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Clinicians using a new viral screening test can not only diagnose COVID-19 in a matter of minutes with a portable, pocket-sized machine, but can also simultaneously test for other viruses -- like influenza -- that might be mistaken for the coronavirus. At the same time, they can sequence the virus, providing valuable information on the spread of COVID-19 mutations and variants.

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This 'metal-eating' robot can follow a metal path without using a computer or needing a battery. By wiring the power-supplying units to the wheels on the opposite side, the robot autonomously navigates towards aluminum surfaces and away from hazards that block its energy source.

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At the same time the pandemic was expanding the number of people working remotely, children nationwide began attending school virtually. The result? An increase in domestic work that fell disproportionately on the shoulders of mothers, according to a new study by sociologists.

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Scientists up to create the next version of Xenobots - tiny biological robots that self-assemble, carry out tasks, and can repair themselves. Now they can move faster, and record information.

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Comorbidities such as heart disease, respiratory disease, renal disease and cancer lead to an increased risk of death from COVID-19, according to new research.

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A research team of international space scientists has found new evidence of a low-altitude meteoritic touchdown event reaching the Antarctic ice sheet 430,000 years ago.

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Researchers have assessed virus growth and activation of the cellular defense mechanisms in the respiratory tract. They have shown that natural temperature differences that exist in the upper and lower respiratory tract have a profound influence on SARS-CoV-2 replication and subsequent innate immune activation in human cells. The findings can help to develop antiviral drugs and preventive measures.

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Researchers have developed a tamper-proof temperature indicator that can alert health care workers when a vial of vaccine reaches an unsafe temperature for a certain period, which could help ensure distribution of effective mRNA vaccines.

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A genetic analysis of virus samples suggests that the UK-originating variant, which is 40-50 percent more transmissible, entered the country in late November 2020.

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Diamonds that formed deep in the Earth's mantle contain evidence of chemical reactions that occurred on the seafloor. Probing these gems can help geoscientists understand how material is exchanged between the planet's surface and its depths.

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A new study has found the first evidence of sophisticated breathing organs in 450-million-year-old sea creatures. Contrary to previous thought, trilobites were leg breathers, with structures resembling gills hanging off their thighs.

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New research has found that using low-cost psychological interventions can reduce vehicle engine idling and in turn improve air quality, especially when there is increased traffic volume at railway level crossings.

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For the first time, organic molecules could be detected in such old liquids as possible nutrients for primordial microbes.

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In a new experiment, researchers show for the first time how the velocities of Janus particles relate to the physical properties of nearby barriers.

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Scientists believe they have pinpointed our most distant animal relative in the tree of life and, in doing so, have resolved an ongoing debate. Their work finds strong evidence that sponges - not more complex comb jellies - were our most distant relatives.

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Researchers who demonstrated superconducting materials at room temperatures last fall, now report a new technique in the quest to also create the materials at lower pressures. They describe separating hydrogen atoms from yttrium with a thin film of palladium inside a diamond anvil.

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A new study reveals that an evidence-based treatment may 'fix' a human short circuit that leads to anxiety and, with the help of brain imaging, might predict treatment outcomes for adolescents with anxiety disorders. Researchers say this could determine medication effectiveness more quickly to help patients.

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A targeted opioid that only treats diseased tissues and spares healthy tissues relieves pain from inflammatory bowel disease without causing side effects, according to new research.

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The information comes from the diets and health outcomes of 134,297 people from 21 countries spanning five continents, who were tracked by researchers for data on meat consumption and cardiovascular illnesses.

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Children born with a severe form of Leber congenital amaurosis are blind from birth. Researchers have developed a gene therapy that not only stops but reverses the damage to cone photoreceptor cells in a canine model of the condition.

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Researchers have shown for the first time that animal DNA shed within the environment can be collected from the air.

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Regular exercise and a healthy diet for middle-aged adults may be key to achieving optimal cardiometabolic health later in life. Cardiometabolic health risk factors include the metabolic syndrome, a cluster of health conditions such as excess body fat around the waist, high blood pressure, high blood sugar, abnormal cholesterol or triglyceride levels that increase the risk of heart disease, stroke and Type 2 diabetes.

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Scientific understanding of the brain regions responsible for speech and communication is limited. Consequently, knowledge of how to improve challenges such as speech impediments or language acquisition is limited as well. Using an ultra-lightweight, wireless implant, a team is researching songbirds - one of the few species that share humans' ability to learn new vocalizations - to improve scientific understanding of human speech.

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For the first time, researchers have hard evidence that human-made hexagonal diamonds are stiffer than cubic diamonds found in nature and often used in jewelry. Hexagonal diamonds have been found at some meteorite impact sites and others have been made in labs but were either too small or existed to briefly for measurement. Now scientists have created hexagonal diamonds large enough to measure their stiffness using sound waves.

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Menopause typically signals the end of a woman's ability to become pregnant. However, in a small new study, a novel approach of administering platelet-rich plasma and gonadotropins near the ovarian follicles is showing promise in restoring ovarian function.

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Bangladesh's floating gardens, built to grow food during flood seasons, could offer a sustainable solution for parts of the world prone to flooding because of climate change, a new study has found.

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More research is needed on the environmental impact of sunscreen on the world's coral reefs.

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Superbly preserved braincase of this new species is an important find - it suggests there was a greater diversity and abundance of abelisaurids late in dinosaurs' era than previously thought.

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Human disturbance in urban environments makes some squirrels fail, but others perform better in novel problem-solving.

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New research looked at a newly discovered, endangered songbird located only in South America -- the Iberá Seedeater -- and found that this bird followed a very rare evolutionary path to come into existence at a much faster pace than the grand majority of species.

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On sultry summer afternoons, heating, ventilation and air conditioning (HVAC) systems provide much-needed relief from the harsh heat and humidity. These systems, which often come with dehumidifiers, are currently not energy efficient, guzzling around 76% of the electricity in commercial and residential buildings.

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Whether parents prefer a conformance-oriented or independence-oriented supplemental education program for their children depends on political ideology, according to a study of more than 8,500 American parents.

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Anthropogenic climate change is one of the foremost scientific and societal challenges. In part, our response to this global challenge requires an enhanced understanding of how the Earth's surface responds to episodes of climatic heating and cooling.

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Earth's sea level has remained fairly constant during the last 541 million years, but a new study suggests the planet may have been covered by a vast global ocean 4 to 3.2 billion years ago.

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Scientists have identified the protein that was the missing evolutionary link between two ancient algae species - red algae and cryptophytes.

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Primary sclerosing cholangitis (PSC) is a rare, chronic, inflammatory disease of the bile ducts and is difficult to treat, since its causes have not yet been adequately researched. An international research consortium has now succeeded in identifying a new prognostic factor for PSC from liver biopsies. This is so-called cellular ER stress.

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Studies indicate a link between children's cardiorespiratory fitness and their school performance: the more athletic they are, the better their marks in the main subjects. Similarly, cardiorespiratory fitness is known to benefit cognitive abilities. But what is the real influence of such fitness on school results? Researchers tested pupils from eight Geneva schools. Their results show that there is an indirect link with cardiorespiratory fitness influencing cognitive abilities, which in turn, influence school results.

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A global map of agricultural land across 168 countries has revealed that 64 percent of land used for agriculture and food crops is at risk of pesticide pollution. Almost a third of these areas are considered to be at high-risk.

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Beetle outbreaks impacted around 40 percent of the areas studied in Colorado, Wyoming and New Mexico. But the effects of these outbreak varied due to differences in forest structures and species composition across the region.

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Superconductivity is known to be easily destroyed by strong magnetic fields. Researchers have discovered that a superconductor with atomic-scale thickness can retain its superconductivity even when a strong magnetic field is applied to it. The team has also identified a new mechanism behind this phenomenon. These results may facilitate the development of superconducting materials resistant to magnetic fields and topological superconductors composed of superconducting and magnetic materials.

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Working with fruit flies, scientists say they have identified a new molecular pathway that helps steer moving cells in specific directions. The set of interconnected proteins and enzymes in the pathway act as steering and rudder components that drive cells toward an 'intended' rather than random destination, they say.

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A reproducibility crisis is ongoing in scientific research, where many studies may be difficult or impossible to replicate and thereby validate, especially when the study involves a very large sample size. Now researchers have developed a statistical tool that can accurately estimate the replicability of a study, thus eliminating the need to duplicate the work and effectively mitigating the reproducibility crisis.

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Researchers have revealed the necessary conditions for the robust transport of entangled states of two-photon light in photonic topological insulators, paving the way the towards noise-resistant transport of quantum information.

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Those who need to change their eating habits to normalize their blood pressure should start with a fast. Scientists explain why patients can use it as a tool to improve their health in the long term.

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The latest gene editing technology, prime editing, expands the 'genetic toolbox' for more precisely creating disease models and correcting genetic problems, scientists say.

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Artificial Intelligence is now capable of generating novel, functionally active proteins. The new results represent a breakthrough in the field of synthetic proteins.

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Researchers have succeeded for the first time in measuring brain waves directly via a cochlear implant. These brainwaves indicate in an objective way how good or bad a person's hearing is. The research results are important for the further development of smart hearing aids.

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A type of glaucoma called normal-tension glaucoma is associated with an increased risk of cognitive impairment and possibly dementia, finds new research.

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We are not venomous, and neither are mice - but within our genomes lurks that potential, suggest scientists The researchers found that the genetic foundation required for oral venom to evolve is present in both reptiles and mammals. The study also provides the first concrete evidence of an underlying molecular link between venom glands in snakes and salivary glands in mammals.

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In a two-year study that could help guide educators developing the post-pandemic new normal, student groups at the assigned to make video presentations showed more creativity and risk-taking than groups making conventional in-person presentations.

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Scientists have developed a diagnostic test, which makes use of CRISPR, that can detect the virus that causes COVID-19 even after it has gone through mutations. Since viruses have the ability to evolve over time, a diagnostic test robust against potential mutations is a crucial tool for tracking and fighting the pandemic.

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While bionic devices are very safe, there has been no standard test for moisture leakage into the devices - until now. Researchers say a standard test will be increasingly important as bionic implants become more common.

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Prolonged and potentially destabilizing water shortages will become commonplace in Jordan by 2100, new research finds, unless the nation implements comprehensive reform, from fixing leaky pipes to desalinating seawater. Jordan's water crisis is emblematic of challenges looming around the world as a result of climate change and rapid population growth.

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One specific protein may be a master regulator for changing how cancer cells consume nutrients from their environments, preventing cell death and increasing the likelihood the cancer could spread, a study has shown.

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A doctoral student has identified a long-overlooked pattern in how plants evolved their equivalent of lungs -- tiny pores on the surfaces of leaves called stomata. Using specialized imaging techniques and a plant species not often found in laboratories, researchers say this discovery reveals a key difference in the evolution of plants that live on land versus those that can grow in water.

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Use of vouchers and coupons offered by pharmaceutical companies to defray patients' out-of-pocket drug costs is concentrated among a small number of drugs.

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Physical activity is important in preventing heart and blood vessel disease in young people so long as they don't undertake very strenuous activity on days when air pollution levels are high, according to a nationwide study of nearly 1.5 million people published in the European Heart Journal.

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Research into the flower preferences of pollinating moths may have delivered a vital clue to the simple factors needed for the emergence of new species.

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Why do some people with cold sores around their lips experience painful lesions, while others have no symptoms at all, yet still spread the virus? A new study finds that these differences could be due to variations in the way certain strains of herpes simplex (HSV-1) -- the virus that causes cold sores, as well as genital herpes -- activate gene expression in neurons.

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Ever thought about buying or building a bat box to help bats? Think carefully about the design and where you put it, researchers say.

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GlyNAC - a combination precursors of the natural antioxidant glutathione - improved many age-associated defects in older humans boosting muscle strength and cognition.

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In the Arctic, climate change and pollution are the biggest threats to top predators like narwals. Studying the animals' tusks reveals that diet and exposure to pollution have shifted over the past half century in response to sea-ice decline. Human emissions have also led to a sharp rise in the presence of mercury in recent years, according to an international team of researchers.

