Author name: Rejus Almole

reddit-won’t-interfere-with-users-revolting-against-x-with-subreddit-bans

Reddit won’t interfere with users revolting against X with subreddit bans

A Reddit spokesperson told Ars that decisions to ban or not ban X links are user-driven. Subreddit members are allowed to suggest and institute subreddit rules, they added.

“Notably, many Reddit communities also prohibit Reddit links,” the Reddit representative pointed out. They noted that Reddit as a company doesn’t currently have any ban on links to X.

A ban against links to an entire platform isn’t outside of the ordinary for Reddit. Numerous subreddits ban social media links, Reddit’s spokesperson said. r/EarthPorn, a subreddit for landscape photography, for example, doesn’t allow website links because all posts “must be static images,” per the subreddit’s official rules. r/AskReddit, meanwhile, only allows for questions asked in the title of a Reddit post and doesn’t allow for use of the text box, including for sharing links.

“Reddit has a longstanding commitment to freedom of speech and freedom of association,” Reddit’s spokesperson said. They added that any person is free to make or moderate their own community. Those unsatisfied with a forum about Seahawks football that doesn’t have X links could feel free to make their own subreddit. Although, some of the subreddits considering X bans, like r/MadeMeSmile, already have millions of followers.

Meta bans also under discussion

As 404 Media noted, some Redditors are also pushing to block content from Facebook, Instagram, and other Meta properties in response to new Donald Trump-friendly policies instituted by owner Mark Zuckerberg, like Meta killing diversity programs and axing third-party fact-checkers.

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Fast radio burst in long-dead galaxy puzzles astronomers

A surprising source

FRBs are of particular interest because they can be used as probes to study the large-scale structure of the universe. That’s why Calvin Leung, a postdoc at the University of California, Berkeley, was so excited to crunch data from Canada’s CHIME instrument (Canadian Hydrogen Intensity Mapping Experiment). CHIME was built for other observations but is sensitive to many of the wavelengths that make up an FRB. Unlike most radio telescopes, which focus on small points in the sky, CHIME scans a huge area, allowing it to pick out FRBs even though they almost never happen in the same place twice.

Leung was able to combine data from several different telescopes to narrow down the likely position of a repeating FRB, first detected in February 2024, located in the constellation Ursa Minor. When he and his CHIME collaborators further refined the accuracy of the location by averaging many bursts from the FRB, they discovered that this FRB originated on the outskirts of a long-dead distant galaxy. That throws a wrench into the magnetar hypothesis because why would a dead galaxy in which no new stars are forming host a magnetar?

It’s the first time an FRB has been found in such a location, and it’s also the furthest away from its galaxy. CHIME currently has two online outrigger radio arrays in place—companion telescopes to the original CHIME radio array in British Columbia. A third array comes online this week in Northern California, and according to Leung, it should enable astronomers to pinpoint FRB sources much more accurately—including this one. Data has already been incorporated from an outrigger in West Virginia, confirming the published position with a 20-times improvement in precision.

“This result challenges existing theories that tie FRB origins to phenomena in star-forming galaxies,” said co-author Vishwangi Shah, a graduate student at McGill University. “The source could be in a globular cluster, a dense region of old, dead stars outside the galaxy. If confirmed, it would make FRB 20240209A only the second FRB linked to a globular cluster.”

V. Shah et al., Astrophysical Journal Letters, 2025. DOI: 10.3847/2041-8213/ad9ddc  (About DOIs).

T. Eftekhari et al., Astrophysical Journal Letters, 2025. DOI: 10.3847/2041-8213/ad9de2  (About DOIs).

Fast radio burst in long-dead galaxy puzzles astronomers Read More »

trump-announces-$500b-“stargate”-ai-infrastructure-project-with-agi-aims

Trump announces $500B “Stargate” AI infrastructure project with AGI aims

Video of the Stargate announcement conference at the White House.

Despite optimism from the companies involved, as CNN reports, past presidential investment announcements have yielded mixed results. In 2017, Trump and Foxconn unveiled plans for a $10 billion Wisconsin electronics factory promising 13,000 jobs. The project later scaled back to a $672 million investment with fewer than 1,500 positions. The facility now operates as a Microsoft AI data center.

