- ScienceDaily
- 21/4/5 23:56
Black Americans experienced the highest per capita excess death rates, while regional surges contributed to higher excess death rates from COVID-19 and other causes, a new study finds.
232 articles from MONDAY 5.4.2021
Black Americans experienced the highest per capita excess death rates, while regional surges contributed to higher excess death rates from COVID-19 and other causes, a new study finds.
Climate change poses new challenges to coffee production in Colombia, as it does to agricultural production anywhere in the world, but a new study shows effects vary widely depending on where the coffee beans grow.
One day, humankind may step foot on another habitable planet. That planet may look very different from Earth, but one thing will feel familiar—the rain.
The team of scientists and engineers behind NASA's Curiosity rover named a hill along the rover's path on Mars in honor of a recently deceased mission scientist. A craggy hump that stretches 450 feet (120 meters) tall, "Rafael Navarro mountain" is located on Mount Sharp in northwest Gale Crater.
In a new study, researchers found nearly half of those who share explicit images of others without permission feel remorse after the fact and 24% try to deflect blame onto victims. Amy Hasinoff, a researcher at the University of Colorado Denver, joined Danish researcher Sidsel K. Harder, to take a deeper dive into the issue of sexual abuse and image sharing.
A new study by Stanford University biologists finds an explanation for the idea that physical characteristics such as skin pigmentation are "only skin deep." Using genetic modeling, the team has found that when two populations with distinct traits combine over generations, traits of individuals within the resulting "admixed" population come to reveal very little about individuals' ancestry. Their...
If your day started with a cup of coffee, there's a good chance your morning brew came from Colombia. Home to some of the finest Arabica beans, the country is the world's third largest coffee producer. Climate change poses new challenges to coffee production in Colombia, as it does to agricultural production anywhere in the world, but a new University of Illinois study shows effects vary widely...
Shortly after President Biden was inaugurated, the man who was being given command of his coronavirus response had a message about what America needed to do. “We’re 43rd in the world in genomic sequencing,” said Jeff Zients at a press conference in January. “Totally unacceptable.” The answer, he suggested, was to “do the appropriate amount…
A team of polymer science and engineering researchers has demonstrated for the first time that the positions of tiny, flat, solid objects integrated in nanometrically thin membranes - resembling those of biological cells - can be controlled by mechanically varying the elastic forces in the membrane itself. This research milestone is a significant step toward the goal of creating ultrathin flexible...
A team of polymer science and engineering researchers at the University of Massachusetts Amherst has demonstrated for the first time that the positions of tiny, flat, solid objects integrated in nanometrically thin membranes—resembling those of biological cells—can be controlled by mechanically varying the elastic forces in the membrane itself. This research milestone is a significant step...
A team led by a biomedical scientist at the University of California, Riverside, has developed a new RNA-sequencing method— "Panoramic RNA Display by Overcoming RNA Modification Aborted Sequencing," or PANDORA-seq—that can help discover numerous modified small RNAs that were previously undetectable.
High levels of biodiversity in aquatic settings offers a wide range of vitamins, minerals, and fatty acids crucial for human health, a range of nutrients that are lacking in ecosystems where the number of species have been reduced by overfishing, pollution, or climate change, researchers report April 5 in the journal Proceedings of the National Academy of Sciences.
Overfishing likely did not cause the Atlantic cod, an iconic species, to evolve genetically and mature earlier, according to a study led by Rutgers University and the University of Oslo—the first of its kind—with major implications for ocean conservation.
SARS-CoV-2 showed the world with devastating clarity the threat undetected viruses can pose to global public health. SpillOver, a new web application developed by scientists at the University of California, Davis, and contributed to by experts from all over the world, ranks the risk of wildlife-to-human spillover for newly-discovered viruses.
A growing body of evidence suggests that biodiversity loss increases our exposure to both new and established zoonotic pathogens. Restoring and protecting nature is essential to preventing future pandemics. So reports a new Proceedings of the National Academy of Sciences (PNAS) paper that synthesizes current understanding about how biodiversity affects human health and provides recommendations for...
Nine of the hottest years in human history have occurred in the last decade. Without a major shift in this climate trajectory, the future of life on Earth is in question. Should humans, whose fossil-fueled society is driving climate change, use technology to put the brakes on global warming?
How do we become a complex, integrated multicellular organism from a single cell?
Researchers have been exploring the use of low-cost materials to create rechargeable batteries that will make energy storage more affordable. Now, they have shown that a new technique incorporating aluminum results in rechargeable batteries that offer up to 10,000 error-free cycles.
Biomedical scientists have developed a new RNA-sequencing method -- 'Panoramic RNA Display by Overcoming RNA Modification Aborted Sequencing,' or PANDORA-seq -- that can help discover numerous modified small RNAs that were previously undetectable.
Head-mounted device on free-moving mice reveals how regions of the brain interact.
Researchers have demonstrated an atom-based sensor that can determine the direction of an incoming radio signal, another key part for a potential atomic communications system that could be smaller and work better in noisy environments than conventional technology.