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The recommendations are clear: physical activity is good for mental health. But it also depends on how varied it is. That's what a new study shows, pointing to one of the reasons why well-being suffers during the pandemic.

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New fundamental physics research provides insights on the process of diffusion in complex systems such as living organisms. This new theoretical framework has broad implications for active surfaces, such as ones found in bacterial biofilms, active coatings, and pathogen-clearance mechanisms for human health.

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New genetic analysis and years of painstaking research has revealed that one of the world's most endangered marine mammals is actually two species rather than one, as scientists had long assumed.

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EU imports of products including palm oil, soybeans, and beef contribute significantly to deforestation in other parts of the world. In a new study, researchers evaluated over a thousand policy proposals for how the EU could reduce this impact, to assess which would have the largest potential to reduce deforestation - while also being politically feasible.

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It's not uncommon for people who experience a concussion to have moderate to severe headaches in the weeks after the injury. A new study has found a combination of two drugs, both common anti-nausea medications, given intravenously in the emergency room may relieve those headaches better than a placebo.

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A research group developed a game application for smartphones that estimates the possibility of carpal tunnel syndrome with machine learning. The program acquires the trajectory of the thumb during a game play in 30 sec -- 1 minute, and detects the possibility of the disease.

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Astronomers found a number of stellar eggs containing baby stars around the center of the Milky Way using the Atacama Large Millimeter/submillimeter Array (ALMA). Previous studies had suggested that the environment there is too harsh to form stars. These findings indicate that star formation is more resilient than researchers thought.

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Scientists have decoded the genomes of the deep-sea clam (Archivesica marissinica) and the chemoautotrophic bacteria (Candidatus Vesicomyosocius marissinica) that live in its gill epithelium cells. Through analysis of their genomic structures and profiling of their gene expression patterns, the research team revealed that symbiosis between the two partners enables the clams to thrive in extreme deep-sea environments.

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Hail severity will increase in most regions of the world while Australia and Europe are expected to experience more hailstorms as a result of climate change, an international review led by a UNSW Sydney researcher has found.

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A combination of esophageal brushing and extensive genetic sequencing of the sample collected can detect chromosome alterations in people with Barrett's Esophagus, identifying patients at risk for progressing to esophageal cancer, according to a new study.

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Astronomers have detected new faint aurora features, characterized by ring-like emissions, which expand rapidly over time. Scientists determined that charged particles coming from the edge of Jupiter's massive magnetosphere triggered these auroral emissions.

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Research shows that periodontitis, severe gum disease, is linked to higher blood pressure in otherwise healthy individuals. This study of 500 adults with and without gum disease found that approximately 50% of adults could have undetected hypertension. Promotion of good oral health could help reduce gum disease and the risk of high blood pressure and its complications.

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Artificial intelligence (AI) is becoming more common in many branches of industry and online retailing. Traditional lines of work, such as transport logistics and driving, are developing in a similar direction. Scientists have now investigated how efficient the use of AI is in the commercial management of trucks. Their answer: the best option is an intelligent combination of human decision-making and AI applications.

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Scientists have highlighted the key role of a protein called paxillin, which enables cells to perceive their environment and anchor at the right place with the help of cellular 'crampons'. Indeed, without functional paxillin, the cell is unable to attach properly and slips continuously. These results shed new light on how cells adhere or migrate, mechanisms essential to the good functioning of our organs, but also involved in the development of metastatic tumors.

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In the summer of 2020, hundreds of Larch Budmoths were observed on Vize Island, in the Russian High Arctic, likely transported over 1,200 km by air currents from Siberia. This is the first and only terrestrial invertebrate to ever be discovered on the island. This finding could mean that Vize island is less isolated from insect migrants than was commonly thought.

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A new study finds that coffee pulp, a waste product of coffee production, can be used to speed up tropical forest recovery on post agricultural land.

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Despite the enormous amount of research over the decades into lasers and their applications, there have been few ways to accurately, efficiently, and directly observe fine details of their interactions with materials. For the first time, researchers have found a way to acquire such data from a production laser using low-cost equipment that could vastly improve the accuracy of items cut or etched with lasers. Given the ubiquity of lasers, this could have wide-ranging implications in laboratory, commercial and industrial applications.