The Stargate announcement wasn’t Trump’s only major AI move announced this week. It follows the newly inaugurated US president’s reversal of a 2023 Biden executive order on AI risk monitoring and regulation.

Altman speaks, Musk responds

On Tuesday, OpenAI CEO Sam Altman appeared at a White House press conference alongside Present Trump, Oracle CEO Larry Ellison, and SoftBank CEO Masayoshi Son to announce Stargate.

Altman said he thinks Stargate represents “the most important project of this era,” allowing AGI to emerge in the United States. He believes that future AI technology could create hundreds of thousands of jobs. “We wouldn’t be able to do this without you, Mr. President,” Altman added.

Responding to off-camera questions from Trump about AI’s potential to spur scientific development, Altman said he believes AI will accelerate the discoveries for cures of diseases like cancer and heart disease.

Screenshots of Elon Musk challenging the Stargate announcement on X.

Screenshots of Elon Musk challenging the Stargate announcement on X.

Meanwhile on X, Trump ally and frequent Altman foe Elon Musk immediately attacked the Stargate plan, writing, “They don’t actually have the money,” and following up with a claim that we cannot yet substantiate, saying, “SoftBank has well under $10B secured. I have that on good authority.”

Musk’s criticism has complex implications given his very close ties to Trump, his history of litigating against OpenAI (which he co-founded and later left), and his own goals with his xAI company.

Trump announces $500B “Stargate” AI infrastructure project with AGI aims Read More »

how-to-get-a-perfect-salt-ring-deposit-in-your-pasta-pot

How to get a perfect salt ring deposit in your pasta pot

Deposit morphologies for a settling particle. When increasing either the injection volume or the settling height, the deposit radius increases.

Deposit morphologies for a settling particle. When increasing either the injection volume or the settling height, the deposit radius increases. Credit: M. Souzy et al., 2025

They used spherical borosilicate glass beads of varying diameters to represent the grains of salt and loaded different fixed volumes of beads into cylindrical tubes. Then they slid open the tube’s bottom to release the beads, capturing how they fell and settled with a Nikon D300 camera placed at the top of the tank. The tank was illuminated from below by a uniform LED light screen and diffuser to get an even background.

The physicists found that gravity will pull a single particle to the bottom of the tank, creating a small wake drag that affects the flow of water around it. That perturbation becomes much more complicated when many large particles are released at once, each with its own wake that affects its neighbors. So, the falling particles start to shift horizontally, distributing the falling particles in an expanding circular pattern.

Particles released from a smaller height fall faster and form a pattern with a clean central region. Those released from a greater height take longer to fall to the bottom, and the cloud of particles expands radially until the particles are far enough apart not to be influenced by the wakes of neighboring particles such that they no longer form a cloud. In that case, you end up with a homogeneous salt ring deposit.

“These are the main physical ingredients, and despite its apparent simplicity, this phenomenon encompasses a wide range of physical concepts such as sedimentation, non-creeping flow, long-range interactions between multiple bodies, and wake entrainment,” said Souzy. “Things get even more interesting once you realize larger particles are more radially shifted than small ones, which means you can sort particles by size just by dropping them into a water tank. It was a great overall experience, because we soon realized our simple observation of daily life conceals a rich variety of physical mechanisms.”

Those phenomena are just as relevant outside the kitchen, according to the authors, most notably in such geophysical and industrial contexts as “the discharge of dredged materials and industrial waste into rivers lakes and oceans,” they wrote. “In scenarios involving contaminated waste, comprehending the behavior of both the solid waste and the interacting fluid is crucial.”

Physics of Fluids, 2025. DOI: 10.1063/5.0239386  (About DOIs).

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DC-area veterinarians on heightened alert amid potential inauguration risks

Veterinarians in the Washington, DC region have been put on alert for any unusual illnesses in their non-human patients amid today’s presidential inauguration—a nod to the significance of potential zoonotic bioterror threats.

In a recent letter to Virginia veterinarians, the state health department requested assistance in the “enhanced surveillance,” while noting that, currently, there is no report of threats or bioterrorism-related illnesses.

“As with any large-scale public event, there will be heightened security, and the region will be on alert or signs of bioterrorism or other potential threats,” the letter read. “Enhanced surveillance is being conducted out of an abundance of caution.”

Health officials are asking veterinarians to report any animals who develop an unusual, severe illness within 14 days of exposure to the National Mall area during the inaugural period between January 19 and January 21. The cases could include animals who travel to the area or who live there. If such a case arises, veterinarians should report the case “rapidly by phone” to the officials in the state’s Zoonotic Disease Program. That includes State Public Health Veterinarian Julia Murphy.

In an interview with Ars Technica, Murphy noted that the health department has requested enhanced surveillance from veterinarians in the past. “We did a similar thing for the last inauguration,” she said.

The recruitment of veterinarians highlights the threat posed by zoonotic diseases—that is, those that can transmit between animals and humans. And it demonstrates the value of a “One Health” approach to health, which recognizes the interconnection between animals, humans, and shared environments.

In emerging outbreaks or bioterror events, animal illnesses have the potential to act as sentinels—the first to show signs of a disease—as well as be informative for understanding the geographic scope and severity of an event, Murphy explained. For instance, the bacterium Francisella tularensis, which causes a potentially serious illness called tularemia, is particularly dangerous for rabbits and rodents. “Their incubation period can be quite short—typically, not always—but it can often be shorter than in people,” she said, referring to the time between an exposure to an illness and when symptoms develop. F. tularensis is considered a potential bioterror weapon and appears on the federal list of Select Agents and Toxins.

DC-area veterinarians on heightened alert amid potential inauguration risks Read More »

peeing-is-contagious-among-chimps

Peeing is contagious among chimps

Those results supported the initial hypothesis that chimps tended to urinate in sync rather than randomly. Further analysis showed that the closer a chimp was to another peeing chimp, the more likely the probability of that chimp peeing as well—evidence of social contagion. Finally, Onishi et al. wanted to explore whether social relationships (like socially close pairs, evidenced by mutual grooming and similar behaviors) influenced contagious urination. The only social factor that proved relevant was dominance, with less-dominant chimps being more prone to contagious urination.

There may still be other factors influencing the behavior, and more experimental research is needed on potential sensory cues and social triggers in order to identify possible underlying mechanisms for the phenomenon. Furthermore, this study was conducted with a captive chimp population; to better understand potential evolutionary roots, there should be research on wild chimp populations, looking at possible links between contagious urination and factors like ranging patterns, territory use, and so forth.

“This was an unexpected and fascinating result, as it opens up multiple possibilities for interpretation,” said coauthor Shinya Yamamoto, also of Kyoto University. “For instance, it could reflect hidden leadership in synchronizing group activities, the reinforcement of social bonds, or attention bias among lower-ranking individuals. These findings raise intriguing questions about the social functions of this behavior.”

DOI: Current Biology, 2025. 10.1016/j.cub.2024.11.052 (About DOIs).

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european-union-orders-x-to-hand-over-algorithm-documents

European Union orders X to hand over algorithm documents

Earlier in the week, Germany’s defence ministry and foreign ministry said they were suspending their activity on X, with the defence ministry saying it had become increasingly “unhappy” with the platform.

When asked if the expanded probe was a response to a discussion Musk conducted last week with AfD co-leader Alice Weidel, in which she was given free rein to promote her party’s platform and make false claims about Adolf Hitler, a Commission spokesperson said the new request helped “us monitor systems around all these events taking place.”

However, he said it was “completely independent of any political considerations or any specific events.”

“We are committed to ensuring that every platform operating in the EU respects our legislation, which aims to make the online environment fair, safe, and democratic for all European citizens,” said Henna Virkkunen, the Commission’s digital chief.

X did not immediately respond to a request for comment.

The Commission had been under recent political pressure to be tough on Musk’s X ahead of the Weidel interview.

Last week Damian Boeselager, member of the European parliament, wrote to Virkkunnen to demand a probe into whether the social media platform’s use of algorithms met the EU’s transparency requirements.

“There are allegations that Musk is boosting his own tweets,” Boeselager told the Financial Times last week. “The guy can be crazy but it is unfair if he’s amplifying who must listen to him.”

This story was updated shortly after publication with additional details.

© 2025 The Financial Times Ltd. All rights reserved. Not to be redistributed, copied, or modified in any way.

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under-new-law,-cops-bust-famous-cartoonist-for-ai-generated-child-sex-abuse-images

Under new law, cops bust famous cartoonist for AI-generated child sex abuse images

Late last year, California passed a law against the possession or distribution of child sex abuse material (CSAM) that has been generated by AI. The law went into effect on January 1, and Sacramento police announced yesterday that they have already arrested their first suspect—a 49-year-old Pulitzer-prize-winning cartoonist named Darrin Bell.

The new law, which you can read here, declares that AI-generated CSAM is harmful, even without an actual victim. In part, says the law, this is because all kinds of CSAM can be used to groom children into thinking sexual activity with adults is normal. But the law singles out AI-generated CSAM for special criticism due to the way that generative AI systems work.

“The creation of CSAM using AI is inherently harmful to children because the machine-learning models utilized by AI have been trained on datasets containing thousands of depictions of known CSAM victims,” it says, “revictimizing these real children by using their likeness to generate AI CSAM images into perpetuity.”

The law defines “artificial intelligence” as “an engineered or machine-based system that varies in its level of autonomy and that can, for explicit or implicit objectives, infer from the input it receives how to generate outputs that can influence physical or virtual environments.”

Under new law, cops bust famous cartoonist for AI-generated child sex abuse images Read More »

ios-18.3-beta-disables-news-notification-summaries-after-high-stakes-errors

iOS 18.3 beta disables news notification summaries after high-stakes errors

In our own extensive testing with Apple Intelligence notification summaries in iOS 18.1 and macOS 15.1, we observed many instances of summaries that were inaccurate or just plain weird. When you’re just getting updates from your Discords or group text threads, errors tend to be pretty low-stakes, at least. But when you’re getting notifications about war, murder, and politics, these kinds of errors have the potential to mislead and misinform.

The iOS 18.1 and 18.2 updates (along with iPadOS 18.2 and macOS Sequoia 15.2) enabled most of Apple’s promised Intelligence features across all the hardware that supports them. For the iPhone, that’s still only 2023’s iPhone 15 Pro and 2024’s iPhone 16 and iPhone 16 Pro.

The iOS 18.3 update is currently in its third beta release. The iOS 17.3, 16.3, and 15.3 updates have all been released in late January, so it’s likely that we’ll see the 18.3 update (and corresponding updates for iPadOS, macOS, and other Apple software) released at some point in the next few weeks.

iOS 18.3 beta disables news notification summaries after high-stakes errors Read More »

heroes,-villains,-and-childhood-trauma-in-the-mceu-and-dcu

Heroes, villains, and childhood trauma in the MCEU and DCU

They also limited their study to Marvel and DC characters depicted in major films, rather than including storylines from spinoff TV series. So Wanda Maximoff/The Scarlet Witch was not included since much of her traumatic backstory appeared in the series WandaVision. Furthermore, “We omitted gathering more characters from comic books in both Marvel and DC universes, due to their inconsistency in character development,” the authors wrote. “Comic book storylines often feature alternative plot lines, character arcs, and multiverse outcomes. The storytelling makes comic book characters highly inconsistent and challenging to score.”

With great power…

They ended up watching 33 films, with a total runtime of 77 hours and 5 minutes. They chose 19 male characters, eight female characters, and one gender-fluid character (Loki) as “subjects” for their study, applying the ACE questionnaire to their childhoods as portrayed in the films.

The results: “We found no statistically significant differences between heroes and villains, Marvel and DC characters, or men and women and ACE scores,” said Jackson. “This means that characters who were portrayed as having difficult childhoods were not more likely to be villains. This study somewhat refutes the idea that villains are a product of their experiences. Based on the films we watched, people chose to be heroes and that was what made the difference—not their experiences.”

Notably, Black Widow had the highest ACE score (eight) and yet still became an Avenger, though the authors acknowledge that the character did some bad things before then and famously wanted to wipe out the “red” in her ledger. She “represents resilience of characters who have experienced trauma,” the authors wrote, as well as demonstrating that “socio-ecological resilience, including access to social relationships and supportive communities, can play a mitigating role in the effect of ACEs.” The Joker, by contrast, scored a six and “wreaked havoc across Gotham City.”

