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Science News Archive 2025 - Page 138


Page 138 of 574

New study links popular vape flavorings to increased nicotine reward

A new study found that certain flavorings, including vanilla and cherry, can drive reinforcement-related behaviors similar to those associated with nicotine exposure in adolescents. The study suggests that these flavorings can modulate the brain's dopamine system and increase dependence, especially among youth.

SourceMarshall University Joan C. Edwards School of Medicine·JournalJournal of Pharmacology and Experimental Therapeutics·TypeExperimental study·DateJul 18, 2025

Machine learning reveals historical seismic events in the Yellowstone caldera

A new study published in Science Advances uses machine learning to re-examine historical earthquake data from the Yellowstone caldera over a 15-year period. The team detected and assigned magnitudes to approximately 86,276 earthquakes, significantly improving previous understanding of volcanic and seismic systems.

SourceUniversity of Western Ontario·JournalScience Advances·TypeComputational simulation/modeling·DateJul 18, 2025

Researchers realize in situ formation of functional materials in living systems

Scientists discovered a novel method to synthesize gold-polymer nanocomposites within living E. coli bacteria, creating natural microreactors for complex nanostructure formation. The approach enables spatially controlled and eco-friendly synthesis of functional materials.

SourceShenzhen Institute of Advanced Technology, Chinese Academy of Sciences·JournalAngewandte Chemie International Edition·TypeExperimental study·DateJul 18, 2025

IEEE study achieves efficient integration of quantum dot lasers on silicon chiplets

Researchers have successfully integrated indium arsenide quantum dot lasers monolithically on silicon photonic chiplets, achieving low coupling loss and enabling efficient operation at high temperatures. The novel integration technique has the potential to be widely adopted due to its scalability and cost-effectiveness.

SourceInstitute of Electrical and Electronics Engineers·JournalJournal of Lightwave Technology·TypeExperimental study·DateJul 18, 2025

Three star clusters – all with the same origin?

Researchers at the University of Bonn have found that three star clusters are part of the same system, with the Orion Nebula being the youngest, Pleiades the middle-aged, and Hyades the oldest. The team used computer simulations to model the life cycle of these star clusters, which showed they follow a similar development path.

SourceUniversity of Bonn·JournalMonthly Notices of the Royal Astronomical Society·TypeComputational simulation/modeling·DateJul 18, 2025

Stevia leaf extract has potential as anticancer treatment, researchers find

Researchers at Hiroshima University have found that fermenting stevia leaf extract with bacteria kills off pancreatic cancer cells without harming healthy kidney cells. The study identified chlorogenic acid methyl ester as the active anti-cancer compound, which exhibits stronger toxicity to cancer cells than chlorogenic acid alone.

SourceHiroshima University·JournalInternational Journal of Molecular Sciences·DateJul 18, 2025

Trends in physician exit from fee-for-service Medicare

Physician exit from traditional Medicare has increased over time, with exits remaining high even after the pandemic. The findings suggest that multiple factors contribute to physician departures, including the growing burden of new communication methods and demands for clinical documentation.

SourceJAMA Network·JournalJAMA Health Forum·DateJul 18, 2025

UNM study sheds light on major earthquake risk off coast of British Columbia

A new UNM-led study provides conclusive evidence of the Queen Charlotte fault system's seismic hazard, confirming its potential to produce catastrophic events. The research used advanced geophysical tools to map the deep structure of the ocean floor, revealing a fault zone with the potential to generate powerful earthquakes and tsunamis.

SourceUniversity of New Mexico·JournalScience Advances·TypeObservational study·DateJul 18, 2025

Public perception of physicians who use AI

A study on public perception of physicians who use AI found that while effects are relatively small, they may be highly relevant due to the close link between trust in healthcare practitioners and subjective treatment outcomes. The integration of AI in healthcare has sparked certain reservations among the public.

SourceJAMA Network·JournalJAMA Network Open·DateJul 17, 2025

Neanderthals at two nearby caves butchered the same prey in different ways, suggesting local food traditions

Two Neanderthal groups living in Amud and Kebara caves in northern Israel butchered the same prey using similar tools but with distinct patterns of cut-marks on animal bones. These differences could represent cultural food practices such as drying or aging meat before butchering, which were passed down through generations.

SourceThe Hebrew University of Jerusalem·JournalFrontiers in Environmental Archaeology·TypeExperimental study·DateJul 17, 2025

Historical and current population DNA reveals that there are at least 12 species of rocket frogs, three of which are already extinct

Researchers have identified a new genus of frog, Dryadobates, comprising at least 12 species, with three already declared extinct. The study utilized historical DNA analysis to clarify the taxonomic classification of previously single-species frogs, revealing hidden diversity and extinctions in the Atlantic Forest.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalBulletin of the American Museum of Natural History·DateJul 17, 2025

Animal behavior: Dog TV viewing habits vary by personality

Research found that dog TV viewing habits differ by personality, with excitable dogs more likely to follow on-screen objects and fearful dogs reacting to car horns or doorbells. The study, published in Scientific Reports, suggests that engaging with TV could provide dogs with an enriching experience.

SourceScientific Reports·JournalScientific Reports·TypeObservational study·DateJul 17, 2025

Cannabis use and benign salivary gland neoplasms

A recent study published in JAMA Otolaryngology–Head & Neck Surgery found an association between cannabis use disorder and benign salivary gland tumors. The researchers call for further prospective research to confirm this association and understand the relationship between cannabis use and these tumors.

SourceJAMA Network·JournalJAMA Otolaryngology–Head & Neck Surgery·DateJul 17, 2025

An FDA-backed metric used to determine effectiveness of rectal cancer drugs may be unreliable, says new study

A new study published in JAMA Network Open found no statistical relationship between pathologic complete response (pCR) and overall survival in rectal cancer patients. This challenges the FDA's use of pCR as a surrogate endpoint for drug approval, which may lead to treatments being fast-tracked without evidence of improved long-term su...

SourceTulane University·JournalJAMA Network Open·DateJul 17, 2025

Key factors in sunscreen testing for personalized UV protection

A retrospective analysis of 1036 participants found that lighter skin showed lower unprotected MED values, while winter conditions correlated with greater UV tolerance. The study advocates for lab-specific prediction models to enhance testing precision and optimize UV protection for diverse populations.

SourceKeAi Communications Co., Ltd.·JournalJournal of Dermatologic Science and Cosmetic Technology·TypeObservational study·DateJul 17, 2025