Global ozone decline since the 1970s persists, with unexpected decreases in lower stratosphere preventing recovery at lower latitudes. Scientists point to climate change and short-lived substances as potential causes.
Researchers identified powerful antimicrobial agents in some ant species but found that many others don't produce them, challenging conventional wisdom. The study suggests ants could be a future source of new antibiotics to fight human diseases.
A team of researchers from Case Western Reserve University School of Medicine has used cryo-electron microscopy to capture the structure of full-length serotonin receptors for the first time. This breakthrough provides valuable insights into molecular binding sites that could lead to more precise drug design and targeted therapies.
A new study found that medical marijuana dispensaries are associated with lower rates of opioid overdose deaths, but only in states with loosely regulated dispensary systems. The association declined sharply after 2010 as state laws became more tightly regulated and the opioid crisis shifted to heroin and fentanyl.
Pennsylvania has developed effective ash-management plans to combat the emerald ash borer, which offers a model for other regions. The plans include tree inventory, monitoring, management tools, and education, tailored to each community's conditions and goals.
Scientists at Tata Institute of Fundamental Research and Rutherford Appleton Laboratory discovered that electrons traveling faster than light in glass live much longer than expected, lasting over 2000 times longer than the exciting laser pulse.
Researchers at Hokkaido University identified a key process enabling Ebola virus entry, targeting antiviral drug development.
Researchers at James Cook University found that a new technique, Category Cluster Recall (CCR), improves eyewitness recall compared to traditional free recall methods. Using CCR, witnesses were prompted to remember specific details in categories, resulting in more accurate and detailed information being recalled.
Researchers at Michigan Technological University developed a new cyanine dye that can work in water and exhibits fluorescence in acidic conditions. The dye has multiple benefits, including dual fluorescence under near-infrared and visible light, making it suitable for biomedical research.
Researchers have developed a novel technology platform to genetically modify phage genomes systematically, providing additional functionality. The new phage workbench allows for the creation of custom bacteriophages with various functions, overcoming constraints associated with naturally occurring phages.
New virus-cracking molecules can disrupt viral capsid assembly, preventing replication and killing new copies of the virus. This breakthrough could lead to better treatments against multiple viruses, including polio and herpes.
Researchers at Aalto University found major deficiencies in ageing tests of perovskite and dye-sensitized solar cells. Most tests lacked common standards, were performed in dark conditions, or reported insufficient data.
Researchers at the University of Cambridge discovered that schooling fish groups exhibit different collective behaviors, with some showing better coordination and leadership than others. The study found that individual group members differ consistently in their behavior, influencing group performance and survival.
Researchers from Sun Yat-Sen University have developed a new type of optical ceramic material using metal-organic frameworks, which can be transparent or optically clear. The material has been shown to have high optical transmittance and can be used for applications such as lasing gain medium and amplified spontaneous emission.
Researchers quantify viruses swept up into free troposphere, carried thousands of km before being deposited back onto Earth. The majority of viruses were found to have originated from sea spray, indicating long-range transport through the atmosphere.
Scientists have reconfigured porphyrins to exploit their special properties by 'turning them inside out'. This discovery opens new horizons for these natural pigments as efficient metal-free catalysts. The findings could lead to applications in chemistry, biochemistry, physics and beyond.
Researchers at Oregon State University found that symptoms of alcoholism make it difficult for patients to take naltrexone, a medication approved to treat alcohol use disorder. The study suggests that ongoing daily contact with the patient is crucial to improving adherence, particularly after heavy drinking episodes or strong cravings.
Researchers studying water quality around hydraulic fracturing found a blueprint for moving conversations forward through publicly available data and collaboration. The Shale Network has fostered dialogue among diverse stakeholders, including citizens, watershed groups, and energy companies.
Researchers found that the Moon's excessive equatorial bulge formed slowly over four billion years ago as it receded from Earth. The study suggests a weaker young Sun may have enabled this process, with implications for our understanding of Earth's early energy dissipation.
A study published in PLOS Medicine found that resistance to azithromycin and ceftriaxone in China is increasing, threatening the effectiveness of dual therapy for gonorrhea treatment. The prevalence of dual resistance rose from 1.9% in 2013 to 3.3% in 2016.
