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Late-Stage Pandemic Is Messing With Your Brain
I first became aware that I was losing my mind in late December. It was a Friday night, the start of my 40-somethingth pandemic weekend: Hours and hours with no work to distract me, and outside temperatures prohibitive of anything other than staying in. I couldn't for the life of me figure out how to fill the time. "What did I used to … do on weekends?" I asked my boyfriend, like a soap-opera amn
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Scientists Believe They Found a Chunk of an Ancient Planet in Africa
Ancient Planet According to a new analysis, ScienceAlert reports , a meteorite found last year in Algeria is actually older than the Earth itself. Instead, an international team of scientists behind the research say, it appears to be a remnant of an ancient protoplanet — making the space rock an extraordinary curiosity that could offer unprecedented insights into the early years of our solar syst
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Artist Uses 5G Robot to Tattoo Somebody In A Different Location
Distance Tattoo As part of a marketing stunt for telecom T-Mobile Netherlands, Dutch TV personality Stijn Fransen got a tattoo by a tattoo artist — but remotely, through the use of a 5G-enabled robot. Tattoo artist Wes Thomas tattooed Fransen remotely through the use of a cleverly engineered robotic arm that used machine learning to learn the placement of Fransen's arm and map the placement onto
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World's first dinosaur preserved sitting on nest of eggs with fossilized babies
The fossil in question is that of an oviraptorosaur, a group of bird-like theropod dinosaurs that thrived during the Cretaceous Period, the third and final time period of the Mesozoic Era (commonly known as the 'Age of Dinosaurs') that extended from 145 to 66 million years ago. The new specimen was recovered from uppermost Cretaceous-aged rocks, some 70 million years old, in Ganzhou City in southe
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Xanadu announces programmable photonic quantum chip able to execute multiple algorithms
A team of researchers and engineers at Canadian company Xanadu Quantum Technologies Inc., working with the National Institute of Standards and Technology in the U.S., has developed a programmable, scalable photonic quantum chip that can execute multiple algorithms. In their paper published in the journal Nature, the group describes how they made their chip, its characteristics and how it can be us
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Earth's deep mantle may have proton rivers made of superionic phases
Pierfranco Demontis said in 1988, "Ice becomes a fast-ion conductor at high pressure and high temperatures," but his prediction was only hypothetical until recently. After 30 years of study, superionic water ice was verified experimentally in 2018. Superionicity may eventually explain the strong magnetic field in giant planetary interiors.
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Large supernova remnant detected by eROSITA
Using the extended Röntgen Survey Imaging Telescope Array (eROSITA) instrument onboard the Spektr-RG spacecraft, astronomers have detected in X-rays a new large supernova remnant (SNR). The newfound object, dubbed "Hoinga," turns out to be one of the largest SNR discovered at wavelengths other than radio. The finding is reported in a paper published February 26 on the arXiv pre-print server.
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A better way to measure acceleration
You're going at the speed limit down a two-lane road when a car barrels out of a driveway on your right. You slam on the brakes, and within a fraction of a second of the impact an airbag inflates, saving you from serious injury or even death.
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Research offers insights on how night shift work increases cancer risk
A recently published study offers new clues as to why night shift workers are at increased risk of developing certain types of cancer compared to those who work regular daytime hours. Findings suggest that night shifts disrupt natural 24-hour rhythms in the activity of certain cancer-related genes, making night shift workers more vulnerable to DNA damage while also causing the body's DNA repair me
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Microscopic wormholes possible in theory
Wormholes play a key role in many science fiction films—often as a shortcut between two distant points in space. In physics, however, these tunnels in spacetime have remained purely hypothetical. An international team led by Dr. Jose Luis Blázquez-Salcedo of the University of Oldenburg has now presented a new theoretical model in the science journal Physical Review Letters that makes microscopic w
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11 percent of food waste comes from our homes
Nearly 17 percent of food that reaches stores, homes and restaurants ends up trashed. (Ella Olsen Unslpash/) It's no surprise that wasting things is a nightmare for the environment—everything that we eat, wear, and otherwise consume takes up natural resources that in many cases are far from infinite. When it comes to food waste, the environment takes a double whammy—water, packaging, transportati
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Ultra-short-period super-Earth detected by TESS
Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has detected a new super-Earth exoplanet. The newfound alien world, designated TOI-1685b, is about 70% larger than Earth and has an ultra-short orbital period of approximately 0.67 days. The finding is reported in a paper published March 1 on arXiv.org.
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Perseverance's giant 'hand lens' will scour Mars for signs of ancient life
Perseverance's PIXL instrument will look for the textures of life in Martian rocks. (NASA/JPL-Caltech/) Follow all of PopSci's Perseverance-mission coverage here. NASA engineers have shipped an envoy, the Perseverance rover, nearly 300 million miles to read the secrets trapped in the stones of Mars. A seven-foot robotic arm is responsible for completing the journey, bringing a cluster of various
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Higher airborne pollen concentrations correlated with increased SARS-CoV-2 infection rates, as evidenced from 31 countries across the globe [Environmental Sciences]
Pollen exposure weakens the immunity against certain seasonal respiratory viruses by diminishing the antiviral interferon response. Here we investigate whether the same applies to the pandemic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is sensitive to antiviral interferons, if infection waves coincide with high airborne pollen concentrations. Our original…
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Humans are altering Earth's tides, and not just through climate change
Miami, which will be increasingly prone to coastal flooding. (Unsplash/) If you'd been standing in just the right Miami Beach parking garage in 2016, you would have been visited by an octopus , washed in on an especially high tide. In Boston, you might have needed to wade to work in the past year. Across the country, sunny day floods, which occur because of high tide, rather than storms, are beco
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Reevaluating the timing of Neanderthal disappearance in Northwest Europe [Evolution]
Elucidating when Neanderthal populations disappeared from Eurasia is a key question in paleoanthropology, and Belgium is one of the key regions for studying the Middle to Upper Paleolithic transition. Previous radiocarbon dating placed the Spy Neanderthals among the latest surviving Neanderthals in Northwest Europe with reported dates as young as…
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A safe and highly efficacious measles virus-based vaccine expressing SARS-CoV-2 stabilized prefusion spike [Microbiology]
The current pandemic of COVID-19 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) highlights an urgent need to develop a safe, efficacious, and durable vaccine. Using a measles virus (rMeV) vaccine strain as the backbone, we developed a series of recombinant attenuated vaccine candidates expressing various forms of the…
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Paw hygiene no reason to ban assistance dogs from hospitals
According to a UN-agreement, assistance dogs like guide dogs, signal dogs and medical response dogs are welcome in hospitals and other public places. However, in practice, they are regularly refused entry. Hygiene reasons are often given as the main argument for this. Research now shows that the paws of assistance dogs are cleaner than the shoe soles of their users, and thus, paw hygiene is no rea
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Postbiosynthetic modification of a precursor to the nitrogenase iron-molybdenum cofactor [Chemistry]
Nitrogenases utilize Fe–S clusters to reduce N2 to NH3. The large number of Fe sites in their catalytic cofactors has hampered spectroscopic investigations into their electronic structures, mechanisms, and biosyntheses. To facilitate their spectroscopic analysis, we are developing methods for incorporating 57Fe into specific sites of nitrogenase cofactors, and we…
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Behavioral responses across a mosaic of ecosystem states restructure a sea otter-urchin trophic cascade [Ecology]
Consumer and predator foraging behavior can impart profound trait-mediated constraints on community regulation that scale up to influence the structure and stability of ecosystems. Here, we demonstrate how the behavioral response of an apex predator to changes in prey behavior and condition can dramatically alter the role and relative contribution…
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A conserved Ctp1/CtIP C-terminal peptide stimulates Mre11 endonuclease activity [Biochemistry]
The Mre11-Rad50-Nbs1 complex (MRN) is important for repairing DNA double-strand breaks (DSBs) by homologous recombination (HR). The endonuclease activity of MRN is critical for resecting 5′-ended DNA strands at DSB ends, producing 3′-ended single-strand DNA, a prerequisite for HR. This endonuclease activity is stimulated by Ctp1, the Schizosaccharomyces pombe homolog…
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Improved photosynthetic capacity and photosystem I oxidation via heterologous metabolism engineering in cyanobacteria [Plant Biology]
Cyanobacteria must prevent imbalances between absorbed light energy (source) and the metabolic capacity (sink) to utilize it to protect their photosynthetic apparatus against damage. A number of photoprotective mechanisms assist in dissipating excess absorbed energy, including respiratory terminal oxidases and flavodiiron proteins, but inherently reduce photosynthetic efficiency. Recently, it has.
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Legume-microbiome interactions unlock mineral nutrients in regrowing tropical forests [Environmental Sciences]
Legume trees form an abundant and functionally important component of tropical forests worldwide with N2-fixing symbioses linked to enhanced growth and recruitment in early secondary succession. However, it remains unclear how N2-fixers meet the high demands for inorganic nutrients imposed by rapid biomass accumulation on nutrient-poor tropical soils. Here, we…
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Life expectancy in adulthood is falling for those without a BA degree, but as educational gaps have widened, racial gaps have narrowed [Social Sciences]
A 4-y college degree is increasingly the key to good jobs and, ultimately, to good lives in an ever-more meritocratic and unequal society. The bachelor's degree (BA) is increasingly dividing Americans; the one-third with a BA or more live longer and more prosperous lives, while the two-thirds without face rising…
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Northern Hemisphere summers may last nearly half the year by 2100
Without efforts to mitigate climate change, summers spanning nearly six months may become the new normal by 2100 in the Northern Hemisphere, according to a new study. The change would likely have far-reaching impacts on agriculture, human health and the environment, according to the study authors.
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Nu dubbelt så många kvinnor i kvinnobiografiskt lexikon
Med buller och bång lanserades Svenskt kvinnobiografiskt lexikon, SKBL, för exakt tre år sedan. Lagom till internationella kvinnodagen finns det nu dubbelt så många kvinnor porträtterade. När svenskt kvinnobiografiskt lexikon lanserades innehöll databasen 1000 kvinnor, därefter beviljades projektet medel från Riksbankens jubileumsfond, och databasen kunde utökas med lika många kvinnor till. – Det
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Unlocking the Mysteries of Long COVID
Photographs by Jonno Rattman Image above: Nearly a year after she was infected with the coronavirus, Caitlin Barber still uses a wheelchair outside. This article was published online on March 8, 2021. The quest at Mount Sinai began with a mystery. During the first wave of the coronavirus pandemic in New York City, Zijian Chen, an endocrinologist, had been appointed medical director of the hospita
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Meghan and Harry Go to War
After the trial separation, here comes the messy divorce. And a vital question: Who gets custody of the narrative? It has been less than a month since Prince Harry and Meghan Markle finalized their split from the British Royal Family, renouncing their patronages and honorary appointments as well as their income. The fallout between the couple and Buckingham Palace has been painful and public. "Th
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Land could be worth more left to nature than when farmed, study finds
Nature-rich sites such as woods and wetlands more valuable because of the 'ecosystem services' they provide The economic benefits of protecting nature-rich sites such as wetlands and woodlands outweigh the profit that could be made from using the land for resource extraction, according to the largest study yet to look at the value of protecting nature at specific locations. Scientists analysed 24
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We Already Got Rid of the Filibuster Once Before
Last week the House of Representatives passed H.R. 1, a bill that would make voter registration automatic, end partisan gerrymandering, strengthen campaign-finance law, and bolster oversight of lobbyists. It's the most sweeping package of democracy reforms in generations. Yet the mood among most democracy reformers was not giddy excitement but resigned dismay: Although H.R. 1 has passed the House
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Global heating pushes tropical regions towards limits of human livability
Rising heat and humidity threatening to plunge much of the world's population into potentially lethal conditions, study finds The climate crisis is pushing the planet's tropical regions towards the limits of human livability, with rising heat and humidity threatening to plunge much of the world's population into potentially lethal conditions, new research has found. Related: 'It is the question o
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Mind your head: scientists discover incredible self-decapitating sea slug – video
Researchers at Japan's Nara Women's University have discovered a new trait exhibited by the sacoglossan sea slug – it has the ability to decapitate itself, then regrow its body. The process, from shedding all of itself below the neck to regrowing a new body, takes less than a month, in an extreme example of a process known as autotomy Keep your head: the self-decapitating sea slugs that regrow th
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France underestimated impact of nuclear tests in French Polynesia
Groundbreaking new analysis could allow more than 100,000 people to claim compensation France has consistently underestimated the devastating impact of its nuclear tests in French Polynesia in the 1960s and 70s, according to groundbreaking new research that could allow more than 100,000 people to claim compensation. France conducted 193 nuclear tests from 1966 to 1996 at Moruroa and Fangataufa at
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In Cryptic Tweet, Elon Musk Refers to Antimatter-Powered Rockets
Yes Man SpaceX's Starship is powered by methane. Its Falcon 9 runs on highly refined kerosene known as RP-1. But if a new tweet means anything, SpaceX CEO Elon Musk already has his eyes set on a much higher-tech rocket fuel: antimatter. In a reply to a post about antimatter rockets — hypothetical spacecraft that would be powered by antimatter — Musk tweeted just two words : "Ultimately, yes." Not
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Rare meteorite chunk traced by scientists to Gloucestershire driveway
'Dream come true' to locate first carbonaceous chondrite seen in UK, part of fireball that caused sonic boom A lump of a rare meteorite that lit up the night sky over the UK and northern Europe last week has been recovered from a driveway in Gloucestershire. The fragment, weighing nearly 300 grams, and other pieces of the space rock were located after scientists reconstructed the flight path of t
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CDC: People Who Are Fully Vaccinated Can Gather Indoors
The Centers for Disease Control and Prevention announced today that Americans who are fully vaccinated against COVID-19 can gather in small numbers indoors, The New York Times reports. Other precautions, including social distancing and masking, are still in effect in public spaces. "Fully vaccinated" means that at least two weeks have elapsed since a given person has received their second Pfizer
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Guns Are a Threat to the Body Politic
Updated at 1:03 p.m. ET on March 8, 2021. Why regulate guns? The standard answer is that gun laws can prevent needless deaths and physical injury. But this is not a complete accounting. As gun-brandishing protesters and armed invasions of legislatures demonstrate, guns inflict more than physical injuries—they transform the public sphere on which a constitutional democracy depends. America must re
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Anger after Indonesia offers Elon Musk Papuan island for SpaceX launchpad
Biak island residents say SpaceX launchpad would devastate island's ecology and displace people from their homes Papuans whose island has been offered up as a potential launch site for Elon Musk's SpaceX project have told the billionaire Tesla chief his company is not welcome on their land, and its presence would devastate their island's ecosystem and drive people from their homes. Musk was offer
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Deadly pig disease could have led to Covid spillover to humans, analysis suggests
African swine fever led to mass cull of pigs in China and may have increased human-virus contact as people turned to other meat Coronavirus – latest updates See all our coronavirus coverage An outbreak of a deadly pig disease may have set the stage for Covid-19 to take hold in humans, a new analysis has suggested. African swine fever (ASF), which first swept through China in 2018, disrupted pork
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It's unavoidable: we must ban fossil fuels to save our planet. Here's how we do it | Roland Geyer
Twice before, humanity has mitigated severe global environmental threats. In both cases we did this not with 'cap and trade' systems, taxes, or offsets, but with bans Time is running out to meet the goals of the Paris Agreement and avoid catastrophic climate change. The 2018 special report of the Intergovernmental Panel on Climate Change (IPCC) "suggests a remaining budget of about 420 Gigatonnes
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Inaction leaves world playing 'Russian roulette' with pandemics, say experts
New coalition calls on governments to tackle root cause of emerging infections – the destruction of nature Coronavirus – latest updates See all our coronavirus coverage Governments must fill a major gap in post-Covid recovery plans with action on the root cause of pandemics – the destruction of nature – a new coalition of health and environment groups has warned. Crucial investments and actions a
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Winners of the 2020 World Nature Photography Awards
The submissions to this year's World Nature Photography Awards have been judged, and the winning images and photographers have just been announced. Thomas Vijayan was the Grand Prize winner, with his image of an orangutan climbing a tree. The contest organizers have shared with us some of the winning images, shown below, from their 13 categories. Captions were provided by the photographers and ha
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Vitamin D supplements may offer no Covid benefits, data suggests
Two studies fail to find evidence to support claims supplements protect against coronavirus Coronavirus – latest updates See all our coronavirus coverage The idea that vitamin D supplements can reduce susceptibility to, and the severity of, Covid-19 is seductive – it offers a simple, elegant solution to a very complex and lethal problem. But analyses encompassing large European datasets suggest t
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Harvard Scientists Propose Super-Tall Towers to Power Moon Base
Moon Tower Scientists have come up with an ambitious new idea to provide bases on the Moon's surface with solar power, New Scientist reports : massive, kilometer-high towers constructed from lunar concrete and almost entirely covered in solar panels. The team, led by Sephora Ruppert from Harvard University, suggest in a yet-to-be-peer-reviewed paper that the towers could be constructed by mixing
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We Have to Grieve Our Last Good Days
F or me, it's the last time I swam in the ocean. It was a February evening in Florida, and I didn't know that the people I was there with would be the last new friends I'd make, on a work trip I didn't know would be the last I'd take. Everyone else seemed content to sit on the sand and look up nearby restaurants on the internet. But I felt like maybe I'd regret it if I didn't go in. So I changed
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What Is Life? Its Vast Diversity Defies Easy Definition.
People often feel that they can intuitively recognize whether something is alive, but nature is filled with entities that flout easy categorization as life or non-life — and the challenge may intensify as other planets and moons open up to exploration. In this excerpt from his new book, Life's Edge: The Search for What It Means to Be Alive , published today, the science writer Carl Zimmer discuss
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We Now Can See a Virus Mutate Like Never Before
In the beginning, there was one. The first genome for the virus causing a mysterious illness we had not yet named COVID-19 was shared by scientists on January 10, 2020. That single genome alerted the world to the danger of a novel coronavirus. It was the basis of new tests as countries scrambled to find the virus within their own borders. And it became the template for vaccines, the same ones now
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How to Put Out Democracy's Dumpster Fire
Illustrations by Yoshi Sodeoka This article was published online on March 8, 2021. T o read the diary of Gustave de Beaumont, the traveling companion of Alexis de Tocqueville, is to understand just how primitive the American wilderness once seemed to visiting Frenchmen. In a single month, December 1831, Tocqueville and Beaumont were on a steamship that crashed; rode a stagecoach that broke an axl
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New Algorithm Breaks Speed Limit for Solving Linear Equations
Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is sometimes the best way to solve systems of linear equations, one of the bedrock calculations in math. As a result, the proof establishes the first method capable of surpassing what had previously been a ha
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The Pandemic Has Made Women Angry
In July, Clare Wenham—and her daughter, Scarlett, and Scarlett's picture of a unicorn—went viral. Wenham researches global health policy at the London School of Economics, and she was giving an interview to the BBC about Britain's attempts to manage the coronavirus pandemic. But Scarlett had another pressing issue on her mind: Which shelf displayed her unicorn to its best advantage? Wenham soldie
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Medieval women 'put faith in birth girdles' to protect them during childbirth
New findings cement idea that ritual and religion was invoked using talismans to soothe nerves With sky-high levels of maternal mortality, the science of obstetrics virtually nonexistent and the threat of infectious disease always around the corner, pregnant medieval women put their faith in talismans to bring them divine protection during childbirth. From amulets to precious stones, the list of
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Physicists Propose New Idea for "Human-Safe" Wormholes
What if we could traverse distances on an astronomical scale, in a blink of an eye, through the use of a wormhole? It's a topic rife with speculation — but if recently published research is anything to go by, traversing through an interdimensional wormhole may not be quite as far-fetched as it sounds. Two separate groups of researchers have suggested new theories as to how to make wormholes safe
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China and Russia Sign Deal to Build Research Base on Moon
Moon Pact Now it's official. Back in February, the governments of Russia and China agreed, informally, to collaborate on an upcoming Moon base . Now, both countries have gone ahead and signed a memorandum of understanding that formalizes those plans — an intriguing collaboration which, if it goes anywhere, could cut NASA out of both nations' goal for a long term Moon presence. Red Moon The collab
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Butterfly population collapse linked to climate change
New research has found that warmer autumns are driving the extinction of monarch butterflies. Globally, 40 percent of insect populations are in decline; one-third are in danger of extinction. Insects pollinate three-fourths of the world's crop supply, resulting in 1.4 billion jobs. Insects might often seem like a nuisance, yet life on this planet would be impossible without them. Sure, mosquitoes
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SpaceX Just Rolled Its Next Starship Prototype Onto the Pad
Next Up SpaceX has rolled its next massive Starship prototype to the launch pad at its testing facilities in Boca Chica, Texas, NASA Spaceflight reports. The prototype, dubbed SN11, is the fourth full-scale test subject of the company's ambitious spacecraft. The three prototypes that came before it — SN8, SN9, and SN10 — were all run through their paces, with varying degrees of success. Case in p
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NASA May Have Picked a Place to Fly the Mars Helicopter
Drop Off After touching down in the Jezero Crater on February 18, NASA's Perseverance rover is getting ready for its big journey. Over the last couple of weeks, the six-wheeled rover has stretched its arms and its wheels — and now it's hunting for a spot to drop one of its most prized possessions: Ingenuity, a small helicopter capable of flying in the Red Planet's thin atmosphere. "I've continued
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A device-independent protocol for more efficient random number generation
Recent advancements in the development of experimental Bell tests have enabled the implementation of a new type of device-independent random number generator. Remarkably, this new type of random number generators can be realized with malicious quantum devices, without requiring detailed models of the quantum devices used.
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Old dogs need to learn new tricks. Here's why.
The idea that older brains become less flexible to learning is in some ways a myth. (Jordan Whitt//) Since at least the 1500s, the adage "You can't teach an old dog new tricks" has preached the impossibility of schooling older folks. The trope still manages to color stereotypes of aging as more of a downhill slide than a journey toward wisdom. But 16th-century know-it-alls didn't have access to 2
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More than half of snacks marketed as healthy are high in fat, salt or sugar
Action on Salt assessed 119 snacks including lentil curls and chickpea chips, finding some to be saltier than seawater More than half of seemingly healthy snacks analysed by experts are high in fat, salt and/or sugar, prompting calls for more "honest" labelling. Action on Salt assessed 119 snacks, including dried/roasted pulses and processed pulse snacks such as lentil curls, chickpea chips and p
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The myth of bringing your full, authentic self to work | Jodi-Ann Burey
Calls for authenticity at work ask for passionate people with diverse, fresh perspectives who challenge old ways of thinking. But too often workplace culture fails to support the authenticity of professionals of color and other underrepresented groups, leading instead to backlash and fewer opportunities. Writer Jodi-Ann Burey outlines steps toward exposing privilege and achieving true equity on th
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Tesla Reportedly Hooking Up Giant Battery to Texas' Failed Grid
Texas Battery According to drone images taken earlier this month, Tesla might be attempting to plug a massive mega-battery into Texas' failed electric grid, Bloomberg reports . Bloomberg suggests that Tesla's rumored battery, which is being constructed outside of Houston, could provide enough power for about "20,000 homes on a hot summer day." While Tesla hasn't confirmed that it is indeed behind
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Pablo Escobar's hippos might be filling an ancient ecological niche
Some ecologists think these hippos may have happened upon a valuable niche once occupied by semiaquatic hoofed mammals that roamed South America 100,000 years ago. (Jacqueline Oakley/) In 1981, notorious drug lord Pablo Escobar imported four hippos from Africa to his estate near Medellín, Colombia. After his death in 1993, the herd meandered into the nearby Magdalena River. Ecologists estimate th
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Royals Could Choose Ordinary Anonymity
In 2019, a romance blossomed between an eligible European royal and a Black commoner whom traditionalists considered unsuitable for a royal marriage. The lovebirds were not Meghan Markle and Prince Harry, who had already been married for a year. They were Princess Märtha Louise of Norway and her boyfriend, a Californian named Durek Verrett. Like Prince Harry, Princess Märtha Louise is a spare hei
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Antarctic Peninsula warming up due to heat in Tasman Sea
The melting of the Earth's ice cover intensified in the 20th century, with glaciers and sea ice in the Arctic and Antarctic regions melting at alarming speeds. In fact, The Antarctic Peninsula (AP), which is the only landmass of Antarctica extending out past the Antarctic Circle, was found to be one of the most rapidly warming regions on the planet during the second half of the 20th century. This
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Scientists question NHS algorithm as young people called in for jab
Apparent inconsistencies in QCovid risk prediction tool wrongly identifying some patients as high risk Coronavirus – latest updates See all our coronavirus coverage Scientists are questioning the reliability of algorithms used to trawl through patients' health records and flag those who should be asked to shield and prioritised for vaccination. GPs have reported being contacted by young, healthy
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Italy passes 'terrible threshold' of 100,000 coronavirus deaths
One year after being the first western country to lock down, Italy is bracing for a third wave of the pandemic Coronavirus – latest updates See all our coronavirus coverage Italy has recorded 100,000 coronavirus deaths, a year after it became the first western country to impose a total lockdown and as it braces for a third wave of the pandemic. Among those who have died in recent days are Monique
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Achondrite found to date back to just two million years after birth of solar system
A team of researchers affiliated with several institutions in France and one in Japan has found that an achondrite found in Algeria (in the Saharan desert) last year dates back to just 2 million years after the birth of the solar system. In their paper published in Proceedings of the National Academy of Sciences, the group describes their study of the rock and what they learned about it.
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Will Kyrsten Sinema Change Her Mind?
E very other January , the 435 members of the House of Representatives convene in the Capitol and determine, as their first order of business, who will lead them for the next two years. The roll is taken, and one by one, each member says aloud their choice for speaker. In 2015, nearly every Democrat cast their vote for Nancy Pelosi, the longtime party leader. Not Kyrsten Sinema. When it was her t
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SpaceX Plans to Bring Starlink Internet to Cars, Boats, and Planes
Starlink Mobile SpaceX is asking US regulators for permission to build out its Starlink broadband internet service for cars, trucks, shipping boats, and aircraft, The Verge reports . So far, SpaceX has focused its Starlink efforts on providing rural homes with broadband speed internet. Now it wants to go mobile, as detailed in a request filed last Friday with the Federal Communications Commission
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How fast is the universe expanding? Galaxies provide one answer.
Determining how rapidly the universe is expanding is key to understanding our cosmic fate, but with more precise data has come a conundrum: Estimates based on measurements within our local universe don't agree with extrapolations from the era shortly after the Big Bang 13.8 billion years ago.
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Key step reached to­ward long-​sought goal of a silicon-​based laser
When it comes to microelectronics, there is one chemical element like no other: silicon, the workhorse of the transistor technology that drives our information society. The countless electronic devices we use in everyday life are a testament to how today very high volumes of silicon-based components can be produced at very low cost. It seems natural, then, to use silicon also in other areas where
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The US Army's New Goggles Could Let Soldiers See Around Corners
Goggle Up The US Army is hard at work on a new pair of hi-tech goggles that allows infantry to see in the dark and even see around corners, Popular Mechanics reports . The goggles, called the Integrated Visual Augmentation System (IVAS), incorporate a feed from a variety of cameras mounted to the front of the goggles. The goggles can also incorporate feeds from other omnidirectional cameras mount
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SpaceX Reveals Plans For Hugely Expanded Spaceport in Texas
Everything's Bigger SpaceX is making money moves in developing its launch site in South Texas, Ars Technica reports , with plans for its expanded spaceport now public. The plans, as outlined in a public notice , include plans for "the continued development of the SpaceX vertical launch area with the expansion and addition of test, orbital, and landing pads, integration towers, associated infrastr
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Watch a black bear take on a striped skunk in a surprising faceoff
A spraying skunk can hit small targets up to 10 feet away. (LeniG from Pixabay/) This story originally featured on Field & Stream . Skunks are the unlikely badasses of the animal world. Small, waddling, and sort of cute, they would seem vulnerable if it weren't for weapon they keep loaded in their anal glands. As it is, they go where they want, brazenly poking their noses into every hole. Coyotes
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China and Russia unveil joint plan for lunar space station
Russian space agency Roscomos and Chinese counterpart CNSA to develop research facilities on surface of moon or in its orbit Russia and China have unveiled plans for a joint lunar space station, with the Russian space agency Roscomos saying it has signed an agreement with China's National Space Administration (CNSA) to develop a "complex of experimental research facilities created on the surface
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Software Glitch Shuts Down Hubble Space Telescope
Safe Mode NASA's Hubble Space Telescope has encountered a software glitch and had to put itself into a protective "safe mode" over the weekend, Space.com reports . In the early morning hours of Sunday, "the Hubble Space Telescope went into safe mode due to an onboard software error," reads a tweet by the telescope's official Twitter account. "All science systems appear normal and Hubble is safe a
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Evidence found of regional magnetic field anomaly in Southeast Asia 800 years ago
An international team of researchers has found evidence of a regional magnetic field anomaly in Southeast Asia, approximately 800 years ago. In their paper published in Proceedings of the National Academy of Sciences, the group describes their study of slag and other remnants left over from iron smelters who once worked in a part of Cambodia formerly known as Tonle Bak and what they found.
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UK Covid live news: Whitty tells MPs situation could 'turn bad very fast' if lockdown easing rushed
Latest updates: chief medical adviser and chief scientific adviser give evidence to Commons science committee NHS Nightingale hospitals to close from next month Return to schools could alter England's roadmap, PM warns Labour calls for audit of UK's preparedness for next pandemic 'Once-in-a-generation event': a year of lockdown in Europe Coronavirus – latest global updates 2.28pm GMT Nicola Sturg
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At AstraZeneca, we know that until everyone is safe from Covid, no one is safe | Pascal Soriot
The scientific community are rising to the challenge, undertaking an unprecedented global health programme Pascal Soriot is the chief executive officer of AstraZeneca Coronavirus – latest updates See all our coronavirus coverage Covid-19 is a virus that knows no boundaries and has inflicted terrible suffering across the world. Now more than ever, we must remember that no one is safe until everyon
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How much longer will the Hubble Space Telescope last?
On Sunday, NASA announced that the Hubble Space Telescope had gone into safe mode once again , "due to an onboard software error." The telescope's science systems were not affected at all, but all science operations were suspended while crews on the ground worked to fix the problem. The agency didn't release any details as to what exactly the glitch was, what had caused it, or what was being done
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5 ways to spot if someone is trying to mislead you when it comes to science
It's not a new thing for people to try to mislead you when it comes to science. But in the age of COVID-19—when we're being bombarded with even more information than usual, when there's increased uncertainty, and when we may be feeling overwhelmed and fearful—we're perhaps even more susceptible to being deceived.
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Will the EU emerge from the coronavirus crisis stronger or weaker? | Timothy Garton Ash
After its mixed Covid response, the EU must now focus on really delivering what its citizens want Coronavirus – latest updates See all our coronavirus coverage A year ago this week, we learned with astonishment that Italy was going into a national lockdown to fight a strange new virus that had apparently come from somewhere in China. Within a fortnight, Spain, France and Britain had followed. Now
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Here's what the CDC says you can do once you're vaccinated—and what it doesn't
Fully vaccinated Americans can now gather indoors, maskless and without distancing—as long as it's with others who've gotten their shots, according to new guidance from the Centers for Disease Control and Prevention. The advice, which comes as vaccinations continue to gain speed in America, are a positive signal for those who have had a course of shots. But it shows there's a lot we still don't k
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Former NASA Leader Says SpaceX Should Build NASA's Moon Rocket
Former NASA deputy administrator Lori Garver believes that the agency's extremely expensive and overdue Space Launch System (SLS), the rocket meant to return American astronauts to the surface of the Moon, just isn't worth the money and the wait. In a new interview with CBS, Garver argued that "I would not have recommended the government build a $27 billion rocket," referring to the SLS, "when th
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Politics Is the New Religion
Illustration by Paul Spella / Rendering by Patrick White This article was published online on March 10, 2021. T he United States had long been a holdout among Western democracies, uniquely and perhaps even suspiciously devout. From 1937 to 1998, church membership remained relatively constant, hovering at about 70 percent. Then something happened. Over the past two decades, that number has dropped
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Scientists discover slug that can decapitate itself, grow new body
In a recent study, scientists observed two species of sea slug that were able to self-decapitate, survive for weeks without organs, and regenerate entirely new bodies. The study authors proposed that the slugs are able to survive as severed heads because of the unique way they obtain energy from algae. While other animals engage in self-amputation (known as autotomy) to avoid predators, the study
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Can Evolution Explain All Dark Animal Behaviors?
Many actions that would be considered heinous to humans — cannibalism, eating offspring, torture and rape — have been observed in the animal kingdom. Most (but not all) eyebrow-raising behaviors among animals have an evolutionary underpinning.
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Driving innovation with emotional intelligence
The world watched in wonder in February as NASA's robotic rover Perseverance successfully landed on the surface of Mars with the goal of searching for evidence of past life on the red planet. The technology itself was, of course, astounding. But what really captivated the public was the video taken by a couple of miniature cameras from consumer-grade smartphones that were attached to the landing
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Cuomo Tries the Trump Defense
Andrew Cuomo and Donald Trump spent much of 2020 feuding—the former president sent dozens of tweets about the New York governor after the start of the coronavirus pandemic—but their quarrel obscured how much the two men have in common. They're both boys from Queens with a brusque manner of speaking, little patience for critics, and the benefit of famous fathers they've striven to eclipse . In 202
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There will never be a cuttlefish in the cabinet – and that makes me sad | Emma Beddington
Octopuses and their relatives are remarkably clever and controlled. How many of our top politicians can say the same? Back in the gentler days of the internet, before it was just bots and people shouting at tea , I had a blog, and through it, occasional exchanges with a woman I described as my "cephalopod correspondent". She would write, sharing interesting titbits about squid behaviour, cuttlefi
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Drone Spy Video Catches Tesla Semi Truck on Test Track
Semi Sonic Videographer Chris Nguyen flew his drone over the test track behind Tesla's Fremont factory last week and spotted something intriguing: one of the company's experimental Tesla Semi trucks in action. Nguyen uploaded two short videos from the episode: Ad Lads In InsideEV 's analysis , it looks as though Tesla was using the Model Y driving in front of the Semi in order to capture footage.
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As we approach death, our dreams offer comfort and reconciliation
One of the most devastating elements of the coronavirus pandemic has been the inability to personally care for loved ones who have fallen ill. Again and again , grieving relatives have testified to how much more devastating their loved one's death was because they were unable to hold their family member's hand —to provide a familiar and comforting presence in their final days and hours. Some had
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Do photosynthetic complexes use quantum coherence to increase their efficiency?
In a new report now published on Science Advances, Elinor Zerah Harush and Yonatan Dubi in the departments of chemistry and nanoscale science and technology, at the Ben-Gurion University of the Negev, Israel, discussed a direct evaluation of the effects of quantum coherence on the efficiency of three natural photosynthetic complexes. The open quantum systems approach allowed the researchers to sim
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Why slow-pouring coffee makes a tower of liquid in your cup
When a droplet of coffee hits the liquid surface in the cup, a characteristic tower of coffee forms for a very short time, sometimes even with a new droplet on top. In a paper that appeared in Physical Review Fluids today, a team of researchers from Amsterdam, Delft and Paris shed new light on this intricate effect.
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The human footprints of Ojo Guareña
The CENIEH has participated in the study of the prints of bare feet found at the Sala y Galerías de las Huellas site in the Ojo Guareña Karst Complex (Burgos), which are the marks left in a soft floor sediment of an exploration by a small group of people between 4600 and 4200 years ago. Dating carried out in the access galleries to this site has documented intensive human traffic during the Neolit
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Perseverance Martian landing point named after Octavia E Butler
Science-fiction author honoured in Nasa's chosen name for Mars rover's touchdown "Mars is a rock – cold, empty, almost airless, dead. Yet it's heaven in a way," Octavia E Butler wrote in her acclaimed novel Parable of the Sower. Decades later, Nasa has informally named the touchdown site of the Mars rover Perseverance after the late science fiction novelist. Nasa said there was "no better person"
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A little squid and its glowing bacteria yield new clues to symbiotic relationships
The relationship between the Hawaiian bobtail squid and the bioluminescent bacteria living in its light organ has been studied for decades as a model of symbiosis. Now researchers have used a powerful chemical analysis tool to identify a small molecule produced by the bacteria that appears to play an important role in their colonization of the light organ.
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Microscope allows ultrafast nanoscale manipulation while tracking energy dynamics
Since the early 2010s, ultrafast probing of materials at atomic-level resolution has been enabled by terahertz scanning tunneling microscopes (THz-STM). But these devices can't detect the dissipation of energy that happens during events such as when photons are emitted via recombination process of an electron-hole pair in a light emitting diode (LED). However, a new technique allows the tracking o
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Microsoft Retracts Paper Claiming Quantum Computing Breakthrough
A controversial 2018 research paper about the discovery of an elusive subatomic particle has been retracted by the reputable journal Nature , the BBC reports . The team, led by researchers from Microsoft, claimed at the time to have discovered evidence of the " Majorana particle ," named after the famed 1930s Italian physicist Ettore Majorana. The particle, the researchers claimed, could make qua
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The Atlantic Daily: Understanding Long COVID
For an estimated 10 to 30 percent of COVID-19 patients, recovery can take months. Known as COVID long-haulers , these patients suffer from symptoms such as severe fatigue and brain fog long after their initial infection. In the latest issue of our magazine, the writer Meghan O'Rourke surveys what doctors know so far about treating this scary illness —and explains why long COVID "may change our me
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Evidence of superfluidity in a dipolar supersolid
Superfluidity in liquids and gases can manifest as a reduced moment of inertia (the rotational analog of mass) under slow rotations. Non-classical rotational effects can also be considered in the elusive supersolid phases of matter where superfluidity can coexist with a lattice structure. In a new report now published in Science, L. Tanzi and a research team at the National Institute of Optics and
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This Soft Robot Stingray Just Explored the Deepest Point in the Ocean
While all eyes were on the dramatic descent of NASA's Perseverance rover last month, a team sent a robot into another alien world, one closer to home: the deep sea. With its towering undersea mountains, dramatic geological features, and unique creatures—many of which remain mysterious—the deep sea is the last uncharted environment on Earth. The inaccessibility isn't surprising. Sinking any intrep
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Mars Express unlocks the secrets of curious cloud
When spring arrives in southern Mars, a cloud of water ice emerges near the 20-kilometer-tall Arsia Mons volcano, rapidly stretching out for many hundreds of kilometers before fading away in mere hours. A detailed long-term study now reveals the secrets of this elongated cloud, using exciting new observations from the Mars Webcam on ESA's Mars Express.
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Charcot-Marie Tooth disease: A 100% French RNA-based therapeutic innovation
Charcot-Marie Tooth disease is the most common hereditary neurological disease in the world. It affects the peripheral nerves and causes progressive paralysis of the legs and hands. No treatment is currently available to fight this disease, which is due to the overexpression of a specific protein. Scientists from the CNRS, INSERM, the AP-HP and the Paris-Saclay and Paris universities have develope
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Study finds link between empathy and care for the environment
A study conducted by a team of researchers fromNanyang Technological University, Singapore (NTU Singapore) has found that Singaporeans who score high levels of empathy choose to prioritize the environment over the convenience and comfort of both themselves and their families or co-workers.
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Sömn kan påverka hur mycket antikroppar man bildar av vaccin
Man vet ännu inte hur länge antikropparna som bildas av vaccinet mot covid-19 finns kvar i kroppen. Tidigare studier visar att mer sömn innan och efter vaccination mot vanlig influensa kan påverka effekten. Forskare vill nu studera om livsstilsfaktorer som sömn, kost och dygnsrytm kan påverka hur långt skydd man får av coronavaccinen.
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New brain sensor offers answers about Alzheimer's
Scientists at the University of Virginia School of Medicine have developed a tool to monitor communications within the brain in a way never before possible, and it has already offered an explanation for why Alzheimer's drugs have limited effectiveness and why patients get much worse after going off of them.
