys journal by scientists from the Smithsonian Tropical Research Institute (STRI) and the
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A CT-scanned image of the piranha Serrasalmus medinai. Note the ingested fish fins in its stomach. Credit: University of Washington More Piranha fish have a powerful bite. Their teeth help them shred through the flesh of their prey or even scrape plants off rocks to supplement their diet. Years ago, scientists discovered that piranhas lose
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C16-K1 assembly images showing high aspect transformations to cochleate with increasing salt concentration. Credit: Northwestern University More Northwestern Engineering materials science researchers have uncovered new insights into how electrostatic interactions can be regulated to attain and control scroll-like cochleate structures, which could inform how to capture and release macromolecules in a size-selective manner as part
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Paint samples taken from the column capital. Under the green paint layer is a beige layer, interpreted as a ground applied to prepare the stone surface before painting. Credit: Ole Haupt/SDU Archaeologists have long known that artefacts from the Antiquity were far more colorful than one would think when looking at the bright white statues
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Collection of objects was found by divers in the Tollense river and is probably the contents of a personal pouch of a warrior who died 3,300 years ago on the battlefield. Credit: Volker Minkus Recent archaeological investigations in the Tollense Valley led by the University of Göttingen, the State Agency for Cultural Heritage in Mecklenburg-Vorpommern
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While many people love colorful photos of landscapes, flowers or rainbows, some biomedical researchers treasure vivid images on a much smaller scale—as tiny as one-thousandth the width of a human hair. To study the micro world and help advance medical knowledge and treatments, these scientists use fluorescent nano-sized particles. Quantum dots are one type of
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Setup of the microrobot-assisted high-precision wet transfer. (A) Magnetically controlled microrobots via an external magnet to align a floating 2D device on a target substrate (e.g., optical fiber and 3D microdevice). (B) View of the microrobot structure in which iron lines trapped in an elastomer matrix are used to store a preferred magnetization direction. (C)
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Penicillium sp. (stained, under the microscope). Credit: Peter Halasz, Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license. More The flavors of fermented foods are heavily shaped by the fungi that grow on them, but the evolutionary origins of those fungi aren’t well understood. Experimental findings published this week in mBio offer
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The cell nuclei are shown in blue. Credit: © K. Piotrowitz/AG Thiele More Without fat, nothing works in the body: Fats serve as energy suppliers and important building blocks, including for the envelopes of living cells. Numerous diseases are related to disorders in fat metabolism such as obesity and cancer. Researchers from the LIMES Institute
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Habitable zone for planets embedded in a thin accretion disk around a Kerr black hole with a/M = 1 and mass 108 M☉ (solid lines, yellow shading) and 109 M☉ (dashed lines, red shading). Credit: arXiv:1910.00940 [physics.pop-ph] More Jeremy Schnittman, an astrophysicist at NASA’s Goddard Space Flight Center has taken what he describes as a
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Liquid-Cell Electron Tomography (LC-ET) offers an exciting technical advance to study dynamic materials in solution. The figure illustrates how LC-ET was used to define the “rules of engagement” for pathogenic phages and its host bacterium. Credit: Kelly Lab/Penn State More A new liquid-cell technology allows scientists to see living biological materials and systems in three
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University of Hawai’i at Mānoa’s Marine Mammal Research Program (MMRP) researchers and key collaborators captured amazing whale’s-point-of-view and aerial drone video of humpback whale bubble-net feeding. It’s one component of a project investigating causes of a possible decline in humpback whale numbers They used suction-cup tags fitted with cameras and sensors to gain an understanding
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The Indianapolis Zoo plans to open an international center devoted to saving threatened species, an effort that zoo officials call a natural extension of their biennial Indianapolis Prize honoring animal conservation leaders. The Global Center for Species Survival is expected to open next year and employ a team of nine Indianapolis-based experts who will work
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Residents managed to save ten whales, all roughly three to four metres long, stranded on an eastern Indonesian beach More Seven pilot whales were found dead on an eastern Indonesian beach, an official said Saturday, after 17 were stranded in the remote area. Residents of nearby Menia Village managed to save ten of the whales, all
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