Washington Post columnist Dana Milbank calls himself "a highly creative hypochondriac" — who just paid for an expensive MRI scan to locate abnormal spots as tiny as 2 millimeters.

He discusses the pros and cons of its "diffusion-weighted imaging" technology combined with the pattern recognition of AI, which theoretically "has the potential to save our lives by revealing budding cancers, silent aneurysms and other hidden would-be killers before they become deadly. " But the scans cost $2,500 a pop and insurance won't pay. Worse, for every cancer these MRIs find, they produce a slightly greater number of false positives that require a biopsy, with the potential for infection and bleeding and emotional distress. Even when the scans don't produce a false positive, they almost always come up with some vague and disconcerting abnormality.... Will we feel better after viewing our insides? Or will we become anxious about things we hadn't even thought to worry about?

Part of living has always been in the mystery, in not knowing what tomorrow will bring. Now, because of sophisticated imaging, genome sequencing and other revolutionary screening tools, we can have predictability, or at least the illusion of it. But do we want that? The American College of Radiology says we do not. Its still-current 2023 statement says there is not "sufficient evidence" to recommend full-body screening, cautioning that the scan could lead to needless testing and expense. But David Larson, chair of ACR's Commission on Quality and Safety, told me that could change as more data comes in. "When people ask me, 'Would you recommend it?' I would say it depends on your tolerance for ambiguity," he said, giving the example of somebody found to have a borderline aortic aneurysm who is advised to wait and monitor it. If "that won't keep you up at night, then I wouldn't necessarily recommend against it...."

About 1 in 20 gets that dreaded call. A study Prenuvo presented earlier this year of 1,011 participants found that 4.9 percent of scans required a follow-up biopsy. Of those, 2.2 percent were actually cancer, and the other 2.7 percent were false positives. Of the 22 cancers the scans caught, 86 percent of patients had no specific symptoms. But if finding something truly awful is rare, finding something abnormal is almost guaranteed. [Vikash Modi, Prenuvo's senior medical director of preventative medicine] said only 1 in 20 scans come back completely clean. The vast majority of patients wind up in the ambiguous realm where something may look suspicious but doesn't require urgent follow-up.
He opted for the cheaper $1,000 torso scan, which the senior medical director calls "our bread-and-butter area," since 17 of the 22 cancers detected in one Prenuvo study were in that area and is where they often find cancers that wouldn't be discovered until they were incurable like "that scary pancreatic stuff...."

Milbank's scan found 12 "abnormalities" included "a 2.5 mm pulmonary nodule in the right lower lobe" and "a 4.6 mm intraductal papillary mucinous neoplasm in the pancreatic tail" — but with 10 abnormalities labeled "minor" (and six being musculoskeletal wear-and-tear problems "I already knew about from the usual aches and pains".) Even the two "moderate" findings didn't sound that grim when I read on. The "indeterminant lesion" in my lung requires no follow-up, while the thing in my pancreas is "low-risk."... The "most interesting" finding was the pancreatic cyst, because, at this size and location, there's a 3 percent chance it will become cancerous in the next five years. But if annual follow-up scans of my pancreas (covered by insurance) show it's getting bigger, the cyst can be removed before it becomes cancer. For me, this made the MRI worthwhile. Sure, there was a 97 percent likelihood the cyst never would develop into a problem even if I hadn't learned about it. But now, with minimal inconvenience, I can eliminate that 3 percent risk of getting pancreatic cancer, the most lethal of major malignancies.

alternative_right shares a report from ScienceAlert: Engineers at Cornell University have created the blackest fabric on record, finding it absorbs 99.87 percent of all light that dares to illuminate its surface. [...] In this case, the Cornell researchers dyed a white merino wool knit fabric with a synthetic melanin polymer called polydopamine. Then, they placed the material in a plasma chamber, and etched structures called nanofibrils -- essentially, tiny fibers that trap light. "The light basically bounces back and forth between the fibrils, instead of reflecting back out -- that's what creates the ultrablack effect," says Hansadi Jayamaha, fiber scientist and designer at Cornell.

The structure was inspired by the magnificent riflebird (Ptiloris magnificus). Hailing from New Guinea and northern Australia, male riflebirds are known for their iridescent blue-green chests contrasted with ultrablack feathers elsewhere on their bodies. The Cornell material actually outperforms the bird's natural ultrablackness in some ways. The bird is blackest when viewed straight on, but becomes reflective from an angle. The material, on the other hand, retains its light absorption powers when viewed from up to 60 degrees either side. The findings have been published in the journal Nature Communications.

Despite predictions that AI would replace radiologists, healthcare systems worldwide are hiring more of them because AI tools enhance their work, create new oversight tasks, and increase imaging volumes rather than reducing workloads. "Put all that together with the context of an aging population and growing demand for imaging of all kinds, and you can see why Offiah and the Royal College of Radiologists are concerned about a shortage of radiologists, not their displacement," writes Financial Times authors John Burn-Murdoch and Sarah O'Connor. Amaka Offiah, who is a consultant pediatric radiologist and a professor in pediatric musculoskeletal imaging at the University of Sheffield in the UK, makes a prediction of her own: "AI will assist radiologists, but will not replace them. I could even dare to say: will never replace them." From the report: [A]lmost all of the AI tools in use by healthcare providers today are being used by radiologists, not instead of them. The tools keep getting better, and now match or outperform experienced radiologists even after factoring in false positives or negatives, but the fact that both human and AI remain fallible means it makes far more sense to pair them up than for one to replace the other. Two pairs of eyes can come to a quicker and more accurate judgment, one spotting or correcting something the other missed. And in high-stakes settings where the costs of a mistake can be astronomical, the downside risk from an error by a fully autonomous AI radiologist is huge. "I find this a fascinating demonstration of why even if AI really can do some of the most high-value parts of someone's job, it doesn't mean displacement (even of those few tasks let alone the job as a whole) is inevitable," concludes John. "Though I also can't help noticing a parallel to driverless cars, which were simply too risky to ever go fully autonomous until they weren't."

Sarah added: "I think the story of radiologists should be a reminder to technologists not to make sweeping assertions about the future of professions they don't intimately understand. If we had indeed stopped training radiologists in 2016, we'd be in a real mess today."

NASA's OSIRIS-REx samples from asteroid Bennu have revealed bio-essential sugars, a never-before-seen "space gum" polymer, and unusually high levels of supernova-origin dust. The findings bolster the RNA-world hypothesis, suggest complex organics formed early on Bennu's parent body, and show preserved presolar grains that escaped alteration for billions of years.

"All five nucleobases used to construct both DNA and RNA, along with phosphates, have already been found in the Bennu samples brought to Earth by OSIRIS-REx," said lead scientist Yoshihiro Furukawa of Tohoku University. "The new discovery of ribose means that all of the components to form the molecule RNA are present in Bennu."

The findings have been published in three new papers by the journals Nature Geosciences and Nature Astronomy. NASA also published a video on YouTube detailing the discovery.

An anonymous reader quotes a report from the Guardian: Almost three in 10 GPs in the UK are using AI tools such as ChatGPT in consultations with patients, even though it could lead to them making mistakes and being sued, a study reveals. The rapid adoption of AI to ease workloads is happening alongside a "wild west" lack of regulation of the technology, which is leaving GPs unaware which tools are safe to use. That is the conclusion of research by the Nuffield Trust thinktank, based on a survey of 2,108 family doctors by the Royal College of GPs about AI and on focus groups of GPs.

Ministers hope that AI can help reduce the delays patients face in seeing a GP. The study found that more and more GPs were using AI to produce summaries of appointments with patients, assisting their diagnosis of the patient's condition and routine administrative tasks. In all, 598 (28%) of the 2,108 survey respondents said they were already using AI. More male (33%) than female (25%) GPs have used it and far more use it in well-off than in poorer areas.

It is moving quickly into more widespread use. However, large majorities of GPs, whether they use it or not, worry that practices that adopt it could face "professional liability and medico-legal issues," and "risks of clinical errors" and problems of "patient privacy and data security" as a result, the Nuffield Trust's report says. [...] In a blow to ministerial hopes, the survey also found that GPs use the time it saves them to recover from the stresses of their busy days rather than to see more patients. "While policymakers hope that this saved time will be used to offer more appointments, GPs reported using it primarily for self-care and rest, including reducing overtime working hours to prevent burnout," the report adds.

Nature has retracted a headline-grabbing climate-economics study after critics found flawed data that massively inflated its predicted global economic collapse. The New York Times reports: The decision came after a team of economists noticed problems with the data for one country, Uzbekistan, that significantly skewed the results. If Uzbekistan were excluded, they found, the damages would look similar to earlier research (PDF). Instead of a 62 percent decline in economic output by 2100 in a world where carbon emissions continue unabated, global output would be reduced by 23 percent.

Of course, erasing more than 20 percent of the world's economic activity would still be a devastating blow to human welfare. The paper's detractors emphasize that climate change is a major threat, as recent meta analyses have found, and that more should be done to address it -- but, they say, unusual results should be treated skeptically. "Most people for the last decade have thought that a 20 percent reduction in 2100 was an insanely large number," said Solomon Hsiang, a professor of global environmental policy at Stanford University who co-wrote the critique published in August. "So the fact that this paper is coming out saying 60 percent is off the chart."

schwit1 shares a report from CNN: A private Chinese space firm successfully sent its Zhuque-3 rocket to orbit but failed in its historic attempt to re-land the rocket booster Wednesday -- the first such trial by a Chinese firm as the country's growing commercial space sector races to catch up with American rivals like SpaceX. The rocket entered orbit as planned, but its first stage did not successfully return to a landing site, instead crashing down, the company said in a statement.

"An anomaly occurred after the first-stage engine ignited during the landing phase, preventing a soft landing on the designated recovery pad," the statement said. "The debris landed at the edge of the recovery area, resulting in a failed recovery test." The team would "conduct a comprehensive review" and continue to "advance the verification and application of reusable rocket technology in future missions," the statement added. You can watch a video of the launch and subsequent crash here.

China's private launch firm LandSpace is preparing the debut flight of its Zhuque-3 rocket, aiming to become the country's first to land a reusable orbital-class booster using a Falcon-9-style return profile. Ars Technica reports: Liftoff could happen around 11 pm EST tonight (04:00 UTC Wednesday), or noon local time at the Jiuquan Satellite Launch Center in northwestern China. Airspace warning notices advising pilots to steer clear of the rocket's flight path suggest LandSpace has a launch window of about two hours. When it lifts off, the Zhuque-3 (Vermillion Bird-3) rocket will become the largest commercial launch vehicle ever flown in China. What's more, LandSpace will become the first Chinese launch provider to attempt a landing of its first stage booster, using the same tried-and-true return method pioneered by SpaceX and, more recently, Blue Origin in the United States.

Construction crews recently finished a landing pad in the remote Gobi Desert, some 240 miles (390 kilometers) southeast of the launch site at Jiuquan. Unlike US spaceports, the Jiuquan launch base is located in China's interior, with rockets flying over land as they climb into space. When the Zhuque-3 booster finishes its job of sending the rocket toward orbit, it will follow an arcing trajectory toward the recovery zone, firing its engines to slow for landing about eight-and-a-half minutes after liftoff. At least, that's what is supposed to happen. LandSpace officials have not made any public statements about the odds of a successful landing -- or, for that matter, a successful launch... UPDATE: Chinese Reusable Booster Explodes During First Orbital Test

Bruce66423 shares a report from the Los Angeles Times: Tattoo ink doesn't just sit inertly in the skin. New research shows it moves rapidly into the lymphatic system, where it can persist for months, kill immune cells, and even disrupt how the body responds to vaccines. Scientists in Switzerland used a mouse model to trace what happens after tattooing. Pigments drained into nearby lymph nodes within minutes and continued to accumulate for two months, triggering immune-cell death and sustained inflammation. The ink also weakened the antibody response to Pfizer Inc. and BioNTech SE's COVID vaccine when the shot was administered in tattooed skin. In contrast, the same inflammation appeared to boost responses to an inactivated flu vaccine. "This work represents the most extensive study to date regarding the effect of tattoo ink on the immune response and raises serious health concerns associated with the tattooing practice," the researchers said. "Our work underscores the need for further research to inform public health policies and regulatory frameworks regarding the safety of tattoo inks."

The findings have been published in the journal Proceedings of the National Academy of Sciences.

An anonymous reader quotes a report from the New York Times: The San Francisco city attorney filed on Tuesday the nation's first government lawsuit against food manufacturers over ultraprocessed fare (source may be paywalled; alternative source), arguing that cities and counties have been burdened with the costs of treating diseases that stem from the companies' products. David Chiu, the city attorney, sued 10 corporations that make some of the country's most popular food and drinks. Ultraprocessed products now comprise 70 percent of the American food supply and fill grocery store shelves with a kaleidoscope of colorful packages. Think Slim Jim meat sticks and Cool Ranch Doritos. But also aisles of breads, sauces and granola bars marketed as natural or healthy.

It is a rare issue on which the liberal leaders in San Francisco City Hall are fully aligned with the Trump administration, which has targeted ultraprocessed foods as part of its Make America Healthy Again mantra. Mr. Chiu's lawsuit, which was filed in San Francisco Superior Court on behalf of the State of California, seeks unspecified damages for the costs that local governments bear for treating residents whose health has been harmed by ultraprocessed food. The city accuses the companies of "unfair and deceptive acts" in how they market and sell their foods, arguing that such practices violate the state's Unfair Competition Law and public nuisance statute. The city also argues the companies knew that their food made people sick but sold it anyway.

schwit1 shares a report from Behind The Black: In its war with the Ukraine, it appears Russia is still managing to obtain black market Starlink mini-terminals for use on its drones, despite an effort since 2024 to block access. [Imagery from eastern Ukraine shows a Russian Molniya-type drone outfitted with a mini-Starlink terminal, reinforcing reports that Russia is improvising satellite-linked UAVs to extend their communication and operational range.] SpaceX has made no comment on this issue.

According to the article, Ukraine is "exploring alternative European satellite providers in response, seeking more secure and controllable communications infrastructure for military operations." While switching to another satellite provider might allow Ukraine to shut Starlink down and prevent the Russians from using it within its territory, doing so would likely do more harm to Ukraine's military effort than Russia's. There isn't really any other service comparable at this time. And when Amazon's Leo system comes on line it will face the same black market issues. I doubt it will have any more success than SpaceX in preventing Russia from obtaining its terminals.

Overall this issue is probably not a serious one militarily, however. Russia is not likely capable of obtaining enough black market terminals to make any significant difference on the battlefield. This story however highlights a positive aspect of these new constellations. Just as Russia can't be prevented from obtaining black market terminals, neither can the oppressed citizens in totalitarian nations like Russia and China be blocked as well. These constellations as designed act to defeat the censorship and information control of such nations, a very good thing.

A Soyuz launch at Baikonur damaged Russia's only launchpad capable of sending astronauts and crucial propellant to the ISS. "The rocket itself headed to space without incident, taking three astronauts -- Sergey Kud-Sverchkov and Sergei Mikaev of Russia and Chris Williams of NASA -- to the space station," reports the New York Times. "But the force of the rocket's exhaust shoved a service platform used for prelaunch preparations out of its protective shelter. The platform fell into the flame trench below." From the report: Photos and videos of the launch site the next day showed the platform out of place and mangled. "It's heavily damaged," said Anatoly Zak, who publishes RussianSpaceWeb.com, a close tracker of Russia's space activities, "and so probably it will have to be rebuilt. Maybe some of the hardware can be reused. But it fell down, and it's destroyed."

This is the latest embarrassment for the once-proud Russian space program, which the United States relied on from 2011 to 2020 to get NASA astronauts to orbit. The incident also raises questions about the future of the International Space Station if the launchpad cannot be quickly repaired. In a statement issued on Friday, Roscosmos, the state corporation in charge of the Russian space program, confirmed unspecified "damage" at the launchpad. "All necessary parts needed for repairs are at our disposal, and the damage will be dealt with in the near future," it said.

