Ars Technica

On Monday, OpenAI CEO Sam Altman publicly rejected an unsolicited Elon Musk-led attempt to purchase OpenAI for $97.4 billion. The Wall Street Journal reports that the offer was backed by Musk's own company, xAI, in addition to several investors in Musk's other businesses.

After the Wall Street Journal broke news of the purchase offer Monday afternoon, Altman shifted the offer's decimal point in a joke publicly posted on X, saying, "no thank you but we will buy twitter for $9.74 billion if you want."

Musk—who recently changed his X name to "Harry Bōlz" as a reference to the nickname for a teenage member of his DOGE group that is currently embroiled in what some legal experts consider a constitutional crisis for the US federal government—replied to Altman on X with one word: "Swindler."

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Last October, United Launch Alliance started stacking its third Vulcan rocket on a mobile launch platform in Florida in preparation for a mission for the US Space Force by the end of the year.

That didn't happen, and ULA is still awaiting the Space Force's formal certification of its new rocket, further pushing out delivery schedules for numerous military satellites booked to fly to orbit on the Vulcan launcher.

Now, several months after stacking the next Vulcan rocket, ULA has started taking it apart. First reported by Spaceflight Now, the "de-stacking" will clear ULA's vertical hangar for assembly of an Atlas V rocket—the Vulcan's predecessor—to launch the first batch of operational satellites for Amazon's Kuiper Internet constellation.

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Apple has released new security fixes for iPhones and iPads in the form of iOS 18.3.1 and iPadOS 18.3.1. According to Apple's release notes, these updates patch an actively exploited security flaw in the USB Restricted Mode feature, which requires users to unlock their devices periodically to continue using USB data connections via a device's Lightning or USB-C port.

Apple says that the vulnerability, labeled CVE-2025-24200, "may have been exploited in an extremely sophisticated attack against specific targeted individuals." We don't know anything more specific about who those individuals are or why they might have been targeted.

Apple has also supplied an identical fix for older iPads in the form of iPadOS 17.7.5, which is still being updated on old models like the 2nd-generation 12.9-inch iPad Pro, the 10.5-inch iPad Pro, and the 6th-generation iPad.

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US Vice President JD Vance has warned Europe not to adopt “overly precautionary” regulations on artificial intelligence as the US and the UK refused to join dozens of other countries in signing a declaration to ensure that the technology is “safe, secure and trustworthy.”

The two countries held back from signing the communique agreed by about 60 countries at the AI Action summit in Paris on Tuesday as Vance vowed that the US would remain the dominant force in the technology.

“The Trump administration will ensure that the most powerful AI systems are built in the US, with American-designed and manufactured chips,” Vance told an audience of world leaders and tech executives at the summit.

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Utility terrain vehicles, also known as side-by-sides, are multi-seat off-road vehicles used for work or play, and their use is exploding around the globe. The market was once entirely composed of glorified golf carts, but we're now seeing plenty of wild-looking off-road monsters with the kind of extreme performance that puts many full-size off-roaders to shame.

Whatever it's used for, the average UTV lined up outside your local powersports dealer today is a serious machine—and it's usually sold with a serious sticker price to match. That's certainly the case with the one we're looking at today, the Polaris Ranger XP Kinetic Ultimate.

As that lengthy nomenclature suggests, this is a powerful, capable, well-rounded UTV. It also happens to be electric, offering 80 miles (129 km) of range from a 29.8-kWh battery, which powers an electric motor sourced from Zero Motorcycles, with 110 hp (82 kW) and a healthy 140 lb-ft (190 Nm) of torque.

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On Friday, the National Institutes of Health (NIH) announced a sudden change to how it handles the indirect costs of research—the money that pays for things like support services and facilities maintenance. These costs help pay universities and research centers to provide the environment and resources all their researchers need to get research done. Previously, these had been set through negotiations with the university and audits of the spending. These averaged roughly 30 percent of the value of the grant itself and would frequently exceed 50 percent.

The NIH announcement set the rate at 15 percent for every campus. The new rate would start today and apply retroactively to existing grants, meaning most research universities are currently finding themselves facing catastrophic budget shortfalls.

Today, a coalition of 22 states filed a suit that seeks to block the new policy, alleging it violated both a long-standing law and a budget rider that Congress had passed in response to a 2017 attempt by Trump to drastically cut indirect costs. The suit seeks to prevent the new policy or its equivalent from being applied—something that Judge Angel Kelley of the District of Massachusetts granted later in the day. While that injunction only applies to research centers located in the states that have joined the suit, a separate suit was filed in the same district by a group of medical organizations, some of them (such as the Association of American Medical Colleges), have members throughout the country. As a result, Judge Kelley issued a separate ruling that extended the injunction to the remaining states.

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OpenAI is entering the final stages of designing its long-rumored AI processor with the aim of decreasing the company's dependence on Nvidia hardware, according to a Reuters report released Monday. The ChatGPT creator plans to send its chip designs to Taiwan Semiconductor Manufacturing Co. (TSMC) for fabrication within the next few months, but the chip has not yet been formally announced.

The OpenAI chip's full capabilities, technical details, and exact timeline are still unknown, but the company reportedly intends to iterate on the design and improve it over time, giving it leverage in negotiations with chip suppliers—and potentially granting the company future independence with a chip design it controls outright.

In the past, we've seen other tech companies, such as Microsoft, Amazon, Google, and Meta, create their own AI acceleration chips for reasons that range from cost reduction to relieving shortages of AI chips supplied by Nvidia, which enjoys a near-market monopoly on high-powered GPUs (such as the Blackwell series) for data center use.

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The first-ever National Nature Assessment—which was based on significant public feedback and strove to reveal how nature loss influences climate change and impacts humanity—may still see the light of day after the Trump administration abruptly ended the ambitious project.

Researchers involved told The New York Times that the nature report was "too important to die" and that an "amazingly broad consensus" remains among its mostly volunteer authors, so the expansive report must be completed and released to the public.

The first draft of the report was due on Tuesday, so the bulk of the initial work appears mostly done. Although the webpage for the project has been deleted, an archived version shows that researchers had expected to spend the rest of 2025 seeking external review and edits before releasing the final report in late 2026.

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T-Mobile yesterday announced more details of its new service powered by Starlink and said Verizon and AT&T customers can use the satellite offering, too. The standard price will be $15 a month as an add-on for T-Mobile customers, and $20 a month for people who don't have T-Mobile as their primary carrier.

While we've written numerous articles about the Starlink/T-Mobile collaboration over the past two and a half years, the service's beta test and a Super Bowl commercial are raising awareness that it exists. In this article we'll answer some questions you might have about T-Mobile Starlink (yes, T-Mobile Starlink is the official name of the service).

Over the past 13 months, SpaceX's Starlink division has launched about 450 Direct to Cell satellites that can provide service to mobile phones in areas where there are no cell towers. Starlink is partnering with cellular carriers in multiple countries, and T-Mobile is its primary commercial partner in the US.

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Here we (maybe) go again: Reports from a handful of early adopters of Nvidia's new GeForce RTX 5090 graphics card are reporting that their power cables are melting (so far, there's at least one report on YouTube and one on Reddit, as reported by The Verge). This recalls a similar situation from early in the RTX 4090's life cycle, when power connectors were melting and even catching fire, damaging the GPUs and power supplies.

After much investigation and many guesses from Nvidia and other testers, the 4090's power connector issues ended up being blamed on what was essentially user error; the 12VHPWR connectors were not being inserted all the way into the socket on the GPU or were being bent in a way that created stress on the connection, which caused the connectors to run hot and eventually burst into flames.

The PCI-SIG, the standards body responsible for the design of the new connector, claimed that the design of the 12VHPWR connector itself was sound and that any problems with it should be attributed to the manufacturers implementing the standard. Partly in response to the 4090 issues, the 12VHPWR connector was replaced by an updated standard called 12V-2x6, which uses the same cables and is pin-compatible with 12VHPWR, but which tweaked the connector to ensure that power is only actually delivered if the connectors are firmly seated. The RTX 50-series cards use the 12V-2x6 connector.

