A team of NASA-sponsored scientists and engineers has developed a novel approach to observing high-energy particles in the near-Earth space environment, incorporating miniaturized sensors into a compact, multiview particle-detection instrument unlike any before it.
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When stars similar to the Sun grow old, they expand into red giants. During this phase, their outer layers churn and gradually drift into space, while the dense cores left behind shrink into white dwarfs. Because this is the fate of most stars, white dwarfs are among the most common stellar remnants in the universe.
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McGill researchers have found that dangerous crowd conditions leading to surges and stampedes may not emerge suddenly but instead develop gradually, as repeated physical contact and pushing accumulate and become synchronized among nearby individuals. Recognizing how these conditions arise could help organizers strengthen security, site management and evacuation planning, reducing the likelihood of injuries during large-scale public events.
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Marine biologists have observed the Arctic bobtail squid in its natural habitat in the North Atlantic Ocean for the first time, including the rare discovery of a mature female with eggs. Dr Paige Maroni, from The University of Western Australia's School of Biological Sciences, is lead author of the study published in Polar Biology, which recorded the Arctic bobtail squid, Rossia moelleri, in Northeast Greenland National Park.
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The approach could one day be delivered via a mask worn at home pocketlight/Getty Images
Inhaling high levels of carbon dioxide intermittently for half an hour flushes proteins linked to Alzheimer’s disease out of the brain, a small study has found. Exposure to the gas changes how blood vessels in the brain constrict and dilate while we’re awake, mimicking activity that occurs during deep sleep. This then turbocharges the glymphatic system to remove the build-up of waste products that could cause harm.
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Classrooms often fall silent when the teacher poses a question. The pause is not always due to a lack of knowledge. Students may be hesitant, unsure, shy or simply unwilling to participate, and these feelings are often shown through subtle cues such as gaze aversion, delayed responses, posture, facial expressions or quiet laughter.
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Researchers from Manchester and Canada have shown that the claim by the authors of a study published earlier this year that most of its participants had experienced parental alienating behaviors during childhood is seriously misleading. Claims in the study that people affected by parental alienating behaviors showed greater signs of stress, PTSD and depression are also challenged by the team from The University of Manchester and the University of New Brunswick.
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In everyday life, people often joke about "stalking" someone on social media or describe someone's behavior as a bit "stalky." But these casual uses of the word can blur the reality of stalking as a serious crime.
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Researchers from Heinrich Heine University Düsseldorf (HHU) and Kiel University (CAU) have examined immune system function in an early-branching animal—a sea anemone. They discovered that the immune systems of these animals can selectively distinguish between different microorganisms, protecting beneficial bacteria from harmful bacteria—an ability that has been attributed only to vertebrates to date. So-called "nematosomes" play an important role in this process.
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Hotels have long encouraged guests to reuse towels, limit linen changes and conserve energy. Yet tourism remains a significant source of carbon emissions, and voluntary sustainability programs often struggle to achieve lasting behavior change. New research suggests a different approach may be more effective: connecting the environmental impact of a stay directly to what travelers pay.
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