Earth

Corals Won't Survive a Warmer Planet, a New Study Finds (nytimes.com) 44

If global temperatures continue rising, virtually all the corals in the Atlantic Ocean will stop growing and could succumb to erosion by the end of the century, a new study finds. From a report: The analysis of over 400 existing coral reefs across the Atlantic Ocean estimates that more than 70 percent of the region's reefs will begin dying by 2040 even under optimistic climate warming scenarios. And if the planet exceeds 2 degrees Celsius of warming above preindustrial temperatures by the end of the century, 99 percent of corals in the region would meet this fate. Today, the planet has warmed about 1.3 degrees Celsius over preindustrial temperatures.

The implications are grave. Corals act as the fundamental building blocks of reefs, providing habitat for thousands of species of fish and other marine life. They are also bulwarks that break up waves and help protect shorelines from rising sea levels. A quarter of all ocean life depends on coral reefs and over a billion people worldwide benefit from them, according to the National Oceanic and Atmospheric Administration.

Earth

Gas Stove Makers Quietly Delete Air Pollution Warnings as They Fight Mandatory Health Labels (grist.org) 153

The home appliance industry would like you to believe that gas-burning stoves are not a risk to your health -- and several companies that make the devices are scrambling to erase their prior acknowledgements that they are. From a report: That claim is at the heart of a lawsuit the Association of Home Appliance Manufacturers has filed against the state of Colorado to stop it from requiring natural gas stoves, which burn methane, to carry health labels not unlike those on every pack of cigarettes. "Understand the air quality implications of having an indoor gas stove," the warning would read.

The law was to take effect August 5 but is now on hold, and state officials did not respond to a request for comment. In its federal lawsuit, the Association -- whose board includes representatives of LG Electronics, BSH Home Appliance Corp. (which makes Bosch appliances), Whirlpool, and Samsung Electronics -- asserts that the labeling requirement is "unconstitutional compelled speech" and illegal under the First Amendment. It calls the legislation a climate law disguised as a health law and, most strikingly, it claims there is "no association between gas stoves and adverse health outcomes."

China

A New Report Finds China's Space Program Will Soon Equal That of the US (arstechnica.com) 93

An anonymous reader quotes a report from Ars Technica: As Jonathan Roll neared completion of a master's degree in science and technology policy at Arizona State University three years ago, he did some research into recent developments by China's ascendant space program. He came away impressed by the country's growing ambitions. Now a full-time research analyst at the university, Roll was recently asked to take a deeper dive into Chinese space plans. "I thought I had a pretty good read on this when I was finishing grad school," Roll told Ars. "That almost everything needed to be updated, or had changed three years later, was pretty scary. On all these fronts, they've made pretty significant progress. They are taking all of the cues from our Western system about what's really galvanized innovation, and they are off to the races with it."

Roll is the co-author of a new report, titled "Redshift," on the acceleration of China's commercial and civil space activities and the threat these pose to similar efforts in the United States. Published on Tuesday, the report was sponsored by the US-based Commercial Space Federation, which advocates for the country's commercial space industry. It is a sobering read and comes as China not only projects to land humans on the lunar surface before the US can return, but also is advancing across several spaceflight fronts to challenge America. "The trend line is unmistakable," the report states. "China is not only racing to catch up -- it is setting pace, deregulating, and, at times, redefining what leadership looks like on and above Earth. This new space race will not be won with a single breakthrough or headline achievement, but with sustained commitment, clear-eyed vigilance, and a willingness to adapt over decades."
"The key takeaway here is that there is an acceleration," said Dave Cavossa, president of the Commercial Spaceflight Federation. "The United States is still ahead today in a lot of areas in space. But the Chinese are advancing very quickly and poised to overtake us in the next five to 10 years if we don't do something."

