When suspicion began to mount that the young prosecutor, Yujin Choi, might have faked her sexual misconduct allegations against a Denver District Attorney's Office colleague, investigators asked to examine Choi's laptop and cell phone. But just before Choi was to have turned them in, her devices suffered a series of unlikely accidents.

First, she said, she managed to drop her phone into a filled bathtub. When she pulled the phone out of the water and found it was not working, Choi went to her laptop in order to make a video call. When the call ended, Choi then knocked over a bottle of water—whoops!—directly onto the computer, which was also taken out of commission. So, when the day came to hand in her devices, neither was working.

"I’m devastated that I may have tanked the investigation on my own, but that I also lost all of my personal data that were very important to me," Choi wrote to investigators. She had even, she added, gone to the local Apple Store in an attempt to retrieve the data on the devices. No luck.

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Nvidia has good news and bad news for people building or buying gaming PCs.

The good news is that three of its four new RTX 50-series GPUs are the same price as or slightly cheaper than the RTX 40-series GPUs they're replacing. The RTX 5080 is $999, the same price as the RTX 4080 Super; the 5070 Ti and 5070 are launching for $749 and $549, each $50 less than the 4070 Ti Super and 4070 Super.

The bad news for people looking for the absolute fastest card they can get is that the company is charging $1,999 for its flagship RTX 5090 GPU, significantly more than the $1,599 MSRP of the RTX 4090. If you want Nvidia's biggest and best, it will cost at least as much as four high-end game consoles or a pair of decently specced midrange gaming PCs.

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Most scientific literature is published in for-profit journals that rely on subscriptions and paywalls to turn a profit. But that trend has been shifting as various governments and funding agencies are requiring that the science they fund be published in open-access journals. The transition is happening gradually, though, and a lot of the historical literature remains locked behind paywalls.

These paywalls can pose a problem for researchers who aren't at well-funded universities, including many in the Global South, which may not be able to access the research they need to understand in order to pursue their own studies. One solution has been Sci-Hub, a site where people can upload PDFs of published papers so they can be shared with anyone who can access the site. Despite losses in publishing industry lawsuits and attempts to block access, Sci-Hub continues to serve up research papers that would otherwise be protected by paywalls.

But what it's serving up may not always be the latest and greatest. Generally, when a paper is retracted for being invalid, publishers issue an updated version of its PDF with clear indications that the research it contains should no longer be considered valid. Unfortunately, it appears that once Sci-Hub has a copy of a paper, it doesn't necessarily have the ability to ensure it's kept up to date. Based on a scan of its content done by researchers from India, about 85 percent of the invalid papers they checked had no indication that the paper had been retracted.

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The piano-mover puzzle involves trying to transport an oddly shaped load across a constricted environment with various obstructions. It's one of several variations on classic computational motion-planning problems, a key element in numerous robotics applications. But what would happen if you pitted human beings against ants in a competition to solve the piano-mover puzzle?

According to a paper published in the Proceedings of the National Academy of Sciences, humans have superior cognitive abilities and, hence, would be expected to outperform the ants. However, depriving people of verbal or nonverbal communication can level the playing field, with ants performing better in some trials. And while ants improved their cognitive performance when acting collectively as a group, the same did not hold true for humans.

Co-author Ofer Feinerman of the Weizmann Institute of Science and colleagues saw an opportunity to use the piano-mover puzzle to shed light on group decision-making, as well as the question of whether it is better to cooperate as a group or maintain individuality. "It allows us to compare problem-solving skills and performances across group sizes and down to a single individual and also enables a comparison of collective problem-solving across species," the authors wrote.

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Lenovo announced a laptop today that experiments with a new way to offer laptop users more screen space than the typical clamshell design. The Lenovo ThinkBook Plus Gen 6 Rollable has a screen that can roll up vertically to expand from 14 inches diagonally to 16.7 inches, presenting an alternative to prior foldable-screen and dual-screen laptops.

The laptop, which Lenovo says is coming out in June, builds on a concept that Lenovo demoed in February 2023. That prototype had a Sharp-made panel that initially measured 12.7 inches but could unroll to present a total screen size of 15.3 inches. Lenovo's final product is working with a bigger display from Samsung Display, The Verge reported. Resolution-wise you're going from 2,000×1,600 pixels (about 183 pixels per inch) to 2,000×2,350 (184.8 ppi), the publication said.

