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Phys.org / How the ocean's most abundant bacteria diversify into ecologically distinct groups

A study led by the University of Hawaiʻi at Mānoa's Hawaiʻi Institute of Marine Biology (HIMB) has revealed critical new details about one of the ocean's most abundant life forms—SAR11 marine bacteria. Understanding ...

Dec 17, 2025 in Biology
Phys.org / The hidden physics of knot formation in fluids

Knots are everywhere—from tangled headphones to DNA strands packed inside viruses—but how an isolated filament can knot itself without collisions or external agitation has remained a longstanding puzzle in soft-matter ...

Dec 15, 2025 in Physics
Medical Xpress / New details on role of fat transport molecules in Alzheimer's onset

A new study presents robust evidence on the role of lysophosphatidylcholines (LPCs) in the onset of Alzheimer's disease. Researchers discovered that LPCs—compounds that transport a variety of healthy fatty acids to the ...

Dec 17, 2025 in Genetics
Phys.org / Dazzling cosmic jet reveals time-stamped history of star birth

An international team of astronomers has uncovered the most unmistakable evidence yet that the powerful jets launched by newborn stars reliably record a star's most violent growth episodes, confirming a long-standing model ...

Dec 16, 2025 in Astronomy & Space
Phys.org / People tend to overestimate others' emotions, but this may boost empathy

According to a new study led by Prof. Anat Perry and her Ph.D. student, Shir Genzer, of the Hebrew University of Jerusalem, together with Prof. Noga Cohen from the University of Haifa, chances are you're overestimating just ...

Dec 16, 2025 in Other Sciences
Phys.org / 3D-printed helixes show promise as THz optical materials

Researchers at Lawrence Livermore National Laboratory (LLNL) have optimized and 3D-printed helix structures as optical materials for terahertz (THz) frequencies, a potential way to address a technology gap for next-generation ...

Dec 15, 2025 in Physics
Tech Xplore / Transparency in AI companies falls to new low

A new analysis finds that AI companies now average just 40 out of 100 on transparency, marking a significant decline from last year.

Dec 16, 2025 in Business
Phys.org / Signature of climate change: Nearly half of harmful wildfire smoke exposure linked to human-caused warming

Across the western U.S., wildfires and the dangerous smoke that results have increased in frequency and intensity since the 1990s—that much is clear. Surprisingly less clear are the exact reasons why: While greenhouse gas-related ...

Dec 16, 2025 in Earth
Phys.org / Terra Amata site reveals technological flexibility of first humans in Europe

Archaeologist Paula García Medrano, researcher at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), has just published in Journal of Paleolithic Archaeology a study on the lithic industry from the ...

Dec 15, 2025 in Other Sciences
Phys.org / Tapping into whale talk: Open-source bio-logger captures underwater cetacean conversations

Say you want to listen in on a group of super-intelligent aliens whose language you don't understand, and whose spaceship only flies by Earth once an hour. It's not unlike what Harvard scientists and others are doing, except ...

Dec 15, 2025 in Biology
Medical Xpress / Harmless Klebsiella strain shows powerful protection against gut infections in inflammatory bowel disease model

A team of researchers led by Karina Xavier has uncovered a promising new live biotherapeutic agent that may redefine how the medical field approaches microbiota-based therapies.

Dec 16, 2025 in Inflammatory disorders
Medical Xpress / When neural spikes break time's symmetry: Linking the information-theoretic cost of brain activity to behavior

What if we could peer into the brain and watch how it organizes information as we act, perceive, or make decisions? A new study has introduced a method that does exactly this—not just by looking at fine-grained neuronal ...

Dec 15, 2025 in Neuroscience