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Science News Archive October 2024 - Page 41


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In rats, intrauterine exposure to cannabinoid affected cardiorespiratory function and sleep quality in adulthood

Researchers found that prenatal exposure to synthetic cannabinoid led to cardiovascular problems in female rats and increased respiratory sensitivity to carbon dioxide in male rats. Sleep quality also deteriorated in both sexes, with males experiencing sleep fragmentation due to frequent wakefulness episodes.

Wastewater bacteria can breakdown plastic for food

Researchers discovered that wastewater bacteria can break down plastic into small pieces called nanoplastics and use a specialized enzyme to further degrade it. The bacteria then use the broken-down plastic as a food source, providing new possibilities for developing bioengineering solutions to clean up difficult-to-remove plastic waste.

SourceNorthwestern University·JournalEnvironmental Science & Technology·TypeExperimental study·DateOct 3, 2024

Smartphone-assisted “scavenger hunt” identifies people at risk for dementia

A study using a smartphone-based wayfinding task identified individuals with increased risk for dementia, based on their movement patterns and spatial memory. The research provides promising insights into the potential of digital technologies for early detection and monitoring of Alzheimer's disease.

SourceDZNE - German Center for Neurodegenerative Diseases·JournalPLOS Digital Health·TypeObservational study·DateOct 3, 2024

Our brains divide the day into chapters. New psychology research offers details on how.

A new study published in Current Biology found that our brains organize experiences into individual events based on what we currently care about and are paying attention to. The researchers used audio narratives to test this hypothesis, finding that people's brain activity creates new chapters depending on their perspective.

SourceColumbia University·JournalCurrent Biology·TypeExperimental study·DateOct 3, 2024

Environmental quality of life benefits women worldwide

A global study reveals that women's environmental quality of life explains a substantial 46% of their overall health and well-being. The study found that younger women report poorer environmental quality of life, while older women experience improved quality of life after age 45.

SourcePLOS·JournalPLOS ONE·TypeSurvey·DateOct 2, 2024

Early academic success does not lead to increased STEM college enrollment for Black and Latine students

A recent study published in American Journal of Education found that White English-speaking students are the only group with a positive relationship between early STEM aptitude and majoring in a STEM subject in college. For Black and Latine students, early STEM aptitude does not translate into STEM enrollment.

SourceNew York University·JournalAmerican Journal of Education·TypeData/statistical analysis·DateOct 2, 2024

Study reveals limits of using land surface temperature to explain heat hazards in Miami-Dade County

A recent study published in PLOS Climate examines the effectiveness of using land surface temperatures as proxies for surface air temperatures in subtropical regions. The findings reveal seasonal variations in the relationship between LST and SAT, underscoring the complexity of using LST data in subtropical, wet regions.

How a bacterium becomes a permanent resident in a fungus

A team of researchers led by Julia Vorholt at ETH Zurich initiated laboratory partnerships between bacteria and fungi to study the beginnings of an endosymbiotic relationship. They found that when certain bacteria are passed on to the next generation of fungi through spores, the fungus adapts and becomes more inhabited.

SourceETH Zurich·JournalNature·DateOct 2, 2024

How estrogen’s millisecond-fast action happens

Researchers at Baylor College of Medicine discovered estrogen's fast actions are mediated by the coupling of ER-alpha with ion channel protein Clic1, controlling chloride ion flux and enabling rapid neuronal responses. This finding sheds light on estrogen's role in regulating various physiological processes.

SourceBaylor College of Medicine·JournalScience Advances·TypeExperimental study·DateOct 2, 2024

Carnegie Mellon to lead development of implantable cell-based bioelectronic devices for patient-specific treatment and disease monitoring

A Carnegie Mellon-led team has secured a $42 million grant to develop implantable, cell-based bioelectronic devices for real-time therapy and disease monitoring in patients with thyroid disorders. The devices will offer adjustable, low-cost treatment and continuous biomarker measurement.

First map of every neuron in an adult brain

Researchers from the FlyWire Consortium have created a detailed wiring diagram of every neuron in the adult fly brain, revealing substantial similarities between individual brains. The map includes 50 million connections between neurons, providing insights into neural circuits and their functions.

SourceUK Research and Innovation·JournalNature·TypeImaging analysis·DateOct 2, 2024

Unpacking polar sea ice

New research from University of Utah mathematicians and climate scientists sheds light on the dynamic processes driving global climate change. The studies reveal that sea ice is not a solid layer but a complex mixture of water, air, and brine, which affects heat transfer and polar ecosystems.

SourceUniversity of Utah·JournalScientific Reports·TypeComputational simulation/modeling·DateOct 2, 2024

Bottlenose dolphins “smile” at each other while playing

Researchers discovered that bottlenose dolphins use the open mouth facial expression to signal playfulness and that they mirror each other's expressions 33% of the time. This finding suggests that visual communication plays a crucial role in shaping complex social interactions in marine mammals.

SourceCell Press·JournaliScience·TypeExperimental study·DateOct 2, 2024

Public perceptions of immigration growth rates vary by how they are presented, with "1 in 40" seeming like a bigger number than "2.5%", necessitating care in presentation of such information

Researchers found that people perceive immigration growth rates as larger when presented in a non-numerical format, such as '1 in 40', compared to numerical formats like '2.5%'. This highlights the importance of clear and accurate communication when discussing sensitive topics.

SourcePLOS·JournalPLOS ONE·DateOct 2, 2024

The Lancet Public Health: Accelerating actions to eliminate tobacco smoking could help increase life expectancy and prevent millions of premature deaths by 2050, modelling study suggests

A modelling study suggests that reducing tobacco smoking globally to 5% by 2050 could increase life expectancy and prevent millions of premature deaths. Accelerating actions to eliminate tobacco smoking could result in up to 1.5 additional years of life expectancy among males and 0.4 years among females.

SourceThe Lancet·JournalThe Lancet Public Health·TypeComputational simulation/modeling·DateOct 2, 2024

Global study highlights the life-saving impact of Guideline-Directed Medical Therapy (GDMT) in heart failure patients

A global study highlights the life-saving impact of Guideline-Directed Medical Therapy (GDMT) in heart failure patients, particularly those with reduced ejection fraction (HFrEF). The study estimates that optimal implementation could save over 1 million lives per year, with significant regional disparities to address.

SourceUniversity of California - Los Angeles Health Sciences·JournalJAMA Cardiology·TypeData/statistical analysis·DateOct 2, 2024

Mystery of Uruguay’s amethyst geodes

Researchers from Göttingen University identified the low crystallisation temperatures and groundwater origin of amethyst geodes in northern Uruguay. The study proposes a new model explaining their formation, which could improve exploration techniques and lead to sustainable mining strategies.

SourceUniversity of Göttingen·JournalMineralium Deposita·TypeObservational study·DateOct 2, 2024

A breakthrough in chiral capsule tools for advanced optical technologies

Researchers at Institute of Science Tokyo create terpene-based chiral capsules that facilitate the easy preparation of well-defined host–guest composites with tunable chiroptical properties. The resulting composites can be used in water without organic solvents, paving the way for advances in cutting-edge optical technologies.

SourceInstitute of Science Tokyo·JournalJournal of the American Chemical Society·TypeExperimental study·DateOct 2, 2024

A leap in behavioral modelling: Scientists replicate animal movements with unprecedented accuracy

Researchers create a complex model of nematode worm behavior, accurately mimicking its movements and offering insights into animal behavior. The findings have significant implications for medical research, particularly in the study of movement disorders like Parkinson's disease, and could also improve robotics.

SourceOkinawa Institute of Science and Technology (OIST) Graduate University·JournalProceedings of the National Academy of Sciences·TypeComputational simulation/modeling·DateOct 2, 2024

The rate of climate change threatens to exceed the adaptive capacity of species

A recent study on the Siberian primrose highlights the urgent need to curb climate change to allow species time to adapt through evolution. The research suggests that many wild species have limited capacity to adapt to warming climates, with some facing extinction due to geographic constraints and rapid climate change.

SourceUniversity of Helsinki·JournalProceedings of the Royal Society B Biological Sciences·DateOct 2, 2024

Bright light therapy for non-seasonal depressive disorders

A systematic review and meta-analysis found bright light therapy to be an effective adjunctive treatment for non-seasonal depressive disorders. The study suggests that bright light therapy may improve the response time to the initial treatment, providing new hope for patients with these conditions.

SourceJAMA Network·JournalJAMA Psychiatry·DateOct 2, 2024

Reducing daily sitting may prevent back pain

A six-month study found that reducing daily sitting by 40 min/day can prevent back pain from worsening. The researchers suggest trying to reduce sitting at work or leisure time, but emphasize the importance of physical activity such as walking or brisk exercise.

SourceUniversity of Turku·JournalBMJ Open·TypeRandomized controlled/clinical trial·DateOct 2, 2024

Neuroscience breakthrough: A Princeton-led research team has mapped the entire brain of an adult fruit fly for the first time

A Princeton-led research team has built the first neuron-by-neuron and synapse-by-synapse roadmap through the brain of an adult fruit fly. The map reveals connections within the brain at every scale, enabling researchers to better understand its underlying logic and potentially develop tailored treatments for brain diseases.

SourcePrinceton University·JournalNature·TypeImaging analysis·DateOct 2, 2024

Storms, floods, landslides associated with intimate partner violence against women two years later

A study of 156 countries found that climate-related disasters like landslides and floods are associated with an increase in intimate partner violence against women two years after the event. The effect is similar in magnitude to economic factors, suggesting a potential link between climate change and social drivers of violence.

SourcePLOS·JournalPLOS Climate·TypeObservational study·DateOct 2, 2024