Users make the screen expand by pressing a dedicated button on the keyboard or by making a hand gesture at the PC's webcam. Expansion entails about 10 seconds of loud whirring from the laptop’s motors. Lenovo executives told The Verge that the laptop was rated for at least 20,000 rolls up and down and 30,000 hinge openings and closings.

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Meta announced today that it's ending the third-party fact-checking program it introduced in 2016, and will rely instead on a Community Notes approach similar to what's used on Elon Musk's X platform.

The end of third-party fact-checking and related changes to Meta policies could help the company make friends in the Trump administration and in governments of conservative-leaning states that have tried to impose legal limits on content moderation. The operator of Facebook and Instagram announced the changes in a blog post and a video message recorded by CEO Mark Zuckerberg.

"Governments and legacy media have pushed to censor more and more. A lot of this is clearly political," Zuckerberg said. He said the recent elections "feel like a cultural tipping point toward once again prioritizing speech."

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Here at Ars, we're judicious about which of the many, many Switch 2 rumors we decide to highlight on this page. For every report on hardware power or magnetic Joy-Cons that we share, there are probably five others we see and decide are too lightly sourced, too unlikely, or just too plain obscure to spread here.

But when we started hearing reports that the Switch 2's Joy-Cons could be cradled on their sides and manipulated like a full-fledged gaming mouse, we knew the concept was one you'd want to hear about.

Rumor: More images of Switch 2 Joy-Cons have immerged from China.

Source: https://t.co/MplOUwKhRi pic.twitter.com/5ZdFmVlggl

— Stealth (@Stealth40k) January 5, 2025

The rumors of mouse-like functionality on the Switch 2's included controllers got supercharged over the weekend when a Reddit poster shared detailed photos of purported Switch 2 Joy-Cons, sourced from an unnamed Chinese social media user. In between the longer shoulder buttons along the Joy-Con's inner edge (SL and SR) and a new central connector port, eagle-eyed viewers noticed what looks suspiciously like the optical sensor that sits on the bottom of practically every mouse these days.

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The Pixel 4a, a well-regarded release in Google's line of budget-minded phones with nice cameras and decent stock software, was not supposed to get any more updates. This week, it will receive a rather uncommon one—one that intends to lower its reported battery life.

The Pixel 4a, released in the summer of 2020, was discontinued at the end of 2022. It received its last official software update in the summer of 2023, followed by a surprise security update in November 2023. Throughout 2024, there were no updates. This week, owners of the 4a (and likely many former owners) are getting a new update, along with an email titled "Changes coming to your Pixel 4a."

The email addresses "an upcoming software update for your Pixel 4a that will affect the overall performance and stability of its battery." The automatic software update to Android 13 "introduces new battery management features to improve the stability of your device," which will "reduce your battery's runtime and charging performance."

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On Monday, Nvidia announced Project DIGITS, a small desktop computer aimed at researchers, data scientists, and students who want to experiment with AI models—such as chatbots like ChatGPT and image generators—at home. The $3,000 device, which contains Nvidia's new GB10 Grace Blackwell Superchip, debuted at CES 2025 in Las Vegas. It will launch in May and can operate as a standalone PC or connect to a Windows or Mac machine.

At CES on Monday, Nvidia CEO Jensen Huang described the new system as "a cloud computing platform that sits on your desk." The company also designed Project DIGITS as a bridge between desktop development and cloud deployment. Developers can create and test AI applications locally on Project DIGITS, then move them to cloud services or data centers that use similar Nvidia hardware.

The GB10 chip inside the Project DIGITS computer combines an Nvidia Blackwell GPU with a 20-core Grace CPU based on Arm architecture. Nvidia developed the chip in partnership with MediaTek, and it connects to 128GB of memory and up to 4TB of storage inside the Project DIGITS enclosure.

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HBO released a new one-minute teaser for the second season of its post-apocalyptic drama The Last of Us during CES last night, along with a release date of April 2025. Based on developer Naughty Dog's hugely popular video game franchise, S2 is set five years after the events of the first season and finds the bond beginning to fray between plucky survivors Joel (Pedro Pascal) and Ellie (Bella Ramsey) while introducing several new characters.

