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Science News Archive 2025 - Page 197


Page 197 of 574

Lizards of Madagascar

A study found that three lizard species in Madagascar consume fruits from over 20 plant species and expel viable seeds, indicating their potential crucial role as seed dispersers. This discovery is significant as environmental degradation affects large frugivores like lemurs, but lizards can continue to inhabit degraded environments.

SourceKyoto University·JournalBiotropica·TypeObservational study·DateJun 9, 2025

Marginalized groups more often experience serious maternal complications in planned repeat cesareans, UMass Amherst study finds

A new study by UMass Amherst researchers found that Black and Latinx people experiencing planned repeat cesareans are more likely to suffer severe maternal morbidity. The study analyzed data from over 72,000 births between 2012-2021, revealing a significant disparity in complication rates among marginalized groups.

SourceUniversity of Massachusetts Amherst·JournalJAMA Network Open·TypeObservational study·DateJun 9, 2025

Out of the string theory swampland

Researchers propose a new subset of string theories that incorporate dynamic tension could help describe the real universe without violating observational constraints. This approach may alleviate the 'swampland problem,' which has hindered conventional string theory's ability to reproduce inflation and dark energy.

SourceFoundational Questions Institute, FQXi·JournalThe European Physical Journal C·TypeContent analysis·DateJun 9, 2025

SNU researchers develop world's first 3D microphone capable of position estimation with a single sensor

The research team developed a novel auditory technology that allows sound-based interaction between humans and robots, even in noisy environments. The technology facilitates sound-based recognition of human positions using only a single microphone.

SourceSeoul National University College of Engineering·JournalRobotics and Computer-Integrated Manufacturing·TypeExperimental study·DateJun 9, 2025

KAIST introduces ‘Virtual Teaching Assistant’ that can answer even in the middle of the night – successful first deployment in classroom​

The virtual teaching assistant (VTA) provides personalized feedback to individual students even in large-scale classes. The system, which automatically vectorizes a large volume of course materials and uses them as the basis for answering students' questions, has been shown to significantly reduce the burden on TAs.

How can smart agricultural equipment accurately detect pedestrians in complex scenarios?

Researchers have developed a new pedestrian detection algorithm for smart agricultural equipment, improving accuracy in complex environments with low-resolution images and dense targets. The new model, YOLOv8n-SS, achieves a 7.2% increase in mean Average Precision on the CrowdHuman dataset and shows high real-time performance.

SourceHigher Education Press·JournalFrontiers of Agricultural Science and Engineering·TypeExperimental study·DateJun 8, 2025

How does the novel model achieve accurate prediction of soybean futures prices?

A new hybrid deep learning model significantly enhances the prediction accuracy of soybean futures prices by integrating multi-stage data preprocessing and intelligent optimization algorithms. The model addresses limitations of traditional methods in noise handling, parameter tuning, and generalization capabilities.

SourceHigher Education Press·JournalFrontiers of Agricultural Science and Engineering·TypeExperimental study·DateJun 8, 2025

NUS Medicine researchers develop a better and more accurate biological ageing clock

Researchers developed an improved biological ageing clock, LinAge2, that offers doctors a practical way to assess how quickly a person is ageing and what can be done to slow it down. The new algorithm-powered tool outperforms other clinical models in predicting long-term mortality and health outcomes.

SourceNational University of Singapore, Yong Loo Lin School of Medicine·Journalnpj Aging·TypeComputational simulation/modeling·DateJun 8, 2025

Researchers realize direct methane to acetic acid conversion under mild condition

Researchers developed a novel MoS2-confined Rh-Fe dual-site catalyst for the direct conversion of methane to acetic acid, achieving an unprecedented CH3COOH selectivity of 90.3% at room temperature. The catalyst's unique structure effectively balances C-H activation and C-C coupling, addressing long-standing challenges in this process.

SourceDalian Institute of Chemical Physics, Chinese Academy Sciences·JournalJournal of the American Chemical Society·TypeCommentary/editorial·DateJun 8, 2025

ELSI’s challenges in the era of advanced AI

The ELSI University Summit in Japan brought together experts to discuss challenges and prospects of responsible AI development. Key findings include the need for ethics-driven approaches, collaboration between academia and industry, and the importance of setting evaluation indicators for Responsible AI.

Pre-eclampsia leaves a lasting impact by worsening stroke outcomes postpartum in rats

A study reveals that pre-eclampsia increases the risk of developing severe cerebrovascular complications, including stroke, after childbirth. The researchers found that a history of PE impairs collateral recruitment and worsens ischemic stroke outcomes due to increased sensitivity to cerebral ischemia and elevated oxidative stress.

SourceChinese Medical Journals Publishing House Co., Ltd.·JournalNeuroprotection·TypeExperimental study·DateJun 6, 2025

Do we feel less moral responsibility when following orders?

A recent study found that the perception of being responsible for one's actions and their consequences decreases when individuals follow orders, affecting both civilians and military personnel. The study used fMRI scans to analyze brain activity while participants made moral decisions with varying degrees of freedom.

SourceBIAL Foundation·JournalCerebral Cortex·TypeObservational study·DateJun 6, 2025

New research links skin barrier dysfunction to pediatric eosinophilic esophagitis

A groundbreaking study suggests that the skin may serve as a biomarker for pediatric eosinophilic esophagitis (EoE), a chronic allergic disease of the esophagus. The study found significant deficits in ceramides, lipid molecules essential for the skin's protective barrier, in children with EoE but without atopic dermatitis.

SourceNational Jewish Health·JournalJournal of Allergy and Clinical Immunology·DateJun 6, 2025

Chinese Medical Journal article reviews classification, synthesis, and applications of ‘herbzymes’

Researchers review nanozymes derived from Chinese herbs, including their catalytic properties, biomedical applications, and potential challenges in developing herbzymes for practical use. The review highlights three main types of herbzymes: herb carbon dot enzymes, polyphenol-metal nanozymes, and herb extract nanozymes.

SourceChinese Medical Journals Publishing House Co., Ltd.·JournalChinese Medical Journal·TypeLiterature review·DateJun 6, 2025

IEEE study describes polymer waveguides for reliable, high-capacity optical communication

Researchers have developed glass-epoxy-based waveguides with low polarization-dependent loss and differential group delay, suitable for stable signal transmission in co-packaged optics. The waveguides demonstrated high power stability and reliability under six hours of continuous use.

SourceInstitute of Electrical and Electronics Engineers·JournalJournal of Lightwave Technology·TypeExperimental study·DateJun 6, 2025

World's first practical surface-emitting laser for optical fiber communications developed: advancing miniaturization, energy efficiency, and cost reduction of light sources

Researchers developed world's first practical surface-emitting laser using quantum dots, advancing miniaturization and energy efficiency of light sources. The innovation enables high-performance, scalable structures and cost reductions through mass production.

SourceNational Institute of Information and Communications Technology (NICT)·JournalOptics Express·TypeExperimental study·DateJun 6, 2025

Throughput computing enables astronomers to use AI to decode iconic black holes

An international team of astronomers trained a neural network with millions of synthetic simulations and artificial intelligence to tease out new cosmic curiosities about the black hole at the center of our Milky Way. The researchers suspect that the black hole is spinning at nearly top speed, its rotation axis pointing towards the Earth.

SourceMorgridge Institute for Research·JournalAstronomy and Astrophysics·TypeData/statistical analysis·DateJun 6, 2025

Improving T cell responses to vaccines

Scientists have modified mRNA vaccines to include the cytokine IL-12, enhancing T cell responses and improving protection against diseases such as SARS-CoV-2, influenza, melanoma, and listeria infection. The study's findings suggest a promising approach to enhance immune stimulation against cancer and other pathogens.

SourceUniversity of Pennsylvania·JournalScience Immunology·TypeExperimental study·DateJun 6, 2025