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Combined technique using diamond probes enables nanoscale imaging of magnetic vortex structures
Obtaining a precise understanding of magnetic structures is one of the main objectives of solid-state physics. Significant research is currently being undertaken in this field, the aim being to develop future data processing applications that use tiny magnetic structures as information carriers. Physicists at Johannes Gutenberg University Mainz (JGU) and the Helmholtz Institute Mainz (HIM) recentl
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Space missions are building up a detailed map of the sun's magnetic field
Solar physicists have been having a field day of late. A variety of missions have been staring at the sun more intently ever before (please don't try it at home). From the Parker Solar Probe to the Solar Orbiter, we are constantly collecting more and more data about our stellar neighbor. But it's not just the big-name missions that can collect useful data—sometimes information from missions as sim
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Early Mars climate was intermittently warm
A new study that characterizes the climate of Mars over the planet's lifetime reveals that in its earliest history it was periodically warmed due to the input of greenhouse gases derived from volcanism and meteorites, yet remained relatively cold in the intervening periods, thus providing opportunities and challenges for any microbial life form that may have been emerging on the Red Planet. The st
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Elsevier journals ask Retraction Watch to review COVID-19 papers
At the risk of breaking the Fourth Wall, here's a story about peer reviews that weren't — and shouldn't have been. Since mid-February, four different Elsevier journals have invited me to review papers about COVID-19. Now, it is true that we will occasionally review — often with our researcher, Alison Abritis — papers on retractions … Continue reading
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How fast is the universe expanding? Galaxies provide one answer
Among the methods astronomers have found to measure the expansion rate of the local universe, the Hubble constant, surface brightness fluctuations is potentially one of the most precise. Scientists have now published the first good SBF estimate of the Hubble constant, pegging it at 73.3 km/s/Mpc: in the ballpark of other measurements of the local expansion, including the gold standard using Type I
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Returning to normal life is going to be a slow and steady process
With US FDA approval in hand, the Johnson & Johnson vaccine is continuing to get into arms. A few other countries, including South Africa, have begun administering it as well. (Pixabay/) Click here to see all of PopSci's COVID-19 coverage. More than 300 million vaccines have been administered across the world so far, with another 8 million being delivered each day. The vaccine rollout is accelera
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Brain activity data may improve stock market forecasts, study shows
US research suggests scans offer better price predictions than the actual choices investors make From never trading during the first 30 minutes, to not returning to a stock for a third time, financial investors have a stack of superstitions for predicting stock price changes. Now neuroscientists may have hit upon a more accurate prediction tool: scans of people's brain activity just before they m
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Oceans were stressed preceding abrupt, prehistoric global warming
Microscopic fossilized shells are helping geologists reconstruct Earth's climate during the Paleocene-Eocene Thermal Maximum (PETM), a period of abrupt global warming and ocean acidification that occurred 56 million years ago. Clues from these ancient shells can help scientists better predict future warming and ocean acidification driven by human-caused carbon dioxide emissions.
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These sea slugs sever their own heads and regenerate brand-new bodies
You've heard of animals that can lose and then regenerate a tail or limb. Scientists have discovered two species of sacoglossan sea slug that can do even better, shedding and then regenerating a whole new body complete with the heart and other internal organs. The researchers also suggest that the slugs may use the photosynthetic ability of chloroplasts they incorporate from the algae in their die
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'Island of Rats' recovers
Along the western edge of Alaska's Aleutian archipelago, a group of islands that were inadvertently populated with rodents came to earn the ignominious label of the "Rat Islands." The non-native invaders were accidentally introduced to these islands, and others throughout the Aleutian chain, through shipwrecks dating back to the 1700s and World War II occupation. The resilient rodents, which are k
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Understanding depression and developing empathy | Letters
Dr Annie Hickox advocates for the powerful combination of medication plus talking therapy. And Laurel Farrington highlights how empathy reduces when we are anxious and stressed As a mental health professional, I was glad to read Jenny Stevens' description of her experience of antidepressant medication and how it helped her during a mental health crisis that was exacerbated by Covid-19 ( I'm not a
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How the growth of ice depends on the fluid dynamics underneath
Researchers of the Toschi group of Eindhoven University of Technology think the water phase change problem with considering the water density anomaly is of great importance relating to common natural phenomena. Their research plan is firstly to understand the physics fundamentals, that is, the coupled problem of the stably and unstably stratified layers with considering the density anomaly.
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Nanoenzymes designed with a unique combination of structure and functions
Researchers at the UAB have designed minimalist biostructures that imitate natural enzymes, capable of carrying out two differentiated and reversibly regulated activities thanks to a unique combination of structural and functional properties. The strategy used opens the door to the creation of "intelligent" nanomaterials with tailor-made combinations of catalytic functions.
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Black, young and poor people in UK most likely to report Covid vaccine hesitancy
Survey finds parents of young children also more hesitant – but overall vaccine sentiment is positive Coronavirus – latest updates See all our coronavirus coverage Black people, younger adults, people living in deprived areas of England and parents of children under five are more likely to be hesitant to receive the coronavirus vaccine, according to Office for National Statistics research. The ON
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Treefrogs have noise-cancelling headphones built into their ears
A new paper suggests that the vibration of a frog's lungs feeds back into the frog's eardrums, reducing their sensitivity to certain frequencies in a process that scientists think is similar to how noise-cancelling headphones work. (Norman Lee/) Imagine that you're a female frog. It's mating time, and you're choosing a male of your species. But you have a problem. How do you pick out your suitors
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Concentric circular bands of polarization found in a ferroelectric polymer
A team of researchers from China, the U.S. and Australia has found an example of the formation of concentric circular bands of polarization in a ferroelectric polymer. In their paper published in the journal Science, the group describes the creation of whirlpools at the nano- and microscale and possible uses for the resulting toroidal textures in their materials. Lane Martin with the University of
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Insights on how night shift work increases cancer risk
A recent study offers new clues as to why night shift workers are at increased risk of developing certain types of cancer compared to those who work regular daytime hours. Findings suggest that night shifts disrupt natural 24-hour rhythms in the activity of certain cancer-related genes, making night shift workers more vulnerable to DNA damage while also causing the body's DNA repair mechanisms to
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Strict environmental laws 'push' firms to pollute elsewhere
Multinational companies headquartered in countries with tougher environmental policies tend to locate their polluting factories in countries with more lax regulations, a new study finds. While countries may hope their regulations will reduce emissions of carbon dioxide and other greenhouse gases, these results show that these policies can lead to 'carbon leakage' to other nations.
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Literature's Original Bad Bitch Is Back
H ow does a bad bitch enter the world? From the first pages of Sister Souljah's 1999 debut novel, The Coldest Winter Ever , the teenage protagonist declares that she's been a style icon since birth. "The same night I got home my pops gave me a diamond ring set in 24-karat gold," Winter Santiaga says. Practical considerations, such as whether her infant fingers could even hold up the rings, matter
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Snow Days May Never Be the Same
Snow days are uniquely beloved by kids in wintry climates. After a night of hoping, children earn a blissful surprise: a morning spent sleeping in and a day of playing outside. As Cindy Burau, a fourth-grade teacher in Lake Tahoe, California, put it: Snow days are "like gifts from the heavens that we all need: a sigh, a moment." The pandemic has threatened this tradition. For students who attend
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'Magic sand' might help us understand the physics of granular matter
Sand is a fascinating material. It can flow and be poured like a liquid, but retains many of the properties of solids, clogging pipes or forming sand dunes. The behavior of collections of small particles like sand is known as granular physics, and is an immensely important field for the handling and transport of the wide range of granular materials out there like grains, rice, powders and the vast
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Scientists: Pedestrians Could Wear Devices to Protect Themselves From Self-Driving Cars
Car Culture The dream of self-driving cars arguably came toppling down in March 2018, when an experimental autonomous vehicle operated by Uber fatally struck a pedestrian in Arizona . Now, New Scientist reports , a team of scientists at Princeton has an idea to protect passersby from similar accidents in the future: they could wear radar-reflecting devices that make them ultra-visible to self-dri
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Sea otters maintain remnants of healthy kelp forest amid sea urchin barrens
Sea otters maintain the balance of kelp forest ecosystems by controlling populations of sea urchins, which are voracious kelp grazers. Since 2014, however, California's kelp forests have declined dramatically, and vast areas of the coast where kelp once thrived are now 'urchin barrens,' the seafloor carpeted with purple sea urchins and little else. This has occurred even in Monterey Bay, which hos
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New mechanism found for generating giant vortices in quantum fluids of light
Anyone who has drained a bathtub or stirred cream into coffee has seen a vortex, a ubiquitous formation that appears when fluid circulates. But unlike water, fluids governed by the strange rules of quantum mechanics have a special restriction: as was first predicted in 1945 by future Nobel winner Lars Onsager, a vortex in a quantum fluid can only twist by whole-number units.
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The new Sonos Roam speaker is built to go anywhere—including the shower
It's IP67 rated for ruggedness, which means it can survive up to a half-hour in three feet of water. (Sonos /) Until now, Sonos users have only had one option for adding a portable speaker to their favorite music-streaming platform. The Move debuted back in 2019 with the high-quality sound and meticulously designed hardware you'd expect from the brand. It was also bulky, heavy, and $400, which pu
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Sea level rise up to four times global average for coastal communities
New research shows that coastal populations are experiencing relative sea-level rise up to four times faster than the global average. The study is the first to analyze global sea-level rise combined with measurements of sinking land. The impacts are far larger than the global numbers reported by the Intergovernmental Panel on Climate Change (IPCC). The high rates of relative sea-level rise are mos
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Chemical signal in plants reduces growth processes in favor of defense
In a new study in PNAS, an international team of researchers including scientists from the Max Planck Institute for Chemical Ecology has shown that Arabidopsis thaliana plants produce beta-cyclocitral when attacked by herbivores and that this volatile signal inhibits the methylerythritol 4-phosphate (MEP) pathway. The MEP pathway is instrumental in plant growth processes, such as the production of
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90% of young women report using a filter or editing their photos before posting
Ninety per cent of women report using a filter or editing their photos before posting to even out their skin tone, reshape their jaw or nose, shave off weight, brighten or bronze their skin or whiten their teeth. Young women in the study also described regularly seeing advertisements or push notifications for cosmetic procedures — particularly for teeth whitening, lip fillers, and surgery to enha
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Direct observation of coherence energy scale of Hund's metal
Strongly correlated systems are materials that exhibit strong interactions between electrons, a property unseen in ordinary conductors or insulators. Typical examples include metal-insulator transitions or unconventional high-temperature superconductivity where the resistance becomes zero at high temperatures.
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An investigation of thin liquid films at interfaces between ice and clay materials
For ice, so-called 'surface melting' was postulated as early as the 19th century by Michael Faraday: Already below the actual melting point, i.e. 0 °C, a thin liquid film forms on the free surface because of the interface between ice and air. Scientists led by Markus Mezger, group leader at the Max Planck Institute for Polymer Research (department of Hans-Jürgen Butt) and professor at the Universi
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Climate change could have direct consequences on malaria transmission in Africa
The slowdown in global warming that was observed at the end of last century was reflected by a decrease in malaria transmission in the Ethiopian highlands, according to a study led by the Barcelona Institute for Global Health (ISGlobal) and the University of Chicago. The results, published in Nature Communications, underscore the close connection between climate and health.
