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Science News for December 21, 2020


Regulating off-centering distortion maximizes photoluminescence in halide perovskites

Researchers at HPSTAR have discovered a universal relationship between regulating off-centering distortion and maximizing photoluminescence in halide perovskites. By applying high pressure, they achieved optimal PL performance, ten-fold enhancement, and new paths to high-performance optoelectronic materials.

Ancient wolf pup mummy uncovered in Yukon permafrost

A remarkably preserved 57,000-year-old wolf pup named Zhùr has been uncovered in the Yukon, offering a unique window into the lives of ancient wolves. The mummy's genome analysis revealed that she was descended from wolves from Russia and Siberia, and her diet consisted mainly of aquatic resources like salmon.

SourceCell Press·JournalCurrent Biology·DateDec 21, 2020

Study published on the well-being of small business workers during COVID-19

A recent study by the University of Colorado Anschutz Medical Campus found that employees in small businesses with strong health and safety climates reported better well-being during the COVID-19 pandemic. The research team distributed a COVID-specific survey to 491 employees from 30 small businesses across Colorado, revealing a positi...

SourceUniversity of Colorado Anschutz Medical Campus·JournalJournal of Occupational and Environmental Medicine·DateDec 21, 2020

Study examines attitudes toward non-native birds

A new study from Cornell University examines public attitudes towards non-native birds and whether people are willing to manage them to protect native cavity-nesting birds. Researchers found that citizen-science project participants were more likely to have negative views of non-native species and undertake management practices.

SourceCornell University·JournalJournal of Environmental Management·DateDec 21, 2020

Development of plaques in Alzheimer's disease resolved

A team of researchers from Ruhr-Universität Bochum and Vrije Universiteit Amsterdam have determined the development stages of Aβ fibrils, which form the basis of Alzheimer's disease plaques. The study provides new insights into the formation of oligomers, potentially harmful structures that contribute to the toxic effect of Aβ.

SourceRuhr-University Bochum·JournalActa Neuropathologica Communications·DateDec 21, 2020

Despite same treatment, obese women face more risks for postpartum hemorrhage complications

A USF Health-Tampa General Hospital study found that obese women experience worse outcomes after postpartum hemorrhage, even with the same medical treatment. The researchers suggest that certain groups of high-risk obstetric patients, such as obese women, may need additional support or a different treatment protocol.

SourceUniversity of South Florida (USF Health)·JournalAmerican Journal of Perinatology·DateDec 21, 2020

How to be happier in 2021

Research suggests that goals involving helping others are more satisfying and lead to increased happiness. Acts of benevolence increase positive mood and energy, while narrow self-focused concerns can lead to decreased happiness. Experts recommend focusing on contributing to the world for a happier life.

SourceUniversity of Rochester·JournalJournal of Personality and Social Psychology·DateDec 21, 2020

Brain stem cells divide over months

Researchers have discovered that brain stem cells in the hippocampus of mice can divide repeatedly over several months, leading to new insights into the formation of nerve cells. This finding has significant implications for future therapeutic approaches to conditions such as depression and Alzheimer's disease.

SourceUniversity of Zurich·JournalNature Neuroscience·DateDec 21, 2020

Invasive in the U.S., lifesaver Down Under

A new study published in Ecology has discovered that monitor lizards are ecosystem engineers, creating complex burrow systems used by various animal communities. These systems provide critical shelter and resources, but their destruction due to invasive species like the cane toad threatens ecosystem balance.

SourceUniversity of South Florida·JournalEcology·DateDec 21, 2020

What if clean air benefits during COVID-19 shutdown continued post-pandemic?

A new study by Columbia University Mailman School researchers simulates the potential future health and economic benefits from sustained air quality improvements. They estimate cumulative benefits of clean air during a five-year period would amount to thousands of avoided cases of illness and death, as well as associated economic benef...

New engine capability accelerates advanced vehicle research

Researchers at Oak Ridge National Laboratory have accelerated a research engine that provides an unprecedented view inside the atomic-level workings of combustion engines in real time. The engine, built to run on a neutron beam line, allows investigation of structural changes in new alloys designed for high-temperature, advanced combus...

