Researchers developed CANID, a 40-minute assessment measuring memory and behavioral flexibility to detect subtle cognitive impairment in dogs. The study confirmed that small breeds like Chihuahuas are more likely to experience decline, and may inform preventative and therapeutic strategies for pet owners.
Researchers refined the age of the oldest human footprints in North America and found that humans witnessed a complete turnover of the landscape from conifer forest to sagebrush and oak steppe. The study reveals dynamic environmental conditions, including swings in water availability and severe aridity, within a century.
Researchers have confirmed that water clouds on a Jupiter-sized world outside our solar system are changing thickness over time, similar to weather on Earth. The James Webb Space Telescope captured the most detailed time-series portrait of the object's atmosphere, revealing complex processes that govern its behavior.
The PUFFINS mission will analyze how interstellar dust alters starlight as it travels to Earth, revealing new details about tiny grains and their formation. By measuring polarization, PUFFINS will build a detailed map of how interstellar dust varies across the sky.
A new review published in Science highlights the critical role of X and Y chromosomes in shaping human health and disease, influencing immunity, metabolism, brain aging, and disease progression. Understanding these mechanisms could lead to sex-aware medicine and tailored treatment strategies.
A new study found that cancer cells selectively chip away gene-rich sections of the Y chromosome, triggering ripples that regulate tumor growth. The Y chromosome erosion was found to be acquired over time, rather than inherited, and was linked to increased mortality from certain cancers.
A new study using satellite data found that dryland ecosystems are experiencing escalating instability, with 80% of global drylands showing increased variability. This boom-and-bust dynamic threatens rain-fed agriculture and ecology, with implications for livestock production and rangeland management.
Researchers found that early galaxies were already producing and dispersing heavy elements, such as oxygen and carbon, 500 million years after the Big Bang. This discovery challenges previous assumptions and provides insights into the early universe's chemical evolution.
A University of Arizona study found that one in three residents who drank contaminated water still report symptoms of post-traumatic stress. The researchers surveyed 363 people and found that 34% reported symptoms, including worry about contamination and sleeping badly.
Researchers found that the loss of the Y chromosome in healthy-seeming tissue can serve as an early indicator of cancer development. The study analyzed 1,000 tissue samples from 405 men and discovered that Y chromosome loss increased in normal tissue adjacent to tumors, particularly in organs like the colon, rectum, and esophagus.
Researchers used state-of-the-art computational techniques to reveal fundamental differences in moon formation from a Mars-sized object and Earth 4.5 billion years ago. Material strength of the two ancestral bodies matters in the process, changing how researchers think the planetary collision happened.
A national trial found that treating young children with an oral bacterial extract did not reduce the risk of severe wheezing and respiratory illnesses that can precede asthma. The ORBEX trial, led by the University of Arizona, tested the preventive potential of OM-85, a treatment that had shown promise in earlier, smaller studies.
Researchers at the University of Arizona assessed seven generative AI models for fallibility, persuadability and correctability during lengthy conversations. The study revealed intrinsic limitations of these models, including oscillation between accepting and rejecting false statements, and the need for careful human engagement to miti...
Researchers developed a tool to analyze daily pet-owner conversations, finding that no two owners sound alike and that one-tenth of daily interactions are unique to each owner. The tool, AURAL-Pet, may help explain why pets affect some owners' well-being more than others.
A new scale developed by University of Arizona researchers helps marketers predict consumer habits by analyzing which era evokes the most nostalgia. The Nostalgia for Eras scale assesses three components: warmth, loss, and idealization, identifying specific decades that evoke strong nostalgic feelings.
A study by Nooshin L. Warren found that small changes in sexual misconduct and gender portrayals can affect box office revenue, with adjustments adding or subtracting $8-13 million. Meanwhile, public expectations of gender roles seemed to regress after #MeToo, indicating a slower adoption of new norms.
Researchers at the University of Arizona have demonstrated a new application for graphene nanoribbons, a material that can withstand extreme environments. The team integrated GNRs into semiconductor devices and exposed them to gamma radiation, showing that they can serve as radiation sensors for fusion reactors and in deep space.
A new University of Arizona study reveals that more than 70% of parents and children in the US use media across various devices during family meals. The study found that media use by parents and children is not linked to each other, and that ethnicity is a significant predictor of media use.
A team of U of A astronomers helped an international research consortium discover the faintest and farthest quasars in the early universe, revealing new insights into supermassive black holes and their host galaxies. The discovery includes two record-breaking quasars with cosmic ages of about 670 million years.
Researchers at University of Arizona have found a promising new approach to slow fatal nerve disease ALS by blocking a small part of a key protein. The experimental drug XL20 protects nerve cells and reduces muscle weakness in mice and human nerve cells, representing a potential breakthrough.
Babies born with low birth weight are at higher risk for heart, lung, and metabolic diseases later in life due to the overexpression of axon guidance proteins. These proteins play a key role in developing neurons and organs, and their increased levels are associated with poorer lung function in adulthood.
A University of Arizona research team has developed a nanotechnology-based platform combining paclitaxel with siRNA to enhance the immune response against lung cancer. The approach exploits an 'eat me' signal on dying cancer cells, attracting immune cells and initiating tumor death.
A global study of over 5,100 species reveals that climate change is transforming ecosystems and threatening species across the globe. Temperate species are experiencing more local extinctions than tropical species due to faster warming rates, with temperate regions losing up to 49% of their species.
A groundbreaking study identifies a direct energy route between mitochondria and the nucleus, supporting gene regulation, chromatin remodeling, and cell differentiation. The finding challenges traditional assumptions about energy transfer in cells and has significant implications for understanding health and disease.