"There's other things along the lines of budget battles," Cavossa said. "We don't want to see the US government scaling back its reliance on commercial satellite communications. We don't want to see them scaling back commercial remote sensing data buys, which is what they've been doing, or at least threatening to do. We want to make sure that there's a seamless transition from the ISS to commercial LEO destinations, and then a transition away from old programs of record to commercial transportation alternatives. That's what the US government can do and Congress can do here in the next couple of years to make sure that we stay ahead."
Transportation

Nature Editorial Calls for Rail Renaissance as Networks Mark 200 Years (nature.com) 80

Nature's editorial board urged governments on Tuesday to reverse decades of rail disinvestment as railways mark their 200th anniversary September 27, citing transport sector emissions that grew 1.7% annually from 1990-2022 and now generate one-quarter of global CO2. Rail produces one-fifth the emissions of cars per passenger kilometer yet carries just 8.4% of EU passenger traffic versus 73% for automobiles.

The journal called for broader investment criteria beyond narrow profitability metrics and noted only one-third of countries have incorporated transport into their Paris Agreement commitments. Global rail freight fell from 38% to 24% between 1980-2017 while US networks shrank from 400,000 to 200,000 kilometers since 1914. Africa operates 87,000 rail kilometers continent-wide compared to India's 65,000 kilometers in one-tenth the area. Transport emissions must decline 3% yearly to meet net-zero targets.
Power

'If We Want Bigger Wind Turbines, We're Gonna Need Bigger Airplanes' (ieee.org) 184

Long-time Slashdot reader schwit1 shared this article from IEEE Spectrum: The world's largest airplane, when it's built, will stretch more than a football field from tip to tail. Sixty percent longer than the biggest existing aircraft, with 12 times as much cargo space as a 747, the behemoth will look like an oil tanker that's sprouted wings — aeronautical engineering at a preposterous scale.

Called WindRunner, and expected by 2030, it'll haul just one thing: massive wind-turbine blades. In most parts of the world, onshore wind-turbine blades can be built to a length of 70 meters, max. This size constraint comes not from the limits of blade engineering or physics; it's transportation. Any larger and the blades couldn't be moved over land, since they wouldn't fit through tunnels or overpasses, or be able to accommodate some of the sharper curves of roads and rails.

So the WindRunner's developer, Radia of Boulder, Colorado, has staked its business model on the idea that the only way to get extralarge blades to wind farms is to fly them there... Radia's plane will be able to hold two 95-meter blades or one 105-meter blade, and land on makeshift dirt runways adjacent to wind farms. This may sound audacious — an act of hubris undertaken for its own sake. But Radia's supporters argue that WindRunner is simply the right tool for the job — the only way to make onshore wind turbines bigger. Bigger turbines, after all, can generate more energy at a lower cost per megawatt. But the question is: Will supersizing airplanes be worth the trouble...?

Having fewer total turbines means a wind farm could space them farther apart, avoiding airflow interference. The turbines would be nearly twice as tall, so they'll reach a higher, gustier part of the atmosphere. And big turbines don't need to spin as quickly, so they would make economic sense in places with average wind speeds around 5 meters per second compared with the roughly 7 m/s needed to sustain smaller units. "The result...is more than a doubling of the acres in the world where wind is viable," says Mark Lundstrom [Radia's founder and CEO].

The executive director at America's National Renewable Energy Laboratory Foundation points out that one day blades could just be 3D-printed on-site — negating the need for the airplane altogether. But 3D printing for turbines is still in its earliest stages.
Earth

Can Lab-Grown Coral Restore Reefs Damaged By Climate Change? (cbsnews.com) 40

Many coral reefs "have now turned ghostly white," reports CBS News — and "a major culprit is climate change."

SFGate adds that more than 50% of the world's coral reefs have been lost, mostly over the past 10 years, according to coral reef scientist Rebecca Albright at the California Academy of Sciences. "If changes aren't made soon, 90% to 99% of the coral reefs that are remaining could be deteriorated by 2050, Albright said..."

