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Science News for September 18, 2020


Ancient human footprints in Saudi Arabia give glimpse of Arabian ecology 120000 years ago

Researchers have discovered securely dated human footprints in Saudi Arabia, dating back 120,000 years, which provide valuable insights into the Arabian Peninsula's role in human prehistory. The findings suggest that humans and large mammals used the region's landscape in response to dry conditions and diminishing water supplies.

SourceMax Planck Institute of Geoanthropology·JournalScience Advances·DateSep 18, 2020

Mental health in times of the pandemic

Experts will discuss the challenges of mental health in times of pandemic, including social isolation and uncertainty. The virtual panel discussion aims to provide insights into the effects of protective policy measures on human mental health.

Who stole the light?

A team of researchers has precisely recorded the dependence of resonant magnetic scattering intensity on x-ray intensity using a ferromagnetic domain sample. They found that the loss in scattered x-ray intensity is due to transient demagnetization, not stimulated emission. This clarification has important ramifications for future singl...

SourceForschungsverbund Berlin·JournalPhysical Review Letters·DateSep 18, 2020

Confidence in the authorities' handling of COVID-19 provides good mental health

Researchers at UiT The Arctic University of Norway found that people who were satisfied with their country's response to COVID-19 had better well-being and lower perceived risk of getting the virus. Dissatisfaction led to increased stress levels and fear, while trust in society and government was linked to improved mental health.

SourceUiT The Arctic University of Norway·JournalRoyal Society Open Science·DateSep 18, 2020

A better informed society can prevent lead poisoning disasters

Researchers suggest using scientific data and predictive frameworks to identify risks of lead release, improving testing strategies and anticipating problems. Citizen scientists can aid in data gathering with mobile test kits, while AI and machine learning help identify relationships between water conditions and lead levels.

SourceUniversity of Virginia School of Engineering and Applied Science·JournalProceedings of the National Academy of Sciences·DateSep 18, 2020

Raids and bloody rituals among ancient steppe nomads

A new study uncovers patterns of perimortem trauma in a Southern Siberian nomadic community from the 2nd-4th centuries CE, suggesting violence beyond warfare, including ritualistic practices. The research found that 25% of individuals died from interpersonal violence, with evidence of throat-slitting and scalping on some skeletal remains.

SourceUniversity of Bern·JournalAmerican Journal of Physical Anthropology·DateSep 18, 2020

Shape matters for light-activated nanocatalysts

A study by Rice University's Laboratory for Nanophotonics found that aluminum nanocatalysts with sharply pointed corners, dubbed 'octopods,' have a higher reaction rate and lower activation energy than similar shapes. The research builds on previous efforts to develop commercially viable light-activated nanocatalysts.

SourceRice University·JournalACS Nano·DateSep 18, 2020

CU researchers call for national ethics guidelines when student health surveys uncover suicide-risk

A new report highlights the need for ethical guidance in responding to high local rates of suicide risk discovered through anonymous student health surveys. CU researchers urge national public health and education associations to produce clear guidelines for surveyors, emphasizing the importance of timely intervention and support.

SourceUniversity of Colorado Anschutz Medical Campus·JournalThe American Journal of Bioethics·DateSep 18, 2020

How researchers look at the bird brain in action

Researchers have developed an experimental setup allowing them to conduct fMRI studies on awake pigeons, investigating cognitive processes for the first time. The results show that even simple tasks elicit widespread brain activity, paving the way for more complex investigations into avian intelligence.

SourceRuhr-University Bochum·JournalNature Communications·DateSep 18, 2020

Mosquito-borne viruses linked to stroke

Researchers have discovered that a deadly combination of two mosquito-borne viruses may trigger stroke in adults. A new study published in The Lancet Neurology found that patients infected with both Zika and chikungunya were more likely to experience stroke, which could be caused by either virus alone.

SourceUniversity of Liverpool·JournalThe Lancet Neurology·DateSep 18, 2020