Science News Science News Respective post owners and feed distributors Tue, 22 Jan 2013 09:53:08 -0600 Feed Informer People with SARS-CoV-2 antibodies may have low risk of future infection, study finds ScienceDaily: Latest Science News urn:uuid:cebbc2ab-445e-3658-d47a-903089531496 Wed, 24 Feb 2021 13:35:32 -0600 People who have had evidence of a prior infection with SARS-CoV-2, the virus that causes COVID-19, appear to be well protected against being reinfected with the virus, at least for a few months, according to a new study. This finding may explain why reinfection appears to be relatively rare, and it could have important public health implications. How single celled algae rotate as they swim towards the light ScienceDaily: Latest Science News urn:uuid:b3a7721f-75b3-df10-53e5-0f718ede940f Wed, 24 Feb 2021 11:03:55 -0600 Scientists have made a pivotal breakthrough in the quest to understand how single-cell green algae are able to keep track of the light as they swim. New experiences enhance learning by resetting key brain circuit ScienceDaily: Latest Science News urn:uuid:bb31f4f0-03a9-1291-d821-11c52be759ca Wed, 24 Feb 2021 11:03:49 -0600 A study of spatial learning in mice shows that exposure to new experiences dampens established representations in the brain's hippocampus and prefrontal cortex, allowing the mice to learn new navigation strategies. Using a multipronged approach to investigate the diet of ancient dogs ScienceDaily: Latest Science News urn:uuid:4b45634d-53f3-b765-5599-de3407178996 Wed, 24 Feb 2021 11:03:38 -0600 A new study uses different techniques to improve the investigation of fossilized dog feces. Evidence of dynamic seasonal activity on a Martian sand dune ScienceDaily: Latest Science News urn:uuid:797625d9-285a-766b-47f2-bf3100aaa4fe Wed, 24 Feb 2021 11:03:32 -0600 A scientist examined 11 Mars years of image data to understand the seasonal processes that create linear gullies on the slopes of the megadune in the Russell crater on Mars. Scientists begin building highly accurate digital twin of our planet ScienceDaily: Latest Science News urn:uuid:713383fe-b6d8-4a99-196c-d02163174472 Wed, 24 Feb 2021 11:03:21 -0600 A digital twin of our planet is being designed to simulate Earth's climate system reaching into the future. It is a tool to support policy-?makers in taking appropriate measures to better prepare for extreme events. Human lung and brain organoids respond differently to SARS-CoV-2 infection in lab tests ScienceDaily: Latest Science News urn:uuid:1e968a53-923c-18c0-b644-4b30eee706d4 Wed, 24 Feb 2021 10:31:16 -0600 Researchers are using stem cell-derived organoids to study how SARS-CoV-2 interacts with various organ systems. Their findings may help explain the wide variety in COVID-19 symptoms and aid the search for therapies. Reactivating aging stem cells in the brain ScienceDaily: Latest Science News urn:uuid:fe3b3e92-a7f8-d355-765d-1f20ea368a98 Wed, 24 Feb 2021 10:30:59 -0600 As people get older, their neural stem cells lose the ability to proliferate and produce new neurons, leading to a decline in memory function. Researchers have now discovered a mechanism linked to stem cell aging - and how the production of neurons can be reactivated. From melody to language ScienceDaily: Latest Science News urn:uuid:f0fd9b29-b9a8-a4fb-15ab-e8ad4d369c61 Wed, 24 Feb 2021 09:09:04 -0600 In the process of developing language, the melody patterns that emerge in infants' vocalizations are a very important first step. A new study has shown that the complexity of these patterns rapidly increases in the first months. New fossil discovery illuminates the lives of the earliest primates ScienceDaily: Latest Science News urn:uuid:0950e791-d533-c3f2-ad98-5fabd53b7731 Wed, 24 Feb 2021 09:08:49 -0600 A new fossil discovery is central to primate ancestry and adds to our understanding of how life on land recovered after the Cretaceous-Paleogene extinction event 66 million years ago that wiped out all dinosaurs, except for birds. New study suggests supermassive black holes could form from dark matter ScienceDaily: Latest Science News urn:uuid:6715faa8-25e4-6a85-0033-5a7e79896303 Wed, 24 Feb 2021 09:08:35 -0600 A new theoretical study has proposed a novel mechanism for the creation of supermassive black holes from dark matter. The international team find that rather than the conventional formation scenarios involving 'normal' matter, supermassive black holes could instead form directly from dark matter in high density regions in the centres of galaxies. The result has key implications for cosmology in the early Universe. A space-time crystal ScienceDaily: Latest Science News urn:uuid:757fc3fe-dcec-d6f7-b055-4655bcdda302 Wed, 24 Feb 2021 09:08:32 -0600 A research team has succeeded in creating a micrometer-sized space-time crystal consisting of magnons at room temperature. With the help of a scanning transmission X-ray microscope, they were able to film the recurring periodic magnetization structure in a crystal. Evidence that Earth's first cells could have made specialized compartments ScienceDaily: Latest Science News urn:uuid:008bdd3b-1744-2b43-52e0-74c3a636b724 Wed, 24 Feb 2021 08:06:46 -0600 New research provides evidence that the "protocells" that formed around 3.8 billion years ago, before bacteria and single-celled organisms, could have had specialized bubble-like compartments that formed spontaneously, encapsulated small molecules, and formed "daughter" protocells. Changes in writing style provide clues to group identity ScienceDaily: Latest Science News urn:uuid:0288815f-75a0-1f53-bfec-e1f29a488330 Wed, 24 Feb 2021 08:06:14 -0600 Small changes to people's writing style can reveal which social group they 'belong to' at a given moment, new research shows. Recycle anaesthetics to reduce carbon emission of healthcare, study concludes ScienceDaily: Latest Science News urn:uuid:ab88d5b2-013c-848e-2e0e-620c1c6e81b3 Wed, 24 Feb 2021 08:06:11 -0600 New research has highlighted the value of recycling general anaesthetic used in routine operations. Fighting fit cockroaches have 'hidden strength' ScienceDaily: Latest Science News urn:uuid:92211cb4-66ca-1a3d-2458-737717b09eea Tue, 23 Feb 2021 18:24:51 -0600 A new study has discovered that not all cockroaches are equal and 'super athletes' are more likely to win physical mating battles. The researchers scored aggressive interactions and carried out CT-scans. They found that dominant males have larger respiratory systems than submissive males of an identical size. The increased ability to deliver oxygen to their body tissue may enhance the fighting ability of these dominant males, and therefore play a crucial role in sexual selection. How did dogs get to the Americas? An ancient bone fragment holds clues ScienceDaily: Latest Science News urn:uuid:08db1d88-c869-3665-d1bc-ecb432958692 Tue, 23 Feb 2021 18:24:42 -0600 Researchers analyzed the dog's mitochondrial genome, and concluded that the animal belonged to a lineage of dogs whose evolutionary history diverged from that of Siberian dogs as early as 16,700 years ago. The timing of that split coincides with a period when humans may have been migrating into North America along a coastal route that included Southeast Alaska. Conservation paradox - the pros and cons of recreational hunting ScienceDaily: Latest Science News urn:uuid:c894d5b1-d809-2a12-2beb-3a96737636b3 Tue, 23 Feb 2021 15:44:48 -0600 Scientists have reviewed more than 1,000 studies on recreational hunting -- the first such attempt to summarize the scientific literature examining the biodiversity and social effects of recreational hunting globally. New gene-editing tool allows for programming of sequential edits over time ScienceDaily: Latest Science News urn:uuid:03295e66-9f1d-39b5-b649-bbf2d73c0cca Tue, 23 Feb 2021 14:08:47 -0600 Researchers have discovered a new gene-editing technique that allows for the programming of sequential cuts -- or edits -- over time. Reclusive neutron star may have been found in famous supernova ScienceDaily: Latest Science News urn:uuid:61e00c40-fc29-a8be-7fc9-58e74ef57a3d Tue, 23 Feb 2021 12:55:33 -0600 Since astronomers captured the bright explosion of a star on February 24, 1987, researchers have been searching for the squashed stellar core that should have been left behind. A group of astronomers using data from NASA space missions and ground-based telescopes may have finally found it. Agile underwater glider could quietly survey the seas ScienceDaily: Latest Science News urn:uuid:ee01e175-dd47-c986-0ee0-d5b3f8688c90 Tue, 23 Feb 2021 12:53:45 -0600 Autonomous underwater vehicles have become versatile tools for exploring the seas. But they can be disruptive to the environment or have trouble traveling through confined spaces. Researchers are studying an alternative: highly maneuverable, low-cost underwater gliders that operate silently. How a single cell slime mold makes smart decisions without a central nervous system ScienceDaily: Latest Science News urn:uuid:96e840b6-9b38-ccf3-0b20-116b15cabedd Tue, 23 Feb 2021 11:16:43 -0600 Having a memory of past events enables us to take smarter decisions about the future. Researchers have now identified how the slime mold Physarum polycephalum saves memories - although it has no nervous system. A memory without a brain ScienceDaily: Latest Science News urn:uuid:ef282c84-8e2d-a0d2-9f9e-338467fec473 Tue, 23 Feb 2021 11:16:43 -0600 Researchers have identified how the slime mold Physarum polycephalum saves memories -- although it has no nervous system. Like wine, environmental conditions impact flavor of whiskey, study finds ScienceDaily: Latest Science News urn:uuid:ab34abab-ef8b-f5f3-43f8-0bd9b6b802ca Tue, 23 Feb 2021 11:16:29 -0600 Flavor differences in whiskey can be discerned based solely on the environment in which the barley used to make the whiskey is grown, a new study found. Kittens could hold key to understanding deadly diarrheal disease in children ScienceDaily: Latest Science News urn:uuid:c5d7e975-e048-9191-9cfe-1ea77025ba08 Tue, 23 Feb 2021 10:32:42 -0600 Kittens could be the model for understanding infectious, sometimes deadly, diarrheal disease in both animals and children. The way a fish swims reveals a lot about its personality, say scientists ScienceDaily: Latest Science News urn:uuid:1d9adf5f-1f20-dca1-307b-ae1e90a15608 Tue, 23 Feb 2021 10:07:33 -0600 Personality has been described in all sorts of animal species, from ants to apes. Some individuals are shy and sedentary, while others are bold and active. Now a new study has revealed that the way a fish swims tells us a lot about its personality. Researchers challenge the Conservation Reserve Program status quo to mitigate fossil fuels ScienceDaily: Latest Science News urn:uuid:dd2f899d-3b25-6f3a-a100-33a268fe40b1 Tue, 23 Feb 2021 10:07:29 -0600 Amid population expansion and severe climate conditions threatening agricultural productivity, sustainable food production is a national priority. Simultaneously, advances in bioenergy agriculture are necessary to move our energy sector away from fossil fuels. Spintronics: New production method makes crystalline microstructures universally usable ScienceDaily: Latest Science News urn:uuid:9358b90e-59cc-3538-cc23-a77c8ed0d046 Tue, 23 Feb 2021 10:07:21 -0600 New storage and information technology requires new higher performance materials. One of these materials is yttrium iron garnet, which has special magnetic properties. Thanks to a new process, it can now be transferred to any material. Developed by physicists, the method could advance the production of smaller, faster and more energy-efficient components for data storage and information processing. Low-level jets create winds of change for turbines ScienceDaily: Latest Science News urn:uuid:e6224e83-52cb-8fc0-2c43-5d316ca930e2 Tue, 23 Feb 2021 10:07:18 -0600 Global wind power capacity has increased more than fivefold over the past decade, leading to larger turbines, but low-level jets are one cause for concern. The effects of these strong, energetic wind flows depend on how high the wind flows are in relation to the turbines. Researchers considered three different scenarios in which the LLJs were above, below, and in the middle of the turbine rotors. DNA extracted from modern, ancient and fossil tropical shells ScienceDaily: Latest Science News urn:uuid:c5dbd719-83c6-986f-02f5-187337853562 Tue, 23 Feb 2021 10:07:15 -0600 The next time you eat seafood, think about the long-term effects. Will consistently eating the biggest fish or the biggest conch, mean that only the smaller individuals will have a chance to reproduce? Measuring hemoglobin levels with AI microscope, microfluidic chips ScienceDaily: Latest Science News urn:uuid:98946ca9-d30e-b811-fcf6-aa28d58cc927 Tue, 23 Feb 2021 10:07:10 -0600 A complete blood count can help ascertain the health of a patient and typically includes an estimate of the hemoglobin concentration, which can indicate several conditions, including anemia, polycythemia, and pulmonary fibrosis. Researchers describe a AI-powered imaging-based tool to estimate hemoglobin levels. The setup was developed in conjunction with a microfluidic chip and an AI-powered automated microscope that was designed for deriving the total as well as differential counts of blood cells. High energy radiotherapy could 'paint' tumors to avoid harming healthy tissue ScienceDaily: Latest Science News urn:uuid:f1f11e7a-d075-e781-750f-c2a1d08e3b7c Tue, 23 Feb 2021 10:07:08 -0600 A radiotherapy technique which 'paints' tumors by targeting them precisely, and avoiding healthy tissue, has been devised. 'Missing ice problem' finally solved ScienceDaily: Latest Science News urn:uuid:bfcd1cd1-b4ce-4c5e-7d3f-ee65c70d7053 Tue, 23 Feb 2021 10:07:05 -0600 During glacial periods, the sea level falls, because vast quantities of water are stored in the massive inland glaciers. To date, however, computer models have been unable to reconcile sea-level height with the thickness of the glaciers. For selenium in rivers, timing matters ScienceDaily: Latest Science News urn:uuid:97996351-ba53-0a7c-2002-598be466d4a0 Tue, 23 Feb 2021 10:07:00 -0600 Researchers have gained new insight into an ongoing environmental health problem. Mouse study shows bacteriophage therapy could fight drug-resistant Klebsiella pneumoniae ScienceDaily: Latest Science News urn:uuid:3ad8685f-dbda-8f14-0d16-d0db6c5580a9 Tue, 23 Feb 2021 10:06:56 -0600 Using viruses instead of antibiotics to tame troublesome drug-resistant bacteria is a promising strategy, known as bacteriophage or 'phage therapy.' Scientists have used two different bacteriophage viruses individually and then together to successfully treat research mice infected with multidrug-resistant Klebsiella pneumoniae sequence type 258 (ST258). Terahertz imaging of graphene paves the way to industrialization ScienceDaily: Latest Science News urn:uuid:1e9e570b-4f38-e2f1-834c-d8e6bd1eb3dd Tue, 23 Feb 2021 10:05:03 -0600 X-ray scans revolutionised medical treatments by allowing us to see inside humans without surgery. Similarly, terahertz spectroscopy penetrates graphene films allowing scientists to make detailed maps of their electrical quality, without damaging or contaminating the material. The Graphene Flagship brought together researchers from academia and industry to develop and mature this analytical technique, and now a novel measurement tool for graphene characterisation is ready. Whale Sharks show remarkable capacity to recover from injuries, including partial fin re-growing ScienceDaily: Latest Science News urn:uuid:44f6ebfd-07a0-b11d-b609-6f3f3677afc0 Tue, 23 Feb 2021 10:05:00 -0600 A new study has for the first time explored the extraordinary rate at which the world's largest fish, the endangered whale shark, can recover from its injuries. The findings reveal that lacerations and abrasions, increasingly caused through collisions with boats, can heal in a matter of weeks and researchers found evidence of partially removed dorsal fins re-growing. Whale sharks show remarkable capacity to recover from injuries, including partial fin re-growing ScienceDaily: Latest Science News urn:uuid:fdbc59d9-5eac-e5d7-eda4-e474c583a4cb Tue, 23 Feb 2021 10:05:00 -0600 A new study explores the extraordinary rate at which the world's largest fish, the endangered whale shark, can recover from its injuries. The findings reveal that lacerations and abrasions, increasingly caused through collisions with boats, can heal in a matter of weeks and researchers found evidence of partially removed dorsal fins re-growing. New features of a gene defect that affects muzzle length and caudal vertebrae in dogs ScienceDaily: Latest Science News urn:uuid:7ed04469-c702-431a-e055-929070fbe47d Tue, 23 Feb 2021 10:04:57 -0600 A recent genetic study provides new information on the occurrence of a DVL2 gene defect associated with a screw tail and its relevance to canine constitution and health. The variant was found in several Bulldog and Pit Bull type breeds, and it was shown to result in caudal vertebral anomalies and shortening of the muzzle. The DLV2 variant may also affect the development of the heart. Turbocharging the killing power of immune cells against cancer ScienceDaily: Latest Science News urn:uuid:30075302-9025-e57d-1470-fe1d2e462c48 Tue, 23 Feb 2021 10:04:55 -0600 Creating 'super soldiers' of specific white blood cells to boost an anti-tumor response has been shown in a series of elegant experiments. Glaciers accelerate in the Getz region of West Antarctica ScienceDaily: Latest Science News urn:uuid:7690b00e-c1b2-cd54-cb84-2f7045a24fd7 Tue, 23 Feb 2021 10:04:49 -0600 Glaciers in West Antarctica are moving more quickly from land into the ocean, contributing to rising global sea levels. A 25-year record of satellite observations has been used to show widespread increases in ice speed across the Getz