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כתבות אחרונות מאתר 'Phys'
Phys

Self-propelled actin filaments may explain how cells change shape spontaneously‎

Cells can spontaneously change shape even without external signals, but the underlying mechanisms behind this form of self-organization have remained unclear. Now, researchers from Japan have discovered self-propelled treadmilling actin filaments (SpTAs), mobile protein assemblies that function as self-propelled particles. The team's work shows that even though SpTAs move randomly, they push the cell membrane outward to grow protrusions, thereby defining the overall shape of the cell. The work appears in EMBO Reports.

12:09
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Phys

Space shuttle ready for new mission in California‎

The space shuttle Endeavour, which took astronauts into orbit 25 times, went on display at the California Science Center on its final mission Wednesday.

11:52
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Phys

Australia's under-16 social media ban shows little early effect on teen use: Research‎

Australia's social media ban for under-16s has had little impact on teenagers' scrolling habits, researchers said Thursday in one of the first evaluations of the world-leading measures.

11:21
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Phys

Secret cameras, mics and AI reveal rare Cambodia wildlife‎

Above the patter of rain cascading through the jungle canopy comes the haunting call of a pileated gibbon singing to fend off intruders in Cambodia's Cardamom Mountains.

11:21
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Phys

Shorter front-leg strides can be an early warning sign of dementia in senior dogs‎

Scientists have shown that the stride length of the front legs (but not the hind legs) of senior and geriatric dogs decreases as their cognitive performance worsens. In contrast, chronological age itself was a poor predictor of stride length. A similar reduction in step length has been well documented in people with dementia. These results suggest that a decline in stride length could be an early warning sign of canine dementia, and so an informative new tool for veterinarians.

07:14
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Phys

Precious drops: Spray helps crop farmers facing declining rainfall‎

A spray made from a biodegradable polymer capable of capturing and redirecting water to crop seeds could be the key to drought-proofing Western Australian farms.

06:30
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Phys

Designer proteins unlock near-infrared and SWIR glow for deeper tissue imaging‎

Researchers at the National Center for Tumor Diseases (NCT/UCC) in Dresden, including Oliver Bruns and Dr. Bernardo Arús, are participating in an international study that has, for the first time, developed novel proteins for near-infrared (NIR) and short-wave infrared imaging (SWIR). The research was conducted in collaboration with an international team that included chemistry Nobel laureate David Baker, who was honored in 2024 for his work on computational protein design. The study, with shared first authorship, was recently published in the Journal of the American Chemical Society.

05:50
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Phys

Ancient stories inform modern understanding of volcanic eruptions‎

A new international study has found that Indigenous oral traditions, some thousands of years old, hold valuable and often overlooked insights into volcanic eruptions—offering important lessons for modern disaster preparedness. The research, published in the journal Volcanica, was led by Museums Victoria Research Institute volcanologist Dr. Heather Handley and draws on case studies from Australia, Fiji, Hawai'i, Papua New Guinea, the Solomon Islands and Vanuatu to demonstrate how Traditional Knowledge and scientific data can be integrated to better understand volcanic history and hazards.

05:14
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Phys

'Fingerprints' of black hole's event horizon detected for first time‎

Scientists have detected the "fingerprints" of a black hole's event horizon—the boundary from which nothing can escape—for the first time, according to research published Wednesday.

04:27
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Phys

'Super-puff' planets lighter than candy floss discovered by international team‎

An international collaboration has discovered two of the lowest-density giant planets ever detected: rare "super-puff" planets with densities lower than candy floss. The study—led by the University of Oxford, in collaboration with Université Côte d'Azur/Observatoire de la Côte d'Azur and the University of Birmingham—has been published in Monthly Notices of the Royal Astronomical Society.

04:14
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