Pigeons May Navigate by Iron-Rich Immune Cells: A new Science study proposes a surprising mechanism for animal magnetoreception: iron-rich immune cells in homing pigeons’ livers may help them sense Earth’s magnetic field. Researchers found that pigeon liver macrophages, not cells in the spleen, beak, or brain, carried strong ferritin-based magnetic signals and sat close to neurons connected to the nervous system. To test their role, scientists depleted the macrophages with clodronate liposomes, then released trained pigeons on a cloudy day when they could not use the Sun for orientation. All treated birds became lost, while sham-injected birds flew home. Treated pigeons navigated normally in sunlight, suggesting the effect was specific to magnetic sensing. Researchers say the finding is intriguing but still needs confirmation. (Science)

Uganda Closes DR Congo Border as Ebola Cases Rise: Uganda temporarily closed its border with the Democratic Republic of the Congo as a growing Ebola outbreak continues to strain response efforts in the region. The outbreak is centered in DRC’s Ituri province, near Uganda and South Sudan, and involves the Bundibugyo Ebola species, which has no approved vaccine or treatment. Uganda has reported eight confirmed cases and one death, while DRC has logged 1,077 suspected cases, including 129 confirmed, and 246 suspected deaths. Authorized crossings will continue for outbreak response, humanitarian work, food and cargo transport, and security, but entrants face strict screening. WHO officials urged a temporary ceasefire in conflict-hit Ituri so responders can reach affected communities. (CIDRAP)

Drug-Resistance Gene Surges in U.S. Hospital Bacteria: U.S. surveillance data show a sharp rise in a dangerous antibiotic-resistance gene among carbapenem-resistant Enterobacterales, a group of hospital-associated superbugs that includes resistant E. coli, Klebsiella pneumoniae, and Enterobacter. CDC researchers analyzed isolates from 10 surveillance sites between 2016 and 2023 and found that blaNDM, once rare in the United States, rose from 5.4% of carbapenemase-producing CRE isolates in 2016 to 39.8% in 2023. The increase was especially striking in E. coli, where blaNDM accounted for 73% of carbapenemase-producing isolates in 2023. Researchers warned that NDM-producing CRE are resistant to some newer antibiotics, further narrowing treatment options, and urged clinical laboratories to expand mechanism testing. (CIDRAP)

Mitochondria Take Center Stage in Aging Research: A new npj Aging review argues that mitochondria are not just downstream casualties of aging but upstream drivers of stem-cell exhaustion, chronic inflammation, and tissue decline. The authors connect mitochondrial DNA mutations, weakening quality-control systems, reactive oxygen species, and inflammatory mtDAMP signaling to major hallmarks of aging. They also frame NAD+ depletion as a bridge between metabolism and repair failure. What makes the review useful is its translational sweep: it weighs NAD+ repletion, mitophagy enhancement, mitochondrial transplantation or engineering, and precision removal of mutant mitochondrial DNA using tools such as mitoTALENs and mitoZFNs. The caution is important, too. Mitochondrial interventions may depend heavily on cell type, disease stage, and aging context. (Nature)

Cardiovascular Health Still Matters at 100: A new npj Aging study pushes back against the idea that lifestyle and cardiovascular risk factors stop mattering in extreme old age. Drawing on more than 31,000 people from the China Kadoorie Biobank Hainan cohort and the China Hainan Centenarian Cohort, researchers found that higher “Life’s Essential 8” cardiovascular-health scores were linked to lower mortality across the adult lifespan. The effect remained visible even among centenarians, where high cardiovascular health was associated with a substantially lower risk of death. Physical activity and body mass appeared especially important in the oldest group. The takeaway is simple but consequential: prevention does not end at middle age, and healthy aging strategies may still matter even after people reach 100. (Nature)

A Blood Marker for Early Memory Decline: A Frontiers in Aging Neuroscience study identifies SVIP, a protein involved in cellular protein-quality control, as a possible blood-based marker for amnestic mild cognitive impairment, a condition often viewed as an early window for Alzheimer’s intervention. In a retrospective STAR cohort analysis of 84 participants, researchers compared cognitively unimpaired people with those diagnosed with amnestic MCI. Plasma SVIP levels were lower in the MCI group, while VCP, a related protein, did not show similar diagnostic strength. SVIP produced an AUC of 0.836, suggesting promising discrimination in this small sample. The study is still preliminary, but it points toward a less invasive route for identifying people who may need closer cognitive monitoring. (Frontiers)

Can Exercise Benefits Be Transferred by Exosomes?: A Frontiers in Aging Neuroscience brief report explores a provocative question: can some molecular benefits of exercise be transferred to sedentary older animals through plasma exosomes? Researchers infused aged sedentary male rats with exosomes taken from exercised or sedentary donor animals, then examined changes in basal ganglia cells. Exosomes from exercised donors produced molecular shifts consistent with exercise-like adaptation, including lower markers of activated microglia, altered mTOR and oxidative phosphorylation signaling, and increased BDNF and irisin. The work is early and animal-based, so it should not be oversold as a therapy. Still, it strengthens interest in exosomes as carriers of exercise-induced signals that may influence neuroinflammation, metabolism, and brain aging. (Frontiers)

AI Longevity Model Aims to Predict Disease Earlier: Insilico Medicine and Human Longevity announced a multimillion-dollar collaboration to build what they describe as a large-scale AI foundation model for longevity science. The project aims to identify early signs of disease and biological decline before symptoms appear, especially for major age-related threats such as cancer, cardiovascular disease, and neurodegeneration. The partnership combines Insilico’s AI drug-discovery infrastructure with Human Longevity’s datasets, including genomics, imaging, and long-term health records. The ambition is to move longevity medicine from treatment toward prediction and prevention. As always with AI health platforms, the key questions will be validation, bias, interpretability, and whether predictions improve real-world outcomes rather than merely expanding risk labels. (Longevity.Technology)

Epigenetic Clocks Link Inequality and Mortality: A new report on an Aging-US study examines how DNA methylation clocks may help explain the biological pathway between social inequality and mortality. Researchers analyzed 2,402 adults from NHANES 1999–2002, linked to mortality data through 2019, and compared 13 methylation-based aging biomarkers with traditional clinical and behavioral risk factors. GrimAge2 showed especially strong mediation, accounting for up to 52% of mortality differences in occupational comparisons, while DunedinPoAm also contributed substantially. The study does not imply that biology makes inequality inevitable. Instead, it suggests that social disadvantage can become biologically embedded in measurable aging patterns, potentially making epigenetic clocks useful tools for studying how policy, work, and environment shape healthspan. (EurekAlert!)

A Sharper Tau Scan for Alzheimer’s Detection: A new Lancet study compares two PET tracers used to detect tau pathology in Alzheimer’s disease: flortaucipir and MK6240. According to the University of Pittsburgh release, MK6240 detected Alzheimer’s-associated tau pathology earlier and in more people, including before symptoms appeared. That matters because tau is more closely tied to symptoms and future decline than amyloid alone, and better staging could influence clinical-trial enrollment, treatment decisions, and eligibility for emerging therapies. The work also highlights a practical problem in Alzheimer’s diagnostics: the tracer chosen for imaging can affect who is labeled tau-positive. As anti-amyloid and potentially anti-tau strategies expand, earlier and more precise biomarker tools could become increasingly important. (EurekAlert!)

The Brain Circuit That Keeps Memories Apart: UCLA Health researchers report a mouse study identifying a prefrontal cortex–hippocampus circuit that helps decide whether new experiences should be linked to existing memories or stored separately. That distinction is crucial: if the brain over-links experiences, false associations can form; if it under-links them, useful context may be lost. The study, published in Nature Neuroscience, traces a pathway through which the prefrontal cortex influences how memories are organized in the hippocampus. While the immediate relevance is psychiatric conditions such as schizophrenia and bipolar disorder, the finding also matters for aging because memory organization can degrade with disease or cognitive decline. It is a basic-neuroscience story with clear long-term clinical implications. (UCLA Health)

Jumping-Gene RNAs Rise in the Aging Brain: A Medical Xpress report on work from Boston University School of Medicine highlights a neglected layer of brain aging: transposon RNA expression. Transposons, often called “jumping genes,” are usually discussed as genomic elements, but researchers examined both large and small RNAs derived from them in human brain datasets. They found that transposon RNAs increase during normal brain aging and show distinct disease-related patterns. Huntington’s disease had a stronger effect on small transposon RNAs, while Parkinson’s disease showed greater changes in large transposon RNAs. The researchers argue that these hard-to-study transcripts deserve more attention because they may reveal different molecular routes into neurodegeneration, especially when standard gene-focused analyses miss them. (Medical Xpress)

Electrical Pulses Rejuvenate Sea Squirts: A Phys.org report on Stanford-led research describes a striking bioelectric intervention in sea squirts, marine animals often used to study stem cells and immune function. Brief electrical pulses produced dramatic, long-lasting health improvements and extended lifespan, according to the report on a new PNAS study. The animals are useful aging models because they regenerate body tissue rapidly and share deep evolutionary ancestry with humans. The treatment appeared to reactivate stem-cell function and trigger a “shutdown and rebound” pattern in gene activity involving stress, repair, and mitochondrial metabolism. This is not a human anti-aging therapy, and sea squirts are far from people. But the work adds to growing interest in bioelectric control of regeneration and age-related decline. (phys.org)