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If you live or drive in Austin, Texas, you might start seeing some new-looking Teslas on your roads later this summer. Tesla says it wants to start offering rides for money in the two-seater "Cybercab" that the company revealed last year at a Hollywood backlot. California might be the place with enough glitz to unleash that particular stock-bumping news to the world, but the Golden State is evidently far too restrictive for a company like Tesla to truck with. Instead, the easygoing authorities in Texas provide a far more attractive environment when it comes to putting driverless rubber on the road.

During the early days of its autonomous vehicle (AV) ambitions, Tesla did its testing in California, like most of the rest of the industry. California was early to lay down laws and regulations for the nascent AV industry, a move that some criticized as premature and unnecessarily restrictive. Among the requirements has been the need to report test mileage and disengagements, reports that revealed that Tesla's testing has in fact been extremely limited within that state's borders since 2016.

Other states, mostly ones blessed with good weather, have become a refuge for AV testing away from California's strictures, especially car-centric cities like Phoenix, Arizona, and Austin, Texas. Texas amended its transportation code in 2017 to allow autonomous vehicles to operate on its roads, and it took away any ability for local governments to restrict testing or deployment. By contrast, companies like Waymo and the now-shuttered Cruise were given much more narrow permission to deploy only in limited parts of California.

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While writing a wide-ranging history of Windows Minesweeper for Boss Fight Books in 2023, I ended up playing many variations of Microsoft's beloved original game. Those include versions with hexagonal tiles, versions with weird board shapes, and versions that extend Minesweeper into four dimensions or more, to name just a few.

Almost all these variants messed a little too much with the careful balance of simplicity, readability, reasoning, and luck that made the original Minesweeper so addictive. None of them became games I return to day after day.

But then I stumbled onto Dragonsweeper, a free browser-based game that indie developer Daniel Benmergui released unceremoniously on itch.io last month. In the weeks since I discovered it, the game has become my latest puzzle obsession, filling in a worrying proportion of my spare moments with its addictive, simple RPG-tinged take on the Minesweeper formula.

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BMW has pledged to continue investing in combustion engine and hybrid technology as it warned of a “rollercoaster ride” in the US transition to electric vehicles following the return of Donald Trump as president.

Board member Jochen Goller said the group remained optimistic about sales of petrol and plug-in hybrids in the US even if demand for EVs slowed over the next few years on the back of policy changes under the new administration.

“I think it would be naive to believe that the move towards electrification is a one-way road. It will be a rollercoaster ride,” Goller, who is in charge of customer, brands, and sales, told the Financial Times at BMW’s headquarters in Munich.

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CenturyLink hasn't broken its annoying habit of leaving customers without service for weeks or months and repeatedly failing to show up for repair appointments.

We've written about CenturyLink's failure to fix long outages several times in the past year and a half. In each case, desperate customers contacted Ars because the telecom provider didn't reconnect their service. And each time, CenturyLink finally sprang into action and fixed the problems shortly after hearing from an Ars reporter.

Unfortunately, it keeps happening, and CenturyLink (also known as Lumen) can't seem to explain why. In only the last two months, we heard from CenturyLink customers in three states who were without service for periods of between three weeks and over four months.

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Since Mike Tyson's Punch-Out was first released on the NES in 1987, millions of players have undertaken millions more digital matches against one of the hardest video game bosses ever—Tyson himself (or, later, the reskinned "Mr. Dream"). Only a small percentage of those players could survive Tyson's flurry of instant-knockdown uppercuts and emerge victorious with the undisputed World Video Boxing Association championship. Even fewer had fast enough fingers to take out Tyson in the first round.

In all this time, no one has been able to register a TKO on Tyson in less than two minutes on the ever-present in-game clock (which runs roughly three times as quickly as a real-time clock). At least, that was true until this weekend, when popular speedrunner and speedrun historian Summoning Salt pulled off a 1:59.97 knockout after what he says was "75,000 attempts over nearly 5 years."

Breaking the storied 2:00 barrier on Tyson is a matter of both incredible skill and incredibly unlikely luck. As Summoning Salt himself started documenting in a 2017 video, getting the quickest possible Tyson TKO requires throwing 21 "frame perfect" punches throughout the fight, each within a 1/60th of a second window. Punch too early and those punches do slightly less damage, making the fight take just a bit longer. Too late and Tyson will throw up a block, negating the punch entirely.

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