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כתבות אחרונות מאתר 'Phys'
Phys

Human-centered framework cuts child development tests to eight minutes across four skill areas‎

Educators and researchers around the world, especially in countries with limited resources, need cost-effective, scalable tools for assessing early child development. Direct assessments, a commonly used approach, require children to complete a range of activities that measure academic, physical, and social-emotional skills. These assessments paint a nuanced picture of early child development and are useful to evaluate programs and policies. However, administering direct assessments often takes 30 or more minutes, making them impractical for measuring large populations. Practitioners and researchers need more practical methods.

01:04
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Phys

Tiny fossils found in 1.7-billion‑year‑old mud yield clues to the evolution of complex life‎

Stored in an open-air warehouse in tropical Darwin, Australia, are dozens of trays containing cylindrical cores of rock. They are from drill holes bored hundreds of meters below the surface by mineral exploration companies decades ago.

00:04
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Phys

Controlled experiments reveal how nuclear fallout particles form‎

In less than a millionth of a second after a nuclear detonation or a severe nuclear reactor accident, an enormous burst of energy heats the surrounding air and materials. Everything in the vicinity is vaporized into a hot, glowing cloud of gas and plasma. As that nuclear fireball expands, it mixes with air, begins to cool and condenses into tiny solid particles—creating nuclear fallout.

23:12
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Phys

After the flames, wildfires pollute drinking water for years‎

When people think about wildfires, they usually think about flames, smoke and evacuations. However, for many communities, some of the most important damage begins after the fire has passed.

23:12
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Phys

'The Silence of the Lambs' introduced the world to forensic entomology—but how much has changed since?‎

In the early 1990s, crime-loving television audiences could choose mainly between cozy, fictional detective series such as Columbo and Murder, She Wrote. The US docuseries Unsolved Mysteries brought a few real cold-case investigations to light, but coverage of forensic science on screen was still relatively simple.

22:09
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Phys

'Permanently wet' coating method could transform wastewater treatment by helping bacteria survive better‎

Living bacteria embedded in coatings could clean wastewater, capture carbon and generate biofuels—but only if they survive the manufacturing process. Researchers at the University of Surrey and the University of Warwick have developed a method that keeps bacteria submerged throughout coating formation, increasing the number of surviving cells by around 500 times compared to conventional approaches.

21:20
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Phys

Ancient tooth proteins suggest Homo erectus may have left a genetic legacy in people today‎

For most of the 20th century, the model of human origins was a tree: with the trunk dividing into branches, and then twigs. Each species of human relative (hominin) was a neat, single branch.

21:20
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Phys

Honeybees reveal Weber's law in flight when choosing paths‎

Honeybees are among the widely studied insects, due to their sophisticated, hierarchical social organization and their essential ecological role. Bees can move swiftly in natural environments, passing through narrow openings and identifying the best paths to reach their destinations without colliding with other objects.

20:39
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Phys

As corporations race for the stars, we need international collaboration on space governance‎

The science academies of G7 member countries have identified international space governance as a pressing issue for the G7 Leaders' Summit, to be held from June 15–17 in Evian, France.

19:43
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Phys

The first signs of human cremation may date back 100,000 years‎

The latest discoveries by an international research team, which includes Academy Research Fellow Ferhat Kaya from the University of Oulu, Finland, offer a detailed view of how early humans lived, moved, and adapted to their environment 100,000 years ago. The group has been studying the Afar Rift since 1981. The study is published in the journal Proceedings of the National Academy of Sciences.

19:10
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