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Cognitive fatigue changes functional connectivity in brain's fatigue network
Dr. Wylie, director of the Ortenzio Center, commented on the results of this task-based functional neuroimaging paradigm: "Our findings provide further evidence for a functionally connected 'fatigue network' in the brain. More importantly, we have shown for the first time that this functional network connectivity changes in association with cognitive fatigue," he emphasized. "This promises to acce
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Interventions can shift the thermal optimum for parasitic disease transmission [Ecology]
Temperature constrains the transmission of many pathogens. Interventions that target temperature-sensitive life stages, such as vector control measures that kill intermediate hosts, could shift the thermal optimum of transmission, thereby altering seasonal disease dynamics and rendering interventions less effective at certain times of the year and with global climate change….
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Luftburet pollen påverkar försvaret mot covid
Pollen påverkar motståndskraften mot det pandemiska viruset SARS-CoV-2. Koncentrationen i luften bidrar till hur många människor som drabbas av Covid-19. Det visar en studie i 31 länder på fem kontinenter. Antalet infekterade (räknat per 100 000 invånare) är signifikant högre vid höga pollenhalter. Det är också ett lägre antal infekterade vid låga pollenhalter, enligt studien. – Effekten handlar
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Growth is killing us: An interview with Jason Hickel
What would happen if we waved goodbye to capitalism and instead focused on nurturing trust? The British economic anthropologist Jason Hickel tells Paulina Wilk that a better world is possible – but we only have 20 years to build it. Paulina Wilk: In the middle of a pandemic caused by a new virus, you have published a book in which you call for a revolution and set humanity a new challenge that wi
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Most distant quasar with powerful radio jets discovered
Astronomers have discovered and studied in detail the most distant source of radio emission known to date. The source is a 'radio-loud' quasar — a bright object with powerful jets emitting at radio wavelengths — that is so far away its light has taken 13 billion years to reach us. The discovery could provide important clues to help astronomers understand the early Universe.
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Scientists discover structural changes in adult mice brains as seen in young animals
Understanding cellular and molecular mechanisms underlying brain 'plasticity' is crucial for explaining many illnesses and conditions. Neurocientists managed to repeatedly image synapses, tiny contact sites between neurons, in awake adult mice. They are the first to discover that adult neurons in the primary visual cortex with an increased number of 'silent synapses' lacking a certain protein, dis
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Därför kan vissa vacciner vara bättre än andra
Vissa av vaccinerna mot covid-19 tar sig in i cellerna med hjälp av ett annat protein och en annan väg än man tidigare hade trott. Detta kan förklara varför vissa av de så kallade vektorbaserade vacciner kan vara bättre än andra, menar forskarna bakom upptäckten. – Man kan säga att detta kan vara en förklaring till varför vissa så kallade adenovirus-baserade vacciner är mer effektiva än andra vac
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Novel hydrogen fuel purification membrane paves the way for greener future
Hydrogen is a clean source of fuel, but its purification has been challenging until now. Now, a group of scientists has found a solution — by characterizing a hybrid separation membrane for purifying hydrogen from other gases. In light of the current global warming crisis, the scientists are optimistic that their novel membrane will make the use of hydrogen fuel efficient and cost-effective.
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Ethnobotanical survey enlightens traditional knowledge, use and conservation of plants in Kenya
An ethnobotanical survey conducted in Tharaka-Nithi County in Kenya has revealed high traditional knowledge of plant resources held by the residents. This is the first study ever done in all the regions of the county, according to researchers from the Sino-Africa Joint Research Center (SAJOREC) of the Chinese Academy of Sciences (CAS).
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One giant step: Moon race hots up
As Russia and China sign a deal for a shared lunar space station, we look at the new race to the Moon with Nokia even working with NASA to give it a 4G network.
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How would rain be different on an alien world?
On Titan, Saturn's largest moon, it rains on a regular basis. As with Earth, these rains are the result of liquid evaporating on the surface, condensing in the skies, and falling back to the surface as precipitation. On Earth, this is known as the hydrological (or water) cycle, which is an indispensable part of our climate. In Titan's case, the same steps are all there, but it is methane that is b
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Cheap, nontoxic carbon nanodots poised to be quantum dots of the future
Tiny fluorescent semiconductor dots, called quantum dots, are useful in a variety of health and electronic technologies but are made of toxic, expensive metals. Nontoxic and economic carbon-based dots are easy to produce, but they emit less light. A new study that uses ultrafast nanometric imaging found good and bad emitters among populations of carbon dots. This observation suggests that by selec
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Tiny diamonds prove an excellent material for accelerator components
When it comes to producing high-quality electron beams like those found in state-of-the-art scientific equipment like free-electron lasers, ultrafast electron diffraction and imaging and wakefield accelerators, scientists have looked to photocathode technology as a way to convert light to electrons. These tools give researchers a way to more deeply penetrate into materials and atomic structure and
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How to colorize your old black and white photos
Have you ever wondered what was your great grandmother's favorite color to wear? Now you can know. (Jon Tyson / Unsplash /) You might be worrying about droids powered by artificial intelligence taking over the planet in the long term. But in the meantime, you can use that same technology for all kinds of helpful tasks. Colorizing old black and white photos is one of them. Several platforms can gi
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Rare mutations may have big impact on schizophrenia pathology
Researchers have long searched for genetic influences in schizophrenia, a neurodevelopmental disorder that disrupts brain activity producing hallucinations, delusions, and other cognitive disturbances. However the disease's genetic mutations have been identified in only a small fraction — fewer than a quarter — of sequenced patients. A new study now shows that 'somatic' gene mutations in brain c
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First infection of human cells during spaceflight
Scientists have described the infection of human cells by the intestinal pathogen Salmonella Typhimurium during spaceflight. They show how the microgravity environment of spaceflight changes the molecular profile of human intestinal cells and how these expression patterns are further changed in response to infection. The researchers were also able to detect molecular changes in the bacterial patho
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Best glasses cleaners: Get spotless specs with our top picks
Even salt water is no match for these cleaners. (Joshua Newton via Unsplash/) Dust, oil, hair, and other types of grime are a normal part of everyday life, but nobody is more constantly reminded of the inconvenience they can cause than people who wear glasses. If you or someone you care about is burdened by the constant cycle of smudging and cleaning that comes with owning a pair of glasses, turn
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Reading Attraction in the Brain
I have been tracking the research in brain-machine interface (BMI), specifically with an eye towards studies that claim to interpret brain data. Typically I find that such studies are overhyped, at least in the press release and subsequent reporting. The question I always ask myself is – what exactly are they measuring and interpreting? A new study , using BMI and a form of AI called Generative a
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Homeroom: My Grandkids Are Struggling. I Don't Know How to Help.
Editor's Note: Every Tuesday, Abby Freireich and Brian Platzer take questions from readers about their kids' education. Have one? Email them at homeroom@theatlantic.com. Dear Abby and Brian, I'm trying to supervise my 9-year-old grandson through online learning. He has ADHD, is extremely smart, and gets bored with the slow pace set by the teacher, who's trying valiantly to engage 28 different stu
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The optimal design of cellular sensing systems
To survive and prosper, living cells continually respond and adapt to changes in their environment. To this end, they have developed sensing systems that rival the best man-made sensing devices. Yet, how accurately these systems can measure chemical concentrations remains poorly understood. Researchers from AMOLF have now developed a theory that predicts the optimal design that maximizes the sensi
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Svenskar straffar normbrytare med skvaller
Det är skillnad på hur människor som bryter mot sociala normer bemöts i olika länder. I Algeriet och Indonesien anses fysisk konfrontation och utstötning vara ett lämpligt straff. I Sverige och Finland tycker man däremot att det är lämpligare att skvallra om normbrytaren. Personer som bryter mot gemensamma sociala normer finns överallt omkring oss. Det kan vara personen som pratar för högt på bib
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A comprehensive guide to coronavirus symptoms
A drippy, congested nose can be part of mild COVID. (Unsplash/) Click here to see all of PopSci's COVID-19 coverage. Anywhere from one-fifth to one half of SARS-CoV-2 carriers are asymptomatic . In the rest, the virus can manifest as an unwitting selection from a buffet of COVID-19 symptoms—coughing, fever, loss of taste , lack of appetite, vomiting, diarrhea, brain fog, fatigue—that's made the c
4h
In India's Bohra Community, a Battle Over Genital Mutilation
A lawsuit in India weighs women's religious right to practice female circumcision in a Muslim minority group against those who condemn the tradition as genital mutilation. But according to hundreds of interviews of victims, sexual control is commonly cited as the primary motivation behind the practice.
4h
As Moore's Law Slows, Chip Specialization Could Undermine Computing Progress
For decades, the computer chips that r u n everything from PCs to spaceships have looked remarkably similar . But as Moore's Law slows, industry leaders are moving towards specialized chips , which experts say threatens to undermine the economic forces fueling our rapid technological growth. The earliest computers were often designed to carry out very specific tasks, and even if they could be rep
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COVID Race Against Time
We know a lot more now about SARS-CoV-2 and COVID-19 than we did a year ago when this pandemic was just getting into full swing. One of the big questions was about the emergence of new variants – how fast does the virus mutate, and what is the probability of variants with new properties emerging? Scientists have been tracking the variants since the beginning. It's actually a good way to track the
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A new dwarf nova: ZTF18abdlzhd is an SU UMa-type star, study finds
Using the Zwicky Transient Facility (ZTF) and the Caucasus Mountain Observatory (CMO), Russian astronomers have investigated a peculiar source designated ZTF18abdlzhd. The observations revealed that this object is an SU UMa-type dwarf nova. The finding is reported in a paper published March 4 on the arXiv pre-print server.
