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Science News Archive November 2020


Page 1 of 43

Deep-sea volcanoes: Windows into the subsurface

Research at Brothers submarine arc volcano reveals distinct microbial communities shaped by magmatic gases and hydrothermal fluids, highlighting the complexity of subsurface geology in forming high biodiversity. Over 90 new bacterial and archaeal families are discovered, providing insights into life's evolution on Earth.

SourcePortland State University·JournalProceedings of the National Academy of Sciences·DateNov 30, 2020

Cortex over reflex: Study traces circuits where executive control overcomes instinct

A new study by MIT neuroscientists demonstrates that neurons in the anterior cingulate cortex project connections into an evolutionarily older region called the superior colliculus, overriding its basic commands for reflexive movement. The research shows how inhibitory control from the ACC modulates the SC's response to facilitate exec...

SourcePicower Institute at MIT·JournalNature Communications·DateNov 30, 2020

Fit gamers challenge 'fat' stereotype, new esports research

A new study by Queensland University of Technology found that esports players are up to 21% healthier than the general population, with many engaging in over an hour of physical exercise per day. The research also showed that top esports players were significantly more physically active and less likely to smoke or drink daily.

SourceQueensland University of Technology·JournalInternational Journal of Environmental Research and Public Health·DateNov 30, 2020

How does the spider spin its self-assembled silk?

Scientists at Kyoto University have discovered a new method for producing artificial spider silk by combining acidification and liquid-liquid phase separation. This breakthrough could lead to the development of sustainable, high-strength fibers with potential applications in manufacturing.

SourceKyoto University·JournalScience Advances·DateNov 30, 2020

Raman holography

Researchers have developed a new method called Raman holography, which uses surface-enhanced Raman scattering to image and analyze single particles in three dimensions. This technology has the potential to revolutionize fields such as live cell imaging and anti-counterfeiting.

SourceICFO-The Institute of Photonic Sciences·JournalNature Nanotechnology·DateNov 30, 2020

How we learn words and sentences at the same time

Adults can acquire a complex language through cross-situational statistical learning, solving the chicken-and-egg problem of word meaning and sentence structure. By keeping track of associations between words and scenes across hundreds of trials, learners can figure out word meanings and roles in sentences.

SourceLancaster University·JournalCognition·DateNov 30, 2020

Researchers explore population size, density in rise of centralized power in antiquity

A University of Maine-led team developed a model, Power Theory, which suggests that demography played a crucial role in the transition from egalitarian hunter-gatherer societies to centralized authority. The researchers found a correlation between population density and size, and the change in power dynamics in early Peruvian societies.

SourceUniversity of Maine·JournalPhilosophical Transactions of the Royal Society of London (B )·DateNov 30, 2020

Bacteria in iron-deficient environments process carbon sources selectively

Researchers at Northwestern University found that bacteria in low-iron environments reroute their metabolic pathways to favor producing iron-scavenging compounds. This study provides insights into the impact of iron on carbon cycling in bacterial cells, with implications for ecosystem health and environmental biotechnology.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateNov 30, 2020

Transportation of water into the deep Earth by Al-phase D

Al-phase D mineral discovered to transport and host water up to 1200 km in lower mantle, improving stability against pressure and temperature. Researchers measured sound velocities and density of Al-phase D using synchrotron X-ray techniques, providing clear understanding of seismic velocities of hydrous rocks.

SourceEhime University·JournalGeophysical Research Letters·DateNov 30, 2020

A shapeshifting material based on inorganic matter

Researchers at RIKEN develop a material that can change from soft to hard and back again in response to temperature changes, mimicking the properties of sea cucumbers. The material's structure is manipulated using electrostatic repulsion and gold nanoparticles, enabling rapid and reversible shape shifts.

SourceRIKEN·JournalNature Communications·DateNov 30, 2020

Lower current leads to highly efficient memory

Researchers have developed a gallium arsenide-based ferromagnetic semiconductor that can act as memory by quickly switching its magnetic state in the presence of an induced current. The new material suppresses instability and lowers power consumption, offering highly efficient memory.

SourceUniversity of Tokyo·JournalNature Electronics·DateNov 30, 2020

New cyberattack can trick scientists into making toxins or viruses -- Ben-Gurion University researchers

Researchers at Ben-Gurion University have discovered a new end-to-end cyber-biological attack that can trick scientists into generating dangerous toxins in their labs. The attack uses malware to interfere with biological processes within the victim's lab, exploiting weaknesses in biosecurity screening protocols and cybersecurity controls.

Fingerprints' moisture-regulating mechanism strengthens human touch - study

Human fingerprints have a self-regulating moisture mechanism that helps avoid dropping objects, enabling the development of better prosthetic limbs and virtual reality environments. By regulating skin moisture, fingerprints maximize friction on various surfaces, giving primates an evolutionary advantage in dry and wet conditions.

SourceUniversity of Birmingham·JournalProceedings of the National Academy of Sciences·DateNov 30, 2020

Air pollution spikes linked to lower test scores for Salt Lake County third graders

A new study found that frequent peak air pollution exposure was associated with reduced math and English language arts test scores for third graders in Salt Lake County. Chronic exposure also had an impact on test scores, but the effect disappeared when controlling for social disadvantage factors.

SourceUniversity of Utah·JournalInternational Journal of Environmental Research and Public Health·DateNov 30, 2020

Killer electrons in strumming sky lights

A team of researchers led by Nagoya University has discovered that killer electrons, resulting from the pulsating aurora, could be involved in ozone destruction. The high-energy electrons are believed to cause damage when they penetrate satellites, and their presence in the middle atmosphere is associated with the pulsating aurora.

SourceNagoya University·JournalGeophysical Research Letters·DateNov 30, 2020

When businesses behave badly

A study found that firms tend to follow the pecking order theory, drawing down internal funds before relying on debt financing after negative E&S incidents. Firms with high CSR reputation are better able to cushion the impacts of such incidents. Financially constrained firms react differently due to limited access to equity markets.

How SARS-CoV-2 reaches the brain

A team of researchers from Charité - Universitätsmedizin Berlin have studied how SARS-CoV-2 reaches the brain and found that it enters through nerve cells in the olfactory mucosa. The virus is also transported via blood vessels to reach the brain, which may contribute to neurological symptoms such as loss of smell or taste in COVID-19 ...

SourceCharité - Universitätsmedizin Berlin·JournalNature Neuroscience·DateNov 30, 2020