But CBS News notes that Albright's lab is the first in America to successfully spawn coral to regenerate the reefs: The lab is mastering the art and science of creating baby corals, and the scientists have brought their expertise into the wild. The location: the second-largest reef in the world, known as the Mesoamerican Reef, stretching some 700 miles along the coasts of Mexico, Belize, Guatemala, and Honduras... Armed with test tubes, the scientists quickly dove into the water and collected the tiny packets of gametes. Back on land, the eggs were fertilized, incubated, and then brought back into the wild. "Then we planted over 3,000 baby corals back to the reef," explained Albright. The baby corals are now two months old. The Roatan staff will dive in a few months to see how many survived.
Scientists are worried because bleaching events "are becoming more common," notes SFGate, "happening more frequently and affecting more parts of the world... The most current event was confirmed on April 15, 2024, and is still ongoing, impacting approximately 84% of the world's coral reefs as of August 31.

"It has been documented in at least 83 countries and territories."
Space

Most Earth-Like Planet Yet May Have Been Found Just 40 Light Years Away (sciencealert.com) 69

One of the worlds in the TRAPPIST-1 system, a mere 40 light-years away, just might be clad in a life-supporting atmosphere," reports ScienceAlert.

"In exciting new JWST observations, the Earth-sized exoplanet TRAPPIST-1e shows hints of a gaseous envelope similar to our own, one that could facilitate liquid water on the surface." Although the detection is ambiguous and needs extensive follow-up to find out what the deal is, it's the closest astronomers have come yet in their quest to find a second Earth... [T]he first step is finding exoplanets that are the right distance from their host star, occupying a zone where water neither freezes under extreme cold nor evaporates under extreme heat. Announced in 2016, the discovery of the TRAPPIST-1 system was immediately exciting for this reason. The red dwarf star hosts seven exoplanets that have a rocky composition (as opposed to gas or ice giants), several of which are bang in the star's habitable, liquid water zone...

Red dwarf stars are also much more active than Sun-like stars, rampant with flare activity that, scientists have speculated, may have stripped any planetary atmospheres in the vicinity. Closer inspections of TRAPPIST-1d, one of the other worlds in the star's habitable zone, have turned up no trace of an atmosphere. But TRAPPIST-1e is a little more comfortably located, at a slightly greater distance from the star... [T]he spectrum is consistent with an atmosphere rich in molecular nitrogen, with trace amounts of carbon dioxide and methane.

This is pretty tantalizing. Earth's atmosphere is roughly 78 percent molecular nitrogen. If the results can be validated, TRAPPIST-1e might just be the most Earth-like exoplanet discovered to date. That is not a small if, though. Luckily, more JWST observations are in the pipeline, and the researchers should be able to validate or rule out an atmosphere very soon.

After analyzing four transits of TRAPPIST-1e across TRAPPIST-1, "We are seeing two possible explanations," says astrophysicist Ryan MacDonald of the University of St Andrews in the UK. "The most exciting possibility is that TRAPPIST-1e could have a so-called secondary atmosphere containing heavy gases like nitrogen. "But our initial observations cannot yet rule out a bare rock with no atmosphere..."

Astrophysicist Ana Glidden of MIT led the second team interpreting the results, and says "We are really still in the early stages of learning what kind of amazing science we can do with Webb. It's incredible to measure the details of starlight around Earth-sized planets 40 light-years away and learn what it might be like there, if life could be possible there."

"We're in a new age of exploration that's very exciting to be a part of."
Earth

Pilot Union Urges FAA To Reject Rainmaker's Drone Cloud-Seeding Plan (techcrunch.com) 18

An anonymous reader quotes a report from TechCrunch: Rainmaker Technology's bid to deploy cloud-seeding flares on small drones is being met by resistance from the airline pilots union, which has urged the Federal Aviation Administration to consider denying the startup's request unless it meets stricter safety guidelines. The FAA's decision will signal how the regulator views weather modification by unmanned aerial systems going forward. Rainmaker's bet on small drones hangs in the balance.

The Air Line Pilots Association (ALPA) told the FAA that Rainmaker's petition "fails to demonstrate an equivalent level of safety" and poses "an extreme safety risk." Rainmaker is seeking an exemption from rules that bar small drones from carrying hazardous materials. The startup filed in July, and the FAA has yet to rule. Instead, it issued a follow-up request for information, pressing for specifics on operations and safety. In its filing, Rainmaker proposed using two flare types, one "burn-in-place" and the other ejectable, on its Elijah quadcopter, to disperse particles that stimulate precipitation. Elijah has a maximum altitude of 15,000 feet MSL (measured from sea level), which sits inside controlled airspace where commercial airliners routinely fly. Drones need permission from Air Traffic Control to fly inside this bubble. Rainmaker's petition says it will operate in Class G (uncontrolled) airspace unless otherwise authorized. ALPA notes the filing doesn't clearly state where flights would occur or what altitudes would be used. Rainmaker and ALPA did not reply to TechCrunch's requests for comment.

The union also objects to the flares themselves, citing concerns about foreign object debris and fire safety. ALPA points out that the petition does not include trajectory modeling of the ejectable casings or analysis on the environmental impacts of chemical agents. However, Rainmaker says the flights will occur over rural areas and over properties owned by private landlords "with whom Rainmaker has developed close working relationships." [...] What happens next hinges on whether the FAA thinks those mitigations are sufficient. However it's decided, the agency's response will likely set the tone for novel cloud-seeding approaches.

EU

EU Countries Delay Deal on New Climate Goal, Diplomats Say (reuters.com) 13

An anonymous reader shares a report: European Union countries have shelved plans to approve a new climate change target next week, after pushback from governments including France and Germany over plans to quickly land a deal, three EU diplomats told Reuters on Friday. Countries are discussing a legally-binding target to cut net EU greenhouse gas emissions by 90% by 2040, from 1990 levels - with a share of this covered by buying foreign carbon credits.

The European Commission has said this would offer investors certainty and keep Europe on track for net zero emissions by 2050. Climate change has made Europe the world's fastest-warming continent, unleashing deadly heatwaves and record-breaking wildfires. But EU governments are divided over how ambitious to be in tackling global warming, as governments also try to increase defence spending and support struggling industries.

Earth

Scientists Link Hundreds of Severe Heat Waves To Fossil Fuel Producers' Pollution 176

A new study published in Nature links more than 200 severe heat waves directly to greenhouse gas pollution from major fossil fuel producers like ExxonMobil, Chevron, and BP. Researchers found that up to a quarter of these heat waves would have been virtually impossible without emissions from oil, coal, and cement companies. NPR reports: The new study, published Wednesday in the journal Nature, found that 213 heat waves were substantially more likely and intense because of the activity of major fossil fuel producers, also called carbon majors. They include oil, coal and cement companies, as well as some countries. The scientists found as much as a quarter of the heat waves would be "virtually impossible" without the climate pollution from major fossil fuel producers. Some individual fossil fuel companies, such as ExxonMobil, Chevron and BP, had emissions high enough to cause some of the more extreme heat waves, the research found.

For the new study, the scientists looked at something called the disaster database, a global list of disasters maintained by university researchers, to identify heat waves "with significant casualties, economic losses and calls for international assistance. The scientists then used historical reconstructions and statistical models to see how human-caused global warming made each heat wave more likely and more intense. Then, to examine the link to major fossil fuel producers, the researchers relied on the Carbon Majors Database to understand the emissions of major oil, gas, coal and cement producers.

"We ran a climate model to reconstruct the historical period, and then we ran it again but without the emissions of a specific carbon major, thus deducing its contribution to global warming," Yann Quilcaille, climate scientist at ETH Zurich and lead author of the study, says in an email. While some of the contributions to heat waves came from larger well-known fossil fuel companies, the study found that some smaller, lesser-known fossil fuel companies are producing enough greenhouse gas emissions to cause heat waves too, Quilcaille says.
Space

Gravitational Waves Finally Prove Stephen Hawking's Black Hole Theorem (newscientist.com) 40

Physicists have confirmed Stephen Hawking's 1971 black hole area theorem with near-absolute certainty, thanks to gravitational waves from an exceptionally loud black hole collision detected by upgraded LIGO instruments. New Scientist reports: Hawking proposed his black hole area theorem in 1971, which states that when two black holes merge, the resulting black hole's event horizon -- the boundary beyond which not even light can escape the clutches of a black hole -- cannot have an area smaller than the sum of the two original black holes. The theorem echoes the second law of thermodynamics, which states that the entropy, or disorder within an object, never decreases.

Black hole mergers warp the fabric of the universe, producing tiny fluctuations in space-time known as gravitational waves, which cross the universe at the speed of light. Five gravitational wave observatories on Earth hunt for waves 10,000 times smaller than the nucleus of an atom. They include the two US-based detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) plus the Virgo detector in Italy, KAGRA in Japan and GEO600 in Germany, operated by an international collaboration known as LIGO-Virgo-KAGRA (LVK).

The recent collision, named GW250114, was almost identical to the one that created the first gravitational waves ever observed in 2015. Both involved black holes with masses between 30 and 40 times the mass of our sun and took place about 1.3 billion light years away. This time, the upgraded LIGO detectors had three times the sensitivity they had in 2015, so they were able to capture waves emanating from the collision in unprecedented detail. This allowed researchers to verify Hawking's theorem by calculating that the area of the event horizon was indeed larger after the merger.
The findings have been published in the journal Physical Review Letters.
Earth

Wind and Solar Power Fuel Over One-Third of Brazil's Electricity For First Time (apnews.com) 46

Wind and solar power generated more than a third of Brazil's electricity in August, the first month on record the two renewable sources have crossed that threshold, according to government data made public on Thursday and analyzed by energy think tank Ember. AP: The clean energy sources accounted for 34% of the country's electricity generation last month, producing a monthly record of 19 terawatt-hours (TWh), enough to power about 119 million average Brazilian homes for a month, Ember told The Associated Press.

That surpassed the previous high of 18.6 TWh set in September 2024. The milestone came as hydroelectric output, Brazil's dominant power source, fell to a four-year low. "Brazil shows how a rapidly growing economy can meet its rising need for electricity with solar and wind," said Raul Miranda, Ember's global program director based in Rio de Janeiro.

Earth

Warming Seas Threaten Key Phytoplankton Species That Fuels the Food Web (apnews.com) 121

An anonymous reader quotes a report from the Associated Press: For decades, scientists believed Prochlorococcus, the smallest and most abundant phytoplankton on Earth, would thrive in a warmer world. But new research suggests the microscopic bacterium, which forms the foundation of the marine food web and helps regulate the planet's climate, will decline sharply as seas heat up. A study published Monday in the journal Nature Microbiology found Prochlorococcus populations could shrink by as much as half in tropical oceans over the next 75 years if surface waters exceed about 82 degrees Fahrenheit (27.8 Celsius). Many tropical and subtropical sea surface temperatures are already trending above average and are projected to regularly surpass 86 degrees Fahrenheit (30 Celsius) over that same period.

"These are keystone species -- very important ones," said Francois Ribalet, a research associate professor at the University of Washington's School of Oceanography and the study's lead author. "And when a keystone species decreases in abundance, it always has consequences on ecology and biodiversity. The food web is going to change." Prochlorococcus inhabit up to 75% of Earth's sunlit surface waters and produce about one-fifth of the planet's oxygen through photosynthesis. More crucially, Ribalet said, they convert sunlight and carbon dioxide into food at the base of the marine ecosystem. "In the tropical ocean, nearly half of the food is produced by Prochlorococcus," he said. "Hundreds of species rely on these guys."

Though other forms of phytoplankton may move in and help compensate for the loss of oxygen and food, Ribalet cautioned they are not perfect substitutes. "Evolution has made this very specific interaction," he said. "Obviously, this is going to have an impact on this very unique system that has been established." The findings challenge decades of assumptions that Prochlorococcus would thrive as waters warmed. Those predictions, however, were based on limited data from lab cultures. For this study, Ribalet and his team tested water samples while traversing the Pacific over the course of a decade.

NASA

A New Four-Person Crew Will Simulate a Year-Long Mars Mission, NASA Announces (nasa.gov) 43

Somewhere in Houston, four research volunteers "will soon participate in NASA's year-long simulation of a Mars mission," NASA announced this week, saying it will provide "foundational data to inform human exploration of the Moon, Mars, and beyond."

The 378-day simulation will take place inside a 3D-printed, 1,700-square-foot habitat at NASA's Johnson Space Center in Houston — starting on October 19th and continuing until Halloween of 2026: Through a series of Earth-based missions called CHAPEA (Crew Health and Performance Exploration Analog), NASA aims to evaluate certain human health and performance factors ahead of future Mars missions. The crew will undergo realistic resource limitations, equipment failures, communication delays, isolation and confinement, and other stressors, along with simulated high-tempo extravehicular activities. These scenarios allow NASA to make informed trades between risks and interventions for long-duration exploration missions.

"As NASA gears up for crewed Artemis missions, CHAPEA and other ground analogs are helping to determine which capabilities could best support future crews in overcoming the human health and performance challenges of living and operating beyond Earth's resources — all before we send humans to Mars," said Sara Whiting, project scientist with NASA's Human Research Program at NASA Johnson. Crew members will carry out scientific research and operational tasks, including simulated Mars walks, growing a vegetable garden, robotic operations, and more. Technologies specifically designed for Mars and deep space exploration will also be tested, including a potable water dispenser and diagnostic medical equipment...

This mission, facilitated by NASA's Human Research Program, is the second one-year Mars surface simulation conducted through CHAPEA. The first mission concluded on July 6, 2024.

It's funny.  Laugh.

TypePad's Demise Ends Dave Barry's Blog. He's Moving To Substack (herald.com) 28

Humor columnist Dave Barry won the 1988 Pulitzer Prize for commentary — and answered questions from Slashdot's readers in 2003. That same year he convinced thousands of people to call a telemarketing company (which had filed a lawsuit protesting America's "Do Not Call" registry). He's criticized electronic voting machines, wrote Dave Barry in Cyberspace, and even helped popularize "Talk Like a Pirate Day."

But this week the 78-year-old humor columnist announced he's shutting his blog down. ("Actually, technically, TypePad is shutting it down, by going out of business September 30.") Dave Barry will be moving to Substack, where he'll write new humor columns — and where paying subscribers will also be able to comment and participate in chats.

On his TypePad blog, Barry wrote "GOODBYE, YOU CRAZY, WONDERFUL PEOPLE..." After [September 30th] this site will disappear, and I've made the decision not to attempt to migrate it to another platform. Everything, except Keith Richards, eventually comes to an end, and it just feels like it's time, after all these years, to let the Blog go to that Big Archive in the Sky.

It has been a fun couple of decades, hanging out here with you very funny folks — discussing the International Squirrel Conspiracy, and what WBAGNFARB, and all the entities, human and otherwise, that qualify for Florida drivers' licenses, and the many, many other random topics that made up whatever this weird thing has been. Thanks to all of you — the people who sent me all those news items; the excellent commenters; the lurkers — for being part of this. Really: Thank you. You made it work.

Dave Barry reminds readers that he'll continue blogging on TypePad until the end of September — and that after that they can still reach him at his new Substack blog (where "you don't have to subscribe to read my posts").

And his Substack blog already has a humorous "About" page... When people hear that I'm starting a Substack, the question they always ask is: "Dave Barry? Isn't he dead?"

I'm delighted to report that the answer is: Not yet! I'm still alive, and along with an estimated 85 percent of the Earth's population, I have a Substack, which I invite you to subscribe to...

In 2005 I stopped writing a weekly column, after which the newspaper industry — draw your own conclusions from this — collapsed. I've continued to write books, and every year I write a massive Year in Review, which is wildly popular with everyone except the people who hate it. But I've missed writing columns, which is why I started this Substack. I will use it to comment on the major issues of the day, ranging all the way from stories about snakes showing up in people's toilets to stories about completely different scary things showing up in people's toilets. I will sometimes even write about issues that are totally unrelated to toilets. That is how wide-ranging this Substack will be. I plan to occasionally do chats, and I may even do podcasts or interviews with my famous minor-celebrity friends if I can get them to return my phone calls. Also I'll publish the Year in Review here.

So that's the plan. I'm hoping to build a community of civic-minded people with a sincere interest in reading about and discussing useless and often wildly inaccurate things instead of doing something productive. Kind of like Congress, but without a dress code.

A frequently-asked questions list then promises the Substrack will "have much more writing from me, and more interaction between me and subscribers. The blog has always been something I did in my spare time, when I wasn't working on something else, usually a book. The Substack will be my main focus, essentially my day job." Q: [H]ow much does a paid subscription to your Substack cost?

A. Eleven million dollars.

Q. Whoa. That's expensive!

A. You drive a hard bargain! But OK, for you let's make it $5 a month, or $50 a year....

Q. What if I don't want to pay?

A. Burly men will barge into your home and confiscate your major appliances. [Barry then crosses this out using HTML strikethrough characters.] Nothing bad will happen to you. You can still see my Substack posts, though you won't be able to comment on posts or participate in chats.

Thanks to wiredog (Slashdot reader #43,288) for sharing the news.
Businesses

America's First Sodium-Ion Battery Manufacturer Ceases Operations (wral.com) 85

Grady Martin writes: Natron Energy has announced the immediate cessation of all operations, including its manufacturing plant in Holland, Michigan, and plans to build a $1.4 billion "gigafactory" in North Carolina. A company representative cited "efforts to raise sufficient new funding [being] unsuccessful" as the rationale for the decision.

When previously covered by Slashdot, comments on the merits of sodium-ion included the ability to use aluminum in lieu of heavier, more expensive copper anodes; a charge rate ten times that of lithium-ion; and Earth's abundance of sodium -- though at least one anonymous coward predicted the cancellation of the project.

Wireless Networking

Amazon's Project Kuiper Strikes Its First Satellite Internet Deal With an Airline (theverge.com) 13

Amazon's Project Kuiper has landed its first airline deal with JetBlue and plans to offer satellite-powered in-flight Wi-Fi starting in 2027. The Verge reports: Yesterday, Amazon's Panos Panay showed off a speed test using an "enterprise-grade customer terminal" (aka, dish) to achieve a download speed of just over a gigabit. Fine, but we'll have to wait to see how it performs once individuals using consumer dishes at scale. Amazon says the first customers will start using the service this year, ahead of a broader rollout in 2026.

Project Kuiper-powered Wi-Fi will be available on "select" aircraft initially. Amazon says its satellites will provide lower latency and "more reliable service" for passengers, as they orbit between 367 and 391 miles above Earth -- far closer than the geostationary satellites that orbit around 22,369 miles above the planet. Amazon has also struck a deal with Airbus to build Project Kuiper's satellite internet service into its aircraft.

EU

EU To Boost Satellite Defences Against GPS Jamming, Defence Commissioner Says (reuters.com) 39

An anonymous reader shares a report: The European Union will deploy additional satellites in low Earth orbit to strengthen resilience against GPS interferences and will improve capabilities to detect it, EU Defence Commissioner Andrius Kubilius said on Monday. His remarks followed an incident on Sunday in which the GPS system aboard European Commission President Ursula von der Leyen's aircraft was jammed en route to Bulgaria. Bulgarian authorities suspect the jamming was due to due to interference by Russia, an EU spokesperson said.
Intel

Intel Get $5.7 Billion Early. What's the Government's Strategy? (msn.com) 93

Intel amended its deal with the U.S. Department of Commerce "to remove earlier project milestones," reports Reuters, "and received about $5.7 billion in cash sooner than planned."

