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Gut-to-brain signaling restricts post-illness protein appetite, researchers discover

When we get sick, with the flu, say, or pneumonia, there can be a period where the major symptoms of our illness have resolved but we still just don’t feel great.

“While this is common, there’s no real way to quantify what’s going on,” says Nikolai Jaschke, MD, Ph.D., who recently completed a postdoctoral fellowship at Yale School of Medicine (YSM) in the lab of Andrew Wang, MD, Ph.D., associate professor of internal medicine (rheumatology). “And unfortunately, we lack therapeutic tools to support people in this state.”

Jaschke noticed this while taking care of patients recovering from acute illnesses and, when he joined Wang’s lab, he began studying what was happening in the body during recovery. Through this work, Jaschke, Wang, and their colleagues uncovered a gut-to-brain signaling pathway in that restricts appetite—specifically for protein—during recovery. They published their findings on Nov. 4 in Cell.

Table salt enables new metallic nanotubes with potential for faster electronics

For the first time, researchers have made niobium sulfide metallic nanotubes with stable, predictable properties, a long-sought goal in advanced materials science. According to the international team, including a researcher at Penn State, that made the accomplishment, the new nanomaterial that could open the door to faster electronics, efficient electricity transport via superconductor wires and even future quantum computers was made possible with a surprising ingredient: table salt.

They published their research in ACS Nano.

Nanotubes are structures so small that thousands of them could fit across the width of a human hair. The tiny hollow cylinders are made by rolling up sheets of atoms; nanotubes have an unusual size and shape that can cause them to behave very differently from 3D, or bulk, materials.

Open-source ‘macroscope’ offers dynamic luminescence imaging

A team of European researchers has developed a versatile, open-source luminescence imaging instrument designed to democratize access to advanced fluorescence and electroluminescence techniques across disciplines ranging from plant science to materials research.

The new system, detailed in Optics Express, offers an affordable and customizable alternative to bespoke laboratory setups and was developed with support from the DREAM project.

The device—described as a luminescence macroscope with dynamic illumination—combines flexibility, affordability, and precision in a single platform. Unlike conventional imaging instruments, which are often constrained by fixed optical architectures, the macroscope supports complex, time-resolved illumination and detection protocols.

Ultrafast VUV pulses fully characterized for probing valence electron dynamics

A team of researchers at the Max Born Institute have managed to fully characterize few-femtosecond-long light pulses tunable in the vacuum ultraviolet. These results unlock the possibility for studying valence electron dynamics of many materials in the VUV.The research is published in the journal Nature Photonics.

Self-driving system makes key plastic ingredient using in-house generated H₂O₂

An eco-friendly system capable of producing propylene oxide (PO) without external electricity or sunlight has been developed. PO is a vital raw material used in manufacturing household items such as polyurethane for sofas and mattresses, as well as polyester for textiles and water bottles.

A research team led by Professors Ja Hun Kwak and Ji-Wook Jang from the School of Energy and Chemical Engineering at UNIST, in collaboration with Professor Sung June Cho of Chonnam National University, has successfully created a self-driven PO production system utilizing in-situ generated hydrogen peroxide (H₂O₂).

The research is published in Nature Communications.

Single organic molecule triggers Kondo effect in molecular-scale ‘Kondo box’

A research group led by Prof. Li Xiangyang from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, has made a new discovery: a single organic molecule can induce the Kondo effect in a magnetic atom, challenging the long-standing belief that this quantum phenomenon requires a vast sea of metallic electrons.

The research results were published in Physical Review Letters.

The Kondo effect is a quantum many-body phenomenon where conduction electrons in a metal collectively screen the magnetic moment of a localized impurity atom. It has been helping to explain strongly correlated electron behavior and inspiring advances in nanoscience, , and quantum information research.

NASA Finds Hidden Heat on Saturn’s Icy Moon Enceladus, Hinting at Life

Cassini’s new analysis shows Saturn’s moon Enceladus leaking heat from both poles, not just the south. This balanced heat flow suggests its underground ocean could stay liquid for geological ages, supporting conditions for life. Scientists even used temperature data to estimate ice thickness, pre

Samsung Mobile Flaw Exploited as Zero-Day to Deploy LANDFALL Android Spyware

It’s assessed that the attacks involved sending via WhatsApp malicious images in the form of DNG (Digital Negative) files, with evidence of LANDFALL samples going all the way back to July 23, 2024. This is based on DNG artifacts bearing names like “WhatsApp Image 2025/02/10 at 4.54.17 PM.jpeg” and “IMG-20240723-WA0000.jpg.”

Itay Cohen, senior principal researcher at Palo Alto Networks Unit 42, told The Hacker News that they have not observed any significant functional changes between the samples from July 2024 and February 2025, when the most recent LANDFALL artifact was uploaded to VirusTotal.

LANDFALL, once installed and executed, acts as a comprehensive spy tool, capable of harvesting sensitive data, including microphone recording, location, photos, contacts, SMS, files, and call logs.

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