A new University of Arizona study has found that several common sleep behaviors may be linked to signs of brain aging. Sleeping outside the recommended seven-to-nine-hour range, frequent daytime napping, and sleeplessness were distinctly associated with greater volume of white matter lesions in healthy people.
A new approach enables computers and machines to capture images at higher resolution and faster speed, making it impervious to reflective surfaces. The technology uses a virtual screen created by repurposing the surroundings of specular objects.
A study led by University of Arizona researchers found that azithromycin did not improve symptoms in preschool children with severe wheezing. The trial results challenge the idea that certain types of bacteria contribute to wheezing and asthma, suggesting that viral infections play a more significant role.
A widely used depression screening questionnaire is accurate for both people with and without chronic pain, according to a new study. The study debunks the myth that screening inflates depression scores for those with chronic pain, which can be masked by fatigue and sleep disturbances.
A team at the University of Arizona discovered exceptionally fast and powerful galactic winds from quasars a billion years after the Big Bang. These winds could have caused galaxies to lose gas supplies, effectively shutting down star formation. The study suggests that quasars with extreme outflows were more common in the early univers...
Researchers identify 'hooked hairs' in common beans that form tiny structures to defend against drought and nutrient starvation. These cells help young plants survive long before their mature root systems take shape.
Researchers at the University of Arizona used drones equipped with ground-penetrating radar to map the thickness of rocky debris covering glaciers on Earth. The technology could help future astronauts locate accessible water locked in buried ice on Mars.
Researchers found that more accurate weather forecasts can significantly reduce heat-related deaths. The study suggests that technological advancements in forecasting can offset projected increases in heat-related fatalities due to climate change. In fact, the economic value of saving lives through improved forecasting is substantial a...
The OSIRIS-REx mission has found that asteroid Bennu's boulders are cracked, not porous as initially thought. This discovery transforms our understanding of how to interpret an asteroid's thermal properties from Earth-based observations.
Researchers at the University of Arizona ran simulations to predict how a large crater near Psyche's north pole could have formed, shedding light on its composition. The study found that porosity plays a significant role in crater formation, with implications for understanding Psyche's makeup.
The Small Magellanic Cloud's stars do not orbit around its center due to a direct collision with the Large Magellanic Cloud. The collision disrupted the SMC's internal structure and destroyed its gas rotation, making it a unique case to study galaxy evolution.
A new University of Arizona study found that exposure to certain pesticides before pregnancy is associated with lower Apgar scores, a measure of newborn health. The study suggests that pesticides can affect the next generation, highlighting the importance of regulating pesticide use to improve maternal and child health.
A new study led by University of Arizona researchers suggests that global vertebrate biodiversity has been significantly underestimated, with on average two unrecognized species for every recognized one. This finding could have consequences for conservation efforts if these hidden species are not properly identified.
A new study has found that astrocytes are crucial for aversive memory, including learning what to fear and recalling memories. The findings challenge long-held assumptions about fear memory and suggest new treatment approaches for disorders like post-traumatic stress disorder.
A study using the James Webb Space Telescope found that supermassive black holes can suppress star growth not only in their host galaxy but also in neighboring galaxies within a million-light-year radius. This discovery reveals a larger impact of quasars on galaxy evolution, contradicting previous assumptions.
A new study published in the Journal of Occupational and Environmental Medicine has identified clear occupational factors and demographic indicators associated with elevated serum levels of per- and polyfluoroalkyl substances among US career firefighters. The research provides vital insights into the factors that influence PFAS body bu...
A University of Arizona-led research team has measured the dynamics and ever-changing hot gas shell from where the solar wind originates. The study helps scientists answer fundamental questions about energy and matter moving through the heliosphere, affecting space weather events and planetary orbits.
Researchers will create a new modality called Phase Change Ultrasound Lymphograph to super-resolution map lymphatic structures, providing quantitative information on anatomy and function. The device aims to screen for lymphatic abnormalities and guide treatment decisions.
Researchers have found that teosinte-derived traits in corn can alter the relationship between plants and soil microbes, improving nitrogen cycling and potentially making corn production cheaper. By reintroducing these traits, modern maize becomes more sustainable.
Researchers at the University of Arizona have developed a copper-based compound that can kill MRSA bacteria by disguising itself as iron. The compound, BMDC, works by delivering a toxic dose of copper to bacterial colonies, making it an effective treatment against drug-resistant infections.
According to a University of Arizona-led study, scientists are discovering new species at a rate that far exceeds extinction. The team analyzed taxonomic histories of 2 million species and found an average of more than 16,000 new species each year, including insects, plants, fungi, and vertebrates.
Researchers at the University of Arizona developed a mesh sleeve that monitors leg movements using AI to detect early warning signs of frailty. The device sends only the analyzed results, reducing transmission and internet requirements.
Research reveals that single-celled organisms are among the first to colonize newly formed lava environments, thriving in scarce water and nutrient conditions. As diversity stabilizes over time, rainwater plays a critical role in shaping microbial communities, suggesting an unexpected link between weather phenomena and life on Earth.
A University of Arizona study found that most people who fill out the Patient Health Questionnaire (PHQ) are confused by its instructions, leading to inaccurate data. The study highlights a problematic phrasing in the questionnaire's instructions, which asks patients to indicate the frequency with which they've been bothered by symptoms.
A new study estimates climate change has reduced US income by 12%, with economic impacts felt nationwide due to regional trade connections. The research uses a novel approach to measure climate change's current economic force, providing insights for businesses and policymakers.
Astronomers discover galaxy Virgil with dual personality – ordinary in visible light but harboring massive black hole. JWST observations reveal hidden nature of Virgil, challenging current models of black hole formation.