ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

Landscape water velocities across Europe reshape nitrogen pollution risk under climate change‎

Nitrate pollution is a growing global environmental challenge due to the extensive use of fertilizer. A study published in Science, led by the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) with the Helmholtz Center for Environmental Research (UFZ), shows that both the amount of water moving through landscapes and how fast it moves play a key role in nitrogen pollution risk.

20:01
תפריט כתבה
Phys

Nuclear clocks tick for the first time‎

Two independent research teams have achieved a longstanding goal in physics: building a working nuclear clock. The devices, developed by Beichen Huang and colleagues at Tsinghua University and by Luca Toscani De Col and colleagues at the Vienna Center for Quantum Science and Technology in Austria, exploit the nucleus of a thorium-229 atom to keep time with extraordinary precision—possibly surpassing even the best atomic clocks available today.

20:01
תפריט כתבה
Phys

Horse owners' personality and attachment style shape how they interact with and care for their horses‎

A new study shows that horse owners' psychological characteristics, including their attachment styles and personality traits, are systematically linked to how frequently they ride, train, and spend quality time with their horses, as well as the equipment they choose to use. The findings offer new insights into how human psychology shapes horse welfare and management.

19:54
תפריט כתבה
Phys

Carbon dioxide unlocks safer oxidation chemistry under room-temperature conditions‎

Oxidation reactions are indispensable to the chemical industry, but from a process safety perspective, they are among the most challenging transformations. A research team at the University of Bayreuth, working in collaboration with international partners, has now introduced a fundamentally new approach to oxidation reactions in which carbon dioxide is used as the oxygen source for chemical synthesis. This makes the reaction both safer and more sustainable. The researchers report on this new approach in Science.

19:54
תפריט כתבה
Phys

Engineered bacterium turns potato starch into biodegradable plastic in 24 hours‎

Every year, hundreds of millions of tons of petrochemical-based plastics are produced, much of which ends up in the environment or is incinerated. This exacerbates greenhouse gas emissions and the environmental crisis caused by plastic pollution. Now, a study led by the University of Barcelona has produced a biodegradable bioplastic of high industrial value—polyhydroxybutyrate, or PHB—from unprocessed potato starch in a single 24-hour step, a strategic breakthrough that could help reduce dependence on oil and the volume of persistent plastic waste.

19:25
תפריט כתבה
Phys

Dragonfly and damselfly migrations crisscross planet, with 100 species confirmed‎

Migration flights of dragonflies and damselflies crisscross much of our planet, new research reveals. Scientists from the universities of Exeter and Lund reviewed global evidence and found 100 dragonfly and damselfly species that migrate, and a further 85 possible migratory species. This means that only 1.5% of all dragonfly and damselfly species migrate (or 2.9% including possible migrants)—but the migrations can include millions of individuals, and some travel thousands of kilometers. The study is published in Biological Reviews.

19:02
תפריט כתבה
Phys

Climate change is causing fish to move to cooler water—what if their escape route is blocked?‎

Around the world, ocean warming is causing fish to move poleward in search of cooler water.

18:41
תפריט כתבה
Phys

AI tracks missing hydrogen atoms in crystals with 97% success rate‎

Artificial intelligence is often used to generate images. In research, specialized AI models are used for scientific applications—for example, to predict the positions of atoms in materials. The MatterGen model developed by Microsoft can generate complex crystal structures from just a few pieces of information—which atoms should be present and in what proportions—and researchers can then use these structures for computer simulations of new materials.

18:24
תפריט כתבה
Phys

A cornerstone of Milky Way history may need rewriting with evidence of multiple ancient mergers‎

Astronomers may have uncovered new details about one of the Milky Way's most important ancient collisions. Using data from the Dark Energy Spectroscopic Instrument (DESI) and a new clustering algorithm, researchers have found evidence suggesting the famous Gaia-Sausage/Enceladus structure (GSE) has a far more complicated origin than previously thought.

18:02
תפריט כתבה
Phys

New findings complete first evolutionary history of all living millipede orders, dating back 460 million years‎

Long before vertebrates walked on land, millipedes had the place to themselves. Hundreds of millions of years before dinosaurs arrived, these early decomposers were helping establish Earth's terrestrial ecosystems. But despite their ancient history, scientists still hadn't fully unraveled their evolutionary story.

18:02
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור