The observation of two neutron stars merging generated tiny ripples in spacetime called gravitational waves, detected by LIGO detectors on Earth. This event also triggered an explosion studied by hundreds of astronomers worldwide, marking a major breakthrough in astrophysics and offering new tools for observing the universe.
The study presents a comprehensive checklist of 124,993 plant species across North and South America. Notably, the vast majority of plant species in the Americas are found in just one country or region, with Brazil having the most diverse flora. The authors predict an additional 25,000 species will be documented by 2050.
Researchers have gained crucial gene-level insights into an age-old evolutionary arms race between wheat and stem rust disease, a devastating fungal pathogen. The studies identified key peptides released by the fungus that can evade plant immune systems, potentially allowing for more effective DNA testing to identify resistant crops.
A national survey experiment reveals that 53% of respondents supported denying service to same-sex couples, while 39% favored it for interracial couples. Support for service refusal extends beyond religious reasons, with many citing individual rights and libertarianism.
Researchers successfully interrupted rabies transmission in N'Djaména, Chad, after two mass dog vaccination campaigns. The campaigns reduced dog-to-human transmissions by less than one per million people, highlighting the effectiveness of vaccines when local communities are informed and engaged.
The article discusses ways to reconcile differing views on elephant conservation policy between two groups with conflicting opinions. Stakeholder trust and agreement can be achieved through structured discussions and the evaluation of policy consequences in a way that minimizes bias.
Researchers have created large-scale, programmable self-folding DNA and RNA structures using user-friendly software tools. The new nanostructures can be successfully cloned and amplified inside living cells, offering a low-cost high-scale production strategy for manufacturing the nanostructures.
The American Association for the Advancement of Science proposes a new regulatory approach for fecal transplant treatments. Stool banks would be required to report patient outcomes, while doctors and laboratories could distribute stool for CDI treatment at their discretion.
Scientists have developed a noninvasive tuberculosis test that can detect active infections in HIV-negative patients using urine samples. The test, which traps sugar molecules found on the TB bacterium's outer coat, has shown increased sensitivity and accuracy compared to previous methods.
A Pennsylvania study found that infants born to mothers near active fracking sites are 25% more likely to have low birthweight, a risk factor for infant mortality and other health issues. Exposure to fracking pollutants may contribute to this increased risk.
Cassini spacecraft data reveals Saturn's rings casting shadows in ionized particles, affecting the planet's ionosphere. The dynamic ionosphere is structured on small scales and shows surprising variability, with possible explanations including ring rain, solar radiation, or magnetic field interactions.
A new study estimates that 60 additional accidental deaths related to firearms occurred after the Sandy Hook shooting, including 20 among children and 40 among adults. Exposure to guns increased following the tragedy, leading to a spike in accidental firearm-related deaths.
Astronomers measured the magnetic field of a black hole in a binary system using data from a sudden flare. The field was found to be substantially weaker than expected, providing new insights into how black holes consume material.
Researchers found that controlled dam pulses and flood magnitudes significantly impact fisheries. The study suggests prolonged drying followed by sudden flooding could increase fish yields by a factor of 3.7, offering a promising solution to sustainable fisheries.
East Greenland narwhals display paradoxical reactions when escaping from threats, including a downregulated heartbeat and increased swimming speed. This joint response puts extreme stress on the cardiovascular system, highlighting why deep-diving marine mammals are vulnerable to manmade disturbances.
A young scientist's groundbreaking work reveals that microbial communities' metabolic processes are influenced by environmental constraints rather than species interactions. The study uses high-throughput sequencing technology to analyze the DNA of entire microbial communities, providing insights into bioremediation and ocean chemistry.
A randomized clinical trial found no benefit for a therapeutic HIV vaccine in suppressing viral infection, but provided valuable insights for future cure efforts. Four people in the placebo group exhibited spontaneous HIV suppression, exceeding expected rates among the general population.
Research reveals that bone marrow-derived cells contribute to lung cancer progression by stimulating the production of specific neutrophils. These neutrophils exhibit increased expression of genes associated with tumor-promoting processes, leading to worse patient survival in a small study.
Researchers have discovered a faster method for estimating large earthquake magnitudes by analyzing 'elasto-gravity' signals, which travel at the speed of light. These signals consistently arrive before seismic wave counterparts, allowing for near-real-time magnitude detection and more accurate estimates.
A collection of over 200 fossilized pterosaur eggs is providing new insights into the species' development, with some containing embryonic remains up to 2 years old. The findings suggest that newborn pterosaurs needed parental care and likely participated in colonial nesting behavior.
Researchers have obtained a detailed view of a scallop's visual system, which is strikingly similar to a reflecting telescope. The complex arrangement of up to 200 eyes allows the scallop to achieve spatial vision through a layered mirror structure that reflects specific wavelengths of light.
A recent study reveals prehistoric women performed intensive manual labor for thousands of years, surpassing modern female athletes. This finding highlights the crucial role of women's labor in agriculture's development and underscores the importance of using female comparative data to interpret past behavior.
Researchers discovered vasopressin's role in stimulating red blood cell production, with implications for treating anemia after traumatic injuries or chemotherapy. The hormone's effectiveness was demonstrated in mouse models and clinical data from patients with central diabetes insipidus.
A new study found that infants attribute more value to rewards that are harder to attain, indicating they can grasp concepts of reward and cost. Infants gaze longer at scenarios where the character chooses a less desirable reward over a more accessible one, suggesting they understand that greater effort is needed for better outcomes.
A new study confirms presence of Fusobacterium in liver metastases of colon cancer patients, correlating with tumor growth and colonization. The bacteria travels with metastatic tumor cells to distant organs, potentially aiding their colonization.
Scientists create 3D metamaterials that twist when compressed using computer simulations and laser microprinting. The material can respond in a chiral way, challenging classical solid mechanics, and could have applications in space missions, optics, and prosthetics.
A comparative analysis of primate brains found that humans exhibit unique differences in dopamine gene expression, particularly in the production of neurotransmitters like dopamine. These differences may contribute to aspects of cognition and behavior such as working memory, reasoning, and intelligence.
A global analysis found that artificially lit surface of Earth at night is growing in size and brightness in most countries. This trend has nearly matched the global rise in gross domestic product.
Researchers discover misfolded prion proteins in skin samples from Creutzfeldt-Jakob disease patients, but find lower amounts in the skin compared to brain tissue. The study raises concerns about possible transmission of prion diseases through surgical procedures involving the skin.
Researchers analyzing data from the HAWC gamma-ray observatory suggest that excess positrons may originate from dark matter annihilation or decay. The study's findings indicate that positrons generated by nearby pulsars cannot reach Earth, leading to the conclusion of an exotic origin.
Recent studies on passenger pigeon genomics reveal surprisingly low genetic diversity despite large populations. The study suggests that high adaptability allows faster evolution, but also drives a loss in genetic diversity, making the birds more vulnerable to extinction.
A new study found that a small set of vulnerable patches in power grid networks disproportionately cause costly cascading failures. The study analyzed data from the U.S.-Canadian power grid system and developed a model of network connectedness, revealing that only 10.8% of links ever underwent primary failure.
Scientists have made progress in creating more sustainable plastics from plants, but developing recyclable materials remains a challenge. Degradable plastics face difficulties degrading in natural environments due to varying factors such as humidity and microorganisms.
The 2017 AAAS Kavli Science Journalism Awards honored distinguished reporting on topics such as antibiotic-resistant infections, superbugs, and climate change. The winners included a Reuters team for their investigation into uncounted deaths from superbug infections.
A new study found that a single strain of bacteria can cause imbalance in the gut microbiota of individuals with Crohn's disease. The findings suggest that preventing this imbalance could lead to promising treatment options for inflammatory bowel diseases.
A null mutation in SERPINE1 is associated with a longer life span and improved metabolism among the Amish population. The study found that carriers of this mutation lived 10 years longer than non-carriers, with lower rates of diabetes.
A new study reports that much of western Canada was ice-free as early as 14,000 years ago, contradicting previous estimates. The research suggests that the Cordilleran Ice Sheet retreated more than a millennium sooner and holds implications for understanding climate patterns and human migration.
A large-scale study found that articles from small news outlets can increase discussion by 63% and shift the balance of opinion by 2.3% in favor of the article's ideological direction. The impact is observed across different political affiliations, geographies, and social media intensity.
Researchers developed better search algorithms using fruit fly brain's odor classification technique, which assigns similar neural activity patterns to similar odors. The fly-based approach outperformed conventional computer algorithms in sorting data with improved performance.
Researchers analyzed genomic data to identify the source of the seventh cholera pandemic, linking it to human-related transmission factors. The study found that the pandemic strain was introduced into Africa at least 11 times since 1970, replacing drug-susceptible populations with multidrug-resistant bacterial sublineages.
A meta-analysis of 133 studies found that natural regeneration is more effective in restoring biodiversity and forest structure compared to active restoration. Natural regeneration also proves to be a lower-cost approach, contrary to previous findings.
Fibroblasts' circadian clocks affect wound healing, with slower healing times observed at night. Researchers found that resetting cellular clocks before surgery could help maximize healing outcomes.
A new study in Nicaraguan children pinpoints a narrow window of antibody levels that enhances reaction to severe dengue, shedding light on the long-standing phenomenon of antibody-dependent enhancement (ADE). The findings hold important implications for vaccine development against dengue and related flaviviruses like Zika.
The Agreement on Enhancing International Arctic Scientific Cooperation aims to improve movement of researchers and equipment, share data and metadata, and transfer traditional knowledge across territories. Effective implementation will balance national interests with common goals for the benefit of all stakeholders in the region.
Researchers develop a method for assembling colloidal clusters using origami DNA, allowing precise control over particle orientation and properties. The technique enables the creation of clusters with specified chirality, which could lead to improved understanding and utilization of particles with unique optical or magnetic properties.
Two studies reveal that gut bacteria play a crucial role in cancer treatment response, with certain beneficial microbes linked to improved survival and efficacy of immunotherapy. Patients with healthier gut flora tend to have more immune cells that can target tumors.
Researchers have identified a distinct subset of hematopoietic stem cells capable of fully repopulating the bone marrow after transplantation. These cells, marked by specific surface markers, were found to be essential for successful bone marrow transplantation in nonhuman primates and show promise for human applications.
A new study found that prior alcohol exposure enhances cocaine-seeking behavior in rats, promoting degradation of HDAC4 and HDAC5 proteins. This breakdown creates a permissive environment for cocaine-induced gene expression, increasing vulnerability to compulsive use.
The American Association for the Advancement of Science (AAAS) has launched SciLine, a new service connecting reporters with credible scientists to provide evidence-based information on news-worthy topics. This initiative aims to advance quality reporting on science and technology issues, building trust between news outlets and audiences.
Researchers created a polymer-based material with enhanced strength and elasticity by mimicking a mussel's adhesive qualities. The material, which is 770 times stiffer and 92 times tougher than its untreated precursor, offers potential applications in structural, biomedical, and aerospace materials.