Linux

'I Tried Running Linux On an Apple Silicon Mac and Regretted It' (msn.com) 157

Installing Linux on a MacBook Air "turned out to be a very underwhelming experience," according to the tech news site MakeUseOf: The thing about Apple silicon Macs is that it's not as simple as downloading an AArch64 ISO of your favorite distro and installing it. Yes, the M-series chips are ARM-based, but that doesn't automatically make the whole system compatible in the same way most traditional x86 PCs are. Pretty much everything in modern MacBooks is custom. The boot process isn't standard UEFI like on most PCs. Apple has its own boot chain called iBoot. The same goes for other things, like the GPU, power management, USB controllers, and pretty much every other hardware component. It is as proprietary as it gets.

This is exactly what the team behind Asahi Linux has been working toward. Their entire goal has been to make Linux properly usable on M-series Macs by building the missing pieces from the ground up. I first tried it back in 2023, when the project was still tied to Arch Linux and decided to give it a try again in 2026. These days, though, the main release is called Fedora Asahi Remix, which, as the name suggests, is built on Fedora rather than Arch...

For Linux on Apple Silicon, the article lists three major disappointments:
  • "External monitors don't work unless your MacBook has a built-in HDMI port."
  • "Linux just doesn't feel fully ready for ARM yet. A lot of applications still aren't compiled for ARM, so software support ends up being very hit or miss." (And even most of the apps tested with FEX "either didn't run properly or weren't stable enough to rely on.")
  • Asahi "refused to connect to my phone's hotspot," they write (adding "No, it wasn't an iPhone").

Earth

Earth is Warming Faster Than Ever. But Why? (msn.com) 114

"Global temperatures have been rising for decades," reports the Washington Post. "But many scientists say it's now happening faster than ever before." According to a Washington Post analysis, the fastest warming rate on record occurred in the last 30 years. The Post used a dataset from NASA to analyze global average surface temperatures from 1880 to 2025. "We're not continuing on the same path we had before," said Robert Rohde, chief scientist at Berkeley Earth. "Something has changed...." Temperatures over the past decade have increased by close to 0.27 degrees C per decade — about a 42 percent increase...

For decades, a portion of the warming unleashed by greenhouse gas emissions was "masked" by sulfate aerosols. These tiny particles cause heart and lung disease when people inhale polluted air, but they also deflect the sun's rays. Over the entire planet, those aerosols can create a significant cooling effect — scientists estimate that they have canceled out about half a degree Celsius of warming so far. But beginning about two decades ago, countries began cracking down on aerosol pollution, particularly sulfate aerosols. Countries also began shifting from coal and oil to wind and solar power. As a result, global sulfur dioxide emissions have fallen about 40 percent since the mid-2000s; China's emissions have fallen even more. That effect has been compounded in recent years by a new international regulation that slashed sulfur emissions from ships by about 85 percent.

That explains part of why warming has kicked up a bit. But some researchers say that the last few years of record heat can't be explained by aerosols and natural variability alone. In a paper published in the journal Science in late 2024, researchers argued that about 0.2 degrees C of 2023's record heat — or about 13 percent — couldn't be explained by aerosols and other factors. Instead, they found that the planet's low-lying cloud cover had decreased — and because low-lying clouds tend to reflect the sun's rays, that decrease warmed the planet... That shift in cloud cover could also be partly related to aerosols, since clouds tend to form around particles in the atmosphere. But some researchers also say it could be a feedback loop from warming temperatures. If temperatures warm, it can be harder for low-lying clouds to form.

If most of the current record warmth is due to changing amounts of aerosol pollution, the acceleration would stop once aerosol pollutants reach zero — and the planet would return to its previous, slower rate of warming. But if it's due to a cloud feedback loop, the acceleration is likely to continue — and bring with it worsening heat waves, storms and droughts.

"Scientists thought they understood global warming," reads the Post's original headline. "Then the past three years happened."

Just last month Nuuk, Greenland saw temperatures over 20 degrees Fahrenheit above average, their article points out. And "Parts of Australia, meanwhile, have seen temperatures push past 120 degrees Fahrenheit amid a record heat wave..."
AI

Anthropic To Cover Costs of Electricity Price Increases From Its Data Centers (nbcnews.com) 37

AI startup Anthropic says it will ensure consumer electricity costs remain steady as it expands its data center footprint. From a report: Anthropic said it would work with utility companies to "estimate and cover" consumer electricity price increases in places where it is not able to sufficiently generate new power and pay for 100% of the infrastructure upgrades required to connect its data centers to the electrical grid.

In a statement to NBC News, Anthropic CEO Dario Amodei said: "building AI responsibly can't stop at the technology -- it has to extend to the infrastructure behind it. We've been clear that the U.S. needs to build AI infrastructure at scale to stay competitive, but the costs of powering our models should fall on Anthropic, not everyday Americans. We look forward to working with communities, local governments, and the Administration to get this right."

Facebook

Meta Auditor EY Raised Red Flag on Data-Center Accounting (wsj.com) 31

Meta Platforms' latest annual report contained an unusual, cautionary note for investors. From a report: The tech giant's auditor, Ernst & Young, raised a red flag over the financial engineering Meta used to keep a $27 billion data-center project off its balance sheet. While EY ultimately blessed Meta's accounting treatment, the firm flagged it as a "critical audit matter." This means it was one of the hardest, riskiest judgments the auditor had to make.

Such a warning label is rare for a specific, high-profile transaction at a major audit client. Meta moved the data-center project, called Hyperion, off its books in October into a new joint venture with Blue Owl Capital. Meta owns 20% of the venture; funds managed by Blue Owl own the other 80%. A holding company called Beignet Investor, which owns the Blue Owl portion, sold a then-record $27.3 billion of bonds to investors. The joint venture is known in accounting parlance as a variable interest entity, or VIE. Meta said it isn't the "primary beneficiary" of this entity and so didn't have to put the venture's assets and liabilities on its own balance sheet.

Meta's assertion that it lacks power over the venture is debatable and has drawn scrutiny from investors and lawmakers. Meta is a hyperscaler and knows how to run data centers for artificial intelligence, while Blue Owl is a financier. Whether the venture succeeds economically will come down to Meta's decisions and know-how. In its report, EY said auditing Meta's decision "was especially challenging due to the significant judgment required in determining the activities that most significantly affect the VIE's economic performance."

China

Why Is China Building So Many Coal Plants Despite Its Solar and Wind Boom? (apnews.com) 71

Long-time Slashdot reader schwit1 shared this article from the Associated Press: Even as China's expansion of solar and wind power raced ahead in 2025, the Asian giant opened many more coal power plants than it had in recent years — raising concern about whether the world's largest emitter will reduce carbon emissions enough to limit climate change.

More than 50 large coal units — individual boiler and turbine sets with generating capacity of 1 gigawatt or more — were commissioned in 2025, up from fewer than 20 a year over the previous decade, a research report released Tuesday said. Depending on energy use, 1 gigawatt can power from several hundred thousand to more than 2 million homes. Overall, China brought 78 gigawatts of new coal power capacity online, a sharp uptick from previous years, according to the joint report by the Centre for Research on Energy and Clean Air, which studies air pollution and its impacts, and Global Energy Monitor, which develops databases tracking energy trends. "The scale of the buildout is staggering," said report co-author Christine Shearer of Global Energy Monitor. "In 2025 alone, China commissioned more coal power capacity than India did over the entire past decade."

At the same time, even larger additions of wind and solar capacity nudged down the share of coal in total power generation last year. Power from coal fell about 1% as growth in cleaner energy sources covered all the increase in electricity demand last year. China added 315 gigawatts of solar capacity and 119 gigawatts of wind in 2025, according to statistics from the government's National Energy Administration...

The government position is that coal provides a stable backup to sources such as wind and solar, which are affected by weather and the time of day. The shortages in 2022 resulted partly from a drought that hit hydropower, a major energy source in western China... The risk of building so much coal-fired capacity is it could delay the transition to cleaner energy sources [said Qi Qin, an analyst at the Centre for Research on Energy and Clean Air and another co-author of the report]... Political and financial pressure may keep plants operating, leaving less room for other sources of power, she said. The report urged China to accelerate retirement of aging and inefficient coal plants and commit in its next five-year plan, which will be approved in March, to ensuring that power-sector emissions do not increase between 2025 and 2030.

Medicine

Have We Been Thinking About Exercise Wrong for Half a Century? (msn.com) 172

"After a half-century asking us to exercise more, doctors and physiologists say we have been thinking about it wrong," writes Washington Post columnist Michael J. Coren.

"U.S. and World Health Organization guidelines no longer specify a minimum duration of moderate or vigorous aerobic activity." Movement-tracking studies show even tiny, regular bursts of effort — as short as 30 seconds — can capture many of the health benefits of the gym. Climbing two to three flights of stairs a few times per day could change your life. Experts call it VILPA, or vigorous intermittent lifestyle physical activity. "The message now is that all activity counts," said Martin Gibala, a professor and former chair of the kinesiology department at McMaster University in Canada... Just taking the stairs daily is associated with lower body weight and cutting the risk of stroke and heart disease — the leading (and largely preventable) cause of death globally. While it may not burn many calories (most exercise doesn't), it does appear to extend your health span. Leg power — a measure of explosive muscle strength — was a stronger predictor of brain aging than any lifestyle factors measured in a 2015 study in the journal Gerontology...

How little activity can you do? Four minutes daily. Essentially, a few flights of stairs at a vigorous pace. That's the effort [Emmanuel Stamatakis, a professor of physical activity and population health at the University of Sydney] found delivered significant health benefits in that 2022 study of British non-exercisers. "We saw benefits from the first minute," Stamatakis said. For Americans, the effect is even more dramatic: a 44 percent drop in deaths, according to a peer-reviewed paper recently accepted for publication. "We showed for the first time that vigorous intensity, even if it's done as part of the day-to-day routine, not in a planned and structured manner, works miracles," Stamatakis said. "The key principle here is start with one, two minutes a day. The focus should be on making sure that it's something that you can incorporate into your daily routine. Then you can start thinking about increasing the dose."

Intensity is the most important factor. You won't break a sweat in a brief burst, but you do need to feel it. A highly conditioned athlete might need to sprint to reach vigorous territory. But many people need only to take the stairs. Use your breathing as a guide, Stamatakis said: If you can sing, it's light intensity. If you can speak but not sing, you're entering moderate exertion. If you can't hold a conversation, it's vigorous. The biggest benefits come from moderate to vigorous movement. One minute of incidental vigorous activity prevents premature deaths, heart attacks or strokes as well as about three minutes of moderate activity or 35 to 49 minutes of light activity.

Power

Are Big Tech's Nuclear Construction Deals a Tipping Point for Small Modular Reactors? (aol.com) 71

Fortune reports on "a watershed moment" in American's nuclear power industry: In January, Meta partnered with Gates' TerraPower and Sam Altman-backed Oklo to develop about 4 gigawatts of combined SMR projects — enough to power almost 3 million homes — for "clean, reliable energy" both for Meta's planned Prometheus AI mega campus in Ohio and beyond. Analysts see Meta as the start of more Big Tech nuclear construction deals — not just agreements with existing plants or restarts such as the now-Microsoft-backed Three Mile Island. "That was the first shot across the bow," said Dan Ives, head of tech research for Wedbush Securities, of the Meta deals. "I would be shocked if every Big Tech company doesn't make some play on nuclear in 2026, whether a strategic partnership or acquisitions."

Ives pointed out there are more data centers under construction than there are active data centers in the U.S. "I believe clean energy around nuclear is going to be the answer," he said. "I think 2030 is the key threshold to hit some sort of scale and begin the next nuclear era in the United States." Smaller SMR reactors can be built in as little as three years instead of the decade required for traditional large reactors. And they can be expanded, one or two modular reactors at a time, to meet increasingly greater energy demand from 'hyperscalers,' the companies that build and operate data centers. "There's major risk if nuclear doesn't happen," Oklo chairman and CEO Jacob DeWitte told Fortune, citing the need for emission-free power and consistent baseload electricity to meet skyrocketing demand. "The hyperscalers, as the ultimate consumers of power are, are looking at the space and seeing that the market is real. They can play a major role in helping make that happen," DeWitte said, speaking in his fast-talking, Silicon Valley startup mode.

Transportation

The World's First Sodium-Ion Battery in Commercial EVs - Great at Low Temperatures (insideevs.com) 84

Long-time Slashdot reader Geoffrey.landis shared this report from InsideEVs: Chinese battery giant CATL and automaker Changan Automobile are preparing to put the world's first passenger car powered by sodium-ion batteries on public roads by mid-2026. And if the launch is successful, it could usher in an era where electric vehicles present less of a fire risk and can better handle extreme temperatures.

The CATL Naxtra sodium-ion battery will debut in the Changan Nevo A06 sedan, delivering an estimated range of around 400 kilometers (249 miles) on the China Light-Duty Test Cycle. From there, the battery will roll out across Changan's broader portfolio, including EVs from Avatr, Deepal, Qiyuan and Uni, the company said. "The launch represents a major step in the industry's transition toward a dual-chemistry ecosystem, where sodium-ion and lithium-ion batteries complement each other to meet diverse customer needs," CATL said in a press release...

It delivers 175 watt-hours per kilogram of energy density, which is lower than nickel-rich chemistries but roughly on par with lithium ion phosphate batteries... Where the Naxtra battery really stands out, however, is cold-weather performance. CATL says its discharge power at -30 degrees Celsius (-22 degrees Fahrenheit) is three times higher than that of lithium ion phosphate batteries.

Power

Free Bi-Directional EV Chargers Tested to Improve Massachusetts Power Grid (masscec.com) 59

Somewhere on America's eastern coast, there's an economic development agency in Massachusetts promoting green energy solutions. And Monday the Massachusetts Clean Energy Center (or MassCEC) announced "a first-of-its-kind" program to see what happens when they provide free electric vehicle chargers to selected residents, school districts, and municipal projects.

The catch? The EV chargers are bi-directional, able "to both draw power from and return power to the grid..." The program hopes to "accelerate the adoption of V2X technologies, which, at scale, can lower energy bills by reducing energy demand during expensive peak periods and limiting the need for new grid infrastructure." This functionality enables EVs, including electric buses and trucks, to provide backup power during outages and alleviate pressure on the grid during peak energy demand. These bi-directional chargers will enable EVs to act as mobile energy storage assets, with the program expected to deliver over one megawatt of power back to the grid during a demand response event — enough to offset the electricity use of 300 average American homes for an hour. "Virtual Power Plants are the future of our electrical grid, and I couldn't be more excited to see this program take off," said Energy and Environmental Affairs Secretary Rebecca Tepper. "We're putting the power of innovation directly in the hands of Massachusetts residents. Bi-directional charging unlocks new ways to protect communities from outages and lower costs for families and public fleets...."

Additionally, the program will help participants enroll in existing utility programs that offer compensation to EV owners who supply power back to the grid during peak times, helping participants further lower their electricity costs. By leveraging distributed energy resources and reducing grid strain, this program positions Massachusetts as a national leader in clean energy innovation.

Space

Musk Predicts SpaceX Will Launch More AI Compute Per Year Than the Cumulative Total on Earth (substack.com) 245

Elon Musk told podcast host Dwarkesh Patel and Stripe co-founder John Collison that space will become the most economically compelling location for AI data centers in less than 36 months, a prediction rooted not in some exotic technical breakthrough but in the basic math of electricity supply: chip output is growing exponentially, and electrical output outside China is essentially flat.

Solar panels in orbit generate roughly five times the power they do on the ground because there is no day-night cycle, no cloud cover, no atmospheric loss, and no atmosphere-related energy reduction. The system economics are even more favorable because space-based operations eliminate the need for batteries entirely, making the effective cost roughly 10 times cheaper than terrestrial solar, Musk said. The terrestrial bottleneck is already real.

Musk said powering 330,000 Nvidia GB300 chips -- once you account for networking hardware, storage, peak cooling on the hottest day of the year, and reserve margin for generator servicing -- requires roughly a gigawatt at the generation level. Gas turbines are sold out through 2030, and the limiting factor is the casting of turbine vanes and blades, a process handled by just three companies worldwide.

Five years from now, Musk predicted, SpaceX will launch and operate more AI compute annually than the cumulative total on Earth, expecting at least a few hundred gigawatts per year in space. Patel estimated that 100 gigawatts alone would require on the order of 10,000 Starship launches per year, a figure Musk affirmed. SpaceX is gearing up for 10,000 launches a year, Musk said, and possibly 20,000 to 30,000.
China

Hidden Car Door Handles Are Officially Being Banned In China (caranddriver.com) 181

sinij writes:

Automakers have increasingly implemented door handles that retract into the bodywork for aerodynamic reasons, but they are now off limits in China.

My issue is with electronic-only door latch mechanism. It should be possible to open the door from both inside and outside the car in case of complete power loss.


Communications

High-Speed Internet Boom Hits Low-Tech Snag: a Labor Shortage (msn.com) 94

The U.S. laid fiber-optic cables to a record number of homes last year as billions of dollars in federal broadband grants and a surge in data-center construction fueled an enormous buildout, but the industry does not have enough workers to sustain the pace.

A 2024 report by the Fiber Broadband Association and the Power & Communication Contractors Association projects 58,000 new fiber jobs between 2025 and 2032 and estimates 120,000 workers will leave the field in that period, mostly through retirement -- a combined shortage of 178,000. The gap is especially acute among splicers, who fuse hair-thin filaments by hand, and directional drill operators.

Telecommunications line installers and repairers earned annual median wages of $70,500 for the year ended May 2024, according to the Bureau of Labor Statistics, against a $49,500 national median. Push, a utility-construction firm, raised hourly pay for fiber crews by 5% to 8% in each of the past several years and expects the pace to quicken.
Power

Fourth US Wind Farm Project Blocked By Trump Allowed to Resume Construction (thehill.com) 115

Vineyard Wind (powering Massachusetts) is one of five offshore wind projects "that the Trump administration tried to hold up in December," reports The Hill.

This week it became the fourth of those wind projects allowed by a judge to resume construction, the article notes, while even the fifth project "is still awaiting court proceedings." Federal Judge Brian Murphy, a Biden appointee, issued a preliminary injunction blocking the administration's stop work order against Vineyard Wind... According to its website, when complete, Vineyard Wind would be able generate enough power for 400,000 homes and businesses. The project already has 44 operational wind turbines and was working on an additional 18. The Trump pause applied to the construction work that was not yet complete.
Robotics

Scientists Create Programmable, Autonomous Robots Smaller Than a Grain of Salt (upenn.edu) 46

Researchers at the University of Pennsylvania and University of Michigan "have created the world's smallest fully programmable, autonomous robots," according to a recent announcement.

The announcement calls them "microscopic swimming machines that can independently sense and respond to their surroundings, operate for months and cost just a penny each." Barely visible to the naked eye, each robot measures about 200 by 300 by 50 micrometers, smaller than a grain of salt. Operating at the scale of many biological microorganisms, the robots could advance medicine by monitoring the health of individual cells and manufacturing by helping construct microscale devices. Powered by light, the robots carry microscopic computers and can be programmed to move in complex patterns, sense local temperatures and adjust their paths accordingly... "We've made autonomous robots 10,000 times smaller," says Marc Miskin, Assistant Professor in Electrical and Systems Engineering at Penn Engineering and the papers' senior author. "That opens up an entirely new scale for programmable robots."
The announcement describes them as "the first truly autonomous, programmable robots at this scale" (as described in two recent academic articles). The team had to design a new propulsion system that utilized the unique locomotion physics in the microscopic realm, according to the university's announcement. So the robots "generate an electrical field that nudges ions in the surrounding solution." Those ions, in turn, push on nearby water molecules, animating the water around the robot's body. "It's as if the robot is in a moving river," says Miskin, "but the robot is also causing the river to move." The robots can adjust the electrical field that causes the effect, allowing them to move in complex patterns and even travel in coordinated groups, much like a school of fish, at speeds of up to one body length per second...

To be truly autonomous, a robot needs a computer to make decisions, electronics to sense its surroundings and control its propulsion, and tiny solar panels to power everything, and all that needs to fit on a chip that is a fraction of a millimeter in size. This is where David Blaauw's team at the University of Michigan came into action... The robots are programmed by pulses of light that also power them. Each robot has a unique address that allows the researchers to load different programs on each robot. "This opens up a host of possibilities," adds Blaauw, "with each robot potentially performing a different role in a larger, joint task."

Thanks to long-time Slashdot reader fahrbot-bot for sharing the news.
Power

99% of New US Energy Capacity Will Be Green in 2026 (electrek.co) 71

This year in America, renewables and battery storage "will account for 99.2% of net new capacity — and even higher if small-scale solar were included," reports Electrek, citing EIA data reviewed by the SUN DAY Campaign: EIA's latest monthly "Electric Power Monthly" report (with data through November 30, 2025), once again confirms that solar is the fastest-growing among the major sources of US electricity... [U]tility-scale solar thermal and photovoltaic expanded by 34.5% while that from small-scale systems rose by 11.3% during the first 11 months of 2025 compared to the same period in 2024. The combination of utility-scale and small-scale solar increased by 28.1% and produced a bit under 9.0% (utility-scale: 6.74%; small-scale: 2.13%) of total US electrical generation for January to November, up from 7.1% a year earlier.

Wind turbines across the US produced 10.1% of US electricity in the first 11 months of 2025 — an increase of 1.2% compared to the same period in 2024. In November alone, wind-generated electricity was 2.0% greater than a year earlier... The mix of all renewables (wind, solar, hydropower, biomass, and geothermal) produced 8.7% more electricity in January-November than a year earlier and accounted for 25.7% of total US electricity production, up from 24.3% 12 months earlier. Renewables' share of electrical generation is now second to only that of natural gas, whose electrical output actually dropped by 3.7% during the first 11 months of 2025...

Since January 1 to November 30, roughly the beginning of the Trump administration, renewable energy capacity, including battery storage, small-scale solar, hydropower, geothermal, and biomass, ballooned by 45,198.1 MW, while all fossil fuels and nuclear power combined declined by 519.2 MW...

[In 2026] natural gas capacity will increase by only 3,960.7 MW, which will be almost completely offset by a decrease of 3,387.0 MW in coal capacity.

Businesses

Nvidia CEO Denies OpenAI's $100B Investment from Nvidia is 'Stalled' (msn.com) 19

Saturday Nvidia CEO Jensen Huang said they still planned a "huge" investment in OpenAI, according to CNBC.

Friday the Wall Street Journal had reported that Nvidia's plan to invest up to $100 billion in OpenAI "has stalled after some inside the chip giant expressed doubts about the deal, people familiar with the matter said..." [T]he talks haven't progressed beyond the early stages, some of the people said. Now, the two sides are rethinking the future of their partnership, some of the people said. The latest discussions, they said, include an equity investment of tens of billions of dollars as part of OpenAI's current funding round. Nvidia CEO Jensen Huang has privately emphasized to industry associates in recent months that the original $100 billion agreement was nonbinding and not finalized, people familiar with the matter said. He has also privately criticized what he has described as a lack of discipline in OpenAI's business approach and expressed concern about the competition it faces from the likes of Google and Anthropic, some of the people said...

OpenAI is laying the foundation to go public by the end of 2026, and has spent much of the past year racing to secure large amounts of computing capacity to help power OpenAI's future products and growth. The stalled Nvidia pact is a blow to this effort and shows how Chief Executive Sam Altman's penchant for announcing flashy big-ticket deals carries the potential to backfire if the terms have yet to be finalized. In a joint announcement unveiling the September deal with Altman and OpenAI President Greg Brockman, Huang called the deal "the largest computing project in history...." OpenAI went on to sign a string of other agreements with chip and cloud companies that helped fuel a global stock market rally.

But investors have since grown jittery about the startup's ability to pay for these deals, leading to a sell-off in some tech stocks tied to OpenAI. Altman has said that the deals put the startup on the hook for $1.4 trillion in computing commitments — more than 100 times the revenue it was on pace to generate last year. OpenAI executives say the total commitments are lower when you account for overlap in some of the deals, and that the agreements will take place over a long period of time.... Huang has indicated to associates that he still believes it's crucially important to provide OpenAI with financial support in one form or another, in part because OpenAI is one of the chip designer's largest customers, people familiar with the matter said. If OpenAI were to fall behind other AI developers, it could dent Nvidia's sales.

"Speaking to reporters in Taipei, Huang said it was 'nonsense' to say he was unhappy with OpenAI," CNBC reported Saturday: "We are going to make a huge investment in OpenAI. I believe in OpenAI, the work that they do is incredible, they are one of the most consequential companies of our time and I really love working with Sam," he said, referring to OpenAI CEO Sam Altman. "Sam is closing the round (of investment) and we will absolutely be involved," Huang added. "We will invest a great deal of money, probably the largest investment we've ever made."

Asked whether it would be over $100 billion, he said: "No, no, nothing like that."

Elsewhere the Journal has reported that Amazon is in talks to invest up to $50 billion in OpenAI. Thanks to Slashdot reader sinij for sharing the article.
Power

'Reverse Solar Panel' Generates Electricity at Night (extremetech.com) 34

Researchers at the University of New South Wales are developing a "reverse solar panel" that generates small amounts of electricity at night by harvesting infrared heat radiated from Earth. "In the past, scientists have demonstrated that a 'thermoradiative diode' can convert infrared radiation directly into electricity; when used to convert heat from Earth, they exploit the temperature difference between Earth and the night sky, generating a current directly from heat," notes ExtremeTech. "This approach completely eliminates the need for heat to generate steam, though the resulting capacity is fairly low." From the report: The researchers estimate they could generate only about a watt per square meter, which isn't much. One reason for the low output is that the Earth's atmosphere lessens the heat differential that drives the generative process; in space, though, that's not an issue.

Now, researchers believe that the ability to generate power in the moments between direct sunlight could help power satellites. That could be especially true in deep space, where periods without sunlight can be longer, and sunlight is often weaker; in these situations, losing electricity to heat loss is unacceptable.

Many satellites already use heat to generate electricity, though with a much more rarified "thermoelectric generator" that uses rare, expensive materials like plutonium to create heat. With thermoradiative diodes, the heat source can be the Sun-warmed body of the satellite itself.

Transportation

UK's First Rapid-Charging Battery Train Ready For Boarding (theguardian.com) 72

An anonymous reader quotes a report from the Guardian: The UK's first superfast-charging train running only on battery power will come into passenger service this weekend -- operating a five-mile return route in west London. Great Western Railway (GWR) will send the converted London Underground train out from 5.30am to cover the full Saturday timetable on the West Ealing to Greenford branch line, four stops and 12 minutes each way, and now carrying up to 273 passengers, should its celebrity stoke up the demand.

The battery will recharge in just three and a half minutes back at West Ealing station between trips, using a 2,000kW charger connected to a few meters of rail that only becomes live when the train stops directly overhead. There are hopes within government and industry that this technology could one day replace diesel trains on routes that have proved difficult or expensive to electrify with overhead wires, as the decarbonization of rail continues.

The train has proved itself capable of going more than 200 miles on a single charge -- last year setting a world record for the farthest travelled by a battery-electric train, smashing a German record set in 2021. The GWR train and the fast-charge technology has been trialled on the 2.5-mile line since early 2024, but has not yet carried paying passengers.

Earth

US Leads Record Global Surge in Gas-Fired Power Driven by AI Demands (theguardian.com) 36

An anonymous reader shares a report: The US is leading a huge global surge in new gas-fired power generation that will cause a major leap in planet-heating emissions, with this record boom driven by the expansion of energy-hungry datacenters to service AI, according to a new forecast.

This year is set to shatter the annual record for new gas power additions around the world, with projects in development expected to grow existing global gas capacity by nearly 50%, a report by Global Energy Monitor (GEM) found. The US is at the forefront of a global push for gas that is set to escalate over the next five years, after tripling its planned gas-fired capacity in 2025.

Much of this new capacity will be devoted to the vast electricity needs of AI, with a third of the 252 gigawatts of gas power in development set to be situated on site at datacenters. All of this new gas energy is set to come at a significant cost to the climate, amid ongoing warnings from scientists that fossil fuels must be rapidly phased out to avoid disastrous global heating.

Movies

Brandon Sanderson's Literary Fantasy Universe 'Cosmere' Picked Up by Apple TV (hollywoodreporter.com) 49

Apple TV+ has landed the screen rights to Cosmere, the sprawling literary universe created by Brandon Sanderson. "The first titles being eyed for adaptation are the Mistborn series, for features, and The Stormlight Archive series, for television," reports the Hollywood Reporter. From the report: The deal is rare one, coming after a competitive situation which saw Sanderson meet with most of the studio heads in town. It gives the author rarefied control over the screen translations, according to sources. Sanderson will be the architect of the universe; will write, produce and consult; and will have approvals. That's a level of involvement that not even J.K. Rowling or George R.R. Martin enjoys.

Sanderson's literary success and fan following helped pave the way for such a deal. One of the most prolific and beloved fantasy authors working today, he has sold over 50 million copies of his books worldwide, collectively across his series. [...] While the Cosmere books are set in various worlds and eras, the underlying premise concerns a being named Adolnasium who is killed by a group of conspirators. The being's power is broken into 16 shards, which are then spread out throughout many worlds by the conspirators, spreading many kinds of magic across the universe.

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