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Sustained low-intensity exercise does not completely counteract the effects of weightlessness on the heart muscle, which will atrophy over time in a gravity-free environment. Short bursts of repeated high-intensity activity during shorter space missions may be more successful in keeping the heart healthy.

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Scientists have revealed molecular mechanisms involved in eliminating unwanted cells in the body. A nuclear protein fragment released into the cytoplasm activates a plasma membrane protein to display a lipid on the cell surface, signalling other cells to get rid of it.

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The Environmental Protection Agency (EPA) is underestimating methane emissions from oil and gas production in its annual Inventory of U.S. Greenhouse Gas Emissions and Sinks, according to new research. The research team found 90 percent higher emissions from oil production and 50 percent higher emissions for natural gas production than EPA estimated in its latest inventory.

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New research has demonstrated that a magnetic uranium compound can have strong thermoelectric properties, generating four times the transverse voltage from heat than the previous record in a cobalt-manganese-gallium compound.

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Scientists are studying how signals sent from skeletal muscle affect the brain.

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Generally thought of as fierce horse-warriors, the Scythians were a multitude of Iron Age cultures who ruled the Eurasian steppe, playing a major role in Eurasian history. A new study analyzes genome-wide data for 111 ancient individuals spanning the Central Asian Steppe from the first millennia BCE and CE. The results reveal new insights into the genetic events associated with the origins, development and decline of the steppe's legendary Scythians.

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An ion channel called TRPC5 acts as a molecular cold sensor in teeth and could serve as a new drug target for treating toothaches.

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A new study finds the wettability of porous electrode surfaces is key to making efficient water-splitting or carbon-capturing systems.

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Researchers have demonstrated that stretching shape-memory polymers embedded with clusters of gold nanoparticles alters their plasmon-coupling, giving rise to desirable optical properties. One potential application for the material is a sensor that relies on optical properties to track an object or environment's thermal history.

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In a new study, researchers showcased that the way our brain processes information is fundamentally altered during hypnosis. The research helps to understand how hypnosis produces changes in a hypnotized person's behavior and subjective experiences.

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Researchers have identified and characterized a novel neural circuit that mediates the reciprocal control of obesity and depression in mouse models, and a potential therapy.

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Every year, an estimated four percent of the world's vegetated land surface burns, leaving more than 250 megatons of carbonized plants behind. A study has now recorded elevated concentrations of environmentally persistent free radicals (EPFR) in these charcoals - in some cases even up to five years after the fire. These EPFR may generate reactive substances, which in turn harm plants and living organisms.

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Researchers developed a general methodology for the reproducible fabrication of high efficiency perovskite solar cells.

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A research team has succeeded in converting flat nitrogen-containing molecules into three-dimensional structures. These now significantly expand the range of molecules that chemists can draw on in their search for new active ingredients.

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From microwave ovens to Wi-Fi connections, the radio waves that permeate the environment are not just signals of energy consumed but are also sources of energy themselves. An international team of researchers has developed a way to harvest energy from radio waves to power wearable devices.

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A researcher examined the role of cholesterol in both Alzheimer's disease and Type 2 diabetes to identify a small molecule that may help regulate cholesterol levels in the brain, making it a potential new therapeutic target for Alzheimer's disease.

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Materials that contain special polymer molecules may someday be able to warn us when they are about to fail, researchers said. Engineers have improved their previously developed force-sensitive molecules, called mechanophores, to produce reversible, rapid and vibrant color change when a force is applied.

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Since 1990, California has used its authority under the federal Clean Air Act to enact more aggressive rules on emissions from diesel vehicles and engines compared to the rest of the U.S. Extending these standards to the rest of the U.S. could dramatically improve the nation's air quality and health, particularly in lower income communities of color, finds a new analysis.

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Heightened activity in the brain, caused by stressful events, is linked to the risk of developing a rare and sometimes fatal heart condition called Takotsubo syndrome (TTS), also known as 'broken heart' syndrome, according to new research.

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Bald eagles, as well as other wildlife, have been succumbing to a mysterious neurodegenerative disease in the southern United States since the 1990s. New research identifies the cause of these deaths: a toxin produced by cyanobacteria that grow on invasive aquatic plants. The problem is potentially exacerbated by herbicides used to control those plants.

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Food scientists have made an antibacterial gel bandage using the discarded husks of the popular tropical fruit, durian.

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Feathers, an owl head and oars suggest the people in this Iron Age grave were prepared for a long journey.

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Even small increases in nitrogen dioxide levels in the air may be linked to increases in cardiovascular and respiratory deaths, according to new research.

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New research could inform where to one day search for signs of life on Saturn's moon Enceladus.

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Plastics are one of the world's largest polluters, taking hundreds of years to degrade in nature. A research team has created a high-quality bioplastic from wood byproducts that they hope can solve one of the world's most pressing environmental issues.

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Narcissism is driven by insecurity, and not an inflated sense of self, finds a new study, which may also explain what motivates the self-focused nature of social media activity.

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Expectant women are more likely to give birth early if they have high blood levels of a chemical used in flame retardants compared with those who have limited exposure, a new study finds.

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The ocean's mammals are at a crucial crossroads - with some at risk of extinction and others showing signs of recovery, researchers say.

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A new analysis of strontium isotopes in marine sediments has enabled scientists to reconstruct fluctuations in ocean chemistry related to changing climate conditions over the past 35 million years. The results provide new insights into the inner workings of the global carbon cycle and, in particular, the processes by which carbon is removed from the environment through the deposition of carbonates.

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Pregnant women who consumed the caffeine equivalent of as little as half a cup of coffee a day on average had slightly smaller babies than pregnant women who did not consume caffeinated beverages, according to a new study.

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The claim that old-growth forests play a significant role in climate mitigation, based upon the argument that even the oldest forests keep sucking CO2 out of the atmosphere, is being refuted. Researchers document that this argument is based upon incorrectly analyzed data and that the climate mitigation effect of old and unmanaged forests has been greatly overestimated. Nevertheless, they reassert the importance of old-growth forest for biodiversity.

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Scientists have taken the connection between wisdom, loneliness and biology one step further, reporting that wisdom and loneliness appear to influence -- and/or be influenced by -- microbial diversity of the gut.

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Engineers have developed an electronics-free, entirely soft robot shaped like a dragonfly that can skim across the water and react to environmental conditions such as pH, temperature or the presence of oil. The proof-of-principle demonstration could be the precursor to more advanced, autonomous, long-range environmental sentinels for monitoring a wide range of potential telltale signs of problems.

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Researchers have discovered that a novel surface they developed to harvest water from the air encourages tiny water droplets to move spontaneously into larger droplets. When researchers placed microdroplets of water on their liquid-lubricant surface, the microdroplets propelled themselves to climb, without external force, into larger droplets along an oily, ramp-shaped meniscus that forms from the lubricant around the larger droplets. The 'coarsening droplet phenomenon' formed droplets large enough for harvesting.

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The development of agriculture is often thought of as a human innovation in response to climate change or population pressure. A new manuscript challenges that concept, suggesting that plants that had already evolved adaptive traits for life among large-bodied grazing and browsing animals were more likely to prosper on a highly disturbed anthropogenic landscape.

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The first moments of the Universe can be reconstructed mathematically even though they cannot be observed directly. Physicists have greatly improved the ability of complex computer simulations to describe this moment, discovering that a complex network of structures can form in the first trillionth of a second after the Big Bang. These microscopic clumps have masses of only a few grams and fit into volumes much smaller than particles.

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Researchers from the SponGES project collected year-round video footage and hydrodynamic data from the mysterious world of a deep-sea sponge ground in the Arctic.

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A novel analysis of encounters between albatross and commercial fishing vessels across the North Pacific Ocean is giving researchers important new understanding about seabird-vessel interactions that could help reduce harmful encounters.

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Scientists recruited a world-leading microscope to capture atomic-resolution, high-speed images of gold atoms self-organizing, falling apart, and then reorganizing many times before settling into a stable, ordered crystal.

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A recent study found that when people feel they have resolved an argument, the emotional response associated with that disagreement is significantly reduced and, in some situations, almost entirely erased.

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An international team of scientists presents an analysis of sediments from a cave in northeast Greenland, that cover a time period between about 588,000 to 549,000 years ago. This interval was warmer and wetter than today, the cave deposits provide an outlook in a possible future warmer world due to climate change.

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Living organisms, from bacteria to animals and humans, can perceive their environment and process, store and retrieve this information. They learn how to react to later situations using appropriate actions. A team of physicists have developed a method for giving tiny artificial microswimmers a certain ability to learn using machine learning algorithms.

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An innovator developed a new approach to creating popular thin films for devices across a broad range of fields, including optics, acoustics and electronics. Epitaxial lithium niobate (LNO) thin films are an attractive material for electronics and other devices. These films offer flexibility and other properties that are important to manufacturers.

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New research which surveyed participants from the UK and Australia has found that despite having the best intentions, most people give up on their New Year resolutions within the first month.

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Scientists have succeeded in continuous monitoring of a subglacial discharge plume, providing a deeper understanding of the glacier-fjord environment.

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Medieval and early modern lawyers chose to write on sheepskin parchment because it helped prevent fraud, new analysis suggests.

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Dining out is a popular activity worldwide, but there has been little research into its association with health outcomes. Investigators looked at the association between eating out and risk of death and concluded that eating out very frequently is significantly associated with an increased risk of all-cause death, which warrants further investigation.

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When clinical trials were conducted to determine the immunogenicity -- the ability to elicit an immune response -- for the first two vaccines marshaled against SARS-CoV-2the virus that causes COVID-19, one group was not among those included: people who have received solid organ transplants and others (such as those with autoimmune disorders) who are immunocompromised.

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Researchers have uncovered possible reasons for male vulnerability in the womb, and they've learned a specific maternal dietary supplement called docosahexanoic acid (DHA) may guard against the impact of maternal stress on unborn males during early development.

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The rise in atmospheric carbon dioxide concentration and concurrent climate change has led to yield reductions of grass-rich grassland vegetation in the past century.

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Scientists has found evidence that SARS-CoV-2, the virus that causes COVID-19, infects cells in the mouth. The findings point to the possibility that the mouth plays a role in transmitting SARS-CoV-2 to the lungs or digestive system via saliva laden with virus from infected oral cells. A better understanding of the mouth's involvement could inform strategies to reduce viral transmission within and outside the body.

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Filters made from tree branches can purify drinking water sources, a new study finds. Prototypes of these xylem filters, tested in India, show promise as a low-cost, natural filtration option.

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Anabolic androgenic steroids (AAS), a synthetic version of the male sex hormone testosterone, are sometimes used as a medical treatment for hormone imbalance, and its use is known to have many side effects, ranging from acne to heart problems to increased aggression. A new study now suggests that AAS can also have deleterious effects on the brain, causing it to age prematurely.

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Now a new study has found that people with cerebral small vessel disease who have blood-brain barrier leakage had more brain tissue damage over two years than people with less blood-brain barrier leakage.

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Pumpkin growers dread the tiny tan scabs that form on their fruit, each lesion a telltale sign of bacterial spot disease. The specks don't just mar the fruit's flesh, they provide entry points for rot-inducing fungus and other pathogens that can destroy pumpkins and other cucurbits from the inside out. Either way, farmers pay the price, with marketable yields reduced by as much as 90%.

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Archaeologists examined the remains of houses in ancient Maya cities and compared them with other Mesoamerican societies; they found that the societies with the most wealth inequality were also the ones that had governments that concentrated power with a smaller number of people.

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Reasons for more than a decade of black cherry regeneration decline in the Allegheny Hardwood Regions are not well-understood; a team of scientists looked at five leading hypotheses; they found that the most likely factors are pathogens and reduced nitrogen availability, and that black cherry may actually be a story of change on a much bigger scale.

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Scientists report a novel noninvasive treatment for brain disorders based on breakthroughs in both optics and genetics. It involves stimulation of neurons by means of radioluminescent nanoparticles injected into the brain and exposed to X-rays.

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A new study projecting the amount of heat stress residents of the region will experience in the future finds with 2 degrees Celsius of warming, the population's exposure to heat stress will nearly triple.

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