New research from the University of Arizona contradicts the Toba catastrophe hypothesis by showing no significant negative impact on vegetation growing in East Africa after the 74,000-year-old volcanic eruption. The study found some die-off of mountain plants just after the eruption, but no massive die-off of vegetation at all elevations.
Researchers at the University of Arizona used a novel technique to observe electrons moving through crystals, shedding light on the unique properties of transition metal dichalcogenides. The study revealed that electrons move differently within and across layers, with implications for future processing technologies.
The study found that extreme weather events worldwide coincided with the temperature spike, and natural variability in the climate system was not sufficient to explain it. Researchers projected that record-breaking temperature jumps and accompanying extreme weather events will become more frequent unless greenhouse gas emissions decline.
A new study by researchers at the University of Arizona found that people with high levels of biospheric concern are more likely to experience stress and depression due to climate change. Those who show concern for the environment, animals, and plants tend to have a planetary outlook and think about bigger picture issues.
Researchers found that increased fluctuations in the jet stream's path since the 1960s coincide with more extreme weather events, including heat waves, droughts, wildfires, and flooding. The study used tree ring data to reconstruct historical changes in the North Atlantic jet stream prior to the 20th century.
Researchers found that language learners prefer word orders with shorter dependencies, which are easier to process, suggesting a causal link between human cognition and language structure. This discovery provides new insights into the role of human information processing in shaping linguistic universals.
A new study projects that groundwater recharge will increase in the northern US and decrease in the south as climate change takes hold. The research used global climate models and found varying effects across different hydro-climatic regions, highlighting the need for better management and policy.
A new study from the University of Arizona finds that people with poor social skills are at greater risk for mental and physical health issues due to increased stress and loneliness. Social skills training has shown to be effective in improving these skills.
Researchers at the University of Arizona found that even with perfect natural selection, aging would still occur due to cancer cells cheating the system. Slowing down one type of cell can lead to an increase in another problematic cell type, making it mathematically impossible to halt aging.
A team of scientists at the University of Arizona has discovered that a newly evolved yeast protein can fold into a compact three-dimensional structure, contrary to the long-held assumption that such proteins are incomplete and 'works-in-progress',
A team of University of Arizona researchers has discovered that a previously thought to be small turquoise mine was actually a significant source of the mineral, producing 25% more turquoise than previously estimated. The study uses both archaeology and geochemistry to gain a complete picture of operations at the mine.
A global assessment reveals that genetically engineered crops producing insect-killing proteins from Bacillus thuringiensis have led to a fivefold increase in pest resistance cases over the past decade. However, some pests remain suppressed due to factors such as recessive inheritance of resistance and abundant refuges.
Researchers found that climate in northeast Africa shifted from wet to very dry around 70,000 years ago, coinciding with human migration out of Africa. The team's analysis of sediment cores revealed a significant drop in sea surface temperature and rainfall patterns, making the environment less hospitable for human habitation.
Researchers discovered mushroom bodies in mantis shrimp brains, a structure previously only found in insects. The findings suggest that these complex structures may have evolved early in the evolution of all arthropods.
A study led by the University of Arizona found that dogs with leash aggression had higher levels of total vasopressin, while those without exhibited higher oxytocin and oxytocin-to-vasopressin ratios. This supports the idea that oxytocin may help inhibit aggression in dogs.
A University of Arizona study finds that when one parent handles conflict destructively, children feel more emotionally insecure. Parents who argue constructively create a more stable home environment.
A study found that a significant portion of ants spend most of their time idle, serving as a reserve labor force. When the top workers are lost, these inactive ants increase their activity levels to replace them, ensuring colony survival.
A new study reveals that electromagnetic radiation from the Crab Nebula may originate in a single population of electrons, challenging traditional models. This suggests that a different acceleration process is needed to explain the entire electromagnetic spectrum.
The University of Arizona is conducting a Phase 2 trial to determine whether the peptide angiotensin 1-7 can mitigate or reverse cognitive deficits after bypass surgery. The trial involves administering the compound before and after surgery, with participants undergoing regular tests to evaluate their memory.
The University of Arizona Center for Integrative Medicine launched an online curriculum to train family medicine residents in integrative medicine. The 200-hour program improved residents' medical knowledge and clinical utility, with a high completion rate despite busy schedules.
A study by Justin Knoll found that individuals with a high tolerance for incivility are more likely to engage in online behaviors such as commenting on news stories, participating in discussions, and donating to candidates. In contrast, activities like signing petitions and circulating content were not affected.
Astronomers have caught a cosmic event in great detail, observing a supernova and its explosive ejecta slamming into a nearby companion star. The discovery was made possible by a specialized survey taking advantage of recent advances in linking telescopes across the globe.
A new study by University of Arizona sociology doctoral student Morgan Johnstonbaugh found that US lawmakers' tweets are more closely tied to their political party affiliation than their gender. Contrary to expectations, women did not tweet significantly more about stereotypically female issues and men did not tweet more about male-ste...
Researchers found that puppies raised by doting mothers were less likely to succeed in a training program to become guide dogs. The study suggests that guide-dog-training organizations can better identify dogs who are more likely to succeed by understanding the impact of maternal style on offspring behavior.
Researchers found that North American monsoon storms are becoming more extreme, with heavier rain and stronger winds, while their frequency is decreasing. The study, led by the University of Arizona, used historical climate data to verify the findings.
A team of UA astronomers proposes a scenario that reconciles observed disk features and the population of planets in our galaxy. They simulated protoplanetary disks using synthetic observations to account for the formation of multiple gaps, challenging conventional theories.
