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Ancient Oceans Began Losing Oxygen Millions of Years before End-Triassic Mass Extinction

Early Earth. Image credit: Peter Sawyer / Smithsonian Institution.

Chemical traces preserved in ancient rocks indicate that marine environments were deteriorating long before the catastrophe that wiped out vast numbers of species at the end of the Triassic period, around 201 million years ago.

The post Ancient Oceans Began Losing Oxygen Millions of Years before End-Triassic Mass Extinction appeared first on Sci.News: Breaking Science News.

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Astronomers Detect Clearest Signs Yet of Magnetic Fields on Extrasolar Planets

This illustration shows magnetic activity in an ultra-hot Jupiter. Image credit: ESO / M. Kornmesser / L. Calçada.

By tracking fierce winds racing through the atmospheres of seven ultra-hot Jupiters, astronomers have uncovered the strongest evidence yet that magnetic fields shape weather on worlds beyond our Solar System.

The post Astronomers Detect Clearest Signs Yet of Magnetic Fields on Extrasolar Planets appeared first on Sci.News: Breaking Science News.

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New Species of Fossil Axolotl Unearthed in Mexico

Reconstruction of the Santa María Amajac paleolake during the Late Pliocene; the paleobiodiveristy of the paleolake included microvertebrates such as the ambystomatid salamander Ambystoma quetzalcoatli, Paleocharacodon guzmanae and Goodea-like fishes, anurans and numerous species of terrestrial and aquatic plants such as Nymphaea sp., Scirpus sp., Typha sp. Image credit: Diana Guzmán-Madrid.

Paleontologists have identified a new species of the axolotl genus Ambystoma from several fossilized specimens found deep in the rocky outcrops of the Mexican state of Hidalgo.

The post New Species of Fossil Axolotl Unearthed in Mexico appeared first on Sci.News: Breaking Science News.

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Webb Detects Methane on Interstellar Comet 3I/ATLAS

Hubble captured this image of 3I/ATLAS on July 21, 2025, when the comet was 446 million km (277 million miles) from Earth. Image credit: NASA / ESA / David Jewitt, UCLA / Joseph DePasquale, STScI.

Using the spectral data from the Mid-Infrared Instrument (MIRI) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers have detected methane on 3I/ATLAS.

The post Webb Detects Methane on Interstellar Comet 3I/ATLAS appeared first on Sci.News: Breaking Science News.

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Pigeons May Sense Earth’s Magnetic Field Using Superparamagnetic Immune Cells in Their Livers

Lisowski et al. used physical, morphological, functional, and genomic assays to identify the presence of superparamagnetic macrophages in the liver of homing pigeons (Columba livia domestica). Image credit: Spanishguitar101 / CC BY-SA 4.0.

Scientists have identified supermagnetic macrophages in the livers of homing pigeons (Columba livia domestica) that appear essential for navigation when the Sun is not visible, pointing to an entirely new mechanism for animal magnetoreception.

The post Pigeons May Sense Earth’s Magnetic Field Using Superparamagnetic Immune Cells in Their Livers appeared first on Sci.News: Breaking Science News.

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Daily Glass of Fruit Juice May Lift Your Mood: Study

People who drink a glass of 100% fruit juice or a smoothie each day as part of the UK’s 5-a-day healthy eating guidance see improvements in their mental wellbeing. Image credit: Joseph Mucira.

In a small randomized trial in the United Kingdom, adults who added a serving of 100% fruit juice or a smoothie to a healthier diet reported lower depression scores after four weeks.

The post Daily Glass of Fruit Juice May Lift Your Mood: Study appeared first on Sci.News: Breaking Science News.

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Hubble Captures Active Spiral Galaxy: Messier 88

This image, taken with the Wide Field Camera 3 (WFC3) instrument aboard the NASA/ESA Hubble Space Telescope, shows the spiral galaxy Messier 88. Image credit: NASA / ESA / Hubble / D. Thilker / MAUVE-HST Team.

A newly-released Hubble image shows Messier 88, a black hole-powered spiral galaxy that is gradually plunging toward the crowded heart of the Virgo Cluster.

The post Hubble Captures Active Spiral Galaxy: Messier 88 appeared first on Sci.News: Breaking Science News.

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Paleontologists Identify New Hyaenodont Species in Pakistan

Metapterodon anari. Image credit: Steven Jasinski / SergeyAtrox1.

Paleontologists have recovered the fossilized remains of three hyaenodont species, including one previously unknown to science, from Miocene sediments in Pakistan.

The post Paleontologists Identify New Hyaenodont Species in Pakistan appeared first on Sci.News: Breaking Science News.

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490-Million-Year-Old Arthropod Fossil Fills Puzzling Gap in Fossil Record

Life reconstruction of Magnicornaspis garwoodi. Image credit: Thomas Turner.

A new species of corcoraniid arthropod that lived during the Furongian epoch, between 497 and 487 million years ago, has been identified from an exceptionally preserved specimen found near Québec, Canada.

The post 490-Million-Year-Old Arthropod Fossil Fills Puzzling Gap in Fossil Record appeared first on Sci.News: Breaking Science News.

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New Dinosaur Species from Argentina May Have Specialized in Catching Fish

Life reconstruction of Kank australis. Image credit: Gabriel Díaz Yantén.

Paleontologists in Argentina have identified a previously unknown species of unenlagiid dinosaur that stalked freshwater wetlands during the Late Cretaceous epoch, adding to evidence that some dinosaurs specialized in catching fish.

