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Phys.org / Early-universe plasma may have stopped dark photons from heating cosmos
A new paper published in Physical Review Letters reveals that a leading dark matter candidate—the hypothetical "dark photon"—would not have heated the early universe as previously thought. The finding opens a vast region ...
Phys.org / How does wildfire smoke affect the economy?
Wildfires in the United States are getting bigger, and the season is getting longer, fueled by hotter and drier weather from climate change. Even when fires are hundreds of miles away, wildfire smoke can still harm people's ...
Phys.org / Layered rock in India shows potential signs of microbial life dating to 3.5 billion years ago
A team of researchers reports that they may have found rock containing some of the earliest forms of microbial life on Earth. Their study, published in the Proceedings of the National Academy of Sciences, describes the biosignatures ...
Tech Xplore / Assistance systems to fight shortage of skilled workforce: XR supports sight-impaired people at work
When people with a sight impairment cannot cope with everyday tasks, it is often not due to a lack of competence, but rather because of impediments existing in their environment. A mobile assistance system, which is currently ...
Medical Xpress / Heart stress based on NT-proBNP changes may improve CVD risk stratification
For community-dwelling older adults, longitudinal changes in N-terminal pro-B-type natriuretic peptide (NT-proBNP) concentrations (heart stress [HS]) may improve risk stratification for cardiovascular disease (CVD) and mortality, ...
Phys.org / US moves to open vast tracts of pristine forests to logging
President Donald Trump's administration on Tuesday proposed a rule change that would open 44 million acres (about 68,750 square miles) of wild, undisturbed forest for road construction and logging.
Phys.org / AI agents coordinate behavior based on majority opinion—even when said opinions are meaningless
A new study published in Science Advances takes a closer look at how AI agents' choices are influenced by their peers. The team found that more advanced models tend to follow the majority when shown other agents' choices, ...
Phys.org / Rethinking how we name and classify our human ancestors following recent evolutionary discoveries
Recent advances in our understanding of human evolution challenge the way we currently name and classify our ancestors, according to new research from Monash University. The study, published in the American Journal of Biological ...
Phys.org / Ancient Jomon DNA reveals a hidden Ice Age survival genetic toolkit
Between 29,000 and 19,000 years ago, the planet experienced some of its coldest temperatures and drastic landscape changes at the peak of the Ice Age, during the Last Glacial Maximum (LGM), the period of most extensive global ...
Phys.org / Ruby-forming mineral found by Mars rover hints at violent impacts
So far, most of the minerals found on Mars tell a story of lava poured out by ancient volcanoes, followed by long stretches in which water trickled through and slowly reshaped the rock. However, some rocks scattered across ...
Phys.org / A new approach to building noise-resistant quantum sensors
Quantum sensors, devices that collect measurements by exploiting quantum-mechanical phenomena, could potentially detect extremely weak magnetic, gravitational and electromagnetic signals with greater sensitivity than classical ...
Phys.org / Unusual superconductivity could emerge in valley-imbalanced rhombohedral graphene
Superconductors are materials in which electrical current flows with a resistance of zero, typically below specific temperatures. In conventional superconductors, this state of matter emerges when two electrons bind together ...