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Phys

5,000-year-old bureaucracy: Over 7,000 prehistoric seal impressions uncovered in western Iran‎

In the journal Antiquity, Dr. Shokouh Khosravi published preliminary findings of the largest known corpus of prehistoric seal impressions in the entire ancient world. The corpus, made up of over 7,000 seal impressions, more than 200 clay figurines, clay tokens, and two cylinder seals, dates back to 5,000 years ago and speaks to the fact that Tapeh Tyalineh was likely an important center involved in extensive commercial exchange, necessitating a large administrative system that likely left behind these seals.

18:02
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Phys

Thousands of paywalled research papers could be freed with this simple fix‎

Publicly funded research underpins much of daily life, from policy decisions to innovation and public debate. When research remains inaccessible, its value is diminished. Australia has made real progress on open access to research. In 2024, around 59% of papers authored by researchers in Australia were freely available online.

18:02
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Phys

Quantum reservoir computing peaks at the edge of many-body chaos, study suggests‎

Reservoir computing is a promising machine learning-based approach for the analysis of data that changes over time, such as weather patterns, recorded speech or stock market trends. Classical reservoir computing techniques are known to perform best at the "edge of chaos," or in simpler terms, at a "sweet spot" in which the behavior of systems is neither entirely predictable (i.e., order) nor completely unpredictable (i.e., chaos).

16:31
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Phys

Martian volcanoes could be hiding massive glaciers under a blanket of ash‎

When we think of ice on Mars, we typically think of the poles, where we can see it visibly through probes and even ground-based telescopes. But the poles are hard to access, and even more so given the restrictions on exploration there due to potential biological contamination. Scientists have long hoped to find water closer to the equator, making it more accessible to human explorers. There are parts of the mid-latitudes of Mars that appear to be glaciers covered by thick layers of dust and rock.

16:31
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Phys

In sea urchin and salmon sperm, pH value regulates whether they remain immotile or swim‎

A study by the Max Planck Institute for Multidisciplinary Sciences and the University of Bonn has shown that pH value is crucial for sperm motility in sea urchins and salmon. An increase in pH activates the enzyme adenylyl cyclase (sAC), which produces the messenger substance cAMP, thereby regulating sperm motility. This mechanism may be widespread among many marine invertebrates and fish. The researchers' findings have now been published in the Proceedings of the National Academy of Sciences.

16:31
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Phys

Last nuclear weapons limits expired—pushing world toward new arms race‎

For the first time in more than half a century, there are no binding restraints on the buildup of the largest nuclear forces on Earth. The New START treaty expired on Feb. 5, 2026, ending the last agreed limits on U.S. and Russian nuclear forces.

16:31
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Phys

Carefree bachelor or incel: Men are judged for being single, too‎

Reports of widespread "dating burnout" and a cultural shift toward heteropessimism—a feeling of disappointment or despair at the state of relations between men and women—have caused panic in the media and dating apps.

15:01
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