Researchers at a high-altitude research station in Switzerland used state-of-the-art instruments to study new particle formation and its role as cloud condensation nuclei. They found that highly oxygenated organic compounds contribute to nucleation for a short window after vertical transport from the planetary boundary layer.
A study suggests that amyloid-ß peptide can ensnare invading microbes, halting infection in mouse and worm models of Alzheimer's disease. Researchers also found that mice with overexpressed amyloid-ß showed greater resistance to bacterial infection.
Researchers identified a specific enzyme and signaling pathway involved in resistance to treatment, which can be targeted by other drugs for improved outcomes. Glioblastoma multiforme tumors were shown to manipulate their surrounding environment to evade therapy, leading to longer survival when treated with combination therapies.
Researchers developed a bio-inspired robot that uses electrostatic forces to perch on different surfaces, reducing energy costs and increasing mission durations. The robot can resume flight after perching, making it suitable for applications such as surveying or detecting hazardous chemicals.
Researchers have identified a free radical as the key mechanism behind methane production in bacteria, resolving decades of controversy. This finding sets the stage for developing new technologies to harness and generate methane for energy purposes.
Cities around the world are exploring innovative ways to reduce their carbon footprint, from solar panels on buildings to optimized transportation systems. Researchers propose various strategies to improve water management, food supply chains, and air quality in urban areas.
A recent study found that broad-spectrum antibiotics can raise the risk of complications from stem cell transplantation, including graft-versus-host disease. The study suggests that selecting antibiotics that spare
Climate change causes red knot birds to shrink and develop shorter beaks, limiting access to high-quality food sources. This can lead to reduced survival rates among birds born in warm Arctic years, according to a 33-year study.
A new study in mice shows that REM sleep is essential for consolidating both contextual and emotional memories. Inhibiting theta oscillations during REM sleep kept mice from forming these memories, while disrupting them outside of REM sleep had no effect.
A new study in Sierra Leone found that short reconciliation ceremonies helped communities recover from civil war, increasing trust and public goods contribution. However, the process also had negative effects on individuals' anxiety and depression, suggesting policymakers need to restructure such processes to reduce psychological costs...
High-resolution measurements from NASA's Magnetospheric Multiscale (MMS) mission have provided new insights into the reconnection process of Earth's magnetic field lines. The results suggest that this process is driven by electron-scale dynamics, shedding light on the complex interactions within magnetized plasmas.
Researchers found that tau tangles are a better indicator of dementia in late-stage Alzheimer's disease, correlating with cognitive deficits and cerebrospinal fluid tau levels. PET imaging also showed stronger associations between tau deposits and amyloid plaques than previously thought.
Fossil analysis reveals that a cooler period after the Eocene-Oligocene transition (EOT) significantly impacted Asian primate evolution, favoring lemur-like strepsirrhine primates. In contrast, Afro-Arabia fossils show anthropoid diversification during this time.
Researchers found that a potent antibody can evoke a strong immune response in humans and accelerate the clearance of infected cells. The study revealed that administering this antibody to HIV patients can lead to a significant reduction in viral loads.
A team of researchers developed a CRISPR-based technique to rapidly identify gene variants, improving efforts to map genes and determine their function. The method induces mitotic recombination, allowing for detailed mapping of trait variants, as demonstrated by identifying a genetic mutation affecting yeast sensitivity to manganese.
Researchers found that moderate floods have a significant impact on river shaping, increasing erosion rates. However, extreme floods have limited additional effect on channel geometry, suggesting that landscapes can stabilize over long-term climate shifts.
Researchers developed a supervised autonomous robot that excelled in open bowel surgery on pigs, potentially reducing complications and improving surgical outcomes. With further development, autonomous robotic surgery may take human error out of the operating room, benefiting patients undergoing soft tissue surgeries.
Research identifies 14 core gut microbes found in over 95% of people, with certain species linked to diseases like ulcerative colitis and colorectal cancer. Analysis also reveals correlations between microbiome composition and diet, as well as the impact of medications and antibiotics on the gut microbiota.
A recent study on Sci-Hub usage reveals that the site's millions of users are scattered across the globe, with significant activity detected in China, India, and Iran. The study also highlights the unintended consequences of Sci-Hub's illegal paper acquisition methods, including the impact on libraries and scientific communities.
A new study reveals that reptiles, like mammals and birds, experience REM and slow-wave sleep patterns. This discovery suggests a common ancestor for these sleep states, evolving over 300 million years ago in amniotes.
Researchers have identified nine chemical compounds that can transform human fibroblasts into cardiomyocyte-like cells, which can then be used to partially heal damaged hearts. This breakthrough could lead to new avenues for cardiac regenerative therapies.
A cancer drug has improved learning and memory in mice with fragile X syndrome by coaxes neural stem cells to generate neurons critical for cognitive function. The treatment targets the MDM2 enzyme, which is overactive in FMRP-deficient cells, leading to enhanced proliferation but reduced differentiation.
Analysis of a new fossil suggests that giant dinosaurs like Rapetosaurus krausei were born with adult-like body proportions, allowing for early independence. This finding implies that parental care was less crucial for these species compared to others.
A recent study identifies a genetic locus, HMGA2, linked to beak size adaptation in Darwin's finches. The research supports the concept of ecological character displacement, where species diverge in traits when competing for resources.
Scientists have discovered a nearby supernova's ash continuing to fall on Earth, with rare iron-60 isotope detected in cosmic rays. The findings suggest another supernova occurred near the previous one, contributing to the ongoing acceleration of these nuclei.
A new study by Janet Currie and colleagues reveals a decline in mortality inequality among poor children up to age 20, with improvements most pronounced in poorer counties. This finding suggests that the life expectancy gap is likely to continue decreasing as younger generations form the future US population.
A new study reveals an unconventional antibody that targets the patient's vascular response to sepsis, converting a harmful protein into a protective one. This approach stabilizes blood vessels, strengthens barrier function, and quells systemic inflammation, prolonging survival in mice with sepsis.
A new study projects severe reduction in thermal tolerance for Great Barrier Reef corals, leading to increased coral bleaching. The research found that near-future temperature increases may result in loss of protective mechanisms, resulting in dramatic increase in coral bleaching events.
A new study found that parasites resistant to atovaqueone cannot pass this resistance on to their offspring, due to developmental defects and impaired reproduction. The research suggests that these mutations severely impair the parasite's lifecycle in mosquito hosts, preventing transmission.
Parasitic worms, or helminths, have been found to beneficially influence the composition of gut microbiota in individuals with inflammatory bowel disease. By infecting mice deficient in a gene that models Crohn's disease, researchers discovered that these parasites restore a compromised layer of mucus and intestinal cell morphology.
A recent mouse study found that antioxidants in certain antidiabetic medications can accelerate the spread of colon and liver cancer. The findings suggest that these medications, which are commonly used to treat diabetes, may not be safe for diabetic patients with cancer.
Researchers tested Zika virus in human neural stem cells to understand its effects on developing brains. The study found that the virus preferentially killed brain cells, reducing growth by 40% in a brain organoid model.
This special issue on cancer metastasis features groundbreaking research on tumor development, spread, and treatment resistance. Studies reveal the role of hypoxia, neutrophils, and genetic evolution in promoting metastasis, as well as potential therapeutic targets for prevention and treatment.
A study found that brief face-to-face conversations with Florida residents measurably changed attitudes toward transgender people, with effects lasting beyond 3 months. The approach, developed by the Los Angeles LGBT Center, involved strategies to facilitate active processing and reflected experiences of prejudice.
Researchers developed a model that accurately predicts individual differences in task activation based on resting-state fMRI data. This novel approach suggests that resting-state patterns provide considerable information for estimating individual differences in task activation.
A new study suggests that global climate models have underestimated the impact of clouds on warming, leading to lower projections. Clouds and aerosol particles significantly influence atmospheric temperatures, and recent data show that certain ice formation processes are less common than previously thought.
A new computational tool, parabolic personalized dosing (PPD), successfully tested in a pilot trial accurately predicts the optimal drug dose for an individual patient. PPD harnesses clinical data to account for various factors influencing drug response, including age, ethnicity, and genetics.
Researchers developed a compact system that can synthesize various pharmaceuticals in short periods, reducing batch production and addressing drug shortages. The system produces high-quality drugs continuously over several hours or days, with the potential to facilitate on-the-spot production of pills through new approaches.
Researchers discovered a white dwarf star with an atmosphere dominated by oxygen, a finding that could rewrite the textbook wisdom of single stellar evolution. The discovery provides critical evidence for some types of supernovae and may be linked to interactions with a nearby companion or massive carbon pulses.
Researchers used cryo-electron microscopy to analyze the Zika virus strain isolated from an infected patient in French Polynesia. The analysis revealed that Zika's structure is similar to other flaviviruses, but with a slight difference in a region important for binding to antibodies and host receptors.
Researchers have improved upon previous assemblies of the gorilla genome using long-read sequencing technology and algorithms, reducing sequence gaps by 96% and closing 94% of previously identified gaps. The new assembly provides a better understanding of genetic variation between humans and non-human primates.
Five researchers who designed and executed the National Longitudinal Study of Adolescent Health will receive the Golden Goose Award. The study has provided unanticipated insights into how adolescent health affects wellbeing long into adulthood and laid essential groundwork for research into the nation's obesity epidemic.
Mutations in the PIK3CA cancer gene drive venous malformations, a common blood vessel abnormality causing painful and disfiguring lesions. Repurposing PI3K-inhibiting cancer drugs may offer a potential therapeutic avenue for patients with these vascular diseases.
Researchers designed a minimal bacterial genome containing only essential genes for life, consisting of 473 genes. The JCVI-syn3.0 platform represents a versatile tool for investigating the core functions of life.
A new study analyzing over 16,500 vertebrates found that species adapted to daily temperature fluctuations have smaller elevational range sizes, unlike those adapted to seasonal changes. This research suggests specialist species are favored in settings with dominant daily temperature variations.
Researchers have discovered an HIV-fighting immunogen called eOD-GT8 that shows extraordinary binding affinity for naïve human B cells, outperforming previous candidates by a factor of 2100. Approximately 96% of humans harbor B cells sensitive to this immunogen, suggesting its potential as a viable HIV vaccine strategy.
Researchers sequenced Zika virus genomes from Brazil to estimate a single entry point into the Americas, likely between May and December 2013. This timing correlates with major cultural events and increased air travel from Zika-endemic regions.
Researchers discovered that prooxidants can repair a metabolic flaw in T cells that drive rheumatoid arthritis. Treating arthritic mice with ROS-inducing drugs restored the T cells' redox balance and reduced joint inflammation.
Researchers identified O-GlcNAc transferase (OGT) as a key enzyme regulating food intake in mice. Deletion of OGT caused mice to overeat and become obese, suggesting a new treatment target for human obesity.
A new study in mice suggests that a mother's microbiome shapes her offspring's immune system. The research found that maternal antibodies facilitate the transmission and retention of microbial molecules from a mother to her offspring.