(Spoilers for S1 below.)

The series takes place in the 20-year aftermath of a deadly outbreak of mutant fungus (Cordyceps) that turns humans into monstrous zombie-like creatures (the Infected, or Clickers). The world has become a series of separate totalitarian quarantine zones and independent settlements, with a thriving black market and a rebel militia known as the Fireflies making life complicated for the survivors. Joel is a hardened smuggler tasked with escorting the teenage Ellie across the devastated US, battling hostile forces and hordes of zombies, to a Fireflies unit outside the quarantine zone. Ellie is special: She is immune to the deadly fungus, and the hope is that her immunity holds the key to beating the disease.

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Tesla is the target of yet another federal safety probe, the fourth currently open by the National Highway Traffic Safety Administration's Office of Defects Investigation. Today's trouble concerns the automaker's "Smart Summon" and "Actually Smart Summon" features, which allow Tesla drivers to remotely control their vehicles via a smartphone app.

At least in theory, that is. In practice, NHTSA says it's aware of multiple crash allegations "where the user had too little reaction time to avoid a crash, either with the available line of sight or releasing the phone app button, which stops the vehicle’s movement."

Worse yet, Tesla has failed to report any of these incidents to the safety regulator, which has a standing general order that requires any automaker or operator of autonomous or partially automated vehicles to report crashes involving such systems that occur on publicly accessible roads.

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The annual Consumer Electronics Show got underway in Las Vegas this week, but Winter Storm Blair unraveled my plan to be on the ground to check things out in person. That means I still haven't had an in-person look at the Sony Honda Mobility Afeela, a new electric sedan that goes on sale in California later this year.

Sony stunned everyone by first showing off an electric concept car at CES in 2020. Meant to showcase the Japanese technology company's wide range of products, from sensors to digital entertainment, the concept left many scratching their heads about Sony's true intention here—surely the company wasn't also about to start making cars?

But that turned out to be exactly the plan. Although Sony began developing its EV with the contract manufacturer (and tier 1 supplier) Magna Steyr, the car—now called the Afeela 1—will be built by Honda, which formed a strategic alliance with Sony to create the aforementioned Sony Honda Mobility, which will sell the new car.

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In 2012, an industry-wide coalition of hardware and software makers adopted Secure Boot to protect Windows devices against the threat of malware that could infect the BIOS and, later, its successor, the UEFI, the firmware that loaded the operating system each time a computer booted up.

Firmware-dwelling malware raises the specter of malware that infects the devices before the operating system even loads, each time they boot up. From there, it can remain immune to detection and removal. Secure Boot uses public-key cryptography to block the loading of any code that isn’t signed with a pre-approved digital signature.

2018 calling for its BIOS

Since 2016, Microsoft has required all Windows devices to include a strong, trusted platform module that enforces Secure Boot. To this day, organizations widely regard Secure Boot as an important, if not essential, foundation of trust in securing devices in some of the most critical environments.

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Once again, we're back with our annual power ranking of US launch companies. 2024 was the third year Ars compiled a list of the most accomplished rocket companies in the United States with the goal of sparking debate, discussion, and appreciation for the challenge of operating a successful launch company.

This is a difficult business, both technically and financially. We salute all the engineers, technicians, and business development people out there giving this industry a go.

Please note that this is a subjective list, although hard metrics such as total launches, tonnage to orbit, success rate, and more were all important factors in our decisions. And our focus remains on what each company accomplished in 2024, not on what they might do in the future.

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Apple plans to release a software update that is meant to help users understand better that its notification summaries are AI-generated and may contain errors, according to a recent BBC news story. The update is a response to reports that the summaries gave users misleading information about world events.

For example, one false summary suggested to at least one user that Luigi Mangione, the alleged murderer of UnitedHealthcare CEO Brian Thompson, had committed suicide. The notification in question was meant to summarize the most important tidbits from 22 BBC news app notifications, according to a widely circulated screenshot.

Apple hasn't publicly specified exactly what will be changed to better inform users—only that it will be a software change that will "further clarify" when the notifications have been generated via the feature that resides under the Apple Intelligence umbrella.

