Researchers created a robot that mimics the jumping ability of water striders by controlling the acceleration of its legs. The robot uses a torque reversal catapult mechanism to generate force without exceeding the maximum force that water surface tension can withstand.
Researchers found reduced tree stem growth after severe drought, contrasting with climate models that assume quick recovery. This study suggests reevaluation of climate-vegetation models to accurately capture drought impacts on the global carbon cycle.
Recent Philae landings have provided new data on comet 67P/Churyumov-Gerasimenko, including its surface composition, mechanical properties, and the presence of organic compounds. The findings suggest a highly porous and dust-ice-rich surface with a compressive strength that could improve future comet missions.
A deadly fungal infection, Batrachochytrium salamandrivorans (Bsal), threatens North America's wild salamander population via the international pet trade. The fungus is highly virulent and has caused mass die-offs in Europe.
A new study using ancient DNA and paleoclimate data found that rapid warming events played a greater role in the extinction of megafauna than human activity. The researchers analyzed DNA records over 50,000 years and compared them to climate event records from Greenland ice cores.
Researchers develop a new method to create highly stretchable conductors by aligning carbon nanotubes with rubber cores, resulting in an impressive 1000% stretch-to-conductivity ratio. This innovation has significant implications for future medical devices, optical elements, and robotics.
The discovery of Tetrapodophis amplectus, a four-legged snake fossil from Brazil's Crato Formation, supports the idea that snakes evolved from burrowing ancestors. The species' unique features, including short snout and flexible jaw, suggest it was adapted for grasping prey or clasp during mating.
Ancient and modern genetic data reveal that Native American ancestors entered the Americas as a single wave approximately 23,000 years ago. The research also shows that ancestral Native Americans split off into two branches around 13,000 years ago, coinciding with glacier melt and the opening of routes into North America's interior.
Recent progress in AI has driven significant advancements in machine learning, language processing, and human-like computer programs. Researchers discuss potential implications for humankind, including challenges to privacy, equality, and the public good.
New research reveals polar bears' metabolic rates remain high during summer ice melt, limiting their ability to conserve energy. The study suggests that as sea ice loss increases, polar bears are unable to adapt by entering a low-energy state, leaving them vulnerable to food shortages and reduced survival rates.
Researchers discovered that a plant hormone, salicylic acid, acts as a 'bacterial bouncer' below ground, sculpting the microbiome surrounding a plant's roots. This finding suggests that salicylic acid is required to assemble a normal, commensal root microbiome.
A new study using data from six continents provides strong evidence supporting the humped-back model (HBM) of plant species richness. The HBM theory suggests that environmental stress can lead to low plant productivity, with highly competitive species dominating at high productivity levels. The research found a very strong correlation ...
Researchers designed a more efficient jumping robot using 3D printing techniques and combining hard and soft materials. The robot's unique design, inspired by nature, allows for improved durability and control.
A new study reveals that climate change is compressing the geographic ranges of North American and European bumblebees, leading to significant population declines. The research highlights the importance of conserving these vital crop pollinators globally to prevent their extinction.
A new study reveals that climate change is forcing North American and European bumblebee species to shrink their geographic ranges, with losses of up to 300 kilometers. The findings suggest that these pollinators may experience more rapid decline than other species due to warming temperatures.
A new study reveals that giant pandas have evolved underactive thyroid glands and other energy-saving traits to afford a bamboo diet, with daily energy expenditure 38% of average for terrestrial mammals. This allows them to thrive on low-nutrient plants despite not having stomachs designed for such food.
A new study reveals that the Campi Flegrei caldera's caprock resembles ancient Roman concrete, with intertwining fibrous minerals contributing to its high strength. The findings help explain how the caldera has endured significant deformation without erupting.
The seahorse tail's square shape provides better resistance to twisting and grasping control due to increased contact area. Its resilience is attributed to gliding joints, making it a valuable inspiration for designing search-and-rescue robots and other technologies.
Researchers discovered a human antibody specific to dengue virus serotype 2 that protects mice from the virus, regardless of administration timing. The antibody may act as both a preventative and therapeutic agent by locking viral envelope proteins on the surface, preventing them from entering host cells.
Researchers have identified an unexpected enzyme, RhNUDX1, that plays a key role in producing rose fragrances. By investigating the genes of two rose cultivars, they found that this enzyme generates the fragrant monoterpene geraniol.
Researchers developed a laboratory device to mimic landscape formation, finding that hillslope processes play a key role in shaping valleys. The study's findings support a popular theory on landscape evolution, suggesting a scale-dependent balance between tumbling sediments and runoff processes.
Researchers have identified a fusion gene in poppy plants that facilitates important steps in the plant's morphine-producing pathway. The findings complete the metabolic pathway for morphine, enabling the production of the economically important drug without the need for cultivating poppy fields.
Researchers monitored Helheim Glacier for 55 days and detected 10 large-scale calving events, revealing unique quakes registering magnitude five on the Richter Scale. These glacial earthquakes can serve as proxies for glacier edge breaking, offering insights into ice loss from glaciers.
A new study reveals that heat-tolerant corals can pass on their tolerance genes to their offspring, potentially helping reefs adapt to global warming. The research found that coral larvae from hotter regions were more likely to survive in warmer conditions than those from cooler regions.
Researchers discovered a way to suppress nonlinear distortions in optical fibers, eliminating signal regeneration needs. This breakthrough enables more bandwidth availability and increased data transmission.
Researchers used genetic tools to trace illegal ivory back to its source, identifying two primary poaching hotspots in Africa since 2006. The study found that most savanna and forest elephant tusks originated from Tanzania, Mozambique, Gabon, and the Central African Republic.
Iran's national uranium enrichment plant could be sold to other countries to keep the nuclear program peaceful. Multinationalizing the program ahead of 2025 could set a standard reducing nuclear proliferation risks worldwide.
A team of researchers used GPS technology to track the movements of wild olive baboons, finding that certain individuals act as initiators and pull followers in a particular direction. The study suggests that shared, democratic decision-making is widespread even among species with highly stratified social hierarchies.
A new study finds that wastewater injection rate is the strongest trigger for induced quakes, with high-rate wells nearly twice as likely to cause earthquakes. The research analyzed public data on operational wells across the US and discovered a strong correlation between injection rate and induced seismicity.
New experiments on Japanese rice fish reveal that the fox13 gene determines whether a germ cell becomes an egg or sperm cell. Disrupting fox13 in adult fish with two X chromosomes leads to functional sperm formation in females.
Researchers found that variations in atmospheric oxygen levels over the past 500 million years may have contributed to changes in global temperatures. The study suggests that lower oxygen concentrations led to higher temperatures and increased precipitation during the Cenomanian time period, a warmest period in the past 100 million years.
A new study reveals that hawkmoths' vision is finely attuned to the swaying of flowers in the breeze, enabling them to track wind-tossed flowers under low-light conditions. The researchers found that the moth's tracking responses were slower in dark conditions, but only when the artificial flower moved at high frequencies.
Researchers discovered that injecting water into an inactive fault can cause aseismic slip, which may lead to micro-earthquakes. This study offers insights into the role of friction in fluid-filled faults and could guide monitoring at injection sites.
Researchers found that corals and fish are migrating towards Earth's poles in response to climate change, with habitats shrinking as a result. Coral species can only nest in shallower depths at higher latitudes, limiting their range, while fish habitats will contract by about 20% due to decreased oxygen abundance.
Researchers developed a new technology called VirScan to identify all viruses an individual has been exposed to over their life. The study found that people are exposed to around 10 viral species on average, but some individuals encountered up to 84 different viral species.
Researchers analyzed updated temperature data and found no decrease in warming rate between 20th and 21st centuries. The study suggests the 'hiatus' was an illusion created by earlier data biases.
Scientists and policymakers are reevaluating policies regarding contact with emerging isolated tribes in South America. The spread of diseases via outsiders is a major concern, while anthropologists warn that governments may not be prepared to protect these groups.
Researchers discovered a link between iceberg discharges and increased tropical methane production, suggesting that cold water from the North Atlantic could have crippled the Atlantic meridional overturning circulation, leading to changes in precipitation patterns.
A new study suggests that sleep can modify deeply rooted attitudes, including prejudices of race and gender. By reactivating previously learned associations during slumber, researchers found a reduction in implicit social biases after waking and one week later.
Researchers discovered that memories can be retrieved by activating specific patterns of neurons with light, contradicting long-held assumptions about memory consolidation. This optogenetic approach may have implications for treating Alzheimer's disease and other forms of amnesia.
Researchers have solved the high-resolution crystal structure of a plant protein supercomplex critical to photosynthesis, revealing key pigment arrangements and organization. The findings provide a structural basis for understanding the photosynthetic mechanisms involved in harvesting light from the sun.
Glaciers on the Southern Antarctic Peninsula have been destabilized and are melting at accelerated rates since 2009, contributing significantly to rising sea levels. Warming ocean currents and changes in wind circulation are thought to be the primary causes of this phenomenon.
New study reveals that many known cancer-promoting genes are already present in normal, sun-exposed skin cells, even before they become cancerous. The researchers found that over 25% of normal skin cells carry at least one driver mutation, suggesting a higher frequency of cancer-causing mutations in normal skin than previously thought.
Researchers implanted microelectrodes in a tetraplegic patient's brain to read neuronal activity related to intended movements. The study successfully predicted limb and eye movements, enabling control of a robotic arm with unprecedented accuracy.
The Tara Oceans expedition has cataloged over 35,000 planktonic samples from 210 stations worldwide, uncovering a vast reservoir of uncharted genetic diversity in marine plankton communities. Ocean temperatures appear to be the main factor driving plankton community makeup.
A new study reveals that allowing both males and females in hunter-gatherer groups to choose their living companions reduces relatedness among camp members. This increases the number of camps where an individual has one or more kin, facilitating cooperation and information exchange.
A genome analysis of ten bee species reveals that eusociality evolves differently each time, but shares common trends in gene regulation and complexity. Natural selection relaxes for key genes after complex social forms emerge, as seen in honeybees.
A new study found that a deep-water fish called the opah harnesses heat generated by flapping its pectoral fins to warm its body. This unique adaptation enables the opah to operate in cold and deep water with high-performance capabilities.
A multifaceted program combining direct aid and training helps ultra-poor households accumulate assets and increase food consumption, with lasting impacts up to a year after the program ended.
The GTEx project analyzed over 54,000 genes across 43 body sites from 175 individuals to identify distinct regions in the genome that affect gene expression. This work sheds light on how genetic variation predisposes people to disease and provides a resource for future studies investigating genetic control of gene expression.