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UT Austin geologists dated zircons from Oklahoma's Ames crater to about 370 million years ago, nearly 100 million years younger than believed. That pulls the buried crater out of the Ordovician impact cluster some researchers cited as evidence of a debris ring around the ancient Earth.
Reality
UCLA researchers scanning nearly 1,500 adults tied older-looking brains to specific gut bacteria in the one group that also gave stool samples. That makes the gut a lead for follow-up studies, though an association cannot show that changing gut bacteria would slow brain aging.
Reality
Researchers revisiting a 1980s Victorian trial found heavily thinned mountain ash stored as much wood carbon as unlogged forest, or more, after 30 years. That gives the protect-or-clearfell argument a tested middle option, on evidence from one site that counts only carbon in wood.
Reality
Cosmologists' simulations suggest primordial magnetic fields may have sped hydrogen formation, shifting the 67 km/s/Mpc rate read from the CMB. That gives the 6 km/s/Mpc Hubble tension a physical cause.
Reality
Chinese Academy of Sciences scientists found gamma-iron, never before seen in natural lunar material, as the main iron in two Chang'e-6 impact-glass samples. The mineral is a new candidate recorder of the Moon's lost magnetic field, though the team says further work must show how much it can reveal.
Reality
Surrey physicists have designed a superfluid-helium qubit that, by their calculations, would err about 100 times less often than superconducting qubits. No device has been built yet, so the figure is a prediction until the team's planned prototype measures it.
Reality
Researchers following 1,647 Framingham adults linked each 3-point rise in MIND diet score to slower grey matter loss, equal to about 2.5 years of brain aging. The cohort is observational, so the result shows how eating habits tracked with brain shrinkage and cannot say how much of the difference the food itself caused.
Reality
Mount Sinai researchers report APOE4 turns brain pericytes into scar-making cells, and blocking TGF-beta reversed the change in aged mice. That gives drug developers a vascular target in carriers of the strongest known genetic risk factor for Alzheimer's.
Reality
Texas A&M researchers say adults aged 45 to 65 on 10 grams of creatine a day gained about 2.4 pounds of lean tissue in 12 weeks without a workout program. The creatine-versus-placebo comparison was randomized, but a three-month study of healthy middle-aged people cannot yet show whether the supplement preserves muscle into old age.
Reality
Semmelweis researchers say depression, poor sleep, obesity and smoking may sustain symptoms in the 6-28% of rheumatoid arthritis cases that resist treatment. They want doctors to look for those causes before escalating drugs when inflammation markers improve but pain and fatigue persist.
Reality
Researchers found more than 12,000 early eukaryote fossils in ancient Australian drill cores, only in rocks laid down where oxygen was present. Oxygen-free rocks still preserved simpler microbes, so the pattern points to where these cells lived, though it cannot show why they first arose.
Reality
University of Barcelona researchers found that tirzepatide activated calorie-burning brown fat in obese mice eating the same amount as untreated controls. The result points to an effect on metabolism beyond appetite that has not yet been tested in humans.
Reality
LSU geologists imaged the plate sinking off Vancouver Island tearing apart, with part of the slab dropped about 5 kilometres along one fault. The finding suggests subduction zones end in stages, though its bearing on future Cascadia earthquakes is stated only as a possibility.
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Montana State geneticist Ed Schmidt spent nine years finding the backup route that lets mammalian cells free cysteine when their main supply systems fail. Whether tumours use it to resist treatment is, for now, a possibility the university raises.
Reality
Tidal modelling published in Icarus says Uranus's moon Ariel needed a past ocean, possibly more than 170 km deep, to form its giant fractures. How deep depends on how eccentric Ariel's orbit once was, and surface maps alone cannot tell the two apart.
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University of Utah astronomers observed 29 massive stars in six dwarf galaxies with Hubble and found winds weaken sharply below a fifth of solar metallicity. None of the stars sits in an early galaxy, so the link to Webb's early galaxies remains an inference.
Reality
A Sheffield Hallam and Curtin team paired mineral grain dating with simulations of last-glaciation ice sheets. The models let ice carry the six-tonne sandstone to the North Sea and leave the rest of the 700 km to people.
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A Chinese team scored seven nights of wrist accelerometry in UK Biobank and matched the resulting sleep-stage fractions against nearly nine years of diagnoses. Their own recommendation still lands on hours in bed, 6 to 8 of them.
Reality
Karolinska researchers traced 975 congenital infections through a cohort born from 1987 to 2021 and found a thirtyfold risk of severe intellectual disability, alongside an estimated 1.2 percent share of all such cases in Sweden.
Reality
Yale researchers read the original makeup of planetesimals that melted so thoroughly their textures vanished, and place the Solar System's preference for heat-formed rock beads inside the first million years.
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