"One of the biggest mysteries in astrophysics today is that the forces in galaxies do not seem to add up," write two U.K. researchers in the Conversation: Galaxies rotate much faster than predicted by applying Newton's law of gravity to their visible matter, despite those laws working well everywhere in the Solar System. To prevent galaxies from flying apart, some additional gravity is needed. This is why the idea of an invisible substance called dark matter was first proposed. But nobody has ever seen the stuff. And there are no particles in the hugely successful Standard Model of particle physics that could be the dark matter — it must be something quite exotic.

This has led to the rival idea that the galactic discrepancies are caused instead by a breakdown of Newton's laws. The most successful such idea is known as Milgromian dynamics or Mond [also known as modified Newtonian dynamics], proposed by Israeli physicist Mordehai Milgrom in 1982. But our recent research shows this theory is in trouble...

Due to a quirk of Mond, the gravity from the rest of our galaxy should cause Saturn's orbit to deviate from the Newtonian expectation in a subtle way. This can be tested by timing radio pulses between Earth and Cassini. Since Cassini was orbiting Saturn, this helped to measure the Earth-Saturn distance and allowed us to precisely track Saturn's orbit. But Cassini did not find any anomaly of the kind expected in Mond. Newton still works well for Saturn... Another test is provided by wide binary stars — two stars that orbit a shared centre several thousand AU apart. Mond predicted that such stars should orbit around each other 20% faster than expected with Newton's laws. But one of us, Indranil Banik, recently led a very detailed study that rules out this prediction. The chance of Mond being right given these results is the same as a fair coin landing heads up 190 times in a row. Results from yet another team show that Mond also fails to explain small bodies in the distant outer Solar System...

The standard dark matter model of cosmology isn't perfect, however. There are things it struggles to explain, from the universe's expansion rate to giant cosmic structures. So we may not yet have the perfect model. It seems dark matter is here to stay, but its nature may be different to what the Standard Model suggests. Or gravity may indeed be stronger than we think — but on very large scales only.
"Ultimately though, Mond, as presently formulated, cannot be considered a viable alternative to dark matter any more," the researchers conclude. "We may not like it, but the dark side still holds sway."

An anonymous reader shared this report from the Register: The co-author of SQL, the standardized query language for relational databases, has come out in support of the NoSQL database movement that seeks to escape the tabular confines of the RDBMS. Speaking to The Register as SQL marks its 50th birthday, Donald Chamberlin, who first proposed the language with IBM colleague Raymond Boyce in a 1974 paper [PDF], explains that NoSQL databases and their query languages could help perform the tasks relational systems were never designed for. "The world doesn't stay the same thing, especially in computer science," he says. "It's a very fast, evolving, industry. New requirements are coming along and technology has to change to meet them, I think that's what's happening. The NoSQL movement is motivated by new kinds of applications, particularly web applications, that need massive scalability and high performance. Relational databases were developed in an earlier generation when scalability and performance weren't quite as important. To get the scalability and performance that you need for modern apps, many systems are relaxing some of the constraints of the relational data model."

[...] A long-time IBMer, Chamberlin is now semi-retired, but finds time to fulfill a role as a technical advisor for NoSQL company Couchbase. In the role, he has become an advocate for a new query language designed to overcome the "impedance mismatch" between data structures in the application language and a database, he says. UC San Diego professor Yannis Papakonstantinou has proposed SQL++ to solve this problem, with a view to addressing impedance mismatch between heavily object-based JavaScript, the core language for web development and the assumed relational approach embedded in SQL. Like C++, SQL++ is designed as a compatible extension of an earlier language, SQL, but is touted as better able to handle the JSON file format inherent in JavaScript. Couchbase and AWS have adopted the language, although the cloud giant calls it PartiQL.
At the end of the interview, Chamblin adds that "I don't think SQL is going to go away. A large part of the world's business data is encoded in SQL, and data is very sticky. Once you've got your database, you're going to leave it there. Also, relational systems do a very good job of what they were designed to do...

"[I]f you're a startup company that wants to sell shoes on the web or something, you're going to need a database, and one of those SQL implementations will do the job for free. I think relational databases and the SQL language will be with us for a long time."

An anonymous reader shared this report from Phoronix: For the past several months AMD Linux engineers have been working on AMD Core Performance Boost support for their P-State CPU frequency scaling driver. The ninth iteration of these patches were posted on Monday and besides the global enabling/disabling support for Core Performance Boost, it's now possible to selectively toggle the feature on a per-CPU core basis...

