Highly accurate blood test diagnoses Alzheimer's disease, measures extent of dementia

A newly developed blood test for Alzheimer's disease not only aids in the diagnosis of the neurodegenerative condition but also indicates how far it has progressed, according to a new study.

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Thinner Arctic sea ice may affect global ocean circulation

One of the ocean currents in the Arctic Ocean is at risk of disappearing this century because of climate change, according to a new study. As a result, the North Atlantic could be flooded with freshwater which would weaken the global ocean circulation.

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Martian dust could pose health risks to future astronauts

Inhaling dust particles from the Red Planet over long periods of time could put humans at risk of developing respiratory issues, thyroid disease and other health problems.

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Physicists use quantum entanglement to crack mystery of strange metals

Scientists have long sought to unravel the mysteries of strange metals -- materials that defy conventional rules of electricity and magnetism. Now, a team of physicists has made a breakthrough in this area using a tool from quantum information science. The study reveals that electrons in strange metals become more entangled at a crucial tipping point, shedding new light on the behavior of these enigmatic materials. The discovery could pave the way for advances in superconductors with the potential to transform energy use in the future.

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Is AI the new research scientist? Not so, according to a human-led study

Researchers asked generative AI to write a research paper. While adept at some steps, it wholly failed at others.

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Feeling the future: New wearable tech simulates realistic touch

Most haptic devices only deliver feedback as simple vibrations. New device applies dynamic forces in any direction to simulate a more realistic sense of touch. Small, lightweight device can enhance virtual reality, help individuals with visual impairments, provide tactile feedback for remote health visits and more.

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Scientists uncover key mechanism in evolution: Whole-genome duplication drives long-term adaptation

Scientists uncovered how whole-genome duplication emerges and remains stable over thousands of generations of evolution in the lab.

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New species revealed after 25 years of study on 'inside out' fossil -- and named after discoverer's mum

A new species of fossil is 444 million years-old with soft insides perfectly preserved. Research 'ultramarathon' saw palaeontologist puzzled by bizarre fossil for 25 years.

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Melting ice, more rain drive Southern Ocean cooling

Researchers found increased meltwater and rain explain 60% of a decades-long mismatch between predicted and observed temperatures in the ocean around Antarctica.

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Listen to quantum atoms talk together thanks to acoustics

To get around the constraints of quantum physics, researchers have built a new acoustic system to study the way the minuscule atoms of condensed matter talk together. They hope to one day build an acoustic version of a quantum computer.

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How did the large brain evolve?

Two specific genes that evolve exclusively in humans jointly influence the development of the cerebrum. Researchers have provided evidence that these genes contribute together to the evolutionary enlargement of the brain.

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Scientists discover why obesity takes away the pleasure of eating

Many obese people report losing pleasure in eating rich foods -- something also seen in obese mice. Scientists have now discovered the reason. Long-term high-fat diets lower levels of neurotensin in the brain, disrupting the dopamine pleasure network and decreasing the desire to eat high-fat foods. Raising neurotensin levels in mice brings back the pleasure and aids weight loss. Bringing back the pleasure could help people break the habit of overeating.

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The devastating human impact on biodiversity

Humans are having a highly detrimental impact on biodiversity worldwide. Not only is the number of species declining, but the composition of species communities is also changing. This is one of the largest studies ever conducted on this topic.

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Lasso-shaped antibiotic evades standard drug resistance

A small molecule shaped like a lasso may be a powerful tool in the fight against infectious diseases.

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At-home smell test for early detection of Alzheimer's disease

Researchers developed olfactory tests -- in which participants sniff odor labels that have been placed on a card -- to assess people's ability to discriminate, identify and remember odors. They found that participants could successfully take the test at home and that older adults with cognitive impairment scored lower on the test than cognitively normal adults.

