But a new study suggests that the problems with coal-derived pollution go beyond health; it interferes with other power sources. Researchers have found that aerosols, both natural and human-derived, significantly reduce the power we could be getting from solar panels, to the tune of hundreds of terawatts a year. And a lot of those aerosols come from burning coal.

A big impact

The new work, done by a team in the UK, is based on a new global inventory of solar facilities. This started with known inventories of solar facilities, and was supplemented with AI-analyzed satellite imagery and crowdsourced records of locations. Satellite images were then used to determine the size of these facilities, and location-tagged weather data could then be used to estimate their power production.

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AcuRite, which sells devices such as weather stations, indoor thermometers, and rain gauges, began emailing customers last month that they’d soon have to control their devices with the AcuRite Now iOS and Android app. AcuRite first launched the app in June 2025 to control a new weather station, the AcuRite Optimus. However, owners of AcuRite devices had still been able to use the My AcuRite app, which launched in 2016.

Soon, however, My AcuRite will no longer be available, making AcuRite Now the only official app for controlling AcuRite devices. The website for the My AcuRite app currently reads:

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Ars has written about these activities in geosynchronous orbit (GEO) before, but the last few months have seen a couple of interesting developments. First, Russia has now joined the fray with the recent arrival of its own suspected inspector (or attack) satellite in GEO. Second, the US Space Force is poised to order more—perhaps many more—reconnaissance satellites of its own to send into the geosynchronous belt.

GEO is special. The laws of orbital mechanics mean a satellite in this type of orbit, some 22,000 miles (36,000 kilometers) over the equator, moves around the Earth at the same rate as the planet's rotation, causing it to hover over the same location. Commercial and military-owned geosynchronous satellites typically spend years in the same location, or slot, to provide communications services to users.

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So far, the DRC has reported 246 suspected cases and 65 deaths, mainly in the Mongwalu and Rwampara health zones. Although it is now just being reported, the outbreak already ranks around the 10th largest Ebola outbreak to date.

This marks the 17th Ebola outbreak in the DRC since the virus was discovered in 1976. But unlike almost all of the country's past Ebola outbreaks, preliminary laboratory results suggest that the current outbreak is not caused by the Zaire Ebola virus strain. Further genetic sequencing is ongoing today to determine the strain causing the illnesses.

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Now, it appears that a number of scientific fields will be enforcing rules against AI-generated problems even before peer review or journals get involved. One of the people involved in the physics and astronomy preprint server arXiv used a social media thread to announce that any inappropriate AI-produced content submitted to the server will result in a one-year ban and a permanent requirement that future publications undergo peer review before the arXiv will host them.

Thomas Dietterich, in addition to being an emeritus professor at Oregon State University, is heavily involved with arXiv, serving on its editorial advisory council and on its moderation team. So he's in a good position to understand the organization's policies, although we have also reached out to arXiv leadership for confirmation, but have not yet received a response.

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When the deal was announced, Apple likened features linking Siri to ChatGPT to its now-infamous deal embedding Google search in the Safari browser, insiders granted anonymity to discuss the "strained" partnership told Bloomberg. And the promise of that excited OpenAI, which expected the deal "could generate billions of dollars per year in subscriptions," an OpenAI executive granted anonymity to discuss the partnership told Bloomberg.

Instead, OpenAI suspects Apple intentionally failed to promote the integration and fears that the deal may have damaged the ChatGPT brand, sources said.

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While the new EV might be inspired by the original Golf GTI, it's one segment smaller than the current Golf—meet the VW ID. Polo GTI. VW has given some of its ID EVs GTX branding until now, but this is the first to get the GTI badge.

Like the 1976 original, the new car has front-wheel drive, but the ID. Polo GTI's electric motor generates 222 hp (166 kW)—just over twice the output of the 1.6 L engine in the old car. There's a 52 kWh battery pack that provides a WLTP range estimate of 236 miles (424 km), with DC fast charging up to 105 kW with a 10–80 percent charge time of 24 minutes.

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A new paper in Communications Sustainability suggests a route to eliminating direct process emissions by removing a bedrock assumption. What if we don’t have to use limestone cement?

Get out of Portland

The material we call “Portland cement” was developed in the 1800s. It simply requires heating limestone (calcium carbonate) and adding something like clay or coal ash. This gives you the calcium oxide (lime) you’re after but also releases the CO₂ that results when you pull an oxygen atom from carbonate.

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California's Protect Our Games Act, as currently written, would require digital game publishers who cut off support for an online game to either provide a full refund to players or offer an updated version of the game "that enables its continued use independent of services controlled by the operator." The act would also require publishers to notify players 60 days before the cessation of "services necessary for the ordinary use of the digital game."

As currently amended, the act would not apply to completely free games and games offered "solely for the duration of [a] subscription. Any other game offered for sale in California on or after January 1, 2027, would be subject to the law if it passes.

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That's a far cry from just a few years ago, when optimism abounded and a strong commitment to an EV-heavy portfolio translated into a higher share price. As those commitments are abandoned, there's a financial price to pay, including more than $9 billion of write-downs for Honda, which made its first operating loss in the company's history.

Honda's first move was to cancel a trio of EVs it planned to build in Ohio, along with another pair of EVs planned as part of a joint venture with Sony. Yesterday, in Tokyo, Honda CEO Toshihiro Mibe held a press conference to announce the automaker's plan to rebuild its business in the wake of these changes.