Heroes, villains, and childhood trauma in the MCEU and DCU Read More »

rednote-may-wall-off-“tiktok-refugees”-to-prevent-us-influence-on-chinese-users

RedNote may wall off “TikTok refugees” to prevent US influence on Chinese users

Whether TikTok will be banned in the US in three days is still up in the air. The Supreme Court has yet to announce its verdict on the constitutionality of a law requiring TikTok to either sell its US operations or shut down in the US. It’s possible that the Supreme Court could ask for more time to deliberate, potentially delaying enforcement of the law as TikTok has requested until after Donald Trump takes office.

While the divest-or-sell law had bipartisan support when it passed last year, momentum has seemingly shifted this week. Senator Ed Markey (D-Mass.) has introduced a bill to extend the deadline ahead of a potential TikTok ban, and a top Trump adviser, Congressman Mike Waltz, has said that Trump plans to stop the ban and “keep TikTok from going dark,” the BBC reported. Even the Biden administration, whose justice department just finished arguing why the US needed to enforce the law to SCOTUS, “is considering ways to keep TikTok available,” sources told NBC News.

Many US RedNote users quickly banned

For RedNote and China, the app’s sudden popularity as the US alternative to TikTok seems to have come as a surprise. A Beijing-based independent industry analyst, Liu Xingliang, told Reuters that RedNote was “caught unprepared” by the influx of users.

To keep restricted content off the app, RedNote allegedly has since been “scrambling to find ways to moderate English-language content and build English-Chinese translation tools,” two sources familiar with the company told Reuters. Time’s reporting echoed that, noting that “Red Note is urgently recruiting English content moderators [Chinese]” became a trending topic Wednesday on the Chinese social media app Weibo.

Many analysts have suggested that Americans’ fascination with RedNote will be short-lived. Liu told Reuters that “American netizens are in a dissatisfied mood, and wanting to find another Chinese app to use is a catharsis of short-term emotions and a rebellious gesture.” But unfortunately, “the experience on it is not very good for foreigners.”

On RedNote, Chinese users have warned Americans that China censors way more content than they’re used to on TikTok. Analysts told The Washington Post that RedNote’s “focus on shopping and entertainment means it is often even more active in blocking content seen as too serious for the app’s target audience.” Chinese users warned Americans not to post about “politics, religion, and drugs” or risk “account bans or legal repercussions, including jail time,” Rest of World reported. Meanwhile, on Reddit, Americans received additional warnings about common RedNote scams and reasons accounts could be banned. But Rest of World noted that many so-called “TikTok refugees” migrating to RedNote do not “seem to know, or care, about platform rules.”

RedNote may wall off “TikTok refugees” to prevent US influence on Chinese users Read More »

at&t-kills-home-internet-service-in-ny-over-law-requiring-$15-or-$20-plans

AT&T kills home Internet service in NY over law requiring $15 or $20 plans

AT&T has stopped offering its 5G home Internet service in New York instead of complying with a new state law that requires ISPs to offer $15 or $20 plans to people with low incomes.

The decision was reported yesterday by CNET and confirmed by AT&T in a statement provided to Ars today. “While we are committed to providing reliable and affordable Internet service to customers across the country, New York’s broadband law imposes harmful rate regulations that make it uneconomical for AT&T to invest in and expand our broadband infrastructure in the state,” AT&T said. “As a result, effective January 15, 2025, we will no longer be able to offer AT&T Internet Air, our fixed-wireless Internet service, to New York customers.”

New York started enforcing its Affordable Broadband Act yesterday after a legal battle of nearly four years. Broadband lobby groups convinced a federal judge to block the law in 2021, but a US appeals court reversed the ruling in April 2024, and the Supreme Court decided not to hear the case last month.

The law requires ISPs with over 20,000 customers in New York to offer $15 broadband plans with download speeds of at least 25Mbps, or $20-per-month service with 200Mbps speeds. The plans only have to be offered to households that meet income eligibility requirements, such as qualifying for the National School Lunch Program, Supplemental Nutrition Assistance Program, or Medicaid.

AT&T’s Internet Air was launched in some areas in 2023 and is now available in nearly every US state. The standard price for Internet Air is $60 a month plus taxes and fees, or $47 when bundled with an eligible mobile service. Nationwide, AT&T said it added 135,000 Internet Air customers in the most recent quarter.

AT&T kills home Internet service in NY over law requiring $15 or $20 plans Read More »