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Federal toxicology researchers on Monday finally published a long-controversial analysis that claims to find a link between high levels of fluoride exposure and slightly lower IQs in children living in areas outside the US, mostly in China and India. As expected, it immediately drew yet more controversy.

The study, published in JAMA Pediatrics, is a meta-analysis, a type of study that combines data from many different studies—in this case, mostly low-quality studies—to come up with new results. None of the data included in the analysis is from the US, and the fluoride levels examined are at least double the level recommended for municipal water in the US. In some places in the world, fluoride is naturally present in water, such as parts of China, and can reach concentrations several-fold higher than fluoridated water in the US.

The authors of the analysis are researchers at the National Toxicology Program at the National Institute of Environmental Health Sciences. For context, this is the same federal research program that published a dubious analysis in 2016 suggesting that cell phones cause cancer in rats. The study underwent a suspicious peer-review process and contained questionable methods and statistics.

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Disney is buying Fubo and plans to merge the sports streaming platform with its Hulu + Live TV service, gaining 70 percent ownership of the company that up until today was suing it over antitrust concerns and allegations of anticompetitive practices.

According to Fubo’s announcement today, the unified company will be known as Fubo, and Fubo executives will run it. People will also continue to be able to subscribe to Fubo without subscribing to Hulu + Live TV and vice versa. Also part of the announcement is the revelation that Fubo has settled its antitrust lawsuit against Disney, Fox, and Warner Bros. Discovery (WBD) over Venu, a joint venture sports app that the companies plan to launch and that Fubo was seeking to block, citing the three firms' allegedly anticompetitive practices.

Fubo had previously claimed that Disney, Fox, and WBD had forced it to pay for irrelevant channels that don’t appeal to sports fans by bundling those networks with sports networks. Fubo’s lawsuit accused Disney and Fox of forcing it to spend millions on unwanted content and forcing it “to drop valuable channels” through price hikes.

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The Waymo self-driving company says it has fixed a problem that caused a car to repeatedly circle a parking lot for about five minutes while its rider was trying to get to an airport.

Last month, Mike Johns posted a video on LinkedIn showing what happened after he was picked up by a Waymo self-driving car in Scottsdale, Arizona. Johns' post said the car made eight circles. After a Waymo support agent helped get the car moving in the right direction, he was driven to the airport in time to make his flight.

"Why is this happening to me on a Monday? I'm in a Waymo car and this car is just going in circles... I got a flight to catch, why is this thing going in a circle? I'm getting dizzy," he said in the video.

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AMD's CES announcements include a tease about next-gen graphics cards, a new flagship desktop CPU, and a modest refresh of its processors for handheld gaming PCs. But the company's largest announcement, by volume, is about laptop processors.

Today the company is expanding the Ryzen AI 300 lineup with a batch of updated high-end chips with up to 16 CPU cores and some midrange options for cheaper Copilot+ PCs. AMD has repackaged some of its high-end desktop chips for gaming laptops, including the first Ryzen laptop CPU with 3D V-Cache enabled. And there's also a new-in-name-only Ryzen 200 series, another repackaging of familiar silicon to address lower-budget laptops.

Ryzen AI 300 is back, along with high-end Max and Max+ versions

Ryzen AI is back, with Max and Max+ versions that include huge integrated GPUs. Credit: AMD

We came away largely impressed by the initial Ryzen AI 300 processors in August 2024, and new processors being announced today expand the lineup upward and downward.

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AMD's batch of CES announcements this year includes just two new products for desktop PC users: the new Ryzen 9 9950X3D and 9900X3D. Both will be available at some point in the first quarter of 2025.

Both processors include additional CPU cores compared to the 9800X3D that launched in November. The 9900X3D includes 12 Zen 5 CPU cores with a maximum clock speed of 5.5 GHz, and the 9950X3D includes 16 cores with a maximum clock speed of 5.7 GHz. Both include 64MB of extra L3 cache compared to the regular 9900X and 9950X, for a total cache of 144MB and 140MB, respectively; games in particular tend to benefit disproportionately from this extra cache memory.

But the 9950X3D and 9900X3D aren't being targeted at people who build PCs primarily to game—the company says their game performance is usually within 1 percent of the 9800X3D. These processors are for people who want peak game performance when they're playing something but also need lots of CPU cores for chewing on CPU-heavy workloads during the workday.

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