1h
Milk prebiotics are the cat's meow
If you haven't been the parent or caregiver of an infant in recent years, you'd be forgiven for missing the human milk oligosaccharide trend in infant formulas. These complex carbohydrate supplements mimic human breast milk and act like prebiotics, boosting beneficial microbes in babies' guts. Milk oligosaccharides aren't just for humans; all mammals make them. New research suggests milk oligosacc
17h
Injectable porous scaffolds promote better, quicker healing after spinal cord injuries
Researchers have developed materials that can interface with an injured spinal cord and provide a scaffolding to facilitate healing. To do this, scaffolding materials need to mimic the natural spinal cord tissue, so they can be readily populated by native cells in the spinal cord, essentially filling in gaps left by injury. The researchers show how the pores improve efficiency of gene therapies ad
18h
Speeding treatment for urinary tract infections in children
A study defines parameters for the number of white blood cells that must be present in children's urine at different concentrations to suggest a urinary tract infection (UTI). The findings could help speed treatment of this common condition and prevent potentially lifelong complications.
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Researchers develop improved recycling process for carbon fibers
The process retains properties of fibers at a higher rate than previous methods, demonstrating a retention strength of up to 90 percent. Recycling of composite materials could be up to 70 percent cheaper and lead to a 90-95 percent reduction in CO2 emissions compared to standard manufacturing.
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Successor of the COMPASS experiment will measure fundamental properties of the proton and its relatives
Protons are one of the main building blocks of the visible universe. Together with neutrons, they make up the nuclei of every atom. Yet, several questions loom about some of the proton's most fundamental properties, such as its size, internal structure and intrinsic spin. In December 2020, the CERN Research Board approved the first phase ("phase-1") of a new experiment that will help settle some o
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Guaranteed income increases employment, improves financial and physical health
Results released on March 3, 2021 from the first year of the Stockton Economic Empowerment Demonstration (SEED) show guaranteed income drastically improves job prospects, financial stability, and overall wellbeing of recipients. As Congress and the Biden administration debate the inclusion of pandemic stimulus aid, this new research counters long-held narratives that unrestricted cash payments dis
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Best surge protector: For safe charging and tech use
A place to plug in all your tech. (Trinity Nguyen via Unsplash/) Finding the best surge protector for your electronics ensures that they'll remain guarded from potentially irreversible damage that comes from commonly occurring electrical spikes in building wiring and power grids. Power surges are a normal and inconvenient part of life that occur frequently when utility companies switch electricit
22h
The Supreme Court Needs to Show Its Work
Updated at 9:35 a.m. ET on March, 10, 2021. A little after 8 p.m. eastern time on Friday, February 26—a time when people were logging off for the weekend, parents were putting kids to bed, and the last thing on anyone's mind was the Supreme Court—the justices issued their latest in a series of controversial orders blocking local and state restrictions on indoor religious services. Like most of th
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What are we missing out on by not talking to strangers? – podcast
Social distancing measures mean most of us now have very little opportunity to talk to strangers and acquaintances. These chats might seem insignificant, but they can provide lots of psychological benefits. To find out more, Linda Geddes speaks to Gillian Sandstrom about what we're currently missing out on. And, when told Gillian finds finishing a chat particularly hard, Linda gets in touch with
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Making the role of AI in medicine explainable
Researchers have developed a new tissue-section analysis system for diagnosing breast cancer based on artificial intelligence (AI). For the first time, morphological, molecular and histological data are integrated in a single analysis. Furthermore, the system provides a clarification of the AI decision process in the form of heatmaps.
21h
New inhibitor found to combat drug-resistant cancer cells
A new substance could improve the treatment of persistent cancers. Researchers have developed a new inhibitor that makes drug-resistant tumor cells respond again to chemotherapy. The new substance blocks a protein in the cancer cells that normally transports the cancer drugs back out of the cells.
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Breaking waves and moisture transport drive extreme precipitation events
Around the world each year, extreme precipitation events cause catastrophic flooding that results in tragic loss of life and costly damage to infrastructure and property. However, a variety of different weather systems can cause these extreme events, so a detailed understanding of the atmospheric processes that lead to their formation is crucial.
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Brittiska mutationen kan vara dödligare
Flera studier pågår nu om hur snabbt varianterna av det ursprungliga viruset sprider sig och hur farliga de är. Enligt en ny klinisk studie har den brittiska varianten gett en ökad dödlighet på 30 till 100 procent jämfört med det tidigare dominerande viruset. Man vet ännu inte varför man blir sjukare av den brittiska varianten.
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New tool makes students better at detecting fake imagery and videos
Researchers have developed a digital self-test that trains users to assess news items, images and videos presented on social media. The self-test has also been evaluated in a scientific study, which confirmed the researchers' hypothesis that the tool genuinely improved the students' ability to apply critical thinking to digital sources.
19h
Turing structures in a manmade interface
In 1952, Alan Turing, the father of computer science and artificial intelligence, proposed that certain repetitive natural patterns may be produced by the interaction of two specific substances through the reaction-diffusion process. In this system, an activator promotes the reaction and an inhibitor inhibits the reaction. When the two meet, the reaction diffuses. When the difference in diffusion
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Immune cell implicated in development of lung disease following viral infection
Scientists have implicated a type of immune cell in the development of chronic lung disease that sometimes is triggered following a respiratory viral infection. The evidence suggests that activation of this immune cell serves as an early switch that, when activated, drives progressive lung diseases, including asthma and chronic obstructive pulmonary disease (COPD).
17h
Bird parents that receive help live longer
Long life is common among bird parents that get help with childcare. This finding comes from researchers at the universities of Lund and Oxford who reviewed data from more than 9,000 studies.
21h
The aurora's very high altitude booster
Electrons arriving from the Sun are propelled by electrical energy generated as high as 30,000 kilometers above Earth, ultimately creating the dazzling displays of the northern and southern lights.
23h
New method could democratize deep learning-enhanced microscopy
Deep learning is a potential tool for scientists to glean more detail from low-resolution images in microscopy, but it's often difficult to gather enough baseline data to train computers in the process. Now, a new method developed could make the technology more accessible — by taking high-resolution images, and artificially degrading them.
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Study finds brain's 'wiring insulation' as major factor of age-related brain deterioration
A new study led by the University of Portsmouth has identified that one of the major factors of age-related brain deterioration is the loss of a substance called myelin. Myelin acts like the protective and insulating plastic casing around the electrical wires of the brain – called axons. Myelin is essential for superfast communication between nerve cells that lie behind the supercomputer power of
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5 sleuthing skills that'll reveal the age of any web page
Those are the hands of someone who's complaining about an undated web page. (Headway/Unsplash/) Usually, the date an article or web page was published is on the screen in front of you. But sometimes a page will try to masquerade as an ageless wonder, which is problematic when you need to know if it's still relevant. Don't fret: There are ways to lift the veil of mystery. To be clear, unearthing a
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Spatial tuning of electrophysiological responses to multisensory stimuli reveals a primitive coding of the body boundaries in newborns [Psychological and Cognitive Sciences]
The ability to identify our own body and its boundaries is crucial for survival. Ideally, the sooner we learn to discriminate external stimuli occurring close to our body from those occurring far from it, the better (and safer) we may interact with the sensory environment. However, when this mechanism emerges…
20h
Covid-19 risk increases with airborne pollen
When airborne pollen levels are higher, increased SARS-CoV-2 infection rates can be observed. These results were determined by a large-scale study conducted by an international team headed by researchers at the Technical University of Munich (TUM) and the Helmholtz Zentrum München. On Tuesday, March 9, at 3 pm CET, the team will present the findings, published in the prestigious journal PNAS, at a
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An astronaut's guide to out-of-Earth manufacturing
mprovising new stuff from the stuff you have is part of an astronaut's job description—think Apollo 13's crew refitting CO2 filters to save their own lives, or stranded Mark Watney in The Martian, feeding himself on the Red Planet. Now plans are underway to manufacture items in orbit, and ESA astronaut Alexander Gerst argues this could make a big difference to living and working in space.
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New study sheds light on Caribbean mammal extinctions, helps guide conservation strategies
A new study by a team of international scientists jointly led by Stony Brook University Professor Liliana M. Dávalos, Ph.D., and Professor Samuel Turvey of the Zoological Society of London, reveals that the largest and smallest mammals in the Caribbean have been the most vulnerable to extinction. The findings, published in the Proceedings of the Royal Society B, help predict future extinction risk
2h
Milk prebiotics are the cat's meow, research shows
If you haven't been the parent or caregiver of an infant in recent years, you'd be forgiven for missing the human milk oligosaccharide trend in infant formulas. These complex carbohydrate supplements mimic human breast milk and act like prebiotics, boosting beneficial microbes in babies' guts.
18h
Researchers make carbon nanotube patterns called moirés for materials research
Material behaviors depend on factors including the composition of the material and the arrangement of its molecular parts. For the first time, researchers have found a way to coax carbon nanotubes into creating moiré patterns. Such structures could be useful in materials research, particularly in the field of superconducting materials.
2h
Microwave-assisted recording technology promises high-density hard disk performance
Researchers have studied the operation of a small device fabricated in the write gap of a hard disk drive's write head to extend its recording density. The device is based on microwave-assisted magnetic recording. This technology uses a spin-torque oscillator, which causes the magnetic particles of the recording medium to wobble. This makes them much easier to flip over when the write head applies
18h
Ice skating and permafrost
From ice skating, it has been known for a long time that a thin liquid film forms on ice surfaces. This, along with other causes, is responsible for ice slipperiness. Scientists have now investigated a related effect at interfaces between ice and porous clay minerals. Such interfaces are found in nature for example in permafrost. The results may help to better understand changes in frozen soils as
22h
Assessing regulatory fairness through machine learning
Applying machine learning to a U.S. Environmental Protection Agency initiative, researchers reveal how key design elements determine what communities bear the burden of pollution. The approach could help ensure fairness and accountability in machine learning used by government regulators.
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Innovative flat optics will usher the next technological revolution
In a new paper published in Light: Science & Applications, a group led by Professor Andrea Fratalocchi from Primalight Laboratory of the Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Saudi Arabia, introduced a new patented, scalable flat-optics technology manufactured with inexpensive semiconductors.
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Nicaragua volcano blankets communities in ash
The San Cristobal volcano, the highest in Nicaragua and one of its most active, spewed a cloud of ash Tuesday that blanketed the city of Chinandega and surrounding communities, a local journalist told AFP.
6h
An epic walk: 15 million years needed for dinosaurs to get from South America to Greenland
For the first time, two researchers have accurately dated the arrival of the first herbivorous dinosaurs in East Greenland. Their results demonstrate that it took the dinosaurs 15 million years to migrate from the southern hemisphere, as a consequence of being slowed down by extreme climatic conditions. Their long walk was only possible because as CO2 levels dropped suddenly, the Earth's climate b
21h
Recyclable bioplastic membrane to clear oil spills from water
Polymer scientists from the University of Groningen and NHL Stenden University of Applied Sciences, both in the Netherlands, have developed a polymer membrane from biobased malic acid. It is a superamphiphilic vitrimer epoxy resin membrane that can be used to separate water and oil. This membrane is fully recyclable. When the pores are blocked by foulants, it can be depolymerized, cleaned and subs
18h
X marks the spot: How genes on the sex chromosomes are controlled
Because human females have two X chromosomes and males have one X and one Y, somatic cells have special mechanisms that keep expression levels of genes on the X chromosome the same between both sexes. This process is called dosage compensation and has been extensively studied in the fruit fly Drosophila. Now, researchers at the University of Tsukuba (UT) continued work with Drosophila to show that
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Study reveals 'hidden costs' of being Black in the US
A woman grips her purse tightly as you approach. A store manager follows you because you look "suspicious." You enter a high-end restaurant, and the staff assume you're applying for a job. You're called on in work meetings only when they're talking about diversity.
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Irrigation management key for bioenergy production to mitigate climate change
To avoid a substantial increase in water scarcity, biomass plantations for energy production need sustainable water management, a new study shows. Bioenergy is frequently considered one of the options to reduce greenhouse gases for achieving the Paris climate goals, especially if combined with capturing the CO2 from biomass power plants and storing it underground. Yet growing large-scale bioenergy
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How scientists found rare fireball meteorite pieces on a driveway—and what they can teach us
As people in the UK were settling down to watch the late evening news on February 28, a fresh news story, quite literally, appeared in the night sky. A large and very bright fireball was seen over southern England and northern France at 21:54 GMT. It was recorded by many doorbell webcams, so it was a very well-observed fireball. More importantly, it was also captured by the automated cameras of th
1h
The most recent volcanic activity on the moon? Just 100 million years ago
Regions of the moon known as irregular mare patches—formed by magma cooling from a volcanic eruption—have almost no big craters, indicating that they must be relatively young. By studying the distribution of craters within them, we can estimate when these regions were formed: no more than 100 million years ago.
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How to prep your gear for the first camping trip of the season
You want to miss out on this because you didn't check your gear before leaving? (Dominik Jirovský / Unsplash/) It's happened to many outdoor enthusiasts. As soon as spring peeks its sunny face, you pack up and head to the nearest campsite, only to find you've made a big mistake. The gear you put away only three months ago is exactly the way you left it—or worse. Your fuel canisters are empty, you
2h
Characterizing different cell types in the upper gastrointestinal tract
Researchers identified and characterized rare cell types in the esophagus, stomach and upper part of the small intestine, using single cell RNA sequencing. They provide detailed gene expression analyses for all epithelial cells in these organs. Furthermore, they identified a rare cell type that is most likely responsible for the secretion of high volumes of water in humans, providing a link to gas
19h
Microchips of the future: Suitable insulators are still missing
2D semiconductors (such as graphene) could revolutionize electronics: They can be used to produce extremely small transistors. However, in order to make a transistor, insulators are required too. So extremely thin insulating materials are needed as well. New results show: The materials used until now are not the way to go.
21h
Barnet blir symbol i högerpopulisters retorik
Det "värnlösa barnet" har blivit en symbol för att driva fram konservativa politiska förändringar. Nu ska den högerpopulistiska retoriken i Ryssland och Tyskland studeras av forskare vid Malmö universitet. Ett argument för att införa en mer konservativ politik om sexualitet och kön är viljan att skydda det värnlösa barnet. En nytt forskningsprojekt, finansierat av EU-kommisionen, vill undersöka h
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Fågelföräldrar med "hjälpare" lever längre
I djurens värld får de biologiska föräldrar som kan lämna ifrån sig ansvaret för sina ungar till andra vuxna individer i gruppen, så kallade "hjälpare", fler avkommor och ett längre liv. Detta förutsatt att "hjälparen" varken är lat eller glömsk. Ett generellt mönster är att djur som lever länge får färre avkommor jämfört med djur som lever kortare tid. Med andra ord; föräldrapar som får många un
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Searching for elusive supersymmetric particles
The Standard Model of particle physics is the best explanation to date for how the universe works at the subnuclear level and has helped explain, correctly, the elementary particles and forces between them. But the model is incomplete, requiring "extensions" to address its shortfalls.
1h
Head injury 25 years later: Study finds increased risk of dementia
New research shows that a single head injury could lead to dementia later in life. This risk further increases as the number of head injuries sustained by an individual increases. The findings also suggest stronger associations of head injury with risk of dementia among women compared to among men and among white as compared to among Black populations.
18h
Two species and a single name: 'Double identity' revealed in a venomous banana spider
Spiders from the genus Phoneutria—also known as banana spiders—are considered aggressive and among the most venomous spiders in the world, with venom that has a neurotoxic action. These large nocturnal spiders usually inhabit environments disturbed by humans and are often found in banana plantations in the Neotropical region.
21h
Lights on for silicon photonics
The demonstration of electroluminescence at terahertz frequencies from a silicon-germanium device marks a key step towards the long-sought goal of a silicon-based laser.
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Synthetic heparan sulfate standards and machine learning facilitate the development of solid-state nanopore analysis [Chemistry]
The application of solid-state (SS) nanopore devices to single-molecule nucleic acid sequencing has been challenging. Thus, the early successes in applying SS nanopore devices to the more difficult class of biopolymer, glycosaminoglycans (GAGs), have been surprising, motivating us to examine the potential use of an SS nanopore to analyze synthetic…
19h
Pungent-variable of sweet chili pepper Shishito: genes and seeds
Chili peppers are an important spice and vegetable that supports food culture around the world. The content of capsicumoids varies depending on the variety and is known to fluctuate greatly depending on the cultivation environment. Researchers set out to determine the number of seeds inside the shishito pepper and the intensity of pungency of the fruit, and the gene expression control mechanism th
23h
Massive 'space hurricane' made of plasma rained electrons over North Pole
An international team of scientists has confirmed the occurrence of a "space hurricane" seven years ago. The storm formed in the magnetosphere above the North Magnetic Pole. The storm posed no risk to life on Earth, though it might have interfered with some electronics. Seven years ago, a 600-mile wide space hurricane made of plasma raged for eight hours high over the North Magnetic Pole. Only no
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The Atlantic Daily: We're Forgetting What Normal Was
Everything was normal, until it wasn't. Last March, we scrambled home, used coffee mugs left on our desks, our worlds shrinking without time for a proper goodbye. In the days, weeks, and months that followed, our "new normal" became just that. Now, a year later, our brains are both grieving and forgetting the lives we once lived. We are still grieving our Last Good Days. "For me, it's the last ti
59min
4 ways to keep newsletters from destroying your inbox
Filter out that spam mail and keep what counts—like PopSci's DIY newsletter. (Subscribe in the top right corner of your screen!) (Vojtech Bruzek / Unsplash/) It seems like everyone has a newsletter now (you may have even signed up for ours ), and these inbox digests can be useful resources for making discoveries, educating yourself, and keeping up with the news you're most interested in. If you'v
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Explaining Parker Solar Probe's magnetic puzzle
When NASA's Parker Solar Probe sent back the first observations from its voyage to the Sun, scientists found signs of a wild ocean of currents and waves quite unlike the near-Earth space much closer to our planet. This ocean was spiked with what became known as switchbacks: rapid flips in the Sun's magnetic field that reversed direction like a zig-zagging mountain road.
26min
Carbon nanotube patterns called moirés created for materials research
Material behaviors depend on many things including not just the composition of the material but also the arrangement of its molecular parts. For the first time, researchers have found a way to coax carbon nanotubes into creating moiré patterns. Such structures could be useful in materials research, in particular in the field of superconducting materials.
49min
Huge potential for electronic textiles made with new cellulose thread
Electronic textiles offer revolutionary new opportunities in various fields, in particular healthcare. But to be sustainable, they need to be made of renewable materials. A research team now presents a thread made of conductive cellulose, which offers fascinating and practical possibilities for electronic textiles.
49min
Porous, ultralow-temperature supercapacitors could power Mars, polar missions
NASA's Perseverance Rover recently made a successful landing on Mars, embarking on a two-year mission to seek signs of ancient life and collect samples. Because Mars is extremely cold—nighttime temperatures can drop below -112 F—heaters are required to keep the rover's battery system from freezing. Now, researchers reporting in ACS' Nano Letters have 3D printed porous carbon aerogels for electrode
2h
Researchers modify air quality models to reflect polluted reality in Latin America
Computational models of air quality have long been used to shed light on pollution control efforts in the United States and Europe, but the tools have not found widespread adoption in Latin America. New work from North Carolina State University and Universidad de La Salle demonstrates how these models can be adapted to offer practical insights into air quality challenges in the Americas outside th
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The mosquito protein AEG12 displays both cytolytic and antiviral properties via a common lipid transfer mechanism [Biophysics and Computational Biology]
The mosquito protein AEG12 is up-regulated in response to blood meals and flavivirus infection though its function remained elusive. Here, we determine the three-dimensional structure of AEG12 and describe the binding specificity of acyl-chain ligands within its large central hydrophobic cavity. We show that AEG12 displays hemolytic and cytolytic activity…
19h
Researchers derive naturally occurring melanin at a massive scale from mushrooms
The pigment melanin protects human skin from harmful UV light (and gives us a summer tan), and is a veritable treasure trove for new materials and technologies. Although melanin occurs naturally, the complex biopolymer can only be produced artificially at an industrial scale through expensive and complex processes, during which some of the compound's properties are lost. To date, processes for ext
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Digital books harm young children's learning–unless the books have the right enhancements
A comprehensive meta-analysis of prior research has found, overall, that children ages 1 to 8 were less likely to understand picture books when they read the digital, versus print, version. However, when digital picture books contain the right enhancements that reinforce the story content, they outperform their print counterparts. The results were published today in Review of Educational Research
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Tracing malaria's ecology using blood samples from birds
Malaria is the deadliest pathogen in human history. Nearly half the people on Earth are at risk of contracting the disease from the parasites that cause it. But humans aren't the only ones who can get these parasites—different forms are found in other animals, including birds. By studying the DNA of those strains, scientists can get a better picture of how malarial parasites live, which may give c
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