A study links mosaic loss of Y chromosome to heart failure and cardiac fibrosis in aging men, while a neutralizing antibody shows promise for reversing cardiac impacts. MLOY is associated with increased mortality and age-related diseases.
A new pandemic treaty could transform global health governance by addressing spillover risk, pandemic risk, and recovery strategies. The proposed elements focus on proactive measures to prevent pandemics from occurring in the first place.
Pharmaceutical compounds can bioaccumulate in wild animals and alter behavior, survival rates, and even drive species to extinction. Further ecotoxicological research is needed to evaluate the ecological impacts of pharmaceutical pollution, including mixture effects on complex natural systems.
A case study from India shows that police reforms improve responsiveness to gender-based violence, especially when female officers staff dedicated women's help desks. However, the reforms have mixed results, with women still under-reporting crimes and arrest rates largely unaffected.
The OSIRIS-REx mission has collected a sample from asteroid Bennu, which will be analyzed in 2023. The study found that the asteroid's surface consists of low-cohesion rubble and sub-surface material is darker and more fine-particle-rich than the overlying surface.
Researchers discovered that low-signal-to-ambient noise ratio sounds cause analgesia by inhibiting inputs from the auditory cortex to specific somatosensory thalamus regions. This finding provides a model for investigating the mechanistic underpinnings of sound-induced pain relief.
Researchers developed a new biofabrication method to create three-dimensional helically aligned human heart tissue models using focused rotary jet spinning. This approach enabled the recreation of heart ventricles with similar structural properties as natural hearts and showed that helical architectures increased cardiac performance.
Dr. Jennifer Hampton Hill's work shows that restoring lost bacterial cues in the gut can stimulate development of insulin-producing cells, potentially protecting against autoimmune destruction associated with Type 1 Diabetes. The discovery of a specific protein, beta-cell expansion factor A (BefA), holds promise for human beta-cells.
Researchers developed a soft miniaturized implantable nerve cooling system that provides targeted and reversible pain relief through liquid-to-gas phase transition. The device offers real-time temperature monitoring and control, making it a potential game changer for long-term pain management.
Researchers have discovered a small group of neurons in the ventral tegmental area that detects stress after social defeat and induces restorative sleep. This process alleviates stress levels and mitigates stress-induced anxiety in mice, restoring mental and body functions.
A study by Mary Blair-Loy and colleagues reveals that hiring rubrics can improve diversity in faculty hiring but require additional strategies to combat gender bias. The researchers found that even with seemingly objective evaluation processes, gender bias remains endemic in some scoring categories.
A study of ancient and modern DNA in Micronesia has identified five separate migrations into the region, with one population showing no Papuan ancestry. The research also found a matrilocal social structure where men followed female migrants, settling within their families' communities.
Researchers investigated aging in turtle species, finding surprisingly little evidence of senescence. Protective adaptations and life history strategies contribute to the negligible aging in long-lived species. Some turtle and tortoise species may even reduce physical aging in response to better environmental conditions.
The study reveals a surprising 8,000-year accumulation of forest biomass in the Midwest, driven by climate change and ecological succession. This finding challenges previous assumptions about forest stability before industrialization.
Global river sediment flux is changing due to human activities like land use change, dam building, and climate change. Sediment flux decreases in the northern hemisphere but increases in the southern hemisphere, with SSC on average rising by 41% since 1980.
Researchers found a giant bacterium, Thiomargarita magnifica, that can be seen without a microscope and has a complex membrane organization. The discovery suggests that large and more complex bacteria may be hiding in plain sight.
A new precipitation record suggests that persistent droughts in southern Arabia contributed to the decline of the Himyarite kingdom and the emergence of Islam. The droughts, which lasted from 500 to 530 CE, coincided with a turning point in Arabian history marked by political and socioreligious transformations.
Researchers successfully integrated an erbium-doped waveguide amplifier into a compact silicon nitride photonic chip, achieving high-power output of 145 megawatts with low noise. This breakthrough addresses the limitation of insufficient output power in optical integrated circuits.
A genetically distinct population of polar bears has been discovered in Southeast Greenland, adapting to hunt year-round on freshwater ice near marine terminating glaciers. This finding provides hopeful insight into polar bear resilience in the face of a warming climate.
A recent study using satellite images identified over 450,000 ocean oil slicks worldwide, finding that the overwhelming majority (94%) are caused by human activity. The remaining 6% can be attributed to natural sources, highlighting the need for better understanding of global oil pollution and its impacts on marine ecology.
Researchers found that infants from non-industrialized nations have diverse gut microbiomes, whereas those from industrialized countries have low-diversity microbiomes. This divergence occurs early in life and is influenced by maternal transmission and local environment.
A new study has found a temperature-dependent latitudinal gradient in nearshore fish predation, with greater predation intensity and stronger impacts in warm equatorial waters. This research could help inform patterns of biodiversity, ecosystem function, and resilience to climate warming.
Samples from asteroid Ryugu are chemically similar to Ivuna-type (CI) carbonaceous meteorites, offering insights into the Solar System's formation. The findings suggest that Ryugu samples represent the most primitive and pristine Solar System materials analyzed in a laboratory.
A new analysis reveals that marine RNA viruses predominantly infect protist and fungal hosts, including plankton, and sort into four distinct ecological zones. The study found that RNA viruses have a large influence on the ocean ecosystem, affecting processes like photosynthesis and ocean carbon flux.
Researchers suggest that giraffes' unique head and neck morphologies were adapted for fierce head-butting behavior in competition for mates. The discovery of ancient fossils reveals a complex evolution driven by both food competition and sexual selection.
