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Pandemic-era gaps in dental care reveal lasting risks and a clear path forward

The COVID-19 pandemic disrupted routine health care in unprecedented ways, forcing providers and patients alike to delay or forgo preventive services. At the University of Colorado Anschutz School of Dental Medicine, those disruptions allowed a team of oral health and informatics researchers to better understand what happens when routine periodontal maintenance is paused, and what those findings mean moving forward.

Phys.org

Physicists identify upper limit to resistivity in a pure metal

Experimental atomic physicists have discovered there is a maximum amount of electrical resistance, or resistivity, that can result from collisions between electrons.

Medical Xpress

The US infant mortality rate fell to an all-time low, though it still trails other similar nations

Infant mortality in the U.S. dropped to a new all-time low in 2025, according to preliminary government data.

Medical Xpress

Large-scale genetic study uncovers new factors associated with a pregnancy-related liver disease

Intrahepatic cholestasis of pregnancy (ICP) affects approximately 0.2–2% of pregnant women and typically develops after 30 weeks of gestation. As the most common symptom is severe itching of the palms and the soles of the feet, the condition can often be identified during routine prenatal care. The diagnosis is confirmed by elevated liver enzyme levels and increased concentrations of bile acids in the blood. Although the condition usually resolves after delivery, it is associated with an increased risk of complications, including preterm birth and stillbirth.

Phys.org

Intermolecular collisions may explain why organic radical fluids become unusually magnetic

Certain substances can become magnetic when exposed to an external magnetic field. Magnetic susceptibility measures how easily a material can be magnetized. Materials known as organic radicals have been noted to possess anomalously large magnetic susceptibility. However, researchers have been unable to explain this phenomenon using conventional theories.

Phys.org

Q&A: Engineering crop resilience to heat and drought may help reverse climate change

Heat waves are arriving sooner and becoming hotter, with the United Kingdom recording May 25 as its hottest day in May since tracking began more than a century ago, only for the record to be broken again the next day. While humans can turn to artificial means of cooling, such as air conditioning or swimming pools, plants are left to cope with heat and frequently co-occurring droughts on their own. Sarah M. Assmann, Waller Professor of Biology at Penn State, is working to better understand how plants respond to environmental signals—and is applying that understanding to develop crops more resilient to environmental stress.

Phys.org

Dan David Prize awards 9 scholars $300,000 each for research on the human past

The Dan David Prize will award nine historians and archaeologists with $300,000 to recognize their work and support future research, the foundation announced Tuesday.

Phys.org

Data suggest 'red flag' laws are linked to sustained reductions in arrests

Individuals subject to extreme risk protection orders (ERPOs), or "red flag" laws, were significantly less likely to be arrested—including for violent and firearm-related offenses—while the orders were in effect than in the six months before. Strikingly, the drop in arrests did not end when the orders expired and continued for months afterward, according to a new study published in PNAS Nexus.

Phys.org

Observation of living cells solves mystery of bacterial cell division

Using an innovative combination of biochemical experiments and ultra-high-resolution microscopy, a research team at Kiel University has solved the long-standing mystery of how the bacterium B. subtilis regulates its cell division.

Medical Xpress

Tirzepatide outperformed semaglutide weight-loss drug results in real world patients, study shows

Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have become popular for weight loss, but results vary from person to person and from drug to drug. Venky Soundararajan and colleagues explored the full range of responses to tirzepatide (e.g., Mounjaro or Zepbound) and semaglutide (e.g., Ozempic, Wegovy or Rybelsus) by analyzing de-identified electronic health records for matched cohorts of 10,339 tirzepatide-treated and 10,339 semaglutide-treated patients. In the real world, outcomes ranged from minimal weight loss to more than a 25% reduction in body weight.

Phys.org

Millions of people can't access civil justice. New report shows why four decades of reform have failed

Every year, more people in England and Wales are involved in disputes before the civil courts than in the criminal courts. More than 1 million claims a year—for personal injury, debt, housing disrepair, faulty consumer goods or breach of contract, for example—are dealt with in the county court.

Medical Xpress

Kidney healing improves after protein blockade, with less scarring and faster recovery

A drug previously developed at UCLA to help heart tissue repair itself after a heart attack might also help kidney tissue repair and regenerate, researchers have found.

Phys.org

Genome-wide analysis uncovers clues to Faroese ancestral history

Genome sequencing has revealed insights into how current-day residents of the Faroe Islands can trace their ancestry to a North Atlantic founder population and how evolutionary forces have shaped their genomes since. The research, published in eLife, uses whole-genome sequencing data from 40 Faroese individuals and is described by eLife's editors as a useful study with convincing analyses of demographic history and selection, generating results that add value beyond the region.

Medical Xpress

Medicare residency expansion misses rural and primary care targets, analysis finds

A new JAMA study finds that federal efforts to expand the physician workforce fall short for primary care and rural communities, despite clear policy goals. The findings raise pressing questions about whether current implementation strategies can effectively address longstanding physician shortages across the U.S.

Phys.org

Rare B meson decays tighten search for hidden particles and dark matter links

A University of Melbourne researcher has placed the strongest constraints yet on certain rare decays of subatomic particles, narrowing the window for where new "hidden" particles could be lurking.

Phys.org

Future Martian colonists will need a new relativistic clock

We think of atomic clocks as the definitive timekeepers. They are famous for being accurate down to the picosecond. Unfortunately, they are still subject to general relativity, so if you put them on a different planet, they will track time slightly faster or slower than on Earth, depending on the planet's gravity. In Mars' case, an atomic clock on its surface is sitting in a slightly shallower gravity well, meaning that time moves slightly faster there. Therefore, as we begin to expand our technological footprint on the red planet, we will need a way to standardize how time is measured there. Dr. Slava Turyshev, a researcher at NASA's Jet Propulsion Laboratory, proposes just such a framework in a new paper available on the arXiv preprint server.

Phys.org

LiON: A fluorescent molecule tracks iron and oxygen levels in individual cells

A new fluorescent reporter capable of visualizing biologically active iron and oxygen inside living cells at single-cell resolution has been developed, as reported by researchers from Science Tokyo. Using this new tool, they revealed striking differences in the distribution of iron and oxygen across organs and even between neighboring cells of the same type. This innovation could serve as a platform for studying cancer, liver diseases, neurodegeneration and aging.

Phys.org

Global surveys find carbon uptake in tropics overestimated

An international team of researchers has found plants in the tropics absorb much less carbon dioxide than previous modeling had suggested, which has implications for ecosystem management.

Medical Xpress

Hidden PIM1 pathway helps prostate cancer survive treatment, pointing to new drug strategy

Cancer cells are remarkably good at adapting to stress. When treatments damage them, they often find new ways to survive, fueling drug resistance and disease progression.

Phys.org

Eco‑literate children can be stewards of nature. Here's how to boost environmental education

Most of my ecology and evolution undergraduates have never held a pair of binoculars or looked at a bug through a magnifying glass. They don't know how to use a key to identify a plant or insect, let alone why they should bother. They struggle to name common garden birds. They expect to learn about biodiversity from behind the safety of a computer screen. Fieldwork is considered a luxury or an inconvenience, depending on your tolerance for rain.

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