The post New Dinosaur Species from Argentina May Have Specialized in Catching Fish appeared first on Sci.News: Breaking Science News.

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Webb Spots Supermassive Black Hole Older Than Its Home Galaxy

This Webb/NIRCam image shows the little red dot Abell2744-QSO1, magnified and triply imaged by galaxy cluster Abell 2744. Image credit: NASA / ESA / CSA / Lukas Furtak, Ben-Gurion University / Alyssa Pagan, STScI.

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have found an enormous black hole in the early Universe that appears to predate its own host galaxy, raising fresh questions about how the cosmos’ first supermassive monsters were born.

The post Webb Spots Supermassive Black Hole Older Than Its Home Galaxy appeared first on Sci.News: Breaking Science News.

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Fungi Bloomed Twice around End-Cretaceous Mass Extinction

The end-Cretaceous mass extinction was marked by both the Chicxulub asteroid impact and the ongoing eruptions of the Deccan Traps volcanoes.

By studying fungal microfossils in 66-million-year-old rock samples from the Denver Basin in Colorado, Johns Hopkins University microbiologists have confirmed that the dinosaur-killing asteroid impact triggered a worldwide fungal takeover, and uncovered a second, previously unknown ecological crisis just before it.

The post Fungi Bloomed Twice around End-Cretaceous Mass Extinction appeared first on Sci.News: Breaking Science News.

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Is Dark Energy Unnecessary? Mathematicians Challenge Standard Cosmological Model of Universe

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

Mathematicians from University College London and the University of California, Davis, have published a mathematical proof that the Universe’s accelerating expansion can be explained without dark energy, dealing a serious blow to the Lambda-cold dark matter model.

The post Is Dark Energy Unnecessary? Mathematicians Challenge Standard Cosmological Model of Universe appeared first on Sci.News: Breaking Science News.

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Cretaceous Bird from China Had Pair of Tail Feathers Twice as Long as Its Body

Plumadraco bankoorum is a new bohaiornithid enantiornithine bird with a pair of exceptionally long rectrices. Image credit: Ville Sinkkonen.

Named Plumadraco bankoorum, the newly-described species of enantiornithine bird lived in what is now northeastern China during the Cretaceous period, roughly 121 million years ago.

The post Cretaceous Bird from China Had Pair of Tail Feathers Twice as Long as Its Body appeared first on Sci.News: Breaking Science News.

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Toothless, Bipedal Crocodile Relative Lived in New Mexico 212 Million Years Ago

Labrujasuchus expectatus navigated the world on two legs with tiny arms and a toothless mouth tipped in a beak. Image credit: Jorge Gonzalez / NHMLAC Dinosaur Institute.

Paleontologists have described a new species of bipedal shuvosaurid archosaur from New Mexico, shedding light on a group of creatures that roamed North America during the Triassic period, more than 200 million years ago.

The post Toothless, Bipedal Crocodile Relative Lived in New Mexico 212 Million Years Ago appeared first on Sci.News: Breaking Science News.

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Study: Early Complex Life Forms Were Bottom-Dwellers

Fossil eukaryotes from Northern Territory, Australia. Image credit: Lechte et al., doi: 10.1038/s41586-026-10533-4.

Analyzing 1.75-billion-year-old microfossils from ancient Australian seabeds, paleontologists say ancient eukaryotes -- the ancestors of every plant, animal and fungus -- huddled in oxygenated seafloor patches for over a billion years before breaking free into open water.

The post Study: Early Complex Life Forms Were Bottom-Dwellers appeared first on Sci.News: Breaking Science News.

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Bioluminescent Deep-Sea Fish Use Crystal ‘Prisms’ to Recycle Their Own Glow

Sigmops gracilis. Image credit: Wu Quancheng / Fisheries Research Institute, Council of Agriculture, Taiwan.

A marine biologist studying the photophores of a bioluminescent fish species found needle-shaped guanine crystals that scatter and redirect light instead of merely reflecting it, a discovery that could inspire more efficient biomedical and optical devices.

The post Bioluminescent Deep-Sea Fish Use Crystal ‘Prisms’ to Recycle Their Own Glow appeared first on Sci.News: Breaking Science News.

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Tomato-Soy Drink May Help Fight Chronic Inflammation in Adults with Obesity

Tomato-soy juice contains high levels of lycopene and soy isoflavones.

In a small clinical trial, researchers at the Ohio State University found that a tomato juice rich in lycopene and soy isoflavones lowered several proteins linked to chronic inflammation, raising hopes for food-based therapies.

The post Tomato-Soy Drink May Help Fight Chronic Inflammation in Adults with Obesity appeared first on Sci.News: Breaking Science News.

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Rare Ostrich-Like Dinosaur Fossil Found on Canadian Island

Life restoration of Quipalong henanesnsis, an ornithomimosaurian dinosaur that lived in what is now China during the Maastrichtian age of the Late Cretaceous, between 72 and 67 million years ago. Image credit: PaleoNeolitic / Sci.News.

Paleontologists in Canada say they have recovered a dinosaur tail vertebra from 75- to 80-million-year-old marine rocks on a small island off the coast of British Columbia, providing the clearest evidence yet that bird-like ornithomimosaurs once roamed the ancient Pacific coastline of North America.

The post Rare Ostrich-Like Dinosaur Fossil Found on Canadian Island appeared first on Sci.News: Breaking Science News.

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