A theoretical model finds that a low safety threshold can shift work downstream and produce more risk than no rule at all.
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Conceptual illustration of safety responsibility moving through an AI supply chain; not a real factory, law, company, or measured deployment. Original editorial illustration generated with built-in Codex Image Gen for The Machine Press, 2026-07-21.
Cornell and Carnegie Mellon researchers modeled a two-tier market in which general-purpose AI providers supply downstream companies. In the model, weak regulation of only one tier can encourage upstream providers to offload safety work and downstream firms to free-ride, producing a backfiring effect. Coordinated targets for both tiers can improve safety and profits. The PNAS paper is a simplified theoretical model, not evidence that every existing AI law has produced these outcomes.
Evidence-minded editorial reconstruction of Liopleurodon ferox; not documentary evidence or a literal study figure. Original editorial illustration generated with built-in Codex Image Gen for The Machine Press, 2026-07-21.
A comprehensive reappraisal puts Liopleurodon near eight metres, not the 25 metres fixed in popular memory.
University of Portsmouth researchers re-examined every specimen assigned to Liopleurodon ferox, including a near-complete skull, two well-preserved skeletons, and extensive postcranial material. Their reconstruction places maximum length just above eight metres and finds a skull about one quarter of total body length. Larger estimates relied on isolated fragments that cannot confidently be assigned to the species. The revised animal was smaller than its television legend but remained the largest aquatic vertebrate in the Oxford Clay ecosystem.
People select unusually exciting experiences to share, leading viewers to overestimate how common those events are.
Virginia Tech researchers report that social-media users preferentially share rare and exciting experiences, while audiences exposed to those feeds infer that the exceptional events happen more often than they really do. That human selection bias can shape the feed before any ranking algorithm amplifies it, and viewers may then seek more unusual experiences to post themselves. The study isolates a behavioral mechanism; it does not say platforms, recommendation systems, or individual users all contribute equally.
Generic fog and infrastructure; not a NASA aircraft, mission instrument, fire cloud, glacier, pollution map, or study result. Belli Kins / Pexels; cropped, resized, metadata stripped, and converted to WebP by The Machine Press.
NASA's newest suborbital missions will chase fire clouds, map pollution, probe glaciers, and watch unstable slopes.
NASA says six Earth Venture Suborbital projects will mobilize aircraft and ground teams over the next several years. The first campaign will study pyrocumulonimbus storms over western wildfires with high-altitude instruments. Other missions will measure agricultural emissions, compare air quality in Atlanta and Mexico City, map Arctic glacier change, and track landslide hazards in California and Alaska. These are planned science campaigns, not completed results.
After 60 weeks, semaglutide users reported less appetite relief but still ate substantially less than placebo participants.
A Penn Medicine trial followed 120 adults with overweight or obesity receiving weekly semaglutide or placebo plus lifestyle counseling. At weeks 20, 40, and 60, the semaglutide group consumed about 24 to 30 percent fewer calories during laboratory meals. Subjective differences in hunger and food preoccupation faded later, while average weight loss reached 15.1 percent versus 3.4 percent with placebo. The study was partly funded by Novo Nordisk, which the authors say did not control its conduct or reporting.
Activating KCNMB1 stiffened metastatic cells and helped immune cells attack them in preclinical models.
University of Illinois Chicago researchers identified the ion-channel protein KCNMB1 as a controller of cancer-cell stiffness. Increasing its activity made metastatic cells less yielding and more vulnerable to T cells and natural killer cells. In a metastatic breast-cancer animal model, the potassium-channel activator BMS-204352 reduced distant lung growth, with effects dependent on functional T cells. The work suggests a druggable biophysical target but has not established safety or benefit in patients.
A single-frame model predicts risky subway boarding behavior before doors close, with reported accuracy of 97.58 percent.
Sungkyunkwan University researchers developed a computer-vision system intended to flag passengers at risk of being trapped by closing subway doors. The model uses one CCTV frame to classify risky boarding behavior and reported 97.58 percent accuracy in the study dataset, aiming to warn operators before an entrapment occurs. The result is a research evaluation, not evidence of performance across every station, camera angle, crowd, weather condition, or deployed transit network.
A secondary MIND trial analysis suggests baseline amyloid and tau markers may modify cognitive response.
Rush researchers reanalyzed data from the three-year MIND diet trial and found that cognitive response varied with baseline blood levels of amyloid beta 40 and phosphorylated tau 181. Participants with higher markers appeared more likely to benefit from the dietary intervention. The original trial did not find a statistically significant overall cognitive advantage over its control diet, and this post hoc analysis was designed to find patterns rather than confirm a prespecified treatment effect.
Generic conceptual geometry; not a turbulence field, machine-learning model, flow measurement, aircraft design, or scientific result. Tim West / Google DeepMind / Pexels; cropped, resized, metadata stripped, and converted to WebP by The Machine Press.
Multi-objective learning produced a foundation turbulence model that generalizes across flow mechanisms without case-by-case tuning.
Researchers trained a unified machine-learning turbulence model on nine representative flows drawn from a library of 36 canonical and complex cases, then tested it on the remainder. The model improved predictions over its baseline across categories while preserving robust behavior across different flow mechanisms. The work targets Reynolds-averaged Navier-Stokes engineering simulations, where turbulence is modeled rather than fully resolved. Its reported generalization does not eliminate validation for new aircraft, turbines, rivers, or climate applications.
ESA's Arrakihs mission will search nearby galaxy halos for dim tidal debris that records past collisions.
The University of Portsmouth says its scientists are contributing to Arrakihs, a European Space Agency mission designed to image extremely faint structures around nearby galaxies. By mapping tidal streams, shells, and diffuse stellar halos, the spacecraft will test how galaxies assembled through mergers and how dark matter shapes their outskirts. The announcement describes a mission and science program still ahead; it does not report discoveries or a completed survey.
A U.S. analysis finds steep growth in prescriptions among adolescents and young adults, sometimes alongside bariatric surgery.
UT Southwestern researchers report rapidly increasing use of GLP-1 weight-loss medicines among U.S. adolescents and young adults, including patients also receiving metabolic and bariatric surgery. The JAMA Pediatrics study tracks utilization patterns rather than proving long-term benefits or harms for every age group. The authors frame the change as a reason to study safety, access, treatment sequencing, and follow-up as medical obesity care expands among younger patients.
Rare SCN10A variants made sweat-control pathways overactive in mice, shifting attention beyond the glands themselves.
Johns Hopkins Medicine researchers identified rare variants in SCN10A, which encodes the NaV1.8 sodium channel, as drivers of overactivity in nerve pathways controlling sweat in mouse experiments. The result supplies evidence that some primary hyperhidrosis can originate in the nervous system rather than solely in sweat glands. It points toward more targeted therapies, but the study is preclinical and does not establish a diagnostic test or treatment for the broad population with excessive sweating.
Generic renewable-energy hardware; not the reported wastewater apparatus, microbial cell, fertilizer product, treatment site, or study result. Los Muertos Crew / Pexels; cropped, resized, metadata stripped, and converted to WebP by The Machine Press.
A microbial desalination cell drove forward osmosis while recovering water and fertilizer nutrients from synthetic livestock wastewater.
Researchers linked electrically assisted forward osmosis to a microbial desalination cell so electricity generated by wastewater-fed microbes could move magnesium ions, promote struvite fertilizer formation, and increase water transport. Tests used synthetic livestock wastewater and demonstrate a closed-loop laboratory platform. The work suggests compact resource-recovery systems that need less external electricity, but it does not yet establish durability, economics, contaminant removal, or performance in a full-scale farm installation.
An AI-guided planning method aims to spread intra-arterial therapy across malignant brain tumors while reducing off-target delivery.
Researchers presenting at the Society of NeuroInterventional Surgery meeting described an AI method for identifying the multiple blood vessels that feed a malignant brain tumor. The map is intended to guide catheter delivery through more than one artery, potentially covering more tumor while limiting exposure elsewhere. This is a conference report about an experimental technique; it does not establish improved survival, routine clinical availability, or superiority in a randomized trial.
LPL-producing endothelial cells act as entry guides for activated immune cells in liver metastases.
A DKFZ and Heidelberg University team identified a specialized endothelial-cell subgroup inside liver metastases that produces lipoprotein lipase. These cells help activated T cells cross tumor blood vessels and enter metastatic tissue, connecting vascular metabolism to immune access. The finding may help explain why some tumors respond poorly to immunotherapy and suggests a route for improving infiltration. It remains mechanistic research, not a validated therapy for patients with liver metastases.
Morphology and mitochondrial DNA distinguish Oreolalax wumengmontis as Yunnan's first new member of its genus in 36 years.
Researchers describe Oreolalax wumengmontis from the Wumeng Mountain National Nature Reserve in southwest China. Comparisons of anatomy and mitochondrial 16S rRNA and COI genes place it on a distinct lineage, with reported genetic distances of 11.25 and 17.61 percent from its nearest named relative. The discovery expands a poorly known mountain genus and makes the protected habitat more important for survey work. A new species description does not by itself establish population size or conservation status.
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