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Phys.org / From stellar engines to Dyson bubbles, alien megastructures could hold themselves together under the right conditions
New theoretical models have strengthened the case that immense, energy-harvesting structures orbiting their host stars could exist in principle in distant stellar systems. With the right engineering precautions, calculations ...
Phys.org / Amazon Leo satellites exceed brightness limits, study finds
Seeing a satellite zip across the night sky can be a fascinating sight. However, what may be spectacular for people on the ground is becoming a major problem for astronomers. A new study published on the arXiv preprint server ...
Phys.org / Caribbean heat waves intensify over five decades, study finds
A new study led by climatologists at the University at Albany has found that extreme heat waves across the Caribbean are becoming significantly more frequent, longer and severe. This study examined extreme summer heat waves ...
Phys.org / Multiwavelength monitoring reveals distant blazar OP 313's behavior
An international team of astronomers has analyzed the data from long-term multiwavelength monitoring of a distant blazar known as OP 313. Results of the new study, published January 18 on the arXiv preprint server, shed more ...
Phys.org / Photocatalysis enables direct coupling of native sugars and N-heteroarenes
Researchers from the National University of Singapore (NUS) have developed a "capping-and-coupling" strategy to transform naturally occurring (native) sugars directly into compounds known as C-heteroaryl glycosides. This ...
Medical Xpress / Bioelectronic wristband offers continuous, objective, real-time stress monitoring
Researchers at the University of California, Irvine have developed a multimodal, bioelectronic wrist-worn device for objective, continuous, real-time monitoring of stress. The Smart Quantitative and Comprehensive Stress Assessor ...
Phys.org / The Great Mongolian Road: Japanese Imperial Army maps reveal first detailed documentation
In a study published in the Journal of Historical Geography, researchers Dr. Chris McCarthy and his colleagues have documented, for the first time, the Great Mongolian Road, a major yet understudied east-west caravan route ...
Phys.org / Flying gurnard grunts and flares fins to communicate, camera study confirms
Researchers have just published a study demonstrating that the flying gurnard (Dactylopterus volitans) emits sounds while simultaneously performing movements to communicate—a discovery that enriches our knowledge about ...
Phys.org / 'Jerk' volcano early warning method uses single seismometer to detect magma movement
Forecasting volcanic eruptions in time to alert authorities and populations remains a major global challenge. In a study published in Nature Communications, researchers and engineers from the Institut de Physique du Globe ...
Phys.org / Male or female? How one frog gene 'hijacked' sex determination about 20 million years ago
Early in development, many animals pick a team—male or female—based on their genetics, and, with time, acquire the characteristics to match. New research from the Marine Biological Laboratory (MBL) explores how one species ...
Medical Xpress / Is everyday school life more stressful for teenagers than a global pandemic?
Lockdowns isolated teenagers from friends, disrupted their routines, and kept them at home with daily reports of bad news. So most people assume teenagers felt worse during COVID-19 lockdowns, but a Tokyo study shows the ...
Phys.org / Scientists just mapped the family tree of all 11,000 bird species—and you can explore it
The Cornell Lab of Ornithology today announced the release of a new online tool for studying biodiversity and the evolutionary relationships among birds: the illustrated Birds of the World Phylogeny Explorer. Available on ...
