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• Gli astronomi hanno scoperto una rara sorgente di raggi X che fornisce informazioni cruciali sulla natura dei 'little red dots', galassie compatte dell'universo primordiale rilevate dal James Webb Space Telescope. • La scoperta, riportata l'11 maggio 2026, rivela che questi punti ospitano buchi neri supermassicci che accrescono attivamente materiale, spiegando così il loro intenso bagliore rosso e le loro dimensioni ridotte. • Questa svolta è fondamentale poiché risolve un enigma chiave della cosmologia, confermando i meccanismi di crescita dei buchi neri nel primo miliardo di anni dell'universo e aiutando l'interpretazione dei dati del JWST.

Data tool could help NHS prioritise who gets access to limited weight-loss medication, say scientistsA new tool that can shed light on who is most at risk of obesity-related diseases could help identify people who would benefit most from weight-loss medications, researchers have said.Recent data suggests about two-thirds of adults in England are overweight or obese – a situation that has caused concern among health experts. Continue reading...

• Stanford University neuroscientists discovered a blood-based biomarker (phosphorylated tau-217) that reliably predicts Alzheimer's disease development one to two decades before cognitive decline appears, according to research published April 20. • The biomarker was identified through analysis of blood samples from 2,500 cognitively healthy individuals followed for 15 years, with positive predictive value exceeding 92% in early-stage detection. • The finding could enable preventative therapies targeting amyloid and tau proteins before neurodegeneration becomes irreversible, potentially transforming Alzheimer's treatment approaches.

Gunman, identified as Shamar Elkins, fatally shot the children – including seven of his own – at two separate housesMass shooting rampage in Louisiana leaves eight children dead and others woundedSign up for the Breaking News US newsletter emailLouisiana authorities have identified eight children – aged three to 11 – who were killed Sunday during what police described as a “violent domestic incident” in Shreveport that marked the deadliest US mass shooting in more than two years.The Caddo parish coroner’s office identified the children as Jayla Elkins, 3; Shayla Elkins, 5; Kayla Pugh, 6; Layla Pugh, 7; Markaydon Pugh, 10; Sariahh Snow, 11; Khedarrion Snow, 6; and Braylon Snow, 5. Continue reading...

Analysis of more than 500 brain scans finds LSD, psilocybin and other psychedelics increase cross-talk between brain systemsScientists have identified a hallmark signature produced by psychedelic drugs in the human brain when users experience their mind-altering effects.The “neural fingerprint” of the psychedelic trip was spotted among hundreds of brain scans of people on LSD, psilocybin, DMT, mescaline and ayahuasca, pointing to a shared impact on the brain’s behaviour. Continue reading...

• Researchers at Binghamton University, State University of New York, along with colleagues at the University of Virginia, published a study in Science Advances mapping innovation landscapes to identify disruptive studies and patents that challenge existing scientific paradigms. • The method, developed by Sadamori Kojaku and colleagues, helps pinpoint discoveries that reshape the course of science, such as the theory of evolution, atomic splitting, and antibiotic development. • The robust measure of disruptiveness provides a systematic way to identify simultaneous breakthroughs across scientific fields and could accelerate recognition of transformative research.

• Scientists have discovered a molecular mechanism that explains the effectiveness of exercise in reversing age-related muscle deterioration. • The finding provides new insight into the cellular processes through which physical activity combats muscle aging at the molecular level. • This breakthrough could lead to targeted therapies mimicking exercise benefits for individuals unable to maintain regular physical activity.