Ars Technica

Federal health policies and decisions are quickly becoming less transparent under Health Secretary Robert F. Kennedy Jr.—despite him telling Health Department employees just last month that he would work with them to "launch a new era of radical transparency."

Since then, Kennedy has axed a public meeting on vaccines—leaving lingering questions about the future of those transparent proceedings. He has also revoked a broad transparency policy for the Department of Health and Human Services (HHS) that required public notice for certain new rules and a comment period to allow for the public to be involved with the rulemaking process. Revoking the policy could have sweeping effects. For instance, HHS could now change Medicaid requirements with no notice or change federal research grants without input from the research community—something the Trump administration has already tried to do before it was put on hold by a federal judge.

Rolling back public participation

On Monday, Kennedy published the new policy in the Federal Register, which specifically revoked a transparency rule adopted by the Department of Health and Human Services (HHS) in 1971. The rule—called the Richardson Waiver, after then-Health Secretary Elliot Richardson—required HHS to have public notice-and-comment periods for proposed rules and policies regarding certain matters, namely public property, loans, grants, benefits, or contracts. These five categories would otherwise have been exempt from public notice-and-comment requirements under the Administrative Procedure Act (APA). The APA also says that public notice-and-comment periods can be waived for "good cause."

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Early on Monday morning, a bank of Tesla Superchargers went up in flames in Littleton, Massachusetts. While the cause of the fire is unknown, Tesla's Superchargers are not known for bursting into flames, and a $5,000 reward is being offered by the authorities, who believe the fire was "intentionally set." Assuming that arson is to blame, this may well be one more attack against a brand that's becoming more and more toxic.

Elon Musk's involvement with US President Donald Trump has changed the nature of the spotlight on the Tesla CEO. Instead of cute cameos in Marvel movies and being name-checked by Star Trek, Musk now makes headlines for boosting far-right politics in Europe and suggesting cuts to Social Security. This has made him some new friends, but it has lost many more in the process. And the consequences for Tesla's core business—selling electric cars—have been disastrous.

2024 was already a not-good year for the automaker. A decade ago, it was basically the only game in town if you wanted an electric car that could go more than 200 miles between charges, and celebrities and tastemakers flocked to the brand in droves. Now, customers are spoiled for choice, and Tesla's model range—effectively just two cars—has to compete against all the established OEMs that are increasingly working out how to build great EVs, plus all those Chinese startups that appear to have cracked that market in terms of what customers want and how to make it cheap.

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In the past decade, Americans have become increasingly aware that climate change is harming the health of people in the US, according to a new survey.

The survey, which was conducted in December and released Friday, also shows increased trust in physicians, climate scientists, federal agencies like the Centers for Disease Control and Prevention and the Environmental Protection Agency, local public health departments and the World Health Organization for providing information about the health harms of global warming.

These sources of information are under threat: President Donald Trump’s administration has proposed cutting most of the EPA’s budget and initiated mass firings at the CDC, taken down climate and health information from government websites, frozen or revoked funding for some climate research and interventions, stalled environmental justice initiatives, and proposed rescinding a 16-year-old federal finding that mandates government action on greenhouse gases. Trump also withdrew the US from the World Health Organization and the Paris climate accord.

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"4090 performance at $549."

That’s what Nvidia CEO Jensen Huang said of the GeForce RTX 5070 when he announced the card at CES in January. Thanks to AI, this new midrange GPU would be able to match the frame rates of what had been the fastest consumer GPU that had previously existed for around one-third the price.

Let's dispel that notion up front. No, the GeForce RTX 5070 is not as fast as an RTX 4090, not without some very creative comparing of non-comparable numbers. Per usual for the 50-series, Nvidia is leaning on its AI-generated interpolated frames for the bulk of its claimed performance improvements. In terms of actual rendering speed, the 5070 isn’t even as fast as a 4080 or a 4070 Ti. It’s barely faster than last year’s 4070 Super, and it has disproportionately higher power usage.

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Since the launch of ChatGPT in late 2022, experts have debated how widely AI language models would impact the world. A few years later, the picture is getting clear. According to new Stanford University-led research examining over 300 million text samples across multiple sectors, AI language models now assist in writing up to a quarter of professional communications. It's having a large impact, especially in less-educated parts of the United States.

"Our study shows the emergence of a new reality in which firms, consumers and even international organizations substantially rely on generative AI for communications," wrote the researchers.

The researchers tracked large language model (LLM) adoption across industries from January 2022 to September 2024 using a dataset that included 687,241 consumer complaints submitted to the US Consumer Financial Protection Bureau (CFPB), 537,413 corporate press releases, 304.3 million job postings, and 15,919 United Nations press releases.

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Striking a four-year deal with President Donald Trump, the Taiwan Semiconductor Manufacturing Co. (TSMC) plans to invest $100 billion in chip manufacturing plants in the US, sources told The Wall Street Journal.

According to "people familiar with the matter," Trump will officially announce the deal later today. While still unconfirmed, TSMC's supposed investment comes after OpenAI and Apple announced similarly vague plans to each invest $500 billion into the US in apparent efforts to get on Trump's good side. It's hard to tell if these plans are actually new or if companies had already planned to invest heavily without outside pressure, WSJ noted.

It's undeniable that expanding TSMC's US presence has long been a goal for the US. TSMC announced its first fab in 2020, initially committing $12 billion over 10 years. Since then, TSMC's investments over time have expanded, reaching $40 billion by 2022. Last year, its investments notched up again when TSMC was awarded $6.6 billion in direct funding under the CHIPS Act to "support the company’s planned investment of more than $65 billion in three greenfield leading-edge fabs in Phoenix, Arizona," the Commerce Department press release said. At that time, Joe Biden had promised those fabs would "manufacture the most advanced chips in the world," putting the US "on track to produce 20 percent of the world’s leading-edge semiconductors by 2030."

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Millie Bobby Brown and Chris Pratt star in the Netflix original film The Electric State.

Anthony and Joe Russo have their hands full these days with the Marvel films Avengers: Doomsday and Avengers: Secret War, slated for 2026 and 2027 releases, respectively. But we'll get a chance to see another, smaller film from the directors this month on Netflix: The Electric State, adapted from the graphic novel by Swedish artist/designer Simon Stålenhag.

Stålenhag's stunningly surreal neofuturistic art—featured in his narrative art books, 2014's Tales from the Loop and 2016's Things From the Flood—inspired the 2020 eight-episode series Tales From the Loop, in which residents of a rural town find themselves grappling with strange occurrences thanks to the presence of an underground particle accelerator. That adaptation captured the mood and tone of the art that inspired it and received Emmy nominations for cinematography and special visual effects.

The Electric State was Stålenhag's third such book, published in 2018 and set in a similar dystopian, ravaged landscape. Paragraphs of text, accompanied by larger artworks, tell the story of a teen girl named Michelle who must travel across the country with her robot companion to find her long-lost brother, while being pursued by a federal agent. The Russo brothers acquired the rights early on and initially intended to make the film with Universal, but when the studio decided it would not be giving the film a theatrical release, Netflix bought the distribution rights.

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Zach Barth, the namesake of game studio Zachtronics, tends to make a certain kind of game.

Besides crafting the free browser game Infiniminer, which inspired the entire global Minecraft industry, Barth and his collaborators made SpaceChem, Infinifactory, TIS-100, Shenzen I/O, Opus Magnum, and Exapunks. Each one of them is some combination of puzzle game, light capitalism horror, and the most memorable introductory-level computer science, chemistry, or logistics class into which you unwittingly enrolled. Each game is its own thing, but they have a certain similar brain feel between them. It is summed up perhaps best by the Zachtronics team itself in a book: Zach-Like.

Barth and his crew have made other kinds of games, including a forward-looking visual novel about AI, Eliza, and multiplayer card battler Nerts!. And Barth himself told PC Gamer that he hates "saying Zach-like." But fans of refining inputs, ordering operations, and working their way past constraints will thrill to learn that Zach is, in fact, back.

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Watching Genesis' cars evolve and mature over the years has been interesting. Originally part of Hyundai's lineup, Genesis stood up as a brand in its own right at the end of 2015. Those early Hyundai-badged Genesises (Geneses?) were impressive considering the H on the nose, the dealerships they were found in, and the price out the door. The soft bigotry of low expectations, perhaps.

As Genesis has become its own thing, its vehicles no longer get that kind of benefit of the doubt. They have to stand against competitors from established luxury brands, the old-timers from Europe and now-middle-aged Japanese competitors. Recruiting the people associated with many of Bentley and Audi's more memorable designs was a good move in that regard.

