ArsTechnica
Researchers figure out how to get fresh lithium into batteries
As the owner of a 3-year-old laptop, I feel the finite lifespan of lithium batteries acutely. It's still a great machine, but the cost of a battery replacement would take me a significant way down the path of upgrading to a newer, even greater machine. If only there were some way to just plug it in overnight and come back to a rejuvenated battery.
While that sounds like science fiction, a team of Chinese researchers has identified a chemical that can deliver fresh lithium to well-used batteries, extending their life. Unfortunately, getting it to work requires that the battery has been constructed with this refresh in mind. Plus it hasn't been tested with the sort of lithium chemistry that is commonly used in consumer electronics.
Finding the right chemistryThe degradation of battery performance is largely a matter of its key components gradually dropping out of use within the battery. Through repeated cyclings, bits of electrodes fragment and lose contact with the conductors that collect current, while lithium can end up in electrically isolated complexes. There's no obvious way to re-mobilize these lost materials, so the battery's capacity drops. Eventually, the only way to get more capacity is to recycle the internals into a completely new battery.
Robot with 1,000 muscles twitches like human while dangling from ceiling
On Wednesday, Clone Robotics released video footage of its Protoclone humanoid robot, a full-body machine that uses synthetic muscles to create unsettlingly human-like movements. In the video, the robot hangs suspended from the ceiling as its limbs twitch and kick, marking what the company claims is a step toward its goal of creating household-helper robots.
Poland-based Clone Robotics designed the Protoclone with a polymer skeleton that replicates 206 human bones. The company built the robot with the hopes that it will one day be able to operate human tools and perform tasks like doing laundry, washing dishes, and preparing basic meals.
The Protoclone reportedly contains over 1,000 artificial muscles built with the company's "Myofiber" technology, which builds on the McKibbin pneumatic muscle concept. These muscles work through mesh tubes containing balloons that contract when filled with hydraulic fluid, mimicking human muscle function. A 500-watt electric pump serves as the robot's "heart," pushing fluid at 40 standard liters per minute.
Asus’ new “Fragrance Mouse” is a wireless mouse that also smells
PC- and accessory-maker Asus has never been one to shy away from a strange idea, whether it's a tablet that you need to slide your smartphone into before you can use it, a laptop touchpad that's also a screen, or going with "Rock Solid, Heart Touching" as a corporate slogan. But an announcement the company made today stands out: Asus is launching something called the Asus Fragrance Mouse, a fairly regular-looking wireless mouse that also smells.
Yes, the main differentiating feature of the Fragrance Mouse is a "refillable vial" in its underside, next to the place where you put the battery and store its 2.4 GHz USB wireless receiver when not in use. The vial stores "aromatic oils" that "can be washed and refilled with different scents." Asus doesn't make any specific recommendations about the scents that you can put in the vial, so you have a lot of latitude as to what, exactly, you can make your mouse smell like.
Aside from the customizable stink, the Fragrance Mouse is a reasonably full-featured functional PC accessory. It supports Bluetooth as well as the USB wireless dongle, three DPI levels (1,200, 1,600, and 2,400) for customizing responsiveness, and understated white and pink color options. Asus says the mouse's switches are rated for 10 million clicks, ensuring that you will be able to smell your mouse for years to come.
“Bouncing” winds damaged Houston skyscrapers in 2024
On May 16, 2024, a powerful derecho swept through Houston, killing seven people and causing significant damage to several of the city's towering skyscrapers. Those buildings were constructed to withstand much stronger hurricane-force winds up to 67 meters per second, as one would get with a Category 4 hurricane. The derecho's winds peaked at 40 meters per second, well below that threshold. And when Hurricane Beryl hit Houston that July with roughly comparable wind speeds of 36 meters per second, the damage wasn't nearly so severe. Why would that be the case?
Engineers at Florida International University (FIU) in Miami think they've found the answer, according to a new paper published in the journal Frontiers in Built Environment. "We show that a type of highly localized strong winds called ‘downbursts,’ which were generated during the May derecho, can significantly impact tall buildings and facades due to their unique characteristics in comparison to hurricanes,” said co-author Amal Elawady. This is particularly the case for skyscrapers that are close together, creating a "wind-channeling" interference effect that increases pressure on walls and windows.
One might assume that hurricanes and derechos are similar in that they both produce markedly intense winds, but the origin and characteristics of those winds are very different, per the authors. Hurricanes are vast tropical storms that form over warm ocean waters and affect large areas, usually lasting for several days, accompanied by heavy rains, storm surges, waves, and yes, high winds. By contrast, derechos and downbursts are much more localized convective systems, producing hurricane-force winds but over a much smaller area and shorter period of time.
Elon Musk to “fix” Community Notes after they contradict Trump
Elon Musk apparently no longer believes that crowdsourcing fact-checking through Community Notes can never be manipulated and is, thus, the best way to correct bad posts on his social media platform X.
Community Notes are supposed to be added to posts to limit misinformation spread after a broad consensus is reached among X users with diverse viewpoints on what corrections are needed. But Musk now claims a "fix" is needed to prevent supposedly outside influencers from allegedly gaming the system.
"Unfortunately, @CommunityNotes is increasingly being gamed by governments & legacy media," Musk wrote on X. "Working to fix this."
F1 may ditch hybrids for V10s and sustainable fuels
High-revving naturally aspirated engines and their associated screaming soundtracks might be on their way back to Formula 1. Not with next year's rule changes—that will see even bigger lithium-ion batteries and an even more powerful electric motor, paired with a turbocharged V6. But the sport is starting to think more seriously about the technical rules that will go into effect in 2030, and in an Instagram post yesterday, the man in charge of those rules signaled that he's open to cars that might be louder, lighter, and less complicated.
Mohammed Ben Sulayem's tenure as president of the Federation Internationale de l'Automobile has been packed with controversy. The former rally driver has alienated many F1 drivers with clampdowns on jewelry and, most recently, swearing, as well as a refusal to explain what happens to the money the FIA collects as fines.
He also ruffled feathers when the FIA opened up the entry process for new teams into the sport and then approved an entry by Andretti Global. While the FIA said yes, the commercial side (which is owned by Liberty Media) and the teams wanted nothing to do with an 11th team—at least until the $200 million anti-dilution fee was more than doubled and Michael Andretti stepped aside.
RFK Jr. promptly cancels vaccine advisory meeting, pulls flu shot campaign
Just days after anti-vaccine advocate Robert F. Kennedy Jr. became the country's top health official, the Centers for Disease Control and Prevention has already pulled back some of its efforts to protect Americans with safe, lifesaving vaccines. The agency has indefinitely postponed a public meeting of its vaccine advisory committee and killed a campaign promoting seasonal flu shots.
Last weekend, a Washington Post columnist noted on Bluesky that the CDC's effective "Wild to Mild" seasonal flu shot campaign had vanished. The campaign highlighted how the seasonal vaccines can prevent influenza infections from becoming severe or life-threatening. It used animals as an analogy for the diminished threat of the flu virus after vaccination, juxtaposing a lion and a domestic kitten in one ad while showing an elephant and a mouse in another. The CDC page no longer leads to a "not found" landing page, but it wasn't restored either. It now redirects to a 2023 article announcing the campaign, which does not contain the shareable resources found on the original page. The removal is startling given that the US is currently battling one of the worst flu seasons in 15 years.
NPR first reported that CDC staff were told in a meeting Wednesday, February 19, the campaign was halted. In a story Thursday, Stat News added more context to the decision. According to the outlet's sources, the Department of Health and Human Services’ assistant secretary for public affairs informed the CDC that Kennedy wanted vaccine advertisements to emphasize "informed consent" instead.