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Insomniac fruit fly mutants show enhanced memory despite severe sleep loss

Fruit fly mutants that have severe sleep deficits perform better at olfactory learning and memory tasks, according to a new study. The paradox of enhanced memory despite sleep loss could be explained by protein kinase A (PKA) signaling in the mushroom body of the fly brain.

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Scientists engineer starfish cells to shape-shift in response to light

Scientists used light to control how a starfish egg cell jiggles and moves during its earliest stage of development. Their optical system could guide the design of synthetic, light-activated cells for wound healing or drug delivery.

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New research reveals secrets about locust swarm movement

New research is reshaping our understanding of one of nature's most stunning yet destructive phenomena -- massive locust swarms moving together.

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Galapagos birds exhibit 'road rage' due to noise

A new study has discovered that birds in the Galapagos Islands are changing their behavior due to traffic noise, with those frequently exposed to vehicles showing heightened levels of aggression. During trials involving traffic noise, Galapagos yellow warblers (Setophaga petechia aureola) increased the duration of their songs, increased the minimum frequencies of their songs (to reduce overlap with the traffic noise), and birds living close to roads displayed increased physical aggression.

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Revolutionary blueprint to fuse wireless technologies and AI

Virginia Tech researchers say a true revolution in wireless technologies is only possible through endowing the system with the next generation of artificial intelligence (AI) that can think, imagine, and plan akin to humans. Doing so will allow networks to break free from traditional enablers, deliver unprecedented quality, and usher in a new phase of the AI evolution.

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New AI tool generates high-quality images faster than state-of-the-art approaches

Researchers developed a hybrid AI approach that can generate realistic images with the same or better quality than state-of-the-art diffusion models, but that runs about nine times faster and uses fewer computational resources. The tool uses an autoregressive model to quickly capture the big picture and then a small diffusion model to refine the details of the image.

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New eye drops slow vision loss in animals

Researchers have developed eye drops that extend vision in animal models of a group of inherited diseases that lead to progressive vision loss in humans, known as retinitis pigmentosa.

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Treasure trove of galaxies, glimpses of deep fields

On 19 March 2025, the European Space Agency's Euclid mission releases its first batch of survey data, including a preview of its deep fields. Here, hundreds of thousands of galaxies in different shapes and sizes take center stage and show a glimpse of their large-scale organization in the cosmic web.

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Marine animals help solve ocean issues

Sensors attached to animals gather valuable data to track and mitigate the human influence on marine life. The review paper emphasizes the importance of integrating data from various sources and advocates for an 'Internet of Animals' based on open access and shared standards.

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Oxygen discovered in most distant known galaxy

Astronomers have detected oxygen in the most distant known galaxy, JADES-GS-z14-0. This record-breaking detection is making astronomers rethink how quickly galaxies formed in the early Universe.

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From dinosaurs to birds: the origins of feather formation

Feathers, essential for thermoregulation, flight, and communication in birds, originate from simple appendages known as proto-feathers, which were present in certain dinosaurs.By studying embryonic development of the chicken, researchers from the University of Geneva (UNIGE) have uncovered a key role of a molecular signalling pathway (the Shh pathway) in their formation. This research provides new insights into the morphogenetic mechanisms that led to feather diversification throughout evolution.

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Innovative infant wearable uses artificial intelligence for at-home assessments of early motor development

The smart MAIJU jumpsuit offers a novel approach to at-home monitoring of infants' early motor development. The wearable device combines expertise in medicine, measuring technology and AI, enabling objective and accurate assessment of children's motor skills without the presence of researchers.

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Bacteria invade brain after implanting medical devices

Brain implants hold immense promise for restoring function in patients with paralysis, epilepsy and other neurological disorders. But a team of researchers has discovered that bacteria can invade the brain after a medical device is implanted, contributing to inflammation and reducing the device's long-term effectiveness.

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How big brains and flexible skulls led to the evolution of modern birds

New research shows how physical changes in the skull affected the mechanics of the way birds move and use their beaks to eat and explore their habitats -- adaptations that helped them evolve into the extraordinarily diverse winged creatures we see today.

