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כתבות אחרונות מאתר 'Phys'
Phys

Protein degradation rate helps explain why humans develop more slowly than mice‎

Humans develop at a slower rate than other mammalian species, like mice, but scientists are still trying to understand the molecular basis of these differences. Now, researchers from the Ebisuya Group at EMBL Barcelona and PoL-TU Dresden and from the Savitski Team at EMBL Heidelberg show that across 4,000 proteins shared between humans and mice, there is a clear tendency for protein degradation in humans to be slower than in mice.

00:10
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Phys

Could teaching assistants be an overlooked teacher pipeline? New research says yes‎

As school districts continue searching for ways to recruit and retain teachers, new research from UNC-Chapel Hill suggests one promising pipeline may already be in classrooms: teaching assistants.

23:12
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Phys

Collaborative drawing offers new insights into how strangers become friends‎

The closer two people grow, the more alike their brains work—or so the assumption goes. Two ETH Zurich studies challenge this idea by examining the brain activity of younger and older adults who drew together over several weeks. Despite growing closer, the similarity of their brain activity did not simply increase.

22:18
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Phys

Oldest human brain cells grown in lab 'recorded passage of time'‎

Peppercorn-sized clumps of human brain cells grown in a lab for a record seven years aged similarly to those inside our heads, suggesting they "recorded the passage of time," scientists said Wednesday.

20:20
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Phys

JWST peeks at Callisto's ancient scars‎

Of Jupiter's four Galilean moons, Callisto is the one that gets the least attention. Io is constantly being resurfaced by volcanoes. Europa has a giant liquid water ocean. And Ganymede has its own magnetic field that interacts with its parent planet in weird ways. Callisto, by comparison, seems sedate, with its ancient, crater-saturated surface seemingly frozen in time. But new data from the James Webb Space Telescope (JWST) shows that even this most benign of the Big Four moons is more active than previously realized.

18:31
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Phys

Hot temperatures can dull blue morpho butterflies' iridescent scales‎

Blue morpho butterflies have captivated the human eye for centuries. We even have one as an emoji on our phones. In a recent experiment, researchers at the Smithsonian Tropical Research Institute (STRI) documented for the first time that hot temperatures during development can reduce the brightness of their iridescence. At hot temperatures, such as those projected in future warming scenarios, the structures responsible for their iridescent color could change enough that common bird predators and other butterflies of the same species would likely see a color change.

18:31
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