As the Kernel Turns: Rust in Linux saga reaches the “Linus in all-caps” phase
Rust, a modern and notably more memory-safe language than C, once seemed like it was on a steady, calm, and gradual approach into the Linux kernel.
In 2021, Linux kernel leaders, like founder and leader Linus Torvalds himself, were impressed with the language but had a "wait and see" approach. Rust for Linux gained supporters and momentum, and in October 2022, Torvalds approved a pull request adding support for Rust code in the kernel.
By late 2024, however, Rust enthusiasts were frustrated with stalls and blocks on their efforts, with the Rust for Linux lead quitting over "nontechnical nonsense." Torvalds said at the time that he understood it was slow, but that "old-time kernel developers are used to C" and "not exactly excited about having to learn a new language." Still, this could be considered a normal amount of open source debate.
Notorious crooks broke into a company network in 48 minutes. Here’s how.
In December, roughly a dozen employees inside a manufacturing company received a tsunami of phishing messages that was so big they were unable to perform their day-to-day functions. A little over an hour later, the people behind the email flood had burrowed into the nether reaches of the company's network. This is a story about how such intrusions are occurring faster than ever before and the tactics that make this speed possible.
The speed and precision of the attack—laid out in posts published Thursday and last month—are crucial elements for success. As awareness of ransomware attacks increases, security companies and their customers have grown savvier at detecting breach attempts and stopping them before they gain entry to sensitive data. To succeed, attackers have to move ever faster.
Breakneck breakoutReliaQuest, the security firm that responded to this intrusion, said it tracked a 22 percent reduction in the “breakout time” threat actors took in 2024 compared with a year earlier. In the attack at hand, the breakout time—meaning the time span from the moment of initial access to lateral movement inside the network—was just 48 minutes.
Google’s cheaper YouTube Premium Lite subscription will drop Music
YouTube dominates online video, but it's absolutely crammed full of ads these days. A YouTube Premium subscription takes care of that, but ad blockers do exist. Google seems to have gotten the message—a cheaper streaming subscription is on the way that drops YouTube Music from the plan. You may have to give up more than music to get the cheaper rate, though.
Google started testing cheaper YouTube subscriptions in a few international markets, including Germany and Australia, over the past year. Those users have been offered the option of subscribing to the YouTube Premium plan, which runs $13.99 in the US, or a new plan that costs about half as much. For example, in Australia, the options are AU$23 for YouTube Premium or AU$12 for "YouTube Premium Lite."
The Lite plan drops YouTube Music but keeps ad-free YouTube, which is all most people want anyway. Based on the early tests, these plans will probably drop a few other features that you'd miss, including background playback and offline downloads. However, this plan could cost as little as $7–$8 in the US.
DeepSeek goes beyond “open weights” AI with plans for source code release
Last month, DeepSeek turned the AI world on its head with the release of a new, competitive simulated reasoning model that was free to download and use under an MIT license. Now, the company is preparing to make the underlying code behind that model more accessible, promising to release five open source repos starting next week.
In a social media post late Thursday, DeepSeek said the daily releases it is planning for its "Open Source Week" would provide visibility into "these humble building blocks in our online service [that] have been documented, deployed and battle-tested in production. As part of the open-source community, we believe that every line shared becomes collective momentum that accelerates the journey."
While DeepSeek has been very non-specific about just what kind of code it will be sharing, an accompanying GitHub page for "DeepSeek Open Infra" promises the coming releases will cover "code that moved our tiny moonshot forward" and share "our small-but-sincere progress with full transparency." The page also refers back to a 2024 paper detailing DeepSeek's training architecture and software stack.
Apple pulls end-to-end encryption in UK, spurning backdoors for gov’t spying
After the United Kingdom demanded that Apple create a backdoor that would allow government officials globally to spy on encrypted data, Apple decided to simply turn off encryption services in the UK rather than risk exposing its customers to snooping.
Apple had previously allowed end-to-end encryption of data on UK devices through its Advanced Data Protection (ADP) tool, but that ended Friday, a spokesperson said in a lengthy statement.