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Sharks are dying at alarming rates, mostly due to fishing. Retention bans may help

Nearly one-third of sharks are threatened with extinction, mostly due to fishing. While mandated releases are helpful, researchers discovered that they aren't enough to stabilize shark populations.

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Unique dove species is the dodo of the Caribbean and in similar danger of dying out

Ancient DNA shows an endangered dove species endemic to Cuba is more genetically distinct than the dodo was before it died out.

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Iguanas floated one-fifth of the way around the world to colonize Fiji

The only iguanas outside the Americas, Fiji iguanas are an enigma. A new genetic analysis shows that they are most closely related to the North American desert iguana, having separated about 34 million years ago, around the same time that the islands emerged from the sea. This suggests that the iguanas rafted 5,000 miles across the Pacific from western North America to reach Fiji -- the longest known transoceanic dispersal of any land animal.

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Weighing in on a Mars water debate

Water once existed in abundance of at the surface of Mars. How much of that water has been stored in the planet's crust is still unclear, according to a new analysis.

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TOI-1453: Sub-Neptune in system of two exoplanets

Astronomers have discovered two exoplanets around TOI-1453, a star about 250 light years away. These two exoplanets, a super-Earth and a sub-Neptune, are common in the galaxy, yet are absent from our system. This discovery paves the way for future atmospheric studies to better understand these types of planets.

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Spinning, twisted light could power next-generation electronics

Researchers have advanced a decades-old challenge in the field of organic semiconductors, opening new possibilities for the future of electronics. The researchers have created an organic semiconductor that forces electrons to move in a spiral pattern, which could improve the efficiency of OLED displays in television and smartphone screens, or power next-generation computing technologies such as spintronics and quantum computing.

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Study highlights noninvasive hearing aid

A study highlights a new approach in addressing conductive hearing loss. A team of scientists has designed a new type of hearing aid that not only improves hearing but also offers a safe, non-invasive alternative to implantable devices and corrective surgeries.

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Delhi air pollution worse than expected as water vapor skews figures

New Delhi's air pollution is more severe than previously estimated with particles absorbing atmospheric water vapor leading to particulate matter levels across the city being underestimated by up to 20%.

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Black holes: not endings, but beginnings? New research could revolutionize our understanding of the universe

New research suggests black holes may transition into 'white holes', ejecting matter and potentially even time back into the universe, defying our current understanding of these cosmic giants.

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Small, faint and 'unexpected in a lot of different ways': Astronomers make galactic discovery

The discovery of the dwarf galaxy Andromeda XXXV --located roughly 3 million light-years away and the smallest yet found in the Andromeda system -- is forcing astronomers to rethink how galaxies evolve in different cosmic environments and survive different epochs of the universe.

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How climate change affects rain and floods

Climate change may lead to more precipitation and more intense floods. A new study shows that to understand the details of this relationship, it is important to distinguish between different types of rainfall and flood events -- namely, between short-term events that occur on a time scale of hours, and longer-term events that last several days. In each case, climate change has a different impact.

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technique to manipulate water waves to precisely control floating objects

Where there's water, there are waves. But what if you could bend water waves to your will to move floating objects? Scientists have now developed a technique to merge waves in a water tank to produce complex patterns, such as twisting loops and swirling vortices. Some patterns acted like tweezers or a 'tractor beam' to hold a floating ball in place. Other patterns made the ball spin and move precisely in a circular path. In the future, the technique could be scaled down to precisely move particles the size of cells for experiments, or scaled up to guide boats along a desired path on the water.

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Microplastics could be fueling antibiotic resistance

Researchers were shocked to see that bacteria's antimicrobial resistance is strengthened when exposed to plastic particles and point to a potential outsized impact on refugees.

