Many are convinced that ice baths or cold showers are an effective way to speed recovery after exercise, but a study finds that cold therapy may actually have the opposite effect
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Spinal cord injury can reshape gut microbes that influence whole-body health
Scientists exploring the links between a spinal cord injury, inflammation and immune function have turned their attention to a genome-level analysis of the gut microbial community, with early study results offering hints at potential new approaches to aid healing.
In mice, refeeding a strain of bacteria that was depleted after spinal cord injury (SCI) lowered inflammation and stabilized weight loss. A second study identified 19 microbial species in the mouse gut with the strongest links to the body’s loss of nitrogen after SCI, which is associated with muscle wasting in humans.
Beyond these preliminary findings, the extensive genome-based mapping of microbial communities positions the research team from The Ohio State University to broaden understanding of the gut’s role in injury complications—as well as possible protective activities—when the central nervous system is disrupted.
Introducing Claude Fable 5.2 and Claude Mythos 5.2
The consensus in physical robotics just took a massive shift—but the real story is far more nuanced than the hype suggests. ⚙️💡
Six months ago, the prevailing orthodoxy was clear: text/code LLMs lacked spatial grounding, and end-to-end Vision-Language-Action (VLA) or world models were the *only* path to physical control. Then came Claude Fable 5.2, setting new state-of-the-art scores on RoboDojo—a simulated two-arm manipulation benchmark—and demonstrating impressive zero-shot spatial planning on un-trained tasks.
Naturally, many rushed to claim LLMs had solved physical manipulation. But if you look closer at real-world physical tests—beyond clean simulation environments—the picture changes fast.
In a recent informal physical tabletop test, an LLM-guided robotic arm was set up to play checkers. The result? 64 misses and multiple dropped tokens.
Why the stark disconnect between benchmark performance and physical reality? It comes down to the fundamental divide between high-level spatial reasoning and real-world motor execution:
🧠 What LLMs Get Right (The High-Level Brain)
* Strategic Spatial Logic: Fable 5.2 excels at abstract spatial priors (gravity, leverage, multi-step ordering) and long-horizon in-context error recovery. It easily decides *what* moves to make.
30 Minutes on a Vibrating Mattress Shifted Alzheimer’s-Linked Proteins in a Small Trial
Put this down as one of the more unusual approaches to Alzheimer’s treatment that we’ve come across to date: having patients lie on a vibrating mattress to clear out waste proteins that could be building up in the brain.
These vibrations are designed to mimic the brain’s natural garbage disposal system, which runs mainly at night.
Blood pressure in the brain drops, and slow pulses then clear out anything that shouldn’t be there, ready for the morning.
He Ordered a Cappuccino… And the Entire Game Went on High Alert | Free Guy
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The Gurzhi Effect Reaches Three Dimensions
Measurements on micrometer-scale cadmium samples provide definitive evidence of an unusual charge-transport regime in a 3D metal.
In an ordinary metal, electrons undergo collisions with impurities, phonons (lattice vibrations), and material boundaries. By removing momentum from the electrons, these collisions determine the metal’s conductivity. One of these types of collisions—between electrons and phonons—becomes more frequent at high temperatures, further impeding the electron flow and decreasing the metal’s conductivity as it warms. But more than 60 years ago, the physicist Radii Gurzhi predicted that, under certain circumstances, some metals might behave more like classical liquids, in which thermal energy reduces the fluid’s internal resistance to flow, or viscosity, causing conductivity to increase with temperature [1]. Despite having been studied theoretically for decades, the so-called Gurzhi effect was only recently confirmed in graphene [2], following tentative observations in potassium [3].
Snapshot: A Dragon Rouses out of the Sea Spray
The violent breaking of waves is both visually spectacular and meteorologically impactful.
The art of good conversation may involve a little pink noise
Most of us like a good old chat with friends, colleagues, neighbors or acquaintances. But what can turn a really good chat into a great one? Sure, conversation topics matter, but scientists have found underlying patterns that may explain our best interactions.
The question has long vexed scientists. Previous studies have mostly focused on how closely people’s words and ideas match, rather than how chats flow and shift from one moment to the next.
But researchers Kathryn O’Nell, Emily Finn and Kiara L. Sanchez at Dartmouth College in the United States took a different approach.
Gatineau Park foliage reveals local Cold War nuclear testing legacy
For more than six decades, local scientists have collected sugar maple leaves from Gatineau Park to measure their radiocarbon levels, creating the longest continuous record of its kind. Now, a study of those leaves led by the André E. Lalonde National Facility for Accelerator Mass Spectrometry (AEL-AMS) located at the University of Ottawa shows that the effects of Cold War–era nuclear weapons testing have only recently disappeared from the local biosphere. The study, titled “Stored carbohydrates buffer Bomb and Suess radiocarbon effects in maple leaves across a 65-year Ottawa region record,” was published in Scientific Reports.
The Geological Survey of Canada began collecting maple leaves in Gatineau Park in 1961, taking samples once a month during each growing season. Its scientists analyzed the leaves until the agency’s radiocarbon laboratory closed in 2004. The AEL-AMS later took over the analyses and extended the record through 2025, adding 59 annual and seasonal measurements. The collection is ongoing, though leaves gathered in September 2026 are not included in the current study.
“These leaves are a 65-year diary of the atmosphere,” explains Dr. Leonard Wassenaar, executive director of the André E. Lalonde National Facility for Accelerator Mass Spectrometry (AMS) at the University of Ottawa. “It took more than 65 years for the extra radiocarbon from weapons testing to disappear from the Ottawa-area biosphere. The effects were still with us decades after the last test.”
New perovskite system extends room-temperature spin polarization via successive quantum wells
A research team led by Lu Haipeng, a professor in the Department of Chemistry at The Hong Kong University of Science and Technology (HKUST), has achieved a breakthrough in preserving spin information for optoelectronic technologies. The team has developed a perovskite chiral multiple quantum-well system that maintains spin polarization approximately 300 times longer at room temperature. The study opens new possibilities for future quantum technologies and next-generation spin-based applications. The study was published in the journal Nature Photonics.
Semiconductors underpin modern optoelectronic devices, yet the industry continues to face challenges in improving processing speed while reducing energy consumption. To overcome these limitations, researchers are exploring new approaches, particularly spin-based technologies. However, manipulating spin states at room temperature remains extremely difficult due to the rapid spin decoherence process.
To address these challenges, the HKUST research team developed a novel perovskite chiral multiple quantum-well system that enables an efficient “spin cascade” process. Using a two-step seed-assisted crystallization approach, the team constructed well-oriented quantum wells with varying widths and continuous intrinsic chirality across two-dimensional (n = 1), quasi-two-dimensional (n = 2, 3, 4, …) and three-dimensional (n = ∞) perovskite phases.