"Apple can no longer offer Advanced Data Protection (ADP) in the United Kingdom to new users and current UK users will eventually need to disable this security feature," Apple said.
Nissan’s latest desperate gamble—see if Tesla will buy the company
Senior politicians in Japan are not going to let Nissan die easily. The automaker has been struggling for some time now, with an outdated product portfolio, ongoing quarterly losses, and soon, the closure of factories and thousands of layoffs. The Japanese government has been trying to find a suitor and had hoped that Honda would do its patriotic duty and save its rival from extinction.
That deal—one branded "a desperate move" by former Nissan CEO and fugitive from Japanese justice Carlos Ghosn—fell apart last week after Renault demanded a price premium for its shares in Nissan, and Nissan demanded a merger of equals with Honda. In reality, it was always going to be a takeover, with very little in it for Honda in the way of complimentary product lines or access to new technologies.
Today, we learned of yet another desperate move—the former Japanese Prime Minister Yoshihide Suga is among a group that is trying to get Tesla to invest in Nissan instead.
SEC’s “scorched-earth” lawsuit against Coinbase to be dropped, company says
On Friday, a Coinbase executive declared the "war against crypto" over—"at least as it applies to Coinbase."
According to Coinbase Chief Legal Officer Paul Grewal, the US Securities and Exchange Commission (SEC) plans to drop its lawsuit against the largest US cryptocurrency exchange as the agency shifts to embrace Donald Trump's new approach to regulating cryptocurrency in the US.
The SEC sued Coinbase in 2023, accusing Coinbase of "operating its crypto asset trading platform as an unregistered national securities exchange, broker, and clearing agency" and "failing to register the offer and sale of its crypto asset staking-as-a-service program."
CES 2025 teases alarming smart TV future loaded with unwanted software, gimmicks
If you asked someone what they wanted from TVs released in 2025, I doubt they'd say "more software and AI." Yet, if you look at what TV companies have planned for this year, which is being primarily promoted at the CES technology trade show in Las Vegas this week, software and AI are where much of the focus is.
The trend reveals the implications of TV brands increasingly viewing themselves as software rather than hardware companies, with their products being customer data rather than TV sets. This points to an alarming future for smart TVs, where even premium models sought after for top-end image quality and hardware capabilities are stuffed with unwanted gimmicks.
LG’s remote regressionLG has long made some of the best—and most expensive—TVs available. Its OLED lineup, in particular, has appealed to people who use their TVs to watch Blu-rays, enjoy HDR, and the like. However, some features that LG is introducing to high-end TVs this year seem to better serve LG’s business interests than those users' needs.
Google loses in court, faces trial for collecting data on users who opted out
A federal judge this week rejected Google's motion to throw out a class-action lawsuit alleging that it invaded the privacy of users who opted out of functionality that records a users' web and app activities. A jury trial is scheduled for August 2025 in US District Court in San Francisco.
The lawsuit concerns Google's Web & App Activity (WAA) settings, with the lead plaintiff representing two subclasses of people with Android and non-Android phones who opted out of tracking. "The WAA button is a Google account setting that purports to give users privacy control of Google's data logging of the user's web app and activity, such as a user's searches and activity from other Google services, information associated with the user's activity, and information about the user's location and device," wrote US District Judge Richard Seeborg, the chief judge in the Northern District Of California.
Google says that Web & App Activity "saves your activity on Google sites and apps, including associated info like location, to give you faster searches, better recommendations, and more personalized experiences in Maps, Search, and other Google services." Google also has a supplemental Web App and Activity setting that the judge's ruling refers to as "(s)WAA."
Why solving crosswords is like a phase transition
Most crossword puzzle fans have experienced that moment where, after a period of struggle on a particularly difficult puzzle, everything suddenly starts to come together, and they are able to fill in a bunch of squares correctly. Alexander Hartmann, a statistical physicist at the University of Oldenburg in Germany, had an intriguing insight when this happened while he was trying to solve a puzzle one day. According to his paper published in the journal Physical Review E, the crossword puzzle-solving process resembles a type of phase transition known as percolation—one that seems to be unique compared to standard percolation models.