In an effort to save her beloved animals, Kathy Janson, a Maine Coon cat enthusiast reached out to a University of Cincinnati researcher to find a way to help her pets who were developing heart troubles.
Researchers at the National Institute of Standards and Technology (NIST) and collaborators have demonstrated an atom-based sensor that can determine the direction of an incoming radio signal, another key part for a potential atomic communications system that could be smaller and work better in noisy environments than conventional technology.
Palmer Amaranth is a high-impact agronomic weed species that has cost the United States agriculture industry billions of dollars since its discovery outside of its native range in the southwestern U.S. and northwestern Mexico. Over the last 20 years, it has moved further north, and now poses a major threat to corn, soybean, and cotton growers across the south and Midwest regions of the United...
Stories all reported potential benefits of tests, some using smartphone or watch, but 60% failed to mention limitations Medical tests often offered through smartphones and watches and designed to detect the early signs of disease are being promoted by media without mention of their potential harms, an Australian study published in the leading US medical journal JAMA Internal Medicine has...
Scientists report a breakthrough involving a material called borophane, a sheet of boron and hydrogen a mere two atoms in thickness.
Researchers tracked 20,000 cells to find out what made each one unique and to learn how the cells coordinate to build a leaf. Collaboration with a visual artist added additional dimensions to the work.
Forever chemicals are known for being water-, heat- and oil-resistant, which makes them useful in everything from rain jackets to firefighting foams.
A team of researchers at Oak Ridge National Laboratory and the University of Tennessee have developed a concrete mix that demonstrated high early strength within six hours of mixing, potentially doubling the production capacity for the precast industry.
Steam and lava spurted Monday from a new fissure at an Icelandic volcano that began erupting last month, prompting the evacuation of hundreds of hikers who had come to see the spectacle.
The field scientists working on the Vanishing Glaciers project aren't afraid of heights. They climb to the icy peaks of mountain ranges from the Himalayas to the Alps, equipped with vials, pipettes, thermometers and liquid-nitrogen cylinders (which they've nicknamed Dido and Fido). Their goal is to collect samples of the microorganisms living in glacier-fed streams and bring them back to EPFL for...
A new piece of software developed at Caltech makes it easier to study the behavior of electrons in materials—even materials that have been predicted but do not yet exist. The software, called Perturbo, is gaining traction among researchers.
COVID-19 has impacted women and girls around the globe in adverse ways. However, little attention has been paid to women and girls in humanitarian settings, those whose safety has already been reduced due to conflict, natural disaster or displacement. For these women and girls, COVID-19 has made them particularly vulnerable to increases in gender-based violence.
Bacterial DNA methylation occurs in diverse sequence contexts and plays important functional roles in cellular defense and gene regulation. An increasing number of studies have reported that bacterial DNA methylation has important roles affecting clinically relevant phenotypes such as virulence, host colonization, sporulation, biofilm formation, among others. Bacterial methylomes contain three...
The ocean's "biological pump" describes the many marine processes that work to take up carbon dioxide from the atmosphere and transport it deep into the ocean, where it can remain sequestered for centuries. This ocean pump is a powerful regulator of atmospheric carbon dioxide and an essential ingredient in any global climate forecast.
Although stratospheric ozone protects us by filtering out the sun's ultraviolet radiation, tropospheric ozone is a harmful pollutant. A new study has shown that ozone in the lower layers of the atmosphere decreases crop yields in maize and changes the types of chemicals that are found inside the leaves.
Drought is returning to California as a second, consecutive parched winter draws to a close in the usually wet north, leaving the state's major reservoirs half empty.
A new study from the University of Central Florida suggests that masks and a good ventilation system are more important than social distancing for reducing the airborne spread of COVID-19 in classrooms.
A new publication from the Dauphin Island Sea Lab's Marine Mammal Research Program (DISL) examines how bridge-building and in-water construction activities may affect manatees and other large aquatic species. The article, which was recently published in The Journal of Wildlife Management, addresses the direct causes of injury and death and the longer-term, cumulative impacts on manatees and their...
The diffraction limit, also known as the Abbe diffraction limit in optics, poses a great challenge in many systems that involve wave dynamics, such as imaging, astronomy, and photolithography. For example, the best optical microscope only possesses resolution around 200 nm, but the physical size of the photolithography process with an excimer laser is around tens of nanometers. Meanwhile, physical...
In 2018, Kang-Kuen Ni and her lab earned the cover of Science with an impressive feat: They took two individual atoms, a sodium and a cesium, and forged them into a single dipolar molecule, sodium cesium.
Scientists have uncovered an extraordinary self-improving property that transforms an ordinary semiconductor into a highly efficient and stable artificial photosynthesis device.
A new study suggests that masks and a good ventilation system are more important than social distancing for reducing the airborne spread of COVID-19 in classrooms. The research comes at a critical time when schools and universities are considering returning to more in-person classes in the fall.
A new study has shown that ozone in the lower layers of the atmosphere decreases crop yields in maize and changes the types of chemicals that are found inside the leaves.