The new interface is under /sys/devices/system/cpu/cpuX/cpufreq/amd_pstate_boost_cpb for each CPU core. Thus users can tune whether particular CPU cores are boosted above the base frequency.

The Royal Institution of Australia is a national non-profit hub for science communication, publishing the science magazine Cosmos four times a year.

This month they argued that small modular nuclear reactors "don't add up as a viable energy source." Proponents assert that SMRs would cost less to build and thus be more affordable. However, when evaluated on the basis of cost per unit of power capacity, SMRs will actually be more expensive than large reactors. This 'diseconomy of scale' was demonstrated by the now-terminated proposal to build six NuScale Power SMRs (77 megawatts each) in Idaho in the United States. The final cost estimate of the project per megawatt was around 250 percent more than the initial per megawatt cost for the 2,200 megawatts Vogtle nuclear power plant being built in Georgia, US. Previous small reactors built in various parts of America also shut down because they were uneconomical.
The cost was four to six times the cost of the same electricity from wind and solar photovoltaic plants, according to estimates from the Australian Commonwealth Scientific and Industrial Research Organisation and the Australian Energy Market Operator. "The money invested in nuclear energy would save far more carbon dioxide if it were instead invested in renewables," the article agues: Small reactors also raise all of the usual concerns associated with nuclear power, including the risk of severe accidents, the linkage to nuclear weapons proliferation, and the production of radioactive waste that has no demonstrated solution because of technical and social challenges. One 2022 study calculated that various radioactive waste streams from SMRs would be larger than the corresponding waste streams from existing light water reactors...

Nuclear energy itself has been declining in importance as a source of power: the fraction of the world's electricity supplied by nuclear reactors has declined from a maximum of 17.5 percent in 1996 down to 9.2 percent in 2022. All indications suggest that the trend will continue if not accelerate. The decline in the global share of nuclear power is driven by poor economics: generating power with nuclear reactors is costly compared to other low-carbon, renewable sources of energy and the difference between these costs is widening.
Thanks to Slashdot reader ZipNada for sharing the article.

Thursday the BBC reported: Plane bodies made by Boeing's largest supplier regularly left the factory with serious defects, according to a former quality inspector at the firm. Santiago Paredes who worked for Spirit AeroSystems in Kansas, told the BBC he often found up to 200 defects on parts being readied for shipping to Boeing. He was nicknamed "showstopper" for slowing down production when he tried to tackle his concerns, he claimed.

Spirit said it "strongly disagree[d]" with the allegations. "We are vigorously defending against his claims," said a spokesperson for Spirit, which remains Boeing's largest supplier.

Mr Paredes made the allegations against Spirit in an exclusive interview with the BBC and the American network CBS, in which he described what he said he experienced while working at the firm between 2010 and 2022... "I was finding a lot of missing fasteners, a lot of bent parts, sometimes even missing parts...." Mr Paredes told the BBC that some of the defects he identified while at Spirit were minor — but others were more serious. He also claimed he was put under pressure to be less rigorous...

He now maintains he would be reluctant to fly on a 737 Max, in case it still carried flaws that originated in the Wichita factory. "I'd never met a lot of people who were scared of flying until I worked at Spirit," he said. "And then, being at Spirit, I met a lot of people who were afraid of flying — because they saw how they were building the fuselages."
"If quality mattered, I would still be at Spirit," Paredes told CBS News, speaking publicly for the first time. CBS News spoke with several current and former Spirit AeroSystems employees and reviewed photos of dented fuselages, missing fasteners and even a wrench they say was left behind in a supposedly ready-to-deliver component. Paredes said Boeing knew for years Spirit was delivering defective fuselages.
It could be just a coincidence, but the same day, the Associated Press ran story with this headline.

"Boeing plane carrying 85 people catches fire and skids off the runway in Senegal, injuring 10." It was the third incident involving a Boeing airplane this week. Also on Thursday, 190 people were safely evacuated from a plane in Turkey after one of its tires burst during landing at a southern airport, Turkey's transportation ministry said.

An anonymous reader shared this report from CNN: The "world's largest" plant designed to suck planet-heating pollution out of the atmosphere like a giant vacuum began operating in Iceland on Wednesday. "Mammoth" is the second commercial direct air capture plant opened by Swiss company Climeworks in the country, and is 10 times bigger than its predecessor, Orca, which started running in 2021... Climeworks plans to transport the carbon underground where it will be naturally transformed into stone, locking up the carbon permanently... The whole operation will be powered by Iceland's abundant, clean geothermal energy....

Climeworks started building Mammoth in June 2022, and the company says it is the world's largest such plant. It has a modular design with space for 72 "collector containers" — the vacuum parts of the machine that capture carbon from the air — which can be stacked on top of each other and moved around easily. There are currently 12 of these in place with more due to be added over the next few months. Mammoth will be able to pull 36,000 tons of carbon from the atmosphere a year at full capacity, according to Climeworks. That's equivalent to taking around 7,800 gas-powered cars off the road for a year...

All the carbon removal equipment in the world is only capable of removing around 0.01 million metric tons of carbon a year, a far cry from the 70 million tons a year needed by 2030 to meet global climate goals, according to the International Energy Agency [7,000x more]... Jan Wurzbacher, the company's co-founder and co-CEO, said Mammoth is just the latest stage in Climeworks' plan to scale up to 1 million tons of carbon removal a year by 2030 and 1 billion tons by 2050. Plans include potential DAC plants in Kenya and the United States.

"Google's business is growing at its fastest rate in two years," reports CNBC, "and a blowout earnings report in April sparked the biggest rally in Alphabet shares since 2015, pushing the company's market cap past $2 trillion.

"But at an all-hands meeting last week with CEO Sundar Pichai and CFO Ruth Porat, employees were more focused on why that performance isn't translating into higher pay, and how long the company's cost-cutting measures are going to be in place." "We've noticed a significant decline in morale, increased distrust and a disconnect between leadership and the workforce," a comment posted on an internal forum ahead of the meeting read. "How does leadership plan to address these concerns and regain the trust, morale and cohesion that have been foundational to our company's success?"

Google is using artificial intelligence to summarize employee comments and questions for the forum.

Alphabet's top leadership has been on the defensive for the past few years, as vocal staffers have railed about post-pandemic return-to-office mandates, the company's cloud contracts with the military, fewer perks and an extended stretch of layoffs — totaling more than 12,000 last year — along with other cost cuts that began when the economy turned in 2022. Employees have also complained about a lack of trust and demands that they work on tighter deadlines with fewer resources and diminished opportunities for internal advancement.

The internal strife continues despite Alphabet's better-than-expected first-quarter earnings report, in which the company also announced its first dividend as well as a $70 billion buyback. "Despite the company's stellar performance and record earnings, many Googlers have not received meaningful compensation increases" a top-rated employee question read. "When will employee compensation fairly reflect the company's success and is there a conscious decision to keep wages lower due to a cooling employment market?"

Red Hat Enterprise Linux 9.4 has been released. But also released is Rocky Linux 9.4, reports 9to5Linux: Rocky Linux 9.4 also adds openSUSE's KIWI next-generation appliance builder as a new image build workflow and process for building images that are feature complete with the old images... Under the hood, Rocky Linux 9.4 includes the same updated components from the upstream Red Hat Enterprise Linux 9.4
This week also saw the release of Alma Linux 9.4 stable (the "forever-free enterprise Linux distribution... binary compatible with RHEL.") The Register points out that while Alma Linux is "still supporting some aging hardware that the official RHEL 9.4 drops, what's new is largely the same in them both."

And last week also saw the launch of the AlmaLinux High-Performance Computing and AI Special Interest Group (SIG). HPCWire reports: "AlmaLinux's status as a community-driven enterprise Linux holds incredible promise for the future of HPC and AI," said Hayden Barnes, SIG leader and Senior Open Source Community Manager for AI Software at HPE. "Its transparency and stability empowers researchers, developers and organizations to collaborate, customize and optimize their computing environments, fostering a culture of innovation and accelerating breakthroughs in scientific research and cutting-edge AI/ML."
And this week, InfoWorld reported: Red Hat has launched Red Hat Enterprise Linux AI (RHEL AI), described as a foundation model platform that allows users to more seamlessly develop and deploy generative AI models. Announced May 7 and available now as a developer preview, RHEL AI includes the Granite family of open-source large language models (LLMs) from IBM, InstructLab model alignment tools based on the LAB (Large-Scale Alignment for Chatbots) methodology, and a community-driven approach to model development through the InstructLab project, Red Hat said.

Slashdot reader quonset writes: The last floppy disk was manufactured in 2011. Despite no new supplies being available for over a decade, there are still people, and organizations, who rely on floppy disks. Each has their own story as to why they rely on what is essentially 1970s technology.
From the BBC: Tom Persky, a US businessman, has been selling "new", as in, unopened, floppy disks for years and still finds the trade lucrative. He runs Floppydisk.com, which offers disks for about US$1 (£0.80) each, though some higher capacity versions cost up to US$10 (£8) per disk, he says. Persky has customers all over the world and you could split them roughly 50-50 into hobbyists and enthusiasts like Espen Kraft on one side, and industrial users on the other. This latter category encompasses people who use computers at work that require floppy disks to function. They are, essentially, locked in to a format that the rest of the world has largely forgotten.

"I sell thousands of floppy disks to the airline industry, still," says Persky. He declines to elaborate. "Companies are not happy about when I talk about them." But it is well-known that some Boeing 747s, for example, use floppy disks to load critical software updates into their navigation and avionics computers. While these older aircraft might not be so common in Europe or the US these days, you might find one in the developing world, for instance, Persky hints. There are also pieces of factory equipment, government systems — or even animatronic figures — that still rely on floppy disks.

And in San Francisco, the Muni Metro light railway, which launched in 1980, won't start up each morning unless the staff in charge pick up a floppy disk and slip it into the computer that controls the railway's Automatic Train Control System, or ATCS. "The computer has to be told what it's supposed to do every day," explains a spokesman for the San Francisco Municipal Transport Agency (SFMTA). "Without a hard drive, there is nowhere to install software on a permanent basis."

This computer has to be restarted in such a way repeatedly, he adds — it can't simply be left on, for fear of its memory degrading.
The article also includes this quote from a cybersecurity expert at Pen Test Partners. "If floppy was the only interface, the only way to get malware on to [the computer] would be via said floppy disk. That's quite a limiting factor for the attacker..."

Brian Shelton's type 1 diabetes was treated with an infusion of insulin-producing pancreas cells (grown from stem cells). In 2021, the New York Times reported: Now his body automatically controls its insulin and blood sugar levels. Shelton, now 64, may be the first person cured of the disease with a new treatment that has experts daring to hope that help may be coming for many of the 1.5 million Americans suffering from Type 1 diabetes. "It's a whole new life," Shelton said. Diabetes experts were astonished but urged caution. The study is continuing and will take five years, involving 17 people with Type 1 diabetes.
"By fall 2023, three patients, including Shelton, had achieved insulin independence by day 180 post-transplant," MedScape reported (in January of 2024): In the phase 1/2 study, 14 patients with type 1 diabetes and impaired hypoglycemia awareness or recurrent hypoglycemia received portal vein infusions of VX-880 [Vertex Pharmaceutical's pancreatic islet cell replacement therapy] along with standard immunosuppression. As of the last data cut, all 14 patients demonstrated islet cell engraftment and production of endogenous insulin. After more than 90 days of follow-up, 13 of the patients have achieved A1c levels < 7% without using exogenous insulin.
Brian Shelton and another patient died, and while Vertex says their deaths were unrelated to the treatment, they have "placed the study on a protocol-specified pause, pending review of the totality of the data by the independent data monitoring committee and global regulators." (MedScape adds that Vertex "is continuing with a phase 1/2 clinical trial of a different product, VX-264, which encapsulates the same VX-880 cells in a device designed to eliminate the need for immunosuppression.")

And meanwhile, a new study in China (again using stem cell-derived islet tissue) has provided "encouraging evidence that islet tissue replacement is an effective cure for diabetic patients," the researchers wrote in Nature. The treatment was administered to 59-year-old, type-2 diabetic.

"Marked changes in the patient's glycemic control were observed as early as week 2," the researchers write, and after week 32, the patient's Time In Tight Range (TITR) "had readily reached 99% and was maintained thereafter."

Thanks to long-time Slashdot reader hackingbear for sharing the news.

The Dillo browser dates back to 1999, writes the Register, with its own rendering engine. And now Dillo "has returned with a new release, version 3.1.

"It's nearly nine years after version 3.05 appeared on the last day of June 2015." Version 3.1 incorporates dozens of fixes and improvements, as the official announcement describes.

Project lead Rodrigo Arias Mallo announced his resurrection attempt on Hacker News early this year. He has taken the last available code from the project's Mercurial repository, incorporated about 25 outstanding fixes, and added as many again of his own.

Dillo is a super-lightweight graphical web browser for Unix-like OSes, written using the Fast Light Toolkit. The latest version has a number of new features, although one of the most significant is support for Transport Layer Security. TLS is the successor to SSL, with a Microsoft-approved name. Dillo 3.1 supports it thanks to the Mbed-TLS library.
It doesn't support frames, embedded media playback, or JavaSccript — but it can run on very low-end hardware...

Thanks to Lproven (Slashdot reader #6,030) for sharing the news.

"Does a levitating robot train on the moon sound far-fetched?" asks LiveScience.

"NASA doesn't seem to think so, as the agency has just greenlit further funding for a study looking into the concept." The project, called "Flexible Levitation on a Track" (FLOAT), has been moved to phase two of NASA's Innovative Advanced Concepts program (NIAC) , which aims to develop "science fiction-like" projects for future space exploration. The FLOAT project could result in materials being transported across the moon's surface as soon as the 2030s, according to the agency... According to NASA's initial design, FLOAT will consist of magnetic robots levitating over a three-layer film track to reduce abrasion from dust on the lunar surface. Carts will be mounted on these robots and will move at roughly 1 mph (1.61 km/h). They could transport roughly 100 tons (90 metric tons) of material a day to and from NASA's future lunar base.
"A durable, long-life robotic transport system will be critical to the daily operations of a sustainable lunar base in the 2030's," according to NASA's blog post, arguing it could be used to

• Transport moon materials mined to produce on-site resources like water, liquid oxygen, liquid hydrogen, or construction materials

• Transport payloads around the lunar base and to and from landing zones or other outposts

Thanks to long-time Slashdot reader AmiMoJo for sharing the article.

Thursday CNN reported: The Oscar-winning team behind the nearly $6 billion blockbuster "Lord of the Rings" and "The Hobbit" trilogies is reuniting to produce two new films. The first of the new projects from Sir Peter Jackson, Fran Walsh and Philippa Boyens is tentatively titled "Lord of the Rings: The Hunt for Gollum," Warner Bros. Discovery announced Thursday. It will be directed by "LOTR" alum Andy Serkis.
But "amid the news," TMZ reports, "a famous short film about it got yanked ... only to be revived on YouTube a day later." A viral short film called "The Hunt for Gollum" — which got uploaded to YouTube about 15 years ago — has been praised among Tolkien fans for years as a stellar piece of fan fiction and art, which while not sanctioned by Warner Bros., still held its own and looked damn good. On Thursday, WB announced they were making a brand new installment to their film franchise with the same title — which led to the short being taken down on a copyright claim ... but it seems Warner has backed off, 'cause about 12 hours or so later, it's up again...!

Sources with direct knowledge tell us the copyright claim got applied in error ... and the studio realized that, so they removed it and YouTube did their thing. The director of the short, Chris Bouchard, uploaded an email he got from YT saying the copyright claim had been released ... confirming WB retreated all on their own. He tells TMZ ... "We're just happy to hear folks remembered our film somewhat fondly, low-fi effort that it is. And grateful as of course fan films are in strange legal territory."

What happened when OpenAI ran out of English-language training data in 2021?

They just created a speech recognition tool that could transcribe the audio from YouTube videos, reports The New York Times, as part of an investigation arguing that tech companies "including OpenAI, Google and Meta have cut corners, ignored corporate policies and debated bending the law" in their search for AI training data. [Alternate URL here.] Some OpenAI employees discussed how such a move might go against YouTube's rules, three people with knowledge of the conversations said. YouTube, which is owned by Google, prohibits use of its videos for applications that are "independent" of the video platform. Ultimately, an OpenAI team transcribed more than 1 million hours of YouTube videos, the people said. The team included Greg Brockman, OpenAI's president, who personally helped collect the videos, two of the people said. The texts were then fed into a system called GPT-4...

At Meta, which owns Facebook and Instagram, managers, lawyers and engineers last year discussed buying the publishing house Simon & Schuster to procure long works, according to recordings of internal meetings obtained by the Times. They also conferred on gathering copyrighted data from across the internet, even if that meant facing lawsuits. Negotiating licenses with publishers, artists, musicians and the news industry would take too long, they said.

Like OpenAI, Google transcribed YouTube videos to harvest text for its AI models, five people with knowledge of the company's practices said. That potentially violated the copyrights to the videos, which belong to their creators. Last year, Google also broadened its terms of service. One motivation for the change, according to members of the company's privacy team and an internal message viewed by the Times, was to allow Google to be able to tap publicly available Google Docs, restaurant reviews on Google Maps and other online material for more of its AI products...

Some Google employees were aware that OpenAI had harvested YouTube videos for data, two people with knowledge of the companies said. But they didn't stop OpenAI because Google had also used transcripts of YouTube videos to train its AI models, the people said. That practice may have violated the copyrights of YouTube creators. So if Google made a fuss about OpenAI, there might be a public outcry against its own methods, the people said.
The article adds that some tech companies are now even developing "synthetic" information to train AI.

"This is not organic data created by humans, but text, images and code that AI models produce — in other words, the systems learn from what they themselves generate."