A new study reveals human activity is driving mammals to adopt nightlife, changing behavior and physiology; high levels of disturbance lead to increased nocturnal activity by a factor of 1.36.
Researchers have developed a new approach to detect quakes by measuring optical phase changes in oceanic fiber optic cables triggered by seismic waves. This method can effectively detect quake activity and parameters, even in regions where seismic monitoring has been limited.
Scientists have developed a new vaccine-based intervention that reduces severity and increases survival times in animal models. A probiotic bacterial species, Lactococcus lactis, has also been found to combat cholera by producing an acid that kills the bacteria.
New research finds that minority groups need to be at least 25% of the population to effect change and persuade others to adopt their view. The study's findings challenge previous estimates and provide insight into the tipping point phenomenon.
The Curiosity rover has discovered a seasonal cycle in Martian methane levels, suggesting it may be trapped in water-based crystals. Additionally, the rover has detected ancient organic matter, including thiophene and methanethiol, which are reminiscent of Earth's organic-rich sedimentary rock.
Researchers trained free-flying honey bees to recognize numbers from two to five, then introduced one and zero, demonstrating their ability to distinguish zero as lower than one.
The discovery of ancient tetrapod fossils in South Africa suggests that four-limbed animals evolved in environments beyond tropical regions. The presence of these animals near the poles raises questions about the role of high-latitude environments in their evolutionary transition.
A new analysis of US internet search data found a strong association between anti-Muslim and pro-ISIS searches in ethnically alike communities with high poverty levels. The study suggests that counterterrorism policies targeting Muslims may inadvertently increase radicalization in these communities.
Infected mice developed seizures, motor function impairment, and memory issues as adults, with reduced muscle strength and increased inflammation. Targeting TNF-α inhibition may alleviate some long-term consequences of neonatal Zika infection.
A meta-analysis of global food production cycles and their environmental impacts has identified data-supported opportunities to reduce the environmental impact of food production. The study found that some products have disproportionately high environmental impacts, while others may require trade-offs in certain mitigation strategies.
Ancient DNA analysis of Icelandic populations reveals a strong connection to Scandinavian and British-Irish Isles, whereas modern Icelanders show less similarity. A second study explores the genetics of first Americans, suggesting a deep split in North and South American populations occurred south of the Laurentide ice sheet.
A study found that households with opposing political views spent significantly less time at the Thanksgiving table in 2016. Political tension exacerbated this effect, particularly for those exposed to high amounts of advertising. Overall, partisan differences cost Americans 73.6 million hours spent interacting during Thanksgiving.
Scientists have discovered dunes made of solid methane on Pluto, defying expectations due to the dwarf planet's thin atmosphere. The findings were made possible by New Horizons' detailed images and modeling, which suggest that wind can create these unique landforms through a process involving sublimation.
Researchers found that triclosan causes colon inflammation and worsens colon cancer in mice, raising concerns about its safety for human consumption. The study suggests that individuals with inflammatory bowel disease or colon cancer may be more vulnerable to the chemical's adverse effects.
New research suggests that a narrow corridor along Alaska's Pacific coast could have enabled early human migration to the Americas as far back as 17,000 years ago. The authors used dating and reanalysis of animal bones to reconstruct deglaciation and find that the area was habitable during this time period.
Researchers have developed an ingestible sensor that can detect disease-driving molecules in the gut, providing real-time data to doctors. The device, called Ingestible Micro-Bio-Electronic Device (IMBED), uses bacteria engineered to sense biomolecules, which activate when target molecules diffuse across a semipermeable membrane.
Research tracking juvenile storks reveals that birds at the head of a flock use thermal winds more efficiently and flap less. The study suggests that individual variation in flight performance is linked to differences in finding and exploiting thermals.
A new study analyzes ancient fish remains to reveal a 5°C rapid temperature increase following the Chicxulub asteroid impact. The findings suggest that temperatures did not cool for roughly 100,000 years after the event.
Researchers found that atmospheric blocking caused by meandering jet streams slows eastward winds and can lead to extreme weather events. Climate change may alter the frequency of blocking, potentially due to increased jet stream capacity
A study found that rice grown under higher CO2 concentrations has lower nutritional value, particularly in protein, iron, zinc, and vitamin B content. This decrease may have significant implications for the health of populations relying heavily on rice as a primary food source.
Scientists used deep brain stimulation to regulate blood sugar metabolism and increase insulin sensitivity in patients with type 2 diabetes. The treatment showed promising results, reducing insulin requirements and boosting glucose tolerance.
By analyzing ancient DNA from Southeast Asian individuals, scientists identified two major waves of genetic mixture indicative of specific migration events. These migrations, occurring during the Neolithic period and Bronze Age, reflect the introduction of farming and cultural shifts in the region.
Researchers discovered that zinc sulfide crystals can bend up to 45% when in complete darkness due to the absence of electron trapping under light conditions. This unique property makes it suitable for flexible electronic applications where traditional inorganic semiconductors are brittle.
A new study finds that one-third of protected land globally is under intense human pressure, threatening conservation efforts. However, protected areas designated after 1993 have lower levels of human pressure within their borders.
By 2100, a 2°C limit could see insect species lose over half their ranges double, while a 1.5°C target halves this number, highlighting the importance of ambitious climate targets for biodiversity conservation
Researchers discovered that elevated stress response protein levels are associated with reduced kidney damage after heart surgery. High MIF levels before surgery may help identify patients at risk for acute kidney injury.
