A study involving hibernating brown bears and chronically immobilized humans found reduced expression of platelet protein HSP47 to be protective against thrombosis. This finding is supported by research in pigs and mice, suggesting a conserved mechanism across several mammalian species.
Climate change is driving a shift towards more frequent flash droughts worldwide. The study, published in Science, reveals that regions with limited time for preparation are at highest risk. Early warning systems can help mitigate the impacts of these rapid-onset events.
A recent study using JWST observations of a compact galaxy at redshift 9.5 has provided insights into its physical properties. The analysis reveals that the galaxy has a remarkably small radius of 16.2 parsecs, suggesting high density star formation and an abundance of oxygen and hydrogen.
Researchers replaced reactive hydrogens in PHA plastics with methyl groups, enhancing thermal and mechanical properties. This approach enables closed-loop chemical recyclability, a crucial step towards increasing sustainable use of PHAs.
Researchers developed an implant that delivers electrical stimulation to specific spinal neurons to treat dangerously low blood pressure in people with spinal cord injuries. The treatment, called the neuroprosthetic baroreflex, has shown promise in clinical trials and could be used in hospitals and at home to monitor blood pressure.
The World Health Organization (WHO) is urging countries to share data on the origins of SARS-CoV-2 immediately. Scientists argue that early data from China could help prevent future pandemics by providing insights into the virus's transmission and potential animal sources.
A new study reveals that male yellow crazy ants are composed of haploid cells with two distinct genetic compositions, producing chimeric males. This unique reproductive mode deviates from the typical single-cell zygote development and may be associated with a genetic conflict between co-occurring genetic lineages.
A new study reveals that Indigenous cultures integrated domestic horses of Spanish ancestry into their lifeways before Europeans arrived in the region. The analysis of archaeological horse remains suggests that these animals spread northward from Spanish settlements in the American Southwest during the first half of the 1600s.
Researchers have detected a cold stream of atomic carbon gas feeding star formation in a massive radio galaxy. The findings support theoretical models and offer insights into the origins of cosmic materials enabling galaxy evolution.
A study using UK Biobank data found evidence of non-additive genetic dominance effects in human traits, revealing 183 gene loci linked to dominant and recessive patterns. These findings suggest a re-evaluation of classical genetics principles in humans, with potential implications for understanding heritability.
A new study reveals that theropod dinosaurs had their large teeth completely covered by thin, scaly 'lips' when their mouths were closed. This finding challenges long-held depictions of these iconic predators and could have significant implications for our understanding of dinosaur dental anatomy and biomechanics.
A global approach is proposed to integrate natural history museum collections, providing a valuable resource for addressing global issues like invasive species, biodiversity conservation, and climate change. The vast collections held by museums worldwide are becoming increasingly important in policy-relevant research.
A new study reveals oxytocin is essential for social fear contagion in zebrafish, a form of empathy that shares similarities with mammalian behaviors. The hormone's neural activity matches those found in mammals, indicating a conserved role in emotional contagion.
Researchers have developed a method to produce QS-7, a promising saponin-based vaccine additive, in tobacco plants. This breakthrough paves the way for scalable and sustainable production of important saponin-based vaccine additives.
Researchers have identified a protein that enables sorghum to grow in alkaline, salty soils, increasing its productivity in underutilized sodic lands. The findings suggest designing knockouts of AT1 homologs in crops could improve their yields in salty soils.
A new analysis reveals China's overseas coal exit was driven by short-term economic considerations, while domestic support is influenced by stakeholder complexity. The findings suggest that environmental cooperation with China requires distinct approaches for international and domestic engagement.
A study of over 1,400 amphibian species reveals that warning color signaling is likely an intermediate step in the evolution of aposematism. This finding highlights the importance of considering hidden signals in understanding animal antipredator defenses.
A new study reveals that a common gut bacterium uses phase separation of the transcription termination factor Rho to colonize and regulate genes in the mammalian gut. This mechanism is crucial for the bacterium's fitness and potential therapeutic applications.
Researchers have identified evidence of ongoing volcanic activity on Venus based on radar images from the Magellan spacecraft. A vent in the Maat Mons volcano system appears to be changing shape and growing larger between two imaging cycles.
Researchers analyzed island mammal species, finding that those with extreme body size shifts are at higher risk of extinction. Conservation efforts should prioritize protecting insular giants and dwarfs, the last evolutionary marvels of island life.
A team of researchers has created the first-ever insect whole-brain connectome for a Drosophila larva, mapping 3016 neurons and 548,000 synapses. The detailed analysis reveals extensive multisensory integration and cross-hemisphere interaction, with some neural structures resembling those found in machine learning networks.
Research shows that social learning significantly enhances a honey bee's ability to perform the complex waggle dance, which communicates food source location. Inexperienced bees who observed older bees learn from them and improve their dance accuracy over time.
The MIDAS platform enables systematic discovery of elusive protein-metabolite interactions, revealing 830 new PMIs in human carbohydrate metabolism. The study identifies previously unknown regulatory mechanisms, including lactate dehydrogenase regulation by ATP, with potential therapeutic applications.
A new study reveals that boreal fires contributed 23% of global fire carbon dioxide emissions in 2021, surpassing previous records. The research suggests a link between extensive boreal fires and climate drivers, such as temperature increases and heatwaves.
The Coalition for Trust in Health & Science aims to enhance trust in the health system through credible information and evidence-based decision-making. The alliance, comprising 50 member organizations, seeks to address real-world health impacts of misinformation and disinformation.
Researchers discovered a novel sound production system in toothed whales, using their nasal passages to generate complex vocalizations. This unique mechanism allows toothed whales to use different vocal registers for echolocation and social communication, similar to humans and birds.
Researchers discovered two domestication events for cultivated wine grapevine in Western Asia and the Caucasus region 11,000 years ago. They also found that wine and table grapes were cultivated at the same time, contrary to previous hypotheses.
Promising RSV vaccines are nearing FDA approval, thanks to a 2013 discovery that enabled the development of vaccines leveraging insights from structural biology. The event features the scientists behind this breakthrough and their perspective on this milestone.
A massive trove of global fossil data revealed variations in elasmobranch species recovery after the K-Pg mass extinction. Species with restricted ranges and old shark species showed higher extinction rates.
Researchers have developed a method to fabricate substrate-free organic bioelectronics directly inside living tissues. The approach enables the creation of implantable electronic devices that can interface with soft biological neural tissues without causing tissue damage.
A comprehensive report on 'Extinct in the Wild' (EW) species synthesizes data on plant and animal species at risk. Most EW populations are small with low genetic diversity, making conservation efforts crucial.
A study analyzing non-avialan theropod dinosaurs reveals that growth rate and duration played nearly equal roles in body size diversity. Contrary to expectations, changes in both factors contributed significantly to the evolution of giant and miniature sizes among these species.
A new approach, CAITE, leverages copyleft licensing and patent trolling to regulate AI development and deployment. The system would enforce ethical terms and conditions on AI products and derivatives.
Aleksandar Obradovic's work harnesses anti-tumor immune response with tailored cancer immunotherapy, combining drug treatments and immune-response therapeutics. He developed algorithms to predict drug sensitivity and identify groups of cells associated with treatment resistance.
Researchers have discovered volatile compounds in tsetse flies that control mating behavior and potentially aid disease management. The findings may lead to the development of new tools to combat trypanosomiasis, a life-threatening illness transmitted by these insects.
Transparent ocean creatures use reflective cells to hide from predators, featuring tunable and compact photonic glass. Scientists have discovered the structure of these 'eyeglitter' reflectors, revealing new possibilities for photonic innovation in solar energy, communications, and more.
A nationwide survey found that Americans are more willing to use polygenic embryo selection (PGT-P) than germline gene editing for educational purposes, with high-education individuals under 35 being the most accepting. The study also highlights concerns about potential health and social inequalities.
Researchers at Nyayanga, Kenya, have uncovered the earliest evidence of Oldowan tool use, dating back over 600,000 years. The discovery also includes contemporaneous Paranthropus fossils, providing insights into the adaptive advantage of early stone technology in hominin diet and foraging strategies.
A well-preserved fossil assemblage from China reveals a rapid recovery of the marine ecosystem after the Permian-Triassic mass extinction. The Guiyang Biota provides an unprecedented snapshot of a highly diversified marine ecosystem only one million years after the extinction event, forcing scientists to rethink their interpretations.
Researchers have found that relatively oxidized fluids fed Earth's earliest hydrothermal systems, which may have supported prebiotic organic synthesis. The discovery provides new insights into the geochemistry of these ancient systems and their potential role in the emergence of life on Earth.
A new study reveals that wildfire smoke interacts with local weather to create conditions that accelerate wildfire expansion and worsen air pollution. Short-term variations in humidity, wind speed, and precipitation drive extreme wildfires on the US West Coast and Southeastern Asia.
Researchers have created a previously unrecognized amorphous form of ice with a density close to liquid water by using ball milling on ordinary ice at nearly -200 degrees Celsius. This discovery opens new questions about the structural nature of medium-density amorphous ice and its implications for our understanding of water.
A study of over 900 human transcriptomes found that circadian gene expression varies significantly by sex and age, with females showing more sustained rhythms and a higher number of rhythmic genes. Older individuals also exhibited lower rhythmicity, particularly in tissues related to cardiovascular disease.
The NIH-led research response to COVID-19 included the rapid development of mRNA vaccines and monoclonal antibodies, as well as improved diversity in clinical trials. The success of this effort has highlighted the importance of collective effort and continuous investment in basic and applied research.
Silicate weathering helps regulate Earth's climate by removing CO2 from the atmosphere at lower temperatures. The process is influenced by various landscape-scale conditions and physical processes, with temperature sensitivity varying depending on these factors.
Research reveals that evolutionary processes play a larger role in regulating ecosystem function, particularly in coastal marshes. Dominant plants' rapid growth and low decomposition rates allow them to store large amounts of carbon, but neglecting trait variation and evolution in models can mischaracterize ecosystem resilience.
Researchers found that 90% of Earth's mass came from non-carbonaceous material and 10% from carbonaceous chondrite material. The studies indicate that volatile elements were not evenly distributed in the solar nebula, with K coming from NCs and Zn having a mixed source.
Researchers summarize key findings from two Reviews on Amazon deforestation and degradation. Human activities are changing ecosystems at unprecedented rates, threatening the planet's carbon and water cycles. Transformative policies are required to address these impacts and reduce economic demands driving deforestation.
The Chinese Academy of Sciences is reorganizing its institutes into four categories to focus on basic research, applied science, and regional development. However, concentrating resources on creating centers of big-science research infrastructure may bring more distinct competitiveness to the CAS.
The night sky has increased in brightness by 7-10% per year, equivalent to a doubling of its brightness in less than eight years. This rapid growth is outpacing satellite estimates and highlights the urgent need for awareness about artificial light at night.