SourceDOE/Oak Ridge National Laboratory·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Virtual kidney transplant evaluation allows patients to be evaluated from home

A virtual telehealth platform allows patients to undergo comprehensive evaluation for kidney transplantation from the comfort of their own homes. This innovative approach has enabled the Medical University of South Carolina's transplant program to maintain access to life-saving surgeries despite pandemic restrictions, with over 282 pat...

SourceAmerican College of Surgeons·JournalJournal of the American College of Surgeons·DateDec 21, 2020

TRIUMF's CANREB facility marks first beam

Triumphs in achieving first beam delivery for ARIEL's CANREB facility, enhancing TRIUMF's nuclear physics program and global leadership in isotope production. The milestone ushers in a new era of scientific advancements and real-world impact for Canadians and the world.

SourceTRIUMF·DateDec 21, 2020

Light signal emitted during photosynthesis used to quickly screen crops

Researchers have developed a method to quickly screen crops by analyzing the light signal emitted during photosynthesis, known as Solar Induced Fluorescence (SIF). This signal provides critical insights into photosynthesis, which could lead to improving crop yields and feeding humanity.

Excess mortality in California during COVID-19 pandemic

A study estimated excess deaths in California between March and August due to the COVID-19 pandemic, highlighting disparities by age, sex, race/ethnicity, and educational level. The results showed significant mortality increases among these groups, emphasizing the need for targeted interventions and resources.

SourceJAMA Network·JournalJAMA Internal Medicine·DateDec 21, 2020

Novel combination therapy may help overcome mTOR drug resistance in AML

Researchers at Cincinnati Children's Hospital Medical Center have discovered a novel method to boost the effectiveness of mTOR inhibitors against acute myeloid leukemia (AML) by targeting alternative signaling pathways. The study suggests using a combination therapy that combines an mTOR inhibitor with other drugs inhibiting CDK9, c-My...

SourceCincinnati Children's Hospital Medical Center·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

DFG to fund 7 new Research Units

The DFG is establishing seven new Research Units to investigate topics such as gender-specific differences in immune responses and the development of more resistant dental prostheses. The units will receive a total of €25 million, with five teams funded for up to two four-year periods and two others for two three-year periods.

Targeting the deadly coils of Ebola

A team of researchers used Stampede2 and Bridges simulations to analyze the stability of the Ebola virus's nucleocapsid, a protein shell that protects its genetic material. The study found that RNA helps stabilize the nucleocapsid through electrostatic interactions with its nucleoproteins, providing potential targets for new therapeutics.

SourceUniversity of Texas at Austin, Texas Advanced Computing Center·JournalThe Journal of Chemical Physics·DateDec 21, 2020

Synergy between biotech and classical control tactics rid US of invasive pest

A new study by ARS and UofA scientists found that genetically engineered cotton and sterile pink bollworm moths synergistically suppressed the pest. This collaboration among farmers, scientists, and industry resulted in a 90% reduction of pink bollworm population and saved US cotton farmers $192 million from 2014 to 2019.

SourceUS Department of Agriculture - Agricultural Research Service·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Sixfold increase in risk

A new study published in The Lancet Global Health found that cervical cancer risk is six times higher in HIV-infected women worldwide. Southern and Eastern Africa are particularly affected due to high rates of HIV and Human Papillomavirus (HPV) infections.

SourceTechnical University of Munich (TUM)·JournalThe Lancet Global Health·DateDec 21, 2020

Scientists and philosopher team up, propose a new way to categorize minerals

Scientists propose a new way to categorize minerals by incorporating historical data, highlighting the importance of understanding a sample's formation process. The IMA system is criticized for being time-independent, while the proposed approach uses 'historical natural kinds' to reflect changes in Earth's diversity.

SourceCarnegie Institution for Science·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Discovery: How Colorado potato beetles beat pesticides

A study by University of Vermont researchers reveals that Colorado potato beetles develop resistance to pesticides through epigenetic changes, which can be passed on to descendants across at least two generations. These changes allow the beetles to rapidly adapt to new pesticides without requiring genetic mutations.

SourceUniversity of Vermont·JournalEvolutionary Applications·DateDec 21, 2020

Muddying the waters: weathering might remove less atmospheric CO2 than thought

New research suggests that weathering of rocks at Earth's surface may be weaker in removing greenhouse gases from the atmosphere than previously estimated. The team found an additional source of sodium in river waters across the globe, not from weathered silicate rocks as assumed, but from very old clays being eroded in river catchments.

SourceUniversity of Cambridge·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Concerns over infecting others matter more for vaccination in sparsely populated areas

Researchers found that prosocial concerns drive higher vaccination rates in rural areas than urban ones. The study suggests emphasizing prosocial aspects of vaccination can reduce the rural-urban disparity in vaccination. Vaccination protects not only individuals but also communities, highlighting its social nature.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Scientists complete yearlong pulsar timing study after reviving dormant radio telescopes

A team of scientists from Rochester Institute of Technology and Instituto Argentino de Radioastronomiá completed a yearlong pulsar timing study using two upgraded radio telescopes in Argentina. The observations provided accurate bounds to gravitational waves, increasing the sensitivity of existing pulsar timing arrays.

SourceRochester Institute of Technology·JournalThe Astrophysical Journal·DateDec 21, 2020

Coastal ecosystems 'bright spots'

Researchers identified successful coastal 'bright spots' for marine ecosystem restoration, which have delivered positive impacts for decades. These examples from around the world showcase effective techniques for restoring saltmarshes, coral reefs, and seagrass meadows, highlighting potential solutions to save struggling marine areas.

SourceCSIRO Australia·JournalCurrent Biology·DateDec 21, 2020

The upside of volatile space weather

A Northwestern University study discovered that stellar flares could play an important role in a planet's atmospheric evolution and habitability. Flares may drive a new chemical equilibrium in a planet's atmosphere, potentially making it easier to detect signs of life.

SourceNorthwestern University·JournalNature Astronomy·DateDec 21, 2020

January issue ofSLAS Discovery"Cryo-EM: The Resolution Revolution and Drug Discovery"

The January issue of SLAS Discovery features the cover article 'Cryo-EM: The Resolution Revolution and Drug Discovery', which explores how Cryo-EM is influencing drug discovery projects. The journal also includes 13 articles on original research topics, such as high-throughput screening methods and protein-ligand interactions.

Corona: How the virus interacts with cells

Scientists have created a global atlas of direct interactions between SARS-CoV-2 RNA and the human proteome, revealing 18 key host proteins involved in viral replication. The study also identified two crucial regulators, CNBP and LARP1, which can inhibit viral replication, offering new avenues for treatment.

SourceUniversity of Würzburg·JournalNature Microbiology·DateDec 21, 2020

Brain tissue yields clues to causes of PTSD

A post-mortem analysis of brain tissue from people with PTSD reveals distinct differences in gene expression patterns between those with and without the disorder. These changes affect two cell types - interneurons and microglia - which may contribute to impaired stress response, particularly in women.

SourceYale University·JournalNature Neuroscience·DateDec 21, 2020

Variety: Spice of life for bumble bees

Researchers found that bumble bees collect a wide range of pollen from different plant species to satisfy their protein needs, whereas honey bees focus on a limited number of target plants. This study highlights the importance of considering diverse foraging behavior in nature conservation efforts.

SourceUniversity of Göttingen·JournalMolecular Ecology·DateDec 21, 2020

How one pain suppresses the other

Researchers investigate the body's own pain control system using Conditioned Pain Modulation (CPM) and find that two different stimuli can reduce pain to a similar degree. The study used electrical stimulation of the skin as a new test stimulus, allowing for objective measurement of brain activity.

SourceRuhr-University Bochum·JournalBMC Neuroscience·DateDec 21, 2020