After a successful November 27th launch to the International Space Station, Russia discovered an accident had occurred on their launch site's mobile maintenance cabin — when a drone spotted it lying upside down in a flame trench. "The main issue with the structure collapse is that it puts Site 31/6 — the only Russian launch site capable of launching crew and cargo to the International Space Station (ISS) — out of service until the structure is fixed," reports the space-news site NASA Spaceflight There are other Soyuz 2 rocket launch pads, but they are either located at an unsuitable latitude, like Plesetsk, or not certified for crewed flights, like Vostochny, or decommissioned and transferred to a museum, like Gagarin's Start at Baikonur. As a result, Russia is temporarily unable to launch Soyuz crewed spacecraft and Progress cargo ships to the ISS, whose nearest launch (Progress MS-33) was scheduled for December 21....

When the rocket launched, a pressure difference was created between the space under the rocket, where gases from running engines are discharged, and the nook where the [144-ton] maintenance cabin was located. The resulting pressure difference pulled the service cabin out of the nook and threw it into the flame trench, where it fell upside down from a height of 20 m. Photos of the accident showed significant damage to the maintenance cabin, which, according to experts, is too extensive to allow for repairs. The only way to resume launches from Site 31/6 is to install a spare maintenance cabin or construct a new one.

Despite the fact that the fallen structure was manufactured in the 1960s, two similar service cabins were manufactured recently at the Tyazhmash heavy-engineering plant in Syzran for other Soyuz launch complexes at the Guiana Space Center and Vostochny Cosmodrome. The production of each cabin took around two years to complete, however, it was not for an emergency situation.
"Various experts gave different possible estimates of the recovery time of the Site 31 launch complex: from several months to three years."

An anonymous reader shared this report from The Conversation: To make interplanetary travel faster, safer, and more efficient, scientists need breakthroughs in propulsion technology. Artificial intelligence is one type of technology that has begun to provide some of these necessary breakthroughs. We're a team of engineers and graduate students who are studying how AI in general, and a subset of AI called machine learning in particular, can transform spacecraft propulsion. From optimizing nuclear thermal engines to managing complex plasma confinement in fusion systems, AI is reshaping propulsion design and operations. It is quickly becoming an indispensable partner in humankind's journey to the stars...

Early nuclear thermal propulsion designs from the 1960s, such as those in NASA's NERVA program, used solid uranium fuel molded into prism-shaped blocks. Since then, engineers have explored alternative configurations — from beds of ceramic pebbles to grooved rings with intricate channels... [T]he more efficiently a reactor can transfer heat from the fuel to the hydrogen, the more thrust it generates. This area is where reinforcement learning has proved to be essential. Optimizing the geometry and heat flow between fuel and propellant is a complex problem, involving countless variables — from the material properties to the amount of hydrogen that flows across the reactor at any given moment. Reinforcement learning can analyze these design variations and identify configurations that maximize heat transfer.

Psychology Today reports: In a study conducted in Milan, Italy, and published in November 2025, the sight of a person dressed as Batman led to a nearly doubled rate of people giving up their seat to a pregnant woman. Over the course of 138 subway rides, researchers found that people who saw "Batman" standing near the pregnant woman were far more altruistic than those who did not.

Researchers are calling this the "Batman effect," suggesting a form of "involuntary" mindfulness may be at play. Noticing these subtle social cues appears to shift people's typical, automatic reactions. Most interestingly, 44 percent of the people questioned reported they did not even consciously register Batman's presence... The superhero costume serves as a visual nudge, pulling us out of our default, self-focused mode and into a more generous, attentive state.
More from Futurism: Batman showing up is just one — albeit striking — way of promoting what's called "prosocial behavior," or the act of helping others around you, via introducing an unexpected event, the researchers write. "Our findings are similar to those of previous research linking present-moment awareness (mindfulness) to greater prosociality," said study lead author Francesco Pagnini, a professor of clinical psychology at the Università Cattolica in Milan, in a statement about the work. "This may create a context in which individuals become more attuned to social cues."
Thanks to Black Parrot (Slashdot reader #19,622) for sharing the article.