Scientists have developed a new method to rank the risk of resistance genes in bacteria, allowing for better prediction of antibiotic evolution and development. By analyzing 200 genes, researchers identified key factors influencing gene transfer and integration into new hosts.
Researchers developed water-splitting catalyst made of nickel and iron, but uncertainty remained about its mechanism. New study reveals iron performs water-splitting reaction, not nickel, paving the way for improved catalysts.
A study published in JAMA found that patients with a patent foramen ovale (PFO) are at increased risk of stroke after non-cardiac surgery. The researchers analyzed data from over 150,000 patients and found that approximately 3.2% of those with a PFO experienced a stroke within 30 days, compared to 0.5% without one.
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 developed a new model to characterize ice accumulation on aircraft wings, including mixed ice forms and their effects on adhesion characteristics. The study aims to improve understanding of thermally active nanocoatings to combat ice formation.
Researchers developed a social emotion mining computer model that predicts the right ordering among six Facebook emoticons in terms of votes. The new robust label ranking model outperforms existing solutions and can help social media managers and advertisers analyze their content more accurately.
BurstCube will detect gamma-ray bursts caused by massive star collapses and neutron star mergers, as well as solar flares. The mission uses miniaturized detector technology to study these high-energy events and their origins.
A new study reveals that northern permafrost soils store nearly twice as much mercury as all other soils, the ocean, and the atmosphere combined. The discovery has significant implications for understanding the global mercury cycle and potential environmental consequences of thawing permafrost.
AWI researchers found that temperature variability during glacial periods was not uniform worldwide, with intense variations in the Tropics but less so in other regions. The study used a unique global comparison of data from core samples to improve predictions for future climate change.
A team led by Chang-Beom Eom at the University of Wisconsin-Madison has directly observed a two-dimensional hole gas, a counterpart to the two-dimensional electron gas. The discovery is crucial for advancing oxide electronics materials, which could enable new concepts and applications in fields like computing and communication.
A study by the University of Waterloo found that mixed-use developments in Toronto neighbourhoods led to increased costs and reduced social diversity, disproportionately affecting low-income groups. The study suggests that good policy, such as inclusionary zoning and affordable housing trusts, is needed to address these issues.
A study suggests that early Neanderthals in southern Tuscany used fire to create digging sticks and shape wooden tools. The site's fossil bones and cut marks indicate a high level of technical expertise in toolmaking, dating back to around 171,000 years ago.
Scientists at USC Loker Hydrocarbon Research Institute have developed a more efficient pathway for converting methane into basic chemicals. The new catalyst, H-SAPO-34, converts methane directly into ethylene and propylene, reducing greenhouse gas emissions and replacing traditional processes.
A study has identified five novel genetic variants associated with attention-deficit/hyperactivity disorder (ADHD) that also influence educational attainment. The findings suggest a shared genetic basis between the two conditions, which may contribute to academic underachievement in children with ADHD.
Research led by the Universities of Leicester and Edinburgh reveals that surface ozone levels are detrimental to human health, with increasing levels in East Asia. The study analyzed data from over 4,800 monitoring stations worldwide, showing a decrease in ozone levels in Europe and North America but an increase in East Asia.
Researchers discovered that a mutation in the C9ORF72 gene causes toxicity in nerve cells, leading to ALS and FTD. By reprogramming blood cells into motor nerve cells, they found that adding supplemental protein could stop degeneration, highlighting potential new drug targets.
Microplastics in soils and freshwaters can have damaging effects on ecosystems, triggering adverse reactions in organisms and potentially disrupting hormone systems. Humans also ingest microplastics through food, highlighting the need for reliable data on microplastic degradation and effects.
Researchers have found that the loss of a tumor suppressor in triple-negative breast cancer provides clues for novel treatments. Drugs targeting PLK1, AURK and CHK1 may be effective for 20-30% of patients with RB-deficient tumors.
Researchers identified natural compounds that repel fire ants by activating a type of ion channel highly expressed in the insect's antennae and legs. These compounds, including one found in cinnamon, were found to be less effective at activating the fire ant version of this channel compared to honey bees.
A study by Jessica Ridgway found that viewing oneself as a 3-D avatar can lead to negative psychological consequences, including decreased mood and body satisfaction. Self-discrepancy theory explains why this is the case.
A recent study found that 37% of ACOs have a management partner, who provides essential services such as data analysis, administrative support, and care coordination. These partnerships enable smaller organizations to participate in ACOs and improve quality, with management partners also providing financing and acting as 'ACO-enablers'
Researchers at University of Utah Health identified a mechanism that activates T cells, a key component of the immune system, in patients with persistent Lyme arthritis. This activation mechanism triggers inflammation and arthritis by producing inflammatory molecules that accumulate around the joints.
A new study from Ohio State University found that women whose family members or friends died of cancer are more likely to approach breast cancer prevention aggressively. Women with traumatic experiences perceive breast cancer as a death sentence, while those with positive experiences see it as a hardship that can be overcome.
Scientists identified a calcineurin variant CnAβ1 that reduces cardiac hypertrophy and improves heart function by preserving mitochondrial ATP production. This study may lead to new treatment strategies for conditions like aortic stenosis.
Research suggests that an aging immune system may be a stronger reason for age-related cancer risk increase than previously thought. The study found a strong correlation between declining T cell production and increasing cancer incidence in both men and women.
A new study reveals that the collapse of the Laurentide Ice Sheet in North America approximately 16,000 years ago led to significant climate variations in West Antarctica and the tropical Pacific. The research suggests a previously undocumented inter-polar climate change mechanism.
Research found that women with estrogen receptor-negative breast cancer had an increased risk of preterm birth and low birth weight compared to those with other types. The study also showed a lower birth rate among breast cancer survivors, with only about 8% having children by 10 years after diagnosis.
Scientists found little evidence of negative impact from two major mass extinctions on ray-finned fishes, with no significant changes in body shape or jaw shape. The group's remarkable modern diversity is attributed to 400 million years of evolution.
A statistical analysis found that most Legionnaires' disease cases in Flint can be attributed to the city's switch to the Flint River water source. The study also identified a specific strain of Legionella isolated from Flint residences that is not easily detectable by common diagnostic tests.
Researchers discovered that disabling the Bsr-k1 gene in rice plants boosts their resistance to multiple diseases without compromising grain yield or weight. This breakthrough has significant implications for breeding disease-resistant rice varieties.
A study by researchers at the Higher School of Economics found that only 2.4% of Russian companies have corporate universities, compared to 28% in Europe. Investing in a corporate university may not be sustainable in the long-run and can create risks for companies.
Research analyzes earthquake sequences in eastern Ohio from 2013-2015, finding that hydraulic fracturing increases seismic hazard with maturity of activated faults. Deep earthquakes tend to be larger and persist after HF ceases, suggesting a long-term impact on seismic hazards.
A new veterinary medical ethics committee has been developed at North Carolina State University to aid caregivers in navigating complex care situations. The committee, consisting of seven members, operates independently from the hospital's academic and business aspects to provide a fair and open discussion of ethical issues.
Children born prematurely make fewer friends and are less accepted by peers in early childhood, but improve as they enter school. Interventions can help social interaction skills before school age to prevent later problems.
A 29-year study on cover crops and no-till cotton fields found that cover crops offer benefits in the long term, even if they reduce short-term profits. The research team analyzed data from a unique 29-year period to determine the economic impact of cover crops.
A team of scientists from UC Davis used the ising model to study pistachio tree synchronization, finding that magnetic connections between trees can explain their synchronized behavior. The study, published in PNAS, provides new insights into ecological systems and their effects in natural and managed environments.
The Tomato Expression Atlas provides a comprehensive map of gene expression across all tissues and developmental stages of the tomato fruit. This database offers unprecedented spatiotemporal resolution and interactivity, enabling researchers to investigate biological processes important for fruit development.
Researchers discovered a protective mechanism in the immune system that shields against recurrent bacterial skin infections caused by Staphylococcus aureus. Gamma delta T cells, which account for less than 1% of lymph node cells before infection, multiply and provide protection against subsequent infections.
Researchers have shed new light on the TRAPPIST-1 planetary system, revealing that all seven planets are mostly made of rock and contain up to 5% water. The study also found that five planets lack a hydrogen-dominated atmosphere, similar to Neptune or Uranus.
A study using Avida-ED curriculum found that students who used the digital evolution software improved their understanding of evolutionary principles, including variation, randomness, and natural selection. The tool also increased acceptance of evolution among students, suggesting it could be an effective educational tool.