A University of Arizona-led team found that rising sea levels during the Last Interglacial Period were primarily driven by melting ice sheets, rather than thermal expansion. The study suggests that even small amounts of warming may have committed to more ice sheet melting, and sea levels will continue to rise for a long time.
A team of biochemists at the University of Arizona discovered that disrupting a molecular process used by mosquitoes to direct proteins to their proper destinations causes more than 90 percent of affected mosquitoes to die within 48 hours of blood feeding. This approach could be used as an additional strategy in the worldwide effort to...
New research suggests that warming ocean layers surrounding the Greenland and Antarctic ice sheets will melt underwater portions faster than previously thought. This would increase sea level rise more than already projected.
A University of Arizona planetary scientist has determined Neptune's rotation with high accuracy by tracking atmospheric features in its atmosphere. The discovery improves upon previous measurements and provides a better understanding of the planet's fundamental properties.
The University of Arizona has been awarded a multi-million dollar contract to polish a 4.2-meter primary mirror for the Advanced Technology Solar Telescope in Hawaii. The mirror will be the world's largest solar telescope, allowing researchers to study the sun in unprecedented detail.
Researchers develop protocol using existing technology to measure and manipulate magnetic spin of electrons for spintronics applications. This breakthrough aims to overcome limitations of conventional computing devices, such as power consumption and data loss.
A new study published in Development and Psychopathology found that quality parenting skills by dads significantly reduces the incidence of risky sexual behavior in their daughters. The study, led by Bruce J. Ellis, showed that girls who receive lower quality fathering tend to engage in more risky sexual behavior in adolescence.
The Conservation Genetics Lab uses genetic techniques to identify inbred populations and introduce new genetic variation. They also apply this technique to endangered species in captive breeding programs and use DNA evidence to catch wildlife criminals.
The University of Arizona has received a $2.95 million grant to study the ecological processes influenced by the monsoon phenomenon. The five-year project will use advanced computer modeling approaches to understand how summer rains affect plant growth and spread invasive grasses, as well as explore connections between lower elevation ...
The OSIRIS-REx mission will explore the asteroid 1999 RQ36 for over a year, collecting pristine organic material that may have seeded life on Earth. The returned samples will provide geologic context essential to expanding our understanding of the solar system and likely organic molecules.
Researchers Anna Dornhaus and Benjamin Blonder found that ant colonies exhibit unique behavior, contradicting the assumption of universal properties in self-directed networks. The study recorded over 9,000 interactions between individual ants, providing insight into complex communication within the colony.
A UA study using economic models backed up by fMRI scans explores the neural bases of guilt aversion and its role in sustaining human cooperation. The findings suggest that a critical neural system processes moral sentiments to sustain trust and reciprocity in complex situations.
Researchers study sea squirts' simple body structure to unravel complex mechanisms of heart formation, shedding light on GATA's role in congenital heart defects. Disrupting GATA function independently in the developing gut preserves heart cell identity, while disrupting it in heart precursor cells causes limbo-like state.
Research from the University of Arizona found that bacteria in the genus Rickettsia can rapidly evolve whiteflies, making them more likely to survive and reproduce. The bacteria manipulate sex ratios, causing more female offspring to be born, which is unusual for such a short period.
Scientists discovered minerals requiring liquid water for formation in comet Wild-2, shattering the current paradigm that comets are frozen in time. The discovery provides evidence of a warm water phase and puts an upper limit on temperatures encountered by the comet during its origin.
A University of Arizona-led research team found that wind can be up to 100 times more effective at eroding mountains than previously thought. The study suggests that wind played a key role in shaping the Loess Plateau, with over half of its dust coming from the Qaidam Basin.
Experimental philosophy offers a new perspective on the debate over free will and determinism, testing whether our decisions are influenced by causal chains or our own agency. Researchers have found that young children and adults exhibit conflicting responses to scenarios involving free will and moral responsibility.
The Cassini spacecraft has observed methane rain on Titan's equatorial deserts, revealing the first current evidence of rain soaking Titan's surface at low latitudes. This finding suggests that recent weather on Titan is similar to Earth's tropical regions.
Researchers found that graphene's electronic properties were significantly improved when mounted on boron nitride, a material almost identical in structure to graphene. The team was able to measure the topography and electrical properties of the resulting smooth graphene layer with atomic resolution.
Researchers studying plant growth discover that universal features exist across various natural systems, including plants and animals. Alan Newell's work focuses on the mathematical models capturing these similarities.
Scientists have found that the sand dunes in a vast area of northern Mars are changing with both sudden and gradual motions, contrary to previous assumptions. The changes were caused by seasonal carbon-dioxide ice and stronger-than-expected gusts of wind, resulting in sand avalanches and erosion.
Researchers at the University of Arizona have created a sophisticated experimental setup to measure the interactions between single atoms and surfaces. The technique refines our understanding of the van-der-Waals force, which is crucial for chemistry, biology, and physics.
Researchers Joanna Masel and Etienne Rajon found that tiny populations evolve global solutions to prevent errors, while large populations rely on local solutions to tolerate mistakes. This discovery reveals the importance of 'cryptic variation' in natural selection, allowing organisms to adapt to new challenges.
Researchers have successfully created a metal-methane hybrid molecule by inserting metal atoms into methane gas molecules, potentially advancing industrial hydrocarbon chemistry. This discovery could lead to the creation of more complex and valuable products from simple compounds like methane.
Researchers at the University of Arizona have developed a way to deliver chemotherapeutic drugs to cancer tissues in controlled doses without harming healthy body cells. The gold-coated liposomes can target specific receptors on tumor cells, allowing for more effective treatment and reduced side effects.