Traditional mathematical models of percolation date back to the 1940s. Directed percolation is when the flow occurs in a specific direction, akin to how water moves through freshly ground coffee beans, flowing down in the direction of gravity. (In physical systems, percolation is one of the primary mechanisms behind the Brazil nut effect, along with convection.) Such models can also be applicable to a wide range of large networked systems: power grids, financial markets, and social networks, for example.
Individual nodes in a random network start linking together, one by one, via short-range connections, until the number of connections reaches a critical threshold (tipping point). At that point, there is a phase shift in which the largest cluster of nodes grows rapidly, giving rise to more long-range connections, resulting in uber-connectivity. The likelihood of two clusters merging is proportional to their size, and once a large cluster forms, it dominates the networked system, absorbing smaller clusters.
X CEO signals ad boycott is over. External data paints a different picture.
When X CEO Linda Yaccarino took the stage as a keynote speaker at CES 2025, she revealed that "90 percent of the advertisers" who boycotted X over brand safety concerns since Elon Musk's 2022 Twitter acquisition "are back on X."
Yaccarino did not go into any further detail to back up the data point, and X did not immediately respond to Ars' request to comment.
But Yaccarino's statistic seemed to bolster claims that X had made since Donald Trump's re-election that advertisers were flocking back to the platform, with some outlets reporting that brands hoped to win Musk's favor in light of his perceived influence over Trump by increasing spending on X.
Of course Atari’s new handheld includes a trackball, spinner, and numpad
In the wake of the successful Nintendo Switch and Valve Steam Deck, we have seen a wave of PC-based, Android-based, and even FPGA-based handheld gaming systems that can sometimes be hard to tell apart. The upcoming Atari GameStation Go sets itself apart with what we're relatively sure is a first for portable gaming: built-in trackball, spinner, and number pad controls.
Gamers who cut their teeth after 1990 or so might not remember an era when arcade and home console games often relied on controls that went beyond the usual D-pad/joystick and action buttons. But there are plenty of classics from the early days of electronic gaming that just don't feel right unless you have a trackball (Centipede, Missile Command, Crystal Castles), spinner (Arkanoid, Tempest), or number pad (Star Raiders, Intellivision sports games). Many modern retro re-releases try to re-create these kinds of games with more standardized joystick and button controls, but the results can be limited at best and unplayable at worst.
The Atari GameStation Go, on the other hand, seems to be aiming for maximum retro authenticity by packing a whole host of control options into its $150, 7-inch display portable. While a prototype shell for the GameStation Go was briefly shown at the 2024 Consumer Electronics Show a year ago, this year's CES is the official announcement party for a playable version of the GameStation Go.
New $120 16GB Raspberry Pi 5 is for the people who use it like an everyday PC
The Raspberry Pi foundation has spent the last year filling out the Pi 5 lineup—in August, we got a cheaper $50 version with 2GB of RAM, and in December, we got the Pi 500, a Pi-inside-a-keyboard intended specifically for general-purpose desktop use. Today, the Pi 5 board achieves what may be its final form: a version with 16GB of RAM, available for $120.
The 16GB version of the Pi 5 includes the revised "d0" stepping of the Pi 5's BCM2712 processor. For the Pi's purposes, this chip is functionally identical to the original version but uses slightly less power and runs slightly cooler because it cuts out silicon used for features that the Pi 5 didn't take advantage of.
Raspberry Pi CEO Eben Upton writes that the 16GB version of the Pi 5 is possible because of other tweaks made to the d0 stepping of the Pi 5's processor, plus an updated LPDDR4X chip from Micron that could fit eight 16 Gbit RAM dies inside a single package that could fit on the Pi 5's board.