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(Its one practical application was in the show Salvation, where it was treated with the same detailed attention to physical laws as Galaxy Quest’s Omega-13.)

With that success, who are we to be skeptical?

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As always, we welcome reader submissions. If you don't want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets, as well as a quick look ahead at the next three launches on the calendar.

An Indian startup nears its first launch. After the Indian government opened a pathway in 2020 for private industry to build and launch its own rockets, one Indian startup is nearing the pad with its first orbital rocket, Ars reports. The most promising Indian launch company, Skyroot Aerospace, says its Vikram-1 launch vehicle could take flight within the next couple of months. And with a recent $60 million fundraising round valuing the firm at $1.1 billion, the company is poised to accelerate its commercial launch efforts.

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A burgeoning hypothesis offers a brow-raising possibility: The shots may be protecting our noggins by training the part of our immune system that had long been considered untrainable. If the idea holds up, it could generate a deeper understanding of fundamental aspects of our immune systems while opening new avenues to treating or preventing dementia. It could also add another dimension to the benefits of vaccines, which already save millions of lives worldwide.

Trained immunity

It's well understood how vaccines work generally; they're designed to prime our immune systems against specific pathogens. Vaccines present either defanged pathogens or distinctive fragments of them to specialized immune cells—namely, T cells and antibody-producing B cells—that can then learn to identify those microbial enemies.

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As about 225 people watched, more than 20 speakers in the two-hour online forum late Wednesday spoke about resistance to an industry they blame for rising electricity prices, heavy water use, noise pollution and rural industrialization. Gov. Josh Shapiro, who has tried to thread the needle of welcoming data centers while proposing some guardrails, was a frequent target.

“This is a public trust and transparency issue,” said Jennifer Dusart, a small business owner and resident of Mechanicsburg, near the state capital. “Too many Americans are finding out about these projects after decisions have been made. We have been bulldozed over, and when citizens have raised concerns, they are often dismissed as uninformed, emotional or anti-progress.”

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So it's been surprising how rarely the commuter bikes I've tested have gotten it right. At the low end of the price scale, as you'd expect, the required compromises have a big impact on the experience. The high end addresses those shortcomings, but at prices comparable to high-end bikes from specialized categories. I've never encountered something in the middle of the two: affordable, with no compromises.

But I may have just found my ideal commuter bike: the Velotric Discover M. It's comfortable, it has a great combination of components, and it comes in at just under $2,500.

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Last week, in a three-level car rental parking garage meticulously converted into an event space in downtown San Francisco, Anthropic put on its second annual Code with Claude developer conference. As previously reported, the single-day event included a keynote introducing new features for Managed Agents and announcing a compute deal with SpaceX.

That compute deal was accompanied by a doubling of usage limits for Claude Code users on the company's Pro and Max plans—a response to a lot of user frustration about a compute crunch, especially in recent weeks.

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But what if that popular gender-based stereotype is wrong? Jeanne Brown, a graduate student at McGill University, has found that vocal fry is actually more common in men than women, detailing her experimental findings in a talk at this week's meeting of the Acoustical Society of America in Philadelphia. Per Brown, we perceive it as more prominent in young women.

Vocal fry is the lowest of the human vocal registers, the others being the modal and falsetto registers, as well as the whistle register. It's caused when the vocal cords slacken, leading to irregular vibration and an audible cracking or rattling sound as air is released in spurts. Vocal fry is characterized by very low fundamental frequencies of around 70 Hz. (The lowest end of the range of human hearing is 20 Hz.)

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The pair come off less as cybercriminal masterminds than as galumphing galoots—that is to say, a pair of bumbling oafs who thought that asking AI how to cover their tracks was going to keep them out of federal prison.

One of the minor mysteries I encountered while writing the piece was that the government had a verbatim transcript of everything the brothers said to each other during their hour-long deletion spree. The two men lived together in Arlington, Virginia, so it made sense that they might be chatting in the same room rather than by text or instant message. But how the heck had the government gotten access to the audio? Supersecret software bugging? Crazy corporate spyware running on their company laptops? FBI agent in the bushes with a microphone?

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But it was Richins' less innocuous online searches that helped a jury find her guilty of murdering her husband Eric via fentanyl overdose—and of hoping to collect life insurance policies she had opened in his name but without his knowledge.

Richins was yesterday sentenced to life in prison without parole; her Internet history played a key role in the trial. A few weeks after Utah police began their investigation into Eric's March 2022 death, they seized Kouri's iPhone. Comparisons with records from her cell phone provider suggested that numerous text messages around the time of Eric's death had been deleted from the device. In addition, cell phone tower pings helped establish where Kouri had been in the days before Eric's death, which were a key piece of evidence in the state's case against her.

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Lake Tahoe’s local electricity provider, California-based Liberty Utilities, has been obtaining 75 percent of its power from the Nevada-based company NV Energy. But the latter has said it will stop providing power to the Lake Tahoe region by May 2027, according to extensive reporting by Fortune.

Nevada's fast-growing data center development is one of the main reasons given by NV Energy for ending its energy supply agreement with Liberty, according to a Liberty filing with California regulators. Fortune highlighted data from NV Energy’s own planning documents showing that a dozen data center projects in northern Nevada could drive 5,900 megawatts of new demand by 2033.

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