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כתבות אחרונות מאתר 'Phys'
Phys

Worm's radical transformation shows metamorphosis can change the functions of cells‎

A squishy worm that starts its life as something of a floating head in the Pacific Ocean is changing what scientists know about metamorphosis at the cellular level.

12:18
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Phys

AI model decodes cell signaling fingerprints across diverse cell types‎

As an embryo develops from a small cluster of stem cells, those once "blank slate" cells begin to take on more specialized roles like brain, liver or muscle cells and organize themselves into three-dimensional structures such as tissues and organs.

12:18
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Phys

Rearranged polymer chains create degradable materials with potential for stronger, tougher packaging‎

What if the key to making stronger, more sustainable plastics isn't changing their ingredients, but rearranging their molecules? Virginia Tech researchers have put that idea to the test, creating degradable polymers with a new molecular architecture that combines properties often difficult to achieve in one material: strength, toughness, flexibility and the ability to block oxygen.

12:18
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Phys

Kauai on tornado watch as Hurricane Lowell nears Hawaiian Islands‎

Residents of Kauai were warned to watch for tornadoes late Monday as Hurricane Lowell edged toward the westernmost Hawaiian Islands in the U.S. Pacific island chain, the National Weather Service said.

12:18
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Phys

Melting Svalbard glaciers may flush ancient methane from rocks beneath the ice‎

Meltwater rivers flowing from Svalbard glaciers are carrying ancient methane from rocks beneath the ice into the open air, new research published in Nature Communications shows.

12:18
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Phys

Super-resolution imaging reveals that cohesin prevents local mixing of compact, active genome domains‎

The human genome is about two meters (6.6 feet) long, yet it is folded inside a cell nucleus only about 10 micrometers in diameter. To fit into this tiny space, DNA is wrapped around histone proteins to form nucleosomes, which are further organized into chromatin. For decades, chromatin has often been described in two simple forms: euchromatin, which is active, open and accessible, and heterochromatin, which is more compact and repressed.

12:18
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Phys

Praying for rain as fires, haze plague Indonesian Borneo‎

Wildfires ravaging the Indonesian part of Borneo are choking communities as far away as Malaysia with putrid haze, testing the resources and resolve of those who must endure it.

12:18
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Phys

How beavers can help create fire breaks as part of a drought preparation plan‎

Most of the countryside around the Holnicote estate in Somerset has been dry and dusty for most of the summer. But one corner remains conspicuously green.

05:53
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Phys

Changing the antibiotic playbook to catch an ESKAPE artist‎

Nearly a century ago, a single colony of Staphylococcus aureus (S. aureus) helped launch the antibiotic age. In 1928, Alexander Fleming returned to his London lab to find that a stray mold had wiped out the Staphylococcus growing on one of his plates. The accident gave the world penicillin, ushering in the age of biomedicine and ensuring that an infected cut or scrape would not be fatal.

05:03
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Phys

Early Earth's auroral belts may have formed a natural ion-beam reactor for prebiotic chemistry‎

We usually think of auroras as beautiful lights in the night sky. I see them as visible traces of a connection between the sun, Earth's magnetic field and the atmosphere. This led me to an origin-of-life question: Could the planetary structure that produces auroras also have organized chemical reactions on early Earth?

03:55
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