ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

A rush for critical minerals echoes oil extraction injustice as harms fall on world's most vulnerable, scientists warn‎

Mining critical minerals such as lithium and cobalt fuels the "green" energy and digital transitions essential to meeting climate goals. But building the technologies that enable a sustainable future is generating severe, hidden environmental and health crises that the world is failing to track or address, warns a new report by the United Nations University Institute for Water, Environment and Health (UNU-INWEH), known as the UN's Think Tank on Water.

07:12
תפריט כתבה
Phys

You'd better start paying attention to the manosphere. You're living in it‎

As the United States and Israel launched their war on Iran in late February, the social media posts by some US national security agencies took a particular turn.

05:07
תפריט כתבה
Phys

Understanding how oxygen is delivered to tissues at the microscopic level‎

Researchers at Kyushu University and Institute of Science Tokyo have developed a new computational model that can simulate the transport of oxygen by red blood cells (RBCs) through tiny blood vessels—or capillaries—and their delivery to surrounding tissues. Published in the International Journal of Heat and Mass Transfer on April 27, 2026, the study reveals that RBCs can naturally adjust the amount of oxygen released based on local requirements and help maintain a stable level of oxygen throughout the body.

04:02
תפריט כתבה
Phys

Wingbeat radar signatures let AI sort bees, wasps and other insects‎

Pollinating insects are important for agriculture and ecological flourishing, but they are difficult to monitor, as identification is tricky, labor-intensive, and typically requires killing some insects. Publishing in PNAS Nexus, Adam Narbudowicz and colleagues use machine learning to identify insects by the changes in their radar reflection, caused by the flapping of their wings. The machine learning model extracted more than 70 harmonic, spectral, and temporal features from the Doppler radar signatures.

03:03
תפריט כתבה
Phys

Atlantic Forest's top predator faces a hidden collapse, and protected areas are no longer enough‎

In addition to habitat loss and illegal hunting, the jaguar (Panthera onca) faces another threat that increases its risk of extinction in the South American Atlantic Forest: food scarcity. A study by Brazilian researchers has found that the availability of jaguar prey is reduced, even in the protected areas of the biome, which covers approximately 15% of Brazil and extends across 17 states in the South, Southeast, and Northeast regions, as well as parts of Argentina and Paraguay. The paper is published in the journal Global Ecology and Conservation.

02:41
תפריט כתבה
Phys

How hard-surface feeding unlocked a burst of reef fish evolution 50 million years ago‎

Why are there so many species of coral reef fish? According to a new study, it's because about 50 million years ago, some fish figured out how to bite food from hard surfaces.

02:30
תפריט כתבה
Phys

Team develops modulator for compact photonic integrated circuits‎

Researchers at Skoltech have developed an ultra-compact electro-optic modulator based on silicon photonics and plasmonics that enables high-efficiency optical signal control within a small device footprint. The development could find applications in optical communication systems, analog-to-digital conversion, as well as in devices for generating and processing ultra-high-frequency signals based on photonic technologies.

02:30
תפריט כתבה
Phys

Scorpions' weapons are fortified with metal to suit their needs, research shows‎

Scorpions wield some of the natural world's most formidable built-in weapons, from crushing pincers to venomous stingers. Scientists have long known that these structures contain trace metals that strengthen them, but only a small fraction of the roughly 3,000 scorpions have ever been examined for this trait.

02:12
תפריט כתבה
Phys

Having a religious affiliation doesn't prevent betting on sports‎

Having a religious affiliation doesn't stop people from betting on sports in the United States, according to a new study. Results showed that people who infrequently attend religious services are more likely to gamble on sports than people who attend services at least weekly or who never worship publicly. The work appears in the Sociology of Sport Journal.

01:48
תפריט כתבה
Phys

Flipping the K⁺ switch: First potassium-gated ion channel discovered in animal‎

Researchers from the National Institute for Physiological Sciences, Nagoya City University, and Tokyo Metropolitan Institute of Medical Science in Japan have identified the first animal ion channel molecules that open and close in response to extracellular potassium ions (K⁺). The paper is published in the journal Nature Communications.

01:48
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור