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כתבות אחרונות מאתר 'Phys'
Phys

Beneath seagrass meadows, a shift in warming seas could decide which underwater habitats survive‎

On the western side of Lake Macquarie in New South Wales, Australia, sits Myuna Bay, a quiet bay with meadows of seagrass waving beneath the water. The most common marine plant species you find there is Zostera muelleri. It has long ribbon-like leaves that grow from stems (called rhizomes) buried beneath the sediment and provides important shelter for small fish, shrimp and crabs.

01:50
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Phys

When retailers wait to reveal prices, shoppers fill in the blanks‎

Sometimes the price wasn't missing; its disclosure was just delayed. That's what Minzhe Xu, assistant professor of marketing in Iowa State University's Ivy College of Business, and his fellow researchers noticed when shopping online. A growing number of retailers were asking shoppers to take one more step—add to cart to see price, click to reveal, sign in to view price—before revealing an item's cost. The paper is published in the Journal of Consumer Research.

00:23
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Phys

Good vibrations for quantum communications: Engineers couple single phonon to single atomic spin‎

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated, for the first time, a single quantum of vibrational energy interacting with a single atomic spin, seeding a pathway to quantum technologies that use sound as an information carrier, instead of light or electricity. The results are published in Nature.

00:23
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Phys

Alaska's near‑record landslide tsunami sent a wave 1,580 feet up the fjord walls‎

On the evening of Aug. 9, 2025, passengers on the Hanse Explorer finished taking selfies and videos of the South Sawyer Glacier, and the ship headed back down the fjord. Twelve hours later, a landslide from the adjacent mountain unexpectedly collapsed into the fjord, initiating the second-highest tsunami in recorded history.

22:20
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Phys

Self‑destructive behavior among Hermann's tortoises on a Macedonian island is leading to 'demographic suicide'‎

On the strictly protected island of Golem Grad in North Macedonia, the tortoises are destroying their own population. During prolonged courtship, aggressive males are exhausting the females and frequently pushing them off the cliffs. Consequently, there are now one hundred males for every female capable of laying eggs. This is the only known example of demographic suicide in the wild to date.

21:50
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Phys

Radio telescopes confirm 3.3-million-light-year halo in unusually quiet galaxy cluster‎

Astronomers have employed the upgraded Giant Metrewave Radio Telescope (uGMRT) and the MeerKAT radio telescope to observe a galaxy cluster known as RXCJ0232–4420. Results of the new observations, published April 29 on the arXiv pre-print server, deliver important insights into the nature of this cluster.

21:19
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Phys

Under mushroom caps, 17-plus bacterial species help drive stubborn blotch disease‎

A University of Florida study has made a key discovery in understanding a disease that for over a century has plagued the white button mushroom—a nutrient-dense vegetable that is valued for its versatility and health benefits. The study is published in the journal Microbiological Research.

20:18
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