Researchers have demonstrated feasible global quantum communication between high-orbiting satellites and a ground station, exchanging single photons over 20,000km. This milestone experiment proves secure quantum communications on a global scale using the Global Navigation Satellite System.
A team of climate researchers reviewed existing data and concluded there has never been a statistically significant 'pause' in global warming. The studies, published in Environmental Research Letters, reassessed the data and put it into historical context to find no evidence for a divergence between model projections and observations.
Economic inequality and political divergence can lead to instability in democracies. Social media algorithms also play a role in distorting public opinion and creating false consensus effects. The researchers argue that a better understanding of complex systems is needed to preserve democratic institutions.
A hypothetical 'solar geoengineering' project aiming to halve anthropogenic radiative forcing by injecting sulphates into the lower stratosphere is technically possible, but unreasonably costly with current technology. The estimated development costs for an airframe and engine modifications are under $2 billion.
Researchers studied bacterial ecological systems using experiments and computer models to investigate population dynamics, identifying key role of stochastic effects in early colony patterning. They also found that interactions between neighboring bacteria can amplify local variation, influencing competition outcomes.
A new study by Duke University and the University of York estimates that long-term ozone exposure in Europe, the USA, and China led to 266,000 premature mortalities in 2015. The research uses observed air quality data instead of chemical transport models, finding smaller human-health impacts compared to prior modeling results.
Researchers measured oxygen consumption, heart rate, and ventilation during recovery among Spanish division one and two soccer players. The study found second division players took longer to recover from maximum effort exertion compared to first division players.
A new study finds that oyster mortality in the French Atlantic coast is linked to warm and wet winters, and the positive phase of the North Atlantic Oscillation. Oysters are sensitive to climate change and water quality, making them sentinels of coastal ecosystem health.
A revised roadmap outlines the current status of quantum technology, examining its challenges and goals. The roadmap identifies key areas of focus, including quantum communication, computing, simulation, metrology, and control.
Researchers developed a new method called pneumatospinning to produce collagen microfibres, which have significantly higher tensile strength than traditional methods. The technique has potential applications in medical devices, clinical treatments, and combination therapies.
Researchers successfully created the first experimental realization and structural investigation of single-layer VS2, revealing its unique electronic properties. The team discovered a new vanadium sulphide compound with similar stoichiometry to single-layer VS2, raising hopes for two-dimensional magnetism.
Researchers discovered graphene's 'transparency' in controlling water evaporation by adjusting wetting angles. The coating accelerates evaporation on hydrophobic surfaces and suppresses it on hydrophilic ones, leading to changes in the evaporation rate.
A new study warns that failure to meet the 2°C warming limit will lead to sea level rise and dire global economic consequences. The researchers found that upper-middle income countries like China will see the largest increase in flood costs, while high-income countries will suffer the least.
Researchers have developed a new method to diagnose oral squamous cell carcinomas (OSCCs) earlier, using the mechanical properties of cancer cells. By testing the relaxation behavior after stress release, they found that OSCC cells are 'softer' and exhibit faster contraction than benign cells.
Researchers have developed a method to create human-like skin pigmentation using 3D bioprinting, enabling standardized distribution of melanocytes and manipulation of pore sizes within the dermal regions.
Researchers at Harvard University have developed a faster method for manufacturing 'heart-on-a-chip', allowing for quicker testing of new drugs on engineered human heart tissue. This new approach aims to reduce cardiac toxicity and improve the predictability of drug effects, paving the way for safer clinical trials.
Water-saving measures in California have led to significant reductions in greenhouse gas emissions and electricity consumption. The study found that the decrease in water usage translated into a substantial electricity saving, equivalent to 1,830 gigawatt hours.
Researchers from the University of Gothenburg have identified a new method for detecting drug use and disease through analyzing compounds in exhaled breath. The study found that methadone was present in all samples using both methods, but with varying concentrations, highlighting the importance of device design and sampling technique.
Researchers at Google and UC Santa Barbara developed a new process for creating fully superconducting interconnects, compatible with existing qubit technology. This breakthrough aims to enable larger-scale quantum computers with millions of qubits.
A new model reveals that cooperative contagion processes can lead to more severe spread of infectious diseases, generating abrupt outbreak transitions and multi-stability. This discovery highlights the need for new containment strategies to combat epidemics in realistic systems.
New research by UNC Chapel Hill shows that global GHG reductions will significantly benefit US air quality and human health in 2050. Foreign GHG mitigation efforts contribute substantially to reduced deaths from PM2.5 and O3-related mortality, with co-benefits estimated at $137 per ton CO2.
A new study published in Environmental Research Letters confirms China's clean air action has reduced PM2.5 concentrations by 21% since 2013. The study estimates that premature mortality related to PM2.5 pollution decreased by 9% due to improved air quality.
A new study by researchers at the University of Oklahoma and Oklahoma State University found that individual perceptions of climate anomalies are largely immune to political bias. The study used high-resolution data and address-based panel survey to examine how people in Oklahoma perceived climate anomalies, including extremes of tempe...
Researchers discover that non-thermal plasma can efficiently produce oxygen on Mars through decomposition of CO2. The process could provide a stable and reliable source of oxygen for manned missions, reducing costs and risks.
A new study from Purdue University and the University of New Hampshire finds that pursuing sustainable irrigation can negatively impact environmental and development goals globally. The research highlights the importance of considering irrigation's interaction with other sustainable development goals.
Researchers have developed a measurement-device-independent QKD system using readily available hardware, enabling provably secure communication. The system can generate secret keys at high rates and spans distances of over 100km.
A new study found that the majority of Americans support a carbon tax, with 80% wanting revenue used for clean energy development and infrastructure improvements. The average American household is willing to pay $177 per year in carbon tax, generating around $22 billion for investments in renewable energy and infrastructure.
A new microfluidic cell culture device allows researchers to study the development of drug resistance in cancer cells in real-time. The system, developed by Princeton University and Johns Hopkins Medical Institute, provides a tool for preclinical cancer drug development and screening.
Researchers have successfully enhanced spider silk's strength and toughness by incorporating carbon nanotubes or graphene. The resulting silk boasts up to three times the strength and ten times the toughness of regular material.
A new study reveals the US Office of Nuclear Energy's budget history, showing a lack of effective allocation of resources and failure to support innovative research. The researchers recommend a new approach with stricter programmatic discipline and transparent evaluation processes to identify promising reactor concepts.
Scientists create user-interactive electronic skin that changes color in response to subtle strain levels, enabling potential uses in robotics, prosthetics, and wearables. Graphene-based flexible electronics make the technology possible with a reduced level of mechanical strain.
Researchers have identified a universal mechanism behind bone cell organization, revealing a quantitative framework to assess bone quality. The study shows that different bone types exhibit varying levels of connectivity but similar efficiency in intercellular transport and communication.
Researchers used mathematical modeling to examine patterns in lung cancer metastases, revealing a preferential pattern for brain spread in patients with EGFR mutations. The findings suggest that Markov modeling could help predict metastatic spread and personalize treatment for non-small cell lung cancer patients.
A new study from Lund University found that four actions have the greatest impact on reducing greenhouse gas emissions: a plant-based diet, avoiding air travel, living car-free, and having smaller families. These actions can save up to 2.4 tonnes of CO2 equivalent per year.
A Danish-led study found that microbes in Greenland's ice sheet can resist and degrade globally-emitted pollutants like mercury, lead, and PAHs. The research highlights the need for more attention to the release of anthropogenic contaminants as climate change melts the ice sheets.
A new study reveals that 65% of global irrigated areas are impacted by urban wastewater flows, with 29.3 million hectares in countries with limited treatment exposing widespread consumer and farmer health risks. The findings call for urgent investments in improved sanitation to mitigate public health threats.
Researchers studied owls' wings to understand how their unique features can reduce noise in machines like wind turbines and aircraft. Leading-edge serrations can control airflow, improving aerodynamic force and sound production, but a trade-off exists between performance and noise suppression.
A new method of measuring sports-related muscle injury uses localised bioimpedance measurement (L-BIA) to quantify damage and provide accurate return-to-play time. The study found L-BIA enables clinicians to differentiate between two types of partial muscle tears that cannot be distinguished using MRI.
A research team found that unusual tropical conditions, the stratospheric polar vortex, and climate warming contributed to record UK rainfall in winter 2013-14. The study shows a 10-15% contribution from climate change, with main causes being atmospheric dynamics linking the UK to the tropics and stratosphere.
A team from Ireland developed a collagen scaffold loaded with an antibiotic to prevent bacterial biofilm formation, successfully targeting Escherichia coli and Staphylococcus epidermidis. The discovery marks a significant step forward in combating implant infections, which can cause long hospitalization periods and additional surgeries.
A new study found that reducing meat consumption and adopting organic farming methods can help mitigate environmental degradation, but not at the expense of land use and energy efficiency. The researchers suggest combining different production systems to create a more sustainable agricultural system.
A new study reveals that increasing temperatures are eroding the natural buffer against malaria transmission in Ethiopia's highlands. As temperatures rise above 18°C and 15°C, conditions become favorable for the disease to spread, posing a significant threat to the country's population.
Researchers have successfully transmitted quantum key distribution signals from a ground transmitter to a moving aircraft, paving the way for global-scale quantum communication. The system achieved secure keys up to 868 kb in length and demonstrated viability of satellite-based quantum communications.
A study found that reindeer grazing in the Arctic tundra can increase surface albedo, leading to a decrease in net radiation and a potential cooling effect on climate. The researchers used land surface computer modeling and field measurements to estimate the impact of reindeer activity on vegetation characteristics.
Researchers propose a new type of traveling wave pattern that can adapt to varying system sizes, shedding light on bacterial cell division processes. The 'stretchable map' theory offers insights into protein self-organization and surface mapping on growing cells.
A team of students has demonstrated that water-filled balloons can be made to bounce on a bed of nails, exhibiting similar behavior to tiny water droplets. The study, published in the European Journal of Physics, used large store-bought party balloons and recorded impacts at different velocities.
Researchers have discovered evidence of Deepwater Horizon oil in land-based birds, highlighting a link between the ocean spill and a terrestrial ecosystem. The study used carbon dating methods to analyze feathers and gut contents of sea sparrows from affected areas.
Researchers are exploring the practical uses of rainbows in weather forecasting and combustion engine efficiency. A comprehensive review highlights the importance of simulating rainbows using mathematical modeling. The study also provides tips for capturing rainbows on camera, making them a rare and special phenomenon.
Scientists warn that global warming signals are masked by random weather variations, but expect increased snowfall in Antarctica due to higher moisture levels. The study concludes that the human influence on Antarctic surface mass balance will become detectable within the next few decades.
Researchers propose large-scale metamaterials as seismic shields to protect areas from earthquake damage. The shields work by inhibiting the propagation of incoming seismic waves through interference effects.