A study of 7,103 active faculty researchers found that over half had disclosed their results before publication, with social scientists and mathematicians being the most likely to do so. The dominant motive was to receive feedback, while formulaic fields like computer science and mathematics shared results to attract competitors.
A new study reveals that bigger female fish produce significantly more offspring than smaller ones, with a scaling pattern where larger mothers produce exponentially more eggs. This finding has implications for fisheries management and suggests that larger fish are crucial for replenishing marine populations.
A deadly fungus, chytridiomycosis, affecting amphibian populations was traced to the Korean peninsula through genetic sequencing of 177 fungal samples. Human trade of amphibian species accelerated its global spread, with strains showing varying levels of virulence.
Researchers analyzed ancient genomes to shed light on historical migration, language spread and horse domestication in Asia. Genetic data suggests that people migrated eastward through Central Asia before settling in the eastern regions.
Reconstructing the 3D structure of an interstellar cloud is critical for understanding the processes occurring within it. The authors successfully modelled the cloud's density using fast magnetosonic waves, showing that Musca is a vast sheet-like structure, not a long filament.
Researchers have created a bioengineered heart valve that emulates native heart valves and functions well after transplantation into sheep. The tissue-engineered heart valve demonstrated improved valve mechanics and tissue structure, and remodeled itself in a similar fashion to native heart valves over time.
A new study found that nearly 30% of tiny particles in a nonsmoking classroom were associated with thirdhand smoke residue. Laboratory experiments confirmed the findings, revealing that THS can travel far from its original source and pose health risks.
A new study reveals that a type of beneficial bacteria, Bacteroides fragilis, uses the host's immune protein IgA to colonize the gut. The research suggests that IgA fosters colonization of microbiota with beneficial properties during healthy circumstances, while disease states may disrupt this balance.
Researchers used scanning transmission electron microscopy to reveal a filamentous pattern of long, curved crystals in bone. A previously unknown substructure was discovered: rose-shaped crystals arranged into left-handed helices.
Aging mice with fewer Merkel cells experience greater mechanically induced itch, suggesting a potential explanation for the loss of mechanical itch control under aging and chronic conditions. The study's findings contradict the intuitive notion that fewer sensory neurons would lead to weaker sensations.
Researchers have developed a sophisticated membrane design that boosts water flux by five-fold, surpassing traditional nanofiltration membranes. The new system exhibits excellent water-salt separation ability and maintains high water permeability and selectivity.
Researchers found a potential biomarker for autism spectrum disorder (ASD) in monkeys with low social behavior, which had lower arginine vasopressin concentrations in their cerebrospinal fluid. This discovery suggests that AVP may be a target for developing new drugs to alleviate social impairment in ASD patients.
Researchers analyzed genetic material from organisms to assess dark diversity of sharks and found three times more species in wilderness areas than traditional visual methods. The results suggest a lower estimated dark diversity of sharks in the region, potentially impacting IUCN Red List classifications and aiding conservation efforts.
A 2017 Mw 5.4 Pohang earthquake in South Korea is believed to have been triggered by fluid injection at a nearby Enhanced Geothermal System (EGS) site, the largest-induced quake ever recorded at an EGS location.
Researchers identified principles for efficient mechanical systems that generate and amplify kinetic energy. Shorter latch release times amplify power, while longer durations eliminate it, explaining why small spring-based systems are more effective.
Studying ancestral remains requires respect and consideration of indigenous communities. Researchers should engage with living individuals to ensure ethical best practices and robust results.
Researchers have developed a family of synthetic polymers that can be repeatedly recycled with great efficiency. These new polymers overcome the challenges faced by existing biodegradable plastics and mechanical approaches to reusing plastic, offering a highly desirable chemical recycling method.
A portable test has been developed to identify populations at risk of measles and rubella infections in remote areas. The new technology can rapidly test multiple blood samples and is a potentially useful tool for addressing vaccine-preventable diseases in developing countries.
Researchers found interdependent behaviors in customers from rice-growing regions and individualistic behaviors in those from wheat-growing regions. Historical farming legacies play a significant role in shaping everyday behavior, contradicting the idea that wealthier cultures become more individualistic.
A new study by Felisa A. Smith et al. found a substantial bias in mammal extinction during human dispersal periods, with species that went extinct being two to three times bigger than surviving mammals. This trend is evident globally and reflects hominin-mammal interactions.
Researchers have discovered a way to make diamonds flexible by etching tiny needles from artificial diamond films, achieving strains up to 9% and surpassing theoretical limits. The development holds implications for bioimaging, biosensing, and ultra-strength nanostructures, as well as optomechanical devices.
The next WHO Biosafety Handbook revision should prioritize local relevance, proportionate infrastructure and sustainable work practices. This new approach would ensure safe laboratory procedures with minimal resources in less developed countries.
A 20-year study found that C3 grasses actually lose biomass under elevated CO2 levels, while C4 species gain significantly, contradicting previous expectations. This reversal has significant implications for modeling future climate and accurately estimating the distribution of these plant species globally.
Ancient European horse breeding practices likely contributed to the limited paternally-inherited Y chromosome diversity in modern horses. Selective breeding during the Iron Age may have reduced genetic variation, as humans prioritized reproductive success of selected stallions. The Roman Empire's shift towards male-based selective bree...