A new study suggests that a 60-year drought like the one in the 12th Century could occur in the Southwest, with devastating impacts on ecosystems and water systems. The team analyzed past temperatures and droughts to identify plausible worst-case scenarios, highlighting the need for improved water management planning.
A new data-driven statistical model incorporating the surrounding landscape, pollinating insects, and human seed dispersal accurately predicts gene flow between crop plants. The study finds that human farming activity has a significant impact on gene transfer rates, while the influence of pollinators is relatively small.
Researchers have identified a miniature ecosystem consisting of a plant and a tiny fly that spends its entire life cycle on the plant. The discovery provides a model system for studying plant-insect interactions on a genetic and molecular level.
Researchers have developed a mathematical model that predicts relationships among leaf functions based on three properties of the vein network: density, distance between veins, and number of loops. The study indicates that plants with denser vein networks can absorb more carbon while withstanding higher levels of water loss.
The University of Arizona is receiving $2.9 million to improve the safety and post-harvest quality of field-grown organic leafy greens. Researchers will test edible films, compost teas, and irrigation water for bacterial contamination, aiming to provide safer products for consumers while increasing profitability for growers.
Researchers at the University of Arizona have developed a novel approach to controlling pink bollworm pests in cotton fields. By combining pest-resistant cotton with the controlled release of sterile moths, they have virtually eliminated the pest from Arizona, allowing growers to maintain high yields without spraying insecticides.
A team at the University of Arizona has developed a new type of holographic telepresence that can project three-dimensional, moving images in real-time. This breakthrough technology enables applications such as telemedicine, advertising, and entertainment to take on new levels.
Mutualist systems may play crucial roles in global ecosystem health, but human impacts are forcing them down unprecedented evolutionary paths. Research suggests that small changes or shifts in mutualistic relationships could be the most potent global disruptions.
Using new optics technology developed at the University of Arizona's Steward Observatory, astronomers have obtained images of a planet on a closer orbit around its parent star than any other extrasolar planet previously found. The discovery enables scientists to search for planets closer to the star than has been previously possible.
AUA-led team finds complex organic molecules, including amino acids and nucleotide bases, in Titan's atmosphere. These findings suggest that Titan's atmosphere could be a reservoir of prebiotic molecules that serve as the springboard to life.
Physicists at the University of Arizona have developed a new way to convert waste heat into electrical power using quantum physics. The technology holds great promise for making various devices more efficient and reducing ozone-depleting chemicals.
A University of Arizona research team found that digital coupons are often difficult to use due to technical issues with redemption and cashier knowledge. The study suggests that a more convenient and user-friendly experience is needed to make digital coupons successful.
Researchers have discovered that a precursor to the AIDS-causing HIV is at least 32,000 years old, contradicting previous estimates. The study suggests that HIV's evolution into a non-lethal form is unlikely due to its rapid virulence.
Research reveals that glaciers in cold climates protect mountain tops and sides from erosion, allowing them to grow higher. By analyzing rocks exposed on remote glaciers in Patagonia, scientists found that the protective effect of glaciers reverses the conventional view of them as powerful agents of erosion.
Measurements by NASA's Phoenix Mars Lander suggest that liquid water has primarily existed at temperatures near freezing on Mars, implying hydrothermal systems similar to Earth's hot springs are rare. The findings provide new light on Mars' history of water and volcanic activity.
Roger Angel will receive the Kavli Prize for his pioneering work on telescope design, which has allowed astronomers to observe distant and ancient objects. His innovative approach has resulted in lightweight and rigid mirrors that can be used in larger telescopes, enabling more compact and cost-effective designs.
A new University of Arizona study found that even complete strangers can infer a person's emotional state from just 30 seconds of conversation. Verbal snippets, such as tone and language use, provide significant insight into how people are coping with separation and divorce.
A University of Arizona-led consortium aims to create next-generation varities of rice that can withstand drought and poorer soils. The project will study the genes of wild rice species and identify those that could improve crop yields, providing a 'toolkit of genes' for enhanced food security.
Researchers at the University of Arizona have developed a battery of computer-based tests that can quickly assess cognitive abilities in individuals with Down syndrome. The tests, which take about two hours to administer, offer a new tool for clinicians and researchers to determine developmental trajectory and devise drug and behaviora...
A team of astronomers from the University of Arizona developed a technique called laser adaptive optics, allowing for sharper images and faster data collection. This technology will enable scientists to study ancient galaxies and star clusters more efficiently.
Astronomers have discovered a brown dwarf companion to a young sun-like star, PZ Tel A. The discovery reveals the early stages of solar system formation and provides insights into planetary formation.
Researchers successfully engineer mosquitoes immune to malaria parasite, rendering them ineffective vectors for human infection. The breakthrough has significant implications for global health, with an estimated 1 million fatalities annually due to the disease.
Researchers at University of Arizona successfully created nitrogenated organic molecules in a laboratory setting that mimics Titan's atmosphere. The findings suggest that complex organic molecules could be present on Titan, potentially creating conditions conducive to life.
Researchers recommend using water conservatively and developing ways to harness energy from the sun, wind, and Earth to cope with projected climate changes in the West and Southwest. The region is expected to experience widespread drought, wildfires, and decreasing snowpack.
Two University of Arizona studies find that loneliness is a matter of perception and can be linked to poor health. Stress serves a crucial function for lonely individuals, who tend to have fewer close connections and manage daily stressors poorly.