A new study from University of Arizona scientists has analyzed Greenland's past temperatures to better understand the island's vast ice sheet melting. The research found that current temperatures are warmer than the 1930s, with a long-term trend for ever-higher surface temperatures.
Researchers discovered that bumblebees use two distinct behaviors to collect pollen from flowers: scrabbling when pollen is abundant and sonication when it's scarce. By analyzing chemical and mechanical cues, the team found that bees switch between these motor regimes depending on their environment.
Researchers propose adaptive capacity model to understand exercise-brain connection, suggesting physical activity impacts brain structure and function from evolutionary history as hunter-gatherers. Exercise may enhance cognitive abilities and prevent age-related decline or neurodegenerative diseases like Alzheimer's.
A new study has found evidence of a yet-to-be-discovered planetary body with a mass between Mars and Earth, warping the orbital planes of Kuiper Belt objects. The object's presence is suggested by its control over the tilt angles of KBOs' orbital planes, indicating a gravitational influence comparable to that of Mars.
A recent study led by the University of Arizona found that trust is significantly influenced by genetics, while distrust appears to be primarily socialized. The research suggests that trust and distrust are distinct qualities, with genetics playing a more significant role in shaping trust behaviors.
Physicians' adherence to H. pylori guidelines is low, with only 58% checking for eradication after treatment. A higher proportion of physicians are treating patients after a positive test, but antibiotic resistance remains a concern.
Millions of people with diabetes are at risk of developing foot ulcers, which can lead to further complications like strokes and premature death. Focusing on ulcer remission is crucial in delaying these complications and improving patient outcomes.
Researchers warn that building hundreds of hydroelectric dams in the Amazon River Basin will cause massive environmental damage, affecting nine countries and the entire system. The Amazon Basin's unique ecosystem and biodiversity are at risk due to the dams' impact on sediment flow, regional climate, and food supply.
A new study suggests that bouldering may be used to effectively treat symptoms of depression, with participants who immediately began the intervention showing a 6.27-point improvement in depression scores compared to those who waited, improving from moderate to mild depression levels.
Research by University of Arizona professor Jake Harwood and collaborators found that listening to music from other cultures improves intergroup attitudes. The study showed that individuals who listen to music produced by outgroup members experience a humanizing effect and reduce negative feelings towards those groups.
A new study by University of Arizona researcher Russell Toomey found that LGB-specific strategies promote health and reduced likelihood of dropping out of high school. Cognitive and alternative-seeking strategies were associated with poorer adjustment, depressive symptoms, and lower self-esteem.
A new study by University of Arizona researchers found that virtual reality support groups can be an effective tool for older adults dealing with grief and depression. Participants showed improvements in stress, loneliness, and sleep quality, but only those in the virtual reality group reported a reduction in symptoms of depression.
A study published in the Proceedings of the National Academy of Sciences reveals that interbreeding genetically engineered cotton with non-Bt cotton can delay and even reverse evolution of resistance by pests. This novel strategy involves planting a mix of Bt and non-Bt seeds, which generates a random mixture of plants within fields.
A study of 109 separated or divorced individuals suggests that narrative expressive writing can lower heart rate and increase heart rate variability, both indicators of good cardiovascular health. By creating a structured story around their feelings, participants were able to process emotions in a more physiologically adaptive way.
AUA trauma surgeon Dr. Gary Vercruysse reports an increase in e-cigarette-related burns, highlighting the dangers of lithium-ion batteries. The study suggests that thermal runaway can cause internal damage to batteries, leading to explosions and severe burns.
Researchers found that new genes are more likely to appear in full form rather than gradually evolving through proto-genes. This is because non-coding DNA sequences give rise to highly ordered proteins, which are often deleterious to the organism.
A study from the University of Arizona found that reminding people of their mortality increases their willingness to kill animals. The researchers used terror management theory, which suggests that humans use self-esteem as a buffer against fear of death. When participants received a self-esteem boost, the effect of the death prime was...
Researchers at University of Arizona discover diffuse hydrogen gas surrounding Milky Way, accounting for large part of galaxy's baryonic mass. This finding confirms predictions from simulations and provides new insights into the nature of dark matter.
A study published in Neurobiology of Sleep and Circadian Rhythms found that sleep-deprived individuals struggle to recognize subtle facial expressions of happiness and sadness. However, their ability to identify more primitive emotions like fear and anger remains intact.
Researchers found that CEOs with moderate social capital are most likely to voluntarily step down from a failing company. In contrast, those with high or low social capital are less likely to quit due to the potential consequences of their actions on their reputation and job prospects.
Researchers at the University of Arizona have developed a promising method to prevent aflatoxin contamination in crops, which could improve food security in developing countries. The transgenic corn plants produce small RNA molecules that suppress toxin production when infected with a fungus.
A study by Adriana Zuniga-Teran found that traditional neighborhoods encourage more walking, while suburban developments with green spaces contribute to improved mental well-being. Cluster housing communities also foster social interaction among residents. In contrast, enclosed gated communities do not improve feelings of safety.
A novel non-pharmacological approach using green LED has shown promising results in treating neuropathic pain in rats with no side effects observed. The therapy may work by increasing levels of endogenous opioids, which inhibit pain and decrease inflammation.
Studies suggest that dogs and humans share a common type of social intelligence, which could help scientists better understand human evolution. Researchers found that dogs who excel in one social skill tend to perform well in related skills, similar to children, but not chimpanzees.