"The move will give Intel more flexibility over the funds." The amended agreement, which revises a November 2024 funding deal, retains some guardrails that prevent the chipmaker from using the funds for dividends and buybacks, doing certain control-changing deals and from expanding in certain countries.
The move makes the Wall Street Journal wonder what, beyond equity, the U.S. now gets in return, calling government's position "a stake without a strategy." The U.S. has historically shied away from putting money into private business. It can't really outguess the market on where the most promising returns lie. Yet there are exceptions. Sometimes a company or industry risks failing without public support, and that failure would hurt the whole country, not just its shareholders and employees. Intel meets both conditions. It isn't failing, but it is losing money, its core business is in decline, and it lacks the capital and customers needed to make the most advanced semiconductors. If Intel were to fail, it would take a sizable chunk of the semiconductor industrial base with it. At a time of existential competition with China, that is a national emergency...

[U.S. Commerce Secretary Howard Lutnick] said as a shareholder, the U.S. would help Intel "to create the most advanced chips in the world." And yet the deal doesn't provide Intel with new resources to accomplish that. Rather, to get the remaining $9 billion, Intel had to give the U.S. equity. This is more like a tax than an investment: Shareholders gave up a 10th of their ownership in return for money the company was supposed to get anyway... Some of the administration's forays into private business do reflect strategic thinking, such as the Pentagon's 15% stake in MP Materials in exchange for investment and contracts that help make the company a viable alternative to China as a supplier of rare-earth magnets for products such as automobiles, wind turbines, jet fighters and missile systems. But more often, companies recoil from government ownership...

Though the U.S. stake dilutes Intel's existing shareholders, its stock has held up. There could be several reasons. It eliminates uncertainty over whether the remaining $9 billion in federal funds will be forthcoming... [B]ecause Washington has a vested interest in Intel's share price, investors believe it may prod companies such as Nvidia and Apple to buy more of its chips.

But that only goes so far, the article seems to conclude, offering this quote from an analyst Bernstein investment research. "If Intel can prove they can make these leading-edge products in high volume that meets specifications at a good cost structure, they'll have customers lined up around the block. If they can't prove they can do it, what customer will put meaningful volume to them regardless of what pressure the U.S. government brings to bear?"

CBS News also notes the U.S. government stake "is being criticized by conservatives and some economic policy experts alike, who worry such extensive government intervention undermines free enterprise."

Thanks to Slashdot reader joshuark for sharing the news.
Earth

30 Years of Satellite Data Confirm Predictions from Early Models of Sea Level Rise (tulane.edu) 199

"The ultimate test of climate projections is to compare them with what has played out..." says earth sciences professor Torbjörn Törnqvist, lead author on a new study published in the open-access journal Earth's Future (published by the American Geophysical Union).

But after "decades of observations," he says his researchers "were quite amazed how good those early projections were, especially when you think about how crude the models were back then, compared to what is available now." "For anyone who questions the role of humans in changing our climate, here is some of the best proof that we have understood for decades what is really happening, and that we can make credible projections...."

A new era of monitoring global sea-level change took off when satellites were launched in the early 1990s to measure the height of the ocean surface. This showed that the rate of global sea-level rise since that time has averaged about one eighth of an inch per year. Only more recently, it became possible to detect that the rate of global sea-level rise is accelerating. When NASA researchers demonstrated in October 2024 that the rate has doubled during this 30-year period, the time was right to compare this finding with projections that were made during the mid-1990s, independent of the satellite measurements.

In 1996, the Intergovernmental Panel on Climate Change published an assessment report soon after the satellite-based sea-level measurements had started. It projected that the most likely amount of global sea-level rise over the next 30 years would be almost 8 centimeters (3 inches), remarkably close to the 9 centimeters that has occurred.

But it also underestimated the role of melting ice sheets by more than 2 centimeters (about 1 inch). At the time, little was known about the role of warming ocean waters and how that could destabilize marine sectors of the Antarctic Ice Sheet from below. Ice flow from the Greenland Ice Sheet into the ocean has also been faster than foreseen.

"The findings provide confidence in model-based climate projections," according to the paper. Again, its two key points:
  • The largest disparities between projections and observations were due to underestimated dynamic mass loss of ice sheets
  • Comparison of past projections with subsequent observations gives confidence in future climate projections

Thanks to Slashdot reader Mr. Dollar Ton for sharing the news.


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