Researchers applied machine learning to MRI brain scans and found that autism does not cluster into distinct subtypes but rather exists as continuous variation in brain structure. The study's findings suggest that dimensional approaches can provide a better account of individual variation than discrete diagnostic categories.
Exposure to glyphosate herbicide impairs bumblebees' ability to maintain hive temperature, particularly during food scarcity. The study found a 25% decrease in collective thermoregulation capacity, suggesting a hidden cost of glyphosate use on already vulnerable pollinator species.
Satellite imagery reveals significant decline in snow cover (less than 10%) but increased plant productivity (77% above tree-line area) in the European Alps. Climate change feedbacks may accelerate snowmelt, altering albedo and releasing greenhouse gases, posing risks to fragile alpine ecosystems.
Researchers developed a biodegradable, wireless micro-electro-mechanical system for minimally invasive heart monitoring and control. The device eliminates the need for surgical procedures and reduces infection risks compared to traditional implanted devices.
Reducing phosphorus levels alone could increase toxin production and harm aquatic life in Lake Erie. The new model highlights the need to consider nitrogen reduction as well to control algal blooms.
A study using 50 years of satellite imagery found that avulsions occur more frequently in steep, sediment-rich rivers in tropical and desert environments. The research suggests that climate change and land use can increase the risk of avulsions in upstream locations.
Researchers discovered a novel, naturally inspired bifunctional lipopeptide antibiotic cilagicin with potent antimicrobial activity against several Gram-positive bacteria. The compound demonstrated broad efficacy, including resistance to difficult-to-treat strains like C. difficile and vancomycin-resistant Enterococci.
Researchers discovered 'ghost' nannofossils in black shale deposits worldwide, revealing plankton were more resilient to past warming events than thought. These findings contradict previous interpretations of declines in nannoplankton fossils during global warming events.
Researchers argue that policymakers often misinterpret scientific definitions of 'sex' in laws and policies, leading to hurtful and illogical outcomes. The authors propose approaches to improve clarity and precision in scientific discussions of sex differences.
Researchers convert undersea optical cables into environmental sensors, detecting seismic vibrations and ocean currents with greater precision. This approach enables a large network of permanent and real-time seafloor sensors to be implemented without modifying existing subsea infrastructure.
Internet addiction parallels other addictive behaviors, driven by pleasure and reduced negative moods. Evaluating the root cause may help identify vulnerable individuals and prevent problematic use.
The January 2022 volcanic eruption of Hunga Tonga-Hunga Ha‘apai was one of the most powerful recorded, generating long-range infrasounds and global tsunamis. An unexpected atmospheric wave contributed to the tsunami 'forerunner,' arriving earlier than expected.
A new study found that current forest carbon sequestration models may be overestimating the ability of forests to store atmospheric carbon. The findings highlight the importance of considering processes other than photosynthesis for estimating carbon sequestration, such as temperature, water, and nutrient availability.
A new study reveals that dragonflies employ wing pitch asymmetry and visual signals to execute their adept aerial acrobatics. The research provides insights into the neurological and physical mechanisms underlying dragonfly flight control, shedding light on the evolution of flight strategies.
The Human Cell Atlas consortium has created the most comprehensive cross-tissue cell atlases to date, mapping over 1 million individual cells across 33 organs. These detailed maps hold therapeutic implications for understanding common and rare diseases, vaccine development, anti-tumor immunology, and regenerative medicine.
A study in mice found that caloric restriction with timed feeding, particularly at night, promotes longevity. Calorie restriction extended lifespan as expected, but its benefits were maximized when the fasting interval exceeded 12 hours and food was consumed during the organism's natural active phase.
Researchers find that oxybenzone sunscreen is converted into a phototoxin inside cells of anemone and coral, making them more susceptible to damage. This conversion may help explain why oxybenzone-based sunscreens are harmful to bleached coral reefs.
A new genetic study suggests that inbreeding will not doom the endangered vaquita to extinction. Despite low genome-wide diversity, vaquita individuals have remained healthy and able to breed with weakly deleterious genetic mutations accumulating over time.
Researchers have found a deep sub-ice stream groundwater system in West Antarctica, containing more than ten times the volume of shallow hydrologic system above. This discovery highlights the critical role of groundwater hydology in understanding ice sheet dynamics and its potential impact on sea level rise.
A new study finds that individual rabid dog behavior plays a key role in maintaining the persistence of canine rabies at low levels. Infected dogs act as super-spreaders, traveling long distances to introduce new lineages into neighboring communities and sparking local outbreaks.
A genetic study involving over 2,000 dogs and 200,000 owner surveys suggests that breed alone is not a reliable predictor of behavior. The research identified 11 genetic loci associated with behavior, but none were specific to breed, instead revealing that age, sex, or other factors are often better predictors.
A new study predicts mass extinction in oceans if climate change is not curbed, threatening marine species with extinction. Reducing greenhouse gas emissions could reduce extinction risks by up to 70%, saving ocean life as we know it
A small Texas-based study found that roadside safety messages can increase the number of car crashes, particularly when they highlight high numbers of road fatalities. Behavioral interventions may help mitigate this effect if delivered at low cognitive loads.
The CWC and OPCW must adapt to emerging threats, including reinforcement of international norms against CW use and development of new monitoring tools.
A large-scale analysis of over 12,000 cancers identifies new, rare mutational signatures that can enhance personalized cancer treatments and diagnoses. The study reveals a complex landscape of genetic mutations in cancer genomes.