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Scientists discover new heavy-metal molecule 'berkelocene'

Scientists have discovered 'berkelocene,' the first organometallic molecule to be characterized containing the heavy element berkelium. The breakthrough disrupts long-held theories about the chemistry of the elements that follow uranium in the periodic table.

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Is red wine a healthier choice than white wine? Uncorking the cancer risks

Researchers have conducted a study that scours 'the vast and often contradictory literature on the carcinogenicity of red and white wine' to assess whether this assumption holds up, and to compare the cancer risks associated with wine type.

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Mysterious phenomenon at center of galaxy could reveal new kind of dark matter

A mysterious phenomenon at the center of our galaxy could be the result of a different type of dark matter.

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New STI impacts 1 in 3 women: Landmark study reveals men are the missing link

A landmark study reveals that bacterial vaginosis (BV), a condition affecting nearly a third of women worldwide and causing infertility, premature births and newborn deaths, is in fact an STI, paving the way for a revolution in how it is treated.

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Earth's orbital rhythms link timing of giant eruptions and climate change

An international team of scientists has synchronized key climate records from the Atlantic and Pacific Oceans to unravel the sequence of events during the last million years before the extinction of the dinosaurs at the Cretaceous/Paleogene boundary. New high resolution geochemical records for the first time reveal when and how two major eruption phases of gigantic flood basalt volcanism had an impact on climate and biota in the late Maastrichtian era 66 to 67 million years ago.

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The changing chorus: How movements and memories influence birdsong evolution

New research has provided fresh insights into how bird songs evolve over time, revealing a significant role for population dynamics in shaping song diversity and change. The findings are based on an analysis of over 100,000 bird songs.

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Adaptability of some coral reef fish to rising temperatures

Researchers have found that reef fish from the Arabian Gulf, the world's hottest sea, exhibit a higher tolerance to temperature fluctuations compared to those from more thermally stable coral reefs. However, the Arabian Gulf hosts fewer fish species overall, indicating that only certain fishes can withstand rising global temperatures.

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Tropical forests in the Americas are struggling to keep pace with climate change

Tropical rainforests play a vital role in global climate regulation and biodiversity conservation. However, a major new study reveals that forests across the Americas are not adapting quickly enough to keep pace with climate change, raising concerns about their long-term resilience.

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Tracking polar bears during their most secretive stage of life

Researchers have combined satellite collar data with specialized cameras to shed light on one of the most mysterious and important stages in polar bears' lives -- maternal denning, when bears give birth then emerge with their cubs.

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Amphibians bounce-back from Earth's greatest mass extinction

Ancient frog relatives survived the aftermath of the largest mass extinction of species by feeding on freshwater prey that evaded terrestrial predators, academics have found.

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Insect populations are declining -- and that is not a good thing

Using two species of flies from different climates -- one from the cool, high-altitude forests of Northern California, the other hailing from the hot, dry deserts of the Southwest -- scientists discovered remarkable differences in the way each processes external temperature.

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The pot is already boiling for 2% of the world's amphibians

Amphibians are increasingly vulnerable to global warming, according to new research.

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Tattoos may be linked to an increased risk of cancer

Research has shown that tattoo ink does not just remain where it is injected. Particles from the ink can migrate to the lymph nodes, where they accumulate.

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New biosensor can detect airborne bird flu in under 5 minutes

As highly pathogenic H5N1 avian influenza continues to spread in the U.S., posing serious threats to dairy and poultry farms, both farmers and public health experts need better ways to monitor for infections, in real time, to mitigate and respond to outbreaks. Newly devised virus trackers can monitor for airborne particles of H5N1.

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New 4D Brain Map reveals potential early warning signs of multiple sclerosis

Using an animal model of multiple sclerosis (MS), researchers have created a four-dimensional brain map that reveals how lesions similar to those seen in human MS form. These findings provide a window into the early disease state and could help identify potential targets for MS treatments and brain tissue repair.

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