An anonymous reader quotes a report from NPR: Major cities across China are sinking, putting a substantial portion of the country's rapidly urbanizing population in harm's way in the coming decades, according to a sweeping new analysis by Chinese scientists. Subsidence is the technical term for when land sinks relative to its surroundings, and it's a major threat for cities around the world. It accelerates local sea level rise from climate change, because the land is getting lower as the ocean gets higher. Urban subsidence can also affect inland cities by damaging buildings and roads, and causing drainage issues when water is trapped in sinking areas.

Out of 82 major Chinese cities, nearly half are measurably subsiding, according to the new study, which was published in the journal Science and conducted by more than 50 scientists at Chinese research institutes. The areas that are sinking are home to nearly one third of China's urban population. And the authors estimate that about a quarter of China's coastal land will be below sea level in the next hundred years, largely due to subsidence. That means tens of millions of people are already at risk, and that could grow to hundreds of millions if China's cities continue to both grow in population and subside at their current rate, and seas continue to rise. Oceans are rising steadily due to greenhouse gas emissions from burning oil, gas and coal.

This is the first time scientists have used satellite data to systematically measure how much cities are sinking across China. The study measured how much cities subsided between 2015 and 2022. Similar recent studies in Europe and the United States have also found significant subsidence in some cities, but didn't show the same widespread sinking that is present across China. "The places that really have high levels of subsidence are Asia," says Nicholls, who was one of the authors of a recent study that analyzed sinking cities across the U.S. Asia is at higher risk, he says, because many Asian cities are built on river deltas that are prone to sinking when you put heavy buildings on top and pump groundwater out from below. The places that are sinking most rapidly in the U.S., such as New Orleans, share that geology.

Meta debuted a new version of its powerful Llama AI model, its latest effort to keep pace with similar technology from companies like OpenAI, X and Google. The company describes Llama 3 8B and Llama 3 70B, containing 8 billion and 70 billion parameters respectively, as a "major leap" in performance compared to their predecessors.

Meta claims that the Llama 3 models, trained on custom-built 24,000 GPU clusters, are among the best-performing generative AI models available for their respective parameter counts. The company supports this claim by citing the models' scores on popular AI benchmarks such as MMLU, ARC, and DROP, which attempt to measure knowledge, skill acquisition, and reasoning abilities. Despite the ongoing debate about the usefulness and validity of these benchmarks, they remain one of the few standardized methods for evaluating AI models. Llama 3 8B outperforms other open-source models like Mistral's Mistral 7B and Google's Gemma 7B on at least nine benchmarks, showcasing its potential in various domains such as biology, physics, chemistry, mathematics, and commonsense reasoning.

TechCrunch adds: Now, Mistral 7B and Gemma 7B aren't exactly on the bleeding edge (Mistral 7B was released last September), and in a few of benchmarks Meta cites, Llama 3 8B scores only a few percentage points higher than either. But Meta also makes the claim that the larger-parameter-count Llama 3 model, Llama 3 70B, is competitive with flagship generative AI models including Gemini 1.5 Pro, the latest in Google's Gemini series.

Jess Weatherbed reports via The Verge: It's alive! A day after announcing it was retiring Atlas, its hydraulic robot, Boston Dynamics has introduced a new, all-electric version of its humanoid machine. The next-generation Atlas robot is designed to offer a far greater range of movement than its predecessor. Boston Dynamics wanted the new version to show that Atlas can keep a humanoid form without limiting "how a bipedal robot can move." The new version has been redesigned with swiveling joints that the company claims make it "uniquely capable of tackling dull, dirty, and dangerous tasks."

The teaser showcasing the new robot's capabilities is as unnerving as it is theatrical. The video starts with Atlas lying in a cadaver-like fashion on the floor before it swiftly folds its legs backward over its body and rises to a standing position in a manner befitting some kind of Cronenberg body-horror flick. Its curved, illuminated head does add some Pixar lamp-like charm, but the way Atlas then spins at the waist and marches toward the camera really feels rather jarring. The design itself is also a little more humanoid. Similar to bipedal robots like Tesla's Optimus, the new Atlas now has longer limbs, a straighter back, and a distinct "head" that can swivel around as needed. There are no cables in sight, and its "face" includes a built-in ring light. It is a marked improvement on its predecessor and now features a bunch of Boston Dynamics' new AI and machine learning tools. [...] Boston Dynamics said the new Atlas will be tested with a small group of customers "over the next few years," starting with Hyundai.

Meanwhile, in Southern California, nonprofit news site Canary Media reports that an old gas combustion plant is being replaced by a "power bank" named Nova.

It's expected to store "more electricity than all but one battery plant currently operating in the U.S." The billion-dollar project, with 680 megawatts and 2,720 megawatt-hours, will help California shift its nation-leading solar generation into the critical evening and nighttime hours, bolstering the grid against the heat waves that have pushed it to the brink multiple times in recent years... The town of Menifee gets to move on from the power plant exhaust that used to join the smog flowing from Los Angeles... And the grid gets a bunch more clean capacity that can, ideally, displace fossil fuels...

Moreover, [the power bank] represents Calpine's grand arrival in the energy storage market, after years operating one of the biggest independent gas power plant fleets in the country alongside Vistra and NRG... Federal analysts predict 2024 will be the biggest-ever year for grid battery installations across the U.S., and they highlighted Calpine's project as one of the single largest projects. The 620 megawatts the company plans