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כתבות אחרונות מאתר 'Phys'
Phys

Rethinking plant photoprotection: New insights into antenna protein CP26‎

Plants must carefully strike a balance between harvesting sunlight to fuel photosynthesis and protecting themselves from light damage. Part of this balancing act is performed by antenna proteins that are bound to light-harvesting molecules inside plant chloroplasts. Mostly known for harvesting energy from sunlight, some antenna proteins can dissipate excess absorbed energy as heat through a photoprotection mechanism called non-photochemical quenching (NPQ).

03:46
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Phys

Q&A: Boosting NASA's Swift Observatory to support continued space observation‎

NASA's "rapid-response" space telescope is slowly falling out of orbit, but a daring mission this summer could allow the Neil Gehrels Swift Observatory to continue scanning the sky for many more years to come. In the first mission of its kind, a spacecraft will launch from Earth and rendezvous with Swift to boost it to a higher altitude and extend its life.

03:21
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Phys

New method enables accurate sequencing of short peptides hidden in food and human body‎

Our food and our bodies are full of tiny protein fragments called peptides. These small chains of amino acids act as biological messengers, influencing processes ranging from sensory perception to physiological functions.

03:03
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Phys

Vertical marine heat wave study offers classification scheme for coastal resource management‎

Marine heat waves (MHWs) are events characterized by prolonged warm coastal and ocean conditions with wide-ranging impacts on ecosystem health and associated industries. While research on MHWs has historically relied on surface-water data from satellite observations and buoy records, new research from the Batten School of Coastal & Marine Sciences & VIMS highlights the need to—quite literally—go deeper.

03:03
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Phys

AI can clone your voice. Why that's powerful—and dangerous‎

Using artificial intelligence, scammers can duplicate someone's voice with just seconds of audio, says the University of Cincinnati's Kimberly Hyun. Impostor scams are one of the most common forms of fraud, according to the Federal Trade Commission.

02:43
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Phys

Intensive nickel mining has transformed microbial biodiversity of Thio Lagoon in New Caledonia‎

A study carried out by scientists from Ifremer, IRD, the universities of Western Brittany (UBO) and Bordeaux, CNRS, and the University of Tartu (Estonia) reveals the impact of nickel mining on the coastal ecosystems of New Caledonia. Published in the journal Communications Earth & Environment, this research shows that starting in the 1950s, the mechanization of mining operations led to a sharp increase in sediment inputs into the Thio Lagoon and a disruption of microbial communities that persists to this day.

02:43
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Phys

Webb and Hubble reveal the history of a relic of Milky Way's formation‎

Researchers using two of humanity's most powerful observatories—NASA's James Webb and Hubble Space Telescopes—have definitively shown that Terzan 5 is not a globular star cluster, as it was once classified, offering new insight into how galaxies like our own form and evolve over time.

02:36
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Phys

Report reveals how digital tools are transforming biodiversity crisis response‎

Scientists who study plant physiology and evolution have a new tool in their toolkit: a machine learning algorithm that can scan digital plant specimen collections and quickly measure leaf size and thickness.

02:23
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Phys

Cotton's roots traced to Yucatan Peninsula, where wild gene pool runs deepest‎

There's nothing like this in nature, Jonathan Wendel said as he showed a visitor in his Bessey Hall office the long white puffs billowing from a cotton boll—the protective flower capsule of the plant cultivated by humans for thousands of years. In the wild, cotton bolls are far smaller and hold darker, coarser and shorter fibers.

02:23
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Phys

Santa Cruz trail study reveals how mountain lions and outdoor recreation can safely share spaces‎

California's iconic Santa Cruz Mountains are an outdoor recreation wonderland. With a world-class network of hiking, mountain biking and equestrian trails, they draw millions of visitors each year from neighboring Santa Cruz, Santa Clara, San Francisco and San Mateo counties.

02:12
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