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כתבות אחרונות מאתר 'Phys'
Phys

New warning system forecasts wildlife heat risk up to nine months ahead‎

An international group of scientists led by Josep M. Serra-Diaz, researcher at the Botanical Institute of Barcelona (IBB, CSIC-MCNB), has developed the first global early warning system capable of forecasting when and where vertebrate species will be exposed to unprecedented heat up to nine months in advance. The study, published in Nature Climate Change, demonstrates how operational climate prediction tools can be repurposed to anticipate biological risks in near-real time, providing the kind of foresight needed as extreme heat events intensify worldwide.

00:52
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Phys

Distinctive language reveals likely conspiracy-community users across 500 million Reddit comments‎

Users who participate in online communities linked to conspiracy theories show distinctive linguistic characteristics even when discussing apparently neutral topics, such as films, music, cooking or science, and even before they take part in conspiracy communities.

00:41
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Phys

Breaking tunnel vision, imaging AI lifts fluorescence image restoration accuracy and speed‎

Recent years have witnessed great advances in applying deep learning to improve fluorescence microscopy imaging. However, enhancing the fidelity of image restoration networks and improving their robustness under fluorescence noise remain significant challenges.

00:41
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Phys

Hardy ice plant's optical innovation inspires reflective design possibilities‎

Nature is filled with remarkable visual phenomena created by microscopic surface structures that interact with light in fascinating ways. The iridescent wings of butterflies, the shimmering feathers of birds and the glossy surfaces of flower petals are all examples of how living organisms control the reflection, absorption and scattering of light. These optical effects are not only visually striking but also serve important biological functions, including attracting pollinators, communication, camouflage and protection from environmental stress. Understanding these naturally occurring photonic structures has become an important area of research, as they provide inspiration for the development of advanced biomimetic materials and optical technologies.

00:31
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Phys

Precision measurement under impact—when the balance itself becomes the object of measurement‎

How do you take measurements using one of the most sensitive scales in the world? Researchers at TU Wien have demonstrated how the measurement process affects not only the object being measured but also the scale itself, and where the absolute limits of precision lie.

00:27
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Phys

Real-time data assimilation system outperforms flood early warning system‎

Researchers at the Institute of Industrial Science, the University of Tokyo (UTokyo-IIS), have developed a real-time data assimilation system that substantially improves streamflow and flood forecasting accuracy across Japan. This new data assimilation system outperforms Japan's current early warning system. Compared with the previous early warning system, the new data assimilation system yields improved forecasts for 80% of the major river reaches in Japan and enables reliable flood prediction across more than 60% of the observation stations in Japan.

00:27
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Phys

Nature's 'master painters': Study reveals how damselflies break optical barriers to create saturated colors‎

Scientists at Ben-Gurion University of the Negev (BGU) have uncovered for the first time the "ingenious" biological strategies that allow blue-tailed damselflies to produce strikingly vivid, angle-independent colors. The study, published in the Proceedings of the National Academy of Sciences, provides a new blueprint for creating sustainable, highly saturated photonic materials that could replace toxic synthetic pigments in industries ranging from cosmetics to textiles.

00:01
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Phys

The fifth national climate assessment: Report shows change is here, but there is hope‎

The Fifth National Climate Assessment was released this morning, with dire messaging around the need for the immediate reduction of greenhouse gas emissions—but also hope, with advances in technology and increased adoption of renewable energy since the last report was issued in 2018.

00:01
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Phys

Scientists uncover RNA's hidden role as protein chaperone‎

Proteins are how cells get work done. They carry out nearly every important cellular task, from ferrying messages to controlling which genes are turned on or off. And in order for proteins to perform their various roles, the strings of amino acids that make them up need to be folded into the correct shape.

23:42
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Phys

eDNA metabarcoding evaluated for fish diversity assessment‎

Environmental DNA (eDNA) metabarcoding has emerged as a powerful tool for monitoring aquatic biodiversity, enabling researchers to identify fish species from traces of DNA found in water without using invasive techniques on fish. Although this technique is gaining traction, it introduces certain biases and uncertainties at various stages, thereby affecting the production of reliable eDNA results. This challenge underscores the need to understand the technique's strengths and limitations.

23:42
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