This GV80 Coupe's design proved to be a hit with neighbors and the general public—few cars we've tested in the past couple of years have garnered as many compliments. The coupe was a relatively recent addition to the normal GV80 SUV, sacrificing a little volume at the back for a rakish ducktail rear end. All four corners are wrapped in what's now Genesis' light signature, a pair of thin horizontal stripes with microlens arrays supplying the brightness at the front.

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At Mobile World Congress, Google confirmed that a long-awaited Gemini AI feature it first teased nearly a year ago is ready for launch. The company's conversational Gemini Live will soon be able to view live video and screen sharing, a feature Google previously demoed as Project Astra. When Gemini's video capabilities arrive, you'll be able to simply show the robot something instead of telling it.

Right now, Google's multimodal AI can process text, images, and various kinds of documents. However, its ability to accept video as an input is spotty at best—sometimes it can summarize a YouTube video, and sometimes it can't, for unknown reasons. Later in March, the Gemini app on Android will get a major update to its video functionality. You'll be able to open your camera to provide Gemini Live a video stream or share your screen as a live video, thus allowing you to pepper Gemini with questions about what it sees.

Gemini Live with video.

It can be hard to keep track of which Google AI project is which—the 2024 Google I/O was largely a celebration of all things Gemini AI. The Astra demo made waves as it demonstrated a more natural way to interact with the AI. In the original video, which you can see below, Google showed how Gemini Live could answer questions in real time as the user swept a phone around a room. It had things to say about code on a computer screen, how speakers work, and a network diagram on a whiteboard. It even remembered where the user left their glasses from an earlier part of the video.

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Burning droplets bounce back. Credit: Zulu et al., 2025 Burning droplets bounce back. Credit: Zulu et al., 2025

Droplets bouncing off surfaces are an everyday phenomenon, like raindrops bouncing off lotus leaves or water drops sizzling in a hot pan, levitating and sliding around—aka the Leidenfrost effect. There is also an inverse Leidenfrost effect, first described in 1969, that involves a hot object such as a droplet levitating above a cold surface. Understanding the mechanisms behind these phenomena is crucial to a broad range of practical applications, such as self-cleaning, anti-icing, anti-fogging, surface charge printing, or droplet-based logic systems.

Droplets usually only bounce if the surface is superheated or engineered in some way to reduce stickiness. Physicists from the City University of Hong Kong have figured out how to achieve this bouncing behavior of hot oil droplets off almost any surface, according to a new paper published in the journal Newton.

As we've reported previously, in 1756, a German scientist named Johann Gottlob Leidenfrost reported his observation of the unusual phenomenon. Normally, he noted, water splashed onto a very hot pan sizzles and evaporates very quickly. But if the pan's temperature is well above water's boiling point, "gleaming drops resembling quicksilver" will form and skitter across the surface. It's called the "Leidenfrost effect" in his honor.

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The idea of flying satellites in "very" low-Earth orbit is not new. Dating back to the dawn of the space age in the late 1950s, the first US spy satellites, as part of the Corona program, orbited the planet as low as 120 to 160 km (75 to 100 miles) above the Earth.

This low vantage point allowed the Kodak cameras on board the Corona satellites to capture the highest-resolution images of Earth during the height of the Cold War. However, flying so close to the planet brought a number of challenges, most notably that of atmospheric drag.

For much of the space age, therefore, satellites have flown much higher orbits. Most satellites today fly at an altitude of between 400 and 800 km (250 and 500 miles), which is high enough to avoid the vast majority of atmospheric drag while still being close enough to offer good communications and a clear view of the planet.

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Apple's slow trickle of early 2025 product announcements is apparently set to continue this week, following the introduction of the iPhone 16e a couple of weeks ago. According to Bloomberg's Mark Gurman, the company plans to refresh its 13- and 15-inch MacBook Air laptops "as early as this coming week," adding the M4 processor that Apple put in the iMac, Mac mini, and MacBook Pro lineups last fall.

An M4 refresh for the MacBook Air was always likely, but Apple has kept us guessing about the timing. Usually, the MacBook Airs are among the first devices to get new M-series processors from Apple, but Apple surprised us by bringing the M4 to the iPad Pro just a few months after introducing the M3. In mid-December, concrete references to the M4 MacBook Air appeared in the macOS 15.2 update, suggesting that the laptops were in testing, even if they weren't ready for a public launch yet.

The laptops are unlikely to look too different from the current M2 or M3 MacBook Airs, which got an "update" of sorts last fall when Apple discontinued the versions with 8GB of RAM in favor of 16GB versions that kept the same prices.

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