sector for the first time, with some ice accelerating into the ocean by nearly 50%. New sensor paves way to low-cost sensitive methane measurements ScienceDaily: Latest Science News urn:uuid:45ab1127-a1da-205f-c978-4f9847bc1d20 Tue, 23 Feb 2021 10:04:41 -0600 Researchers have developed a new sensor that could allow practical and low-cost detection of low concentrations of methane gas. Measuring methane emissions and leaks is important to a variety of industries because the gas contributes to global warming and air pollution. Hormone helps prevent muscle loss in mice on high fat diets ScienceDaily: Latest Science News urn:uuid:4eeb6f7d-1840-7118-d914-9151c8d3dcb1 Tue, 23 Feb 2021 10:04:38 -0600 A new study suggests that a hormone known to prevent weight gain and normalize metabolism can also help maintain healthy muscles in mice. The findings present new possibilities for treating muscle-wasting conditions associated with age, obesity or cancer, according to scientists. 'Walking' molecule superstructures could help create neurons for regenerative medicine ScienceDaily: Latest Science News urn:uuid:0a5c07eb-df3d-27b1-e61c-dd4654bae473 Tue, 23 Feb 2021 10:04:35 -0600 By discovering a new printable biomaterial that can mimic properties of brain tissue, researchers are now closer to developing a platform capable of conditions using regenerative medicine. Don't focus on genetic diversity to save our species ScienceDaily: Latest Science News urn:uuid:67d390fc-bd43-e1c3-2dc7-528b9b1f3bcc Tue, 23 Feb 2021 10:04:33 -0600 Scientists have challenged the common assumption that genetic diversity of a species is a key indicator of extinction risk. The scientists demonstrate that there is no simple relationship between genetic diversity and species survival. But researchers conclude the focus shouldn't be on genetic diversity anyway; it should be on habitat protection. Basic cell health systems wear down in Huntington's disease, novel analysis shows ScienceDaily: Latest Science News urn:uuid:1abd9637-1a32-61b6-ec76-9b850a34087d Tue, 23 Feb 2021 10:04:28 -0600 A new computational approach for analyzing complex datasets shows that as disease progresses, neurons and astrocytes lose the ability to maintain homeostasis. The 'Geomic' approach can be applied to other diseases, authors say. Scientists use DNA origami to monitor CRISPR gene targeting ScienceDaily: Latest Science News urn:uuid:8f887712-4a5c-faf1-9597-9f4cdd9245c7 Tue, 23 Feb 2021 10:04:20 -0600 The remarkable genetic scissors called CRISPR/Cas9, the discovery that won the 2020 Nobel Prize in Chemistry, sometimes cut in places that they are not designed to target. ALS neuron damage reversed with new compound ScienceDaily: Latest Science News urn:uuid:07383efd-8c1d-d43f-7512-af04c088d4e2 Tue, 23 Feb 2021 10:04:14 -0600 Scientists have identified the first compound that eliminates the ongoing degeneration of upper motor neurons that become diseased and are a key contributor to ALS (amyotrophic lateral sclerosis), a swift and fatal neurodegenerative disease that paralyzes its victims. In ALS, movement-initiating nerve cells in the brain and muscle-controlling nerve cells in the spinal cord die. After administering the new compound,, the diseased brain neurons stopped degenerating so much that they became similar to healthy control neurons after 60 days of treatment. Climate impacts drive east-west divide in forest seed production ScienceDaily: Latest Science News urn:uuid:dbf2e416-c8fc-4fa6-60da-e7f8d0290ab2 Tue, 23 Feb 2021 10:04:11 -0600 Younger, smaller trees that comprise much of North America's eastern forests have increased their seed production under climate change. But older, larger trees that dominate western forests have been less responsive, a new study warns. This continental divide could limit western forests' ability to regenerate following large-scale diebacks linked to rising temperatures and intensifying droughts. Over time this might dramatically alter the composition and structure of 21st century North American forests. Beta blockers can repair malformed blood vessels in the brain ScienceDaily: Latest Science News urn:uuid:bdf4f5e7-b446-7c6a-be32-3f2a3833136f Tue, 23 Feb 2021 10:04:04 -0600 Propranolol, a drug that is efficacious against infantile haemangiomas ('strawberry naevi', resembling birthmarks), can also be used to treat cerebral cavernous malformations, a condition characterized by misshapen blood vessels in the brain and elsewhere.