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Science News Archive December 2020 - Page 25


Page 25 of 39

Several U.S. populations and regions exposed to high arsenic concentrations in drinking water

A new study found significant inequalities in public drinking water arsenic exposure across US regions and sociodemographic subgroups. Despite a decline in national arsenic levels, Hispanic communities and those relying on groundwater continued to exceed maximum contaminant levels, raising environmental justice concerns.

SourceColumbia University's Mailman School of Public Health·JournalEnvironmental Health Perspectives·DateDec 9, 2020

How soil fungi respond to wildfire

Researchers analyzed soil samples from burned and unburned areas in California parks, finding that the oak woodland fungal community was less affected by wildfires than those in evergreen forests. This aligns with the fact that oak woodlands depend on regular fire to thrive.

SourceStanford University·JournalMolecular Ecology·DateDec 9, 2020

Scientists model photoluminescence kinetics in semiconductor nanoplatelets for better optoelectroni

Researchers from Skoltech and colleagues developed two models explaining the light-emitting behavior of semiconductor nanoplatelets, which are promising building blocks for optoelectronics. The models reveal trapping of excitons at surface defects and its interplay with diffusion as key reasons for complex kinetics.

SourceSkolkovo Institute of Science and Technology (Skoltech)·JournalPhysical Chemistry Chemical Physics·DateDec 9, 2020

Science of sandcastles is clarified, finally

Researchers at the University of Manchester have clarified the science behind sandcastle building by resolving a century-old mystery. They created artificial capillaries where water vapor can condense under ambient conditions, showing that the 150-year-old Kelvin equation remains surprisingly accurate even at an atomic scale.

SourceUniversity of Manchester·JournalNature·DateDec 9, 2020

Program reduces social isolation among middle-aged and older adults

A Community Connectors service can boost confidence in engaging with community activities and enhance social networks among older adults. The program has been shown to provide vital support for well-being during the COVID-19 pandemic, particularly for those who cannot access remote services.

SourceWiley·JournalHealth & Social Care in the Community·DateDec 9, 2020

UBCO researchers suggest stool transplants can battle serious infections

Researchers analyzed gut composition and DNA to identify key factors for successful fecal microbiota transplants, including the donor's microbiome and recipient's pre-transplant gut community structures. The study suggests that preparing donors' and patients' gut ecosystems prior to transplant may increase the likelihood of success.

SourceUniversity of British Columbia Okanagan campus·JournalScientific Reports·DateDec 9, 2020

The impact of the pandemic on the Brazilian labor market

The study found that black people and women were the most affected by the pandemic, with three informal workers losing jobs for every one formal worker terminated. The emergency aid program had a limited impact, mainly benefiting large employers and those on minimum wage, but failed to cover small and medium enterprises.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalIndian Journal of Labour Economics·DateDec 9, 2020

How neurons form long-term memories

Neuroscientists at Harvard Medical School have identified a critical gene, Fos, that allows neurons to rewire inputs from other neurons, enabling networks of disparate neurons to coordinate activity. This mechanism is thought to be essential for memory consolidation and recall.

SourceHarvard Medical School·JournalNature·DateDec 9, 2020

Shipworms' competitive sex frenzy caught on film

A study by the University of Portsmouth discovered that giant feathery shipworms engage in competitive mating, where larger worms have an advantage due to longer siphons. The researchers observed stages of sperm transfer and sparring between rival mates, revealing a sophisticated form of reproductive behavior.

SourceUniversity of Portsmouth·JournalBiology Letters·DateDec 9, 2020

Battling COVID-19 using UV light

Researchers at the University of New Mexico have found that combining certain polymers and oligomers with UV light can almost completely kill the coronavirus. This method provides a fast-acting and highly effective coating that reduces virus concentrations by five orders of magnitude.

SourceUniversity of New Mexico·JournalACS Applied Materials & Interfaces·DateDec 9, 2020

Social media messages help reduce meat consumption

A new study from Cardiff University shows that direct messages sent via Facebook chat can significantly reduce the amount of red and processed meat consumed by individuals. Participants reported a significant decrease in their meat consumption, with some even expressing a desire to reduce other types of meat they consume in the future.

SourceCardiff University·JournalFrontiers in Psychology·DateDec 9, 2020

How blood and wealth can predict future disability

A study from the University of East Anglia found that blood biomarkers such as cholesterol, inflammation, and liver function can predict future disability and healthcare demand. The researchers also discovered a pro-rich inequity in health care use, where people with higher incomes are more likely to seek medical attention.

SourceUniversity of East Anglia·JournalEconomics & Human Biology·DateDec 9, 2020