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Science News for May 23, 2025


Study reveals different phases of evolution during ice age

A recent study has discovered that cold-adapted species began evolving 2.6 million years ago, with many modern species emerging around 700,000 years ago. The research provides insights into the evolution of Arctic ecosystems and highlights the importance of understanding past adaptations to inform conservation efforts.

SourceBournemouth University·JournalTrends in Ecology & Evolution·TypeData/statistical analysis·DateMay 23, 2025

Daytime boosts immunity, scientists find

A breakthrough study has uncovered how daylight can boost the immune system's ability to fight infections by synchronizing neutrophil circadian clocks. The research found that light regulates the timing of neutrophil activation, leading to increased bactericidal activity and improved daytime immunity.

SourceUniversity of Auckland·JournalScience Immunology·TypeExperimental study·DateMay 23, 2025

Unmasking human trafficking: New AI research reveals hidden recruitment networks

A groundbreaking study using machine learning analyzes millions of online ads to uncover patterns linking deceptive job offers to sex trafficking networks. The research reveals a hidden supply chain that can now be exposed and interrupted earlier in the trafficking process.

SourceInstitute for Operations Research and the Management Sciences·JournalManufacturing & Service Operations Management·TypeObservational study·DateMay 23, 2025

A smart chemistry twist: self-pausing Fenton system enhances water treatment safety

A new Fenton system introduces a pH-responsive mechanism that produces hydroxyl radicals only within a specific pH range, preventing side reactions and improving treatment efficiency. The system's automatic shutdown in acidic conditions minimizes chemical overuse and reduces reliance on energy-intensive methods.

SourceChinese Society for Environmental Sciences·JournalEnvironmental Science and Ecotechnology·DateMay 23, 2025

Millions of HealthCare.gov participants face coverage loss due to burdensome reenrollment policies, according to new research

A recent study on HealthCare.gov found that burdensome reenrollment policies led to a significant decrease in enrollment and an estimated quarter of a million Americans lost their Marketplace health insurance coverage in 2024. The researchers argue that increasing administrative burdens will lead to more coverage losses.

SourceUniversity of Pittsburgh·JournalJAMA Health Forum·TypeData/statistical analysis·DateMay 23, 2025

Conservation sweet spots: research reveals where protecting nature helps both birds and humans in the United States

A new study finds that 75% of forest-dwelling birds are well-represented by ecosystem service priority areas, including the Appalachian Mountains and Sierra mountain ranges. The research highlights areas where protecting nature can have co-benefits for biodiversity, climate, and human health.

SourceCornell University·JournalEcosystem Services·TypeData/statistical analysis·DateMay 23, 2025

New verification framework uncovers safety lapses in self-driving system autoware

Researchers used a new verification framework to test the safety of Autoware, revealing potential limitations in critical traffic situations. The study found that Autoware failed to consistently follow safety rules during scenarios like cut-in, cut-out, and deceleration, highlighting the need for improvement before real-world deployments.

SourceJapan Advanced Institute of Science and Technology·JournalIEEE Transactions on Reliability·DateMay 23, 2025

Hybrid strategy in compact tailoring of multiple degrees-of-freedom toward high-dimensional photonics

Researchers have demonstrated an intelligent hybrid strategy for simultaneous multi-degree-of-freedom tailoring, enabling the generation of high-dimensional laser fields. This advancement represents a significant step forward in high-dimensional photonics, offering advantages in scalability and simplicity.

Muscle quality may hold clues to early cognitive decline

A recent study published in the Journal of Cachexia, Sarcopenia and Muscle found that phase angle, a measure of muscle quality, is linked to memory performance and dementia risk in middle-aged and older adults. Higher phase angle was associated with lower risk of mild cognitive impairment and better memory in both men and women.

SourceDoshisha University·JournalJournal of Cachexia Sarcopenia and Muscle·TypeExperimental study·DateMay 23, 2025

Kyoto conundrum: More hotels than households exist in ancient capital

A study by Osaka Metropolitan University reveals six neighborhood-units in Kyoto's southeastern area have a disrupted balance between residences and accommodations, with hotspot locations near transportation hubs. Effective zoning policies are recommended to address overtourism's adverse social effects.

SourceOsaka Metropolitan University·JournalAnnals of Tourism Research Empirical Insights·TypeData/statistical analysis·DateMay 23, 2025

Research spotlight: Study provides a window into public perceptions about technological treatment options for brain conditions

A survey of over 1,000 US adults examined perceptions of four neurotechnologies: deep brain stimulation, MRI-guided focused ultrasound, transcranial magnetic stimulation, and pills. Pills were rated as the most beneficial, acceptable, and likely to be used, while DBS was seen as the second most beneficial but also the riskiest.

SourceMass General Brigham·JournalDevice·TypeData/statistical analysis·DateMay 23, 2025

Modulation of antiviral response in fungi via RNA editing

A study by University of Fukui researchers reveals that two adjacent gene pairs in Neurospora crassa regulate antiviral response and symptom induction via RNA editing. The findings indicate that the modification of master transcription factor genes is crucial for controlling fungal antiviral responses.

SourceUniversity of Fukui·JournalCell Host & Microbe·TypeExperimental study·DateMay 23, 2025

The Roman massacre that never happened according to a new study of an iconic archaeological site

A new study by Bournemouth University reveals that the 'war-cemetery' at Maiden Castle did not die in a single event, but rather experienced lethal violence spanning multiple generations. The findings question the traditional narrative of Roman conquest and highlight the need for reevaluation of other archaeological cemeteries.

SourceBournemouth University·JournalOxford Journal of Archaeology·TypeImaging analysis·DateMay 23, 2025

Hey vespids, what's for dinner? DNA analysis of wasp larvae’s diverse diet

A study by Kobe University found that Japanese wasp larvae feed on a diverse range of species, including birds, mammals, reptiles, amphibians, fish, and insects. The research used DNA metabarcoding to identify the gut contents of larvae from wild and reared nests, revealing significant differences in prey composition between the two.

SourceKobe University·JournalJournal of Insects as Food and Feed·TypeExperimental study·DateMay 23, 2025

CU Anschutz develops first validated tool to measure performance in bone-anchored prosthesis users after amputation

The COLD-TUG test measures the time required for prosthetic donning and mobility in lower-limb amputation patients. Researchers found that patients with bone-anchored prostheses can don their prosthesis significantly faster, saving up to 61 seconds per session.

SourceUniversity of Colorado Anschutz Medical Campus·JournalJournal of Bone and Joint Surgery·TypeObservational study·DateMay 23, 2025

More young adults than ever take HIV-prevention medication, but gaps remain

A new study found that eight times more American young adults now take HIV-prevention medication than a decade ago, but inconsistent use and barriers persist. PrEP can reduce the chances of acquiring HIV by 99%, emphasizing the need for healthcare providers and public health agencies to promote consistent use among high-risk patients.

SourceMichigan Medicine - University of Michigan·JournalJournal of General Internal Medicine·TypeData/statistical analysis·DateMay 23, 2025

Bimodal video imaging platform predicts hyperspectral frames from RGB video

Researchers developed a bimodal video platform combining hyperspectral and RGB video to predict high-quality spectra from lower-cost RGB data. The platform demonstrates improved performance in the visible spectrum but faces challenges in the near-infrared range, highlighting the need for broader spectral coverage.

SourceSPIE--International Society for Optics and Photonics·JournalJournal of Applied Remote Sensing·DateMay 23, 2025

First vascularized model of stem cell islet cells

Scientists have created a vascularized organoid model of hormone-secreting cells in the pancreas, promising to improve diabetes research and cell-based therapies. The model, developed by Max Delbrück Center researchers, contains greater numbers of mature beta cells and secretes more insulin than non-vascularized counterparts.

SourceMax Delbrück Center for Molecular Medicine in the Helmholtz Association·JournalDevelopmental Cell·TypeExperimental study·DateMay 23, 2025

A dental floss that can measure stress

Researchers at Tufts University have created a saliva-sensing dental floss that can accurately measure cortisol, a key indicator of stress. The device uses molecularly imprinted polymers and is comparable in accuracy to existing sensors, making it a promising tool for tracking stress and related conditions.

SourceTufts University·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateMay 23, 2025

Recent advances in intelligent sports based on triboelectric nanogenerators

Recent advances in triboelectric nanogenerators (TENGs) have led to the development of intelligent sports facilities that monitor athlete status and improve training efficiency. TENG-based wearable devices also demonstrate high stability and adaptability in gait monitoring, enabling the creation of real-time digital human replicas.

SourceKeAi Communications Co., Ltd.·JournalIntelligent Sports and Health·TypeLiterature review·DateMay 23, 2025

US excess deaths continued to rise even after the COVID-19 pandemic

A new study led by Boston University School of Public Health reveals that US excess deaths have been increasing for decades, with working-age adults disproportionately affected. The study found that over 1.5 million 'missing Americans' would have been averted if the US had mortality rates similar to other high-income countries.

SourceBoston University School of Public Health·JournalJAMA Health Forum·TypeObservational study·DateMay 23, 2025

Non-reciprocal response in silicon photonic resonators integrated with 2D CuCrP₂S₆ at short-wave infrared

Researchers integrated 2D CuCrP₂S₆ onto silicon microring resonators, achieving a compact and efficient non-reciprocal optical response. The device exhibits low insertion loss, high isolation, and a wide bandwidth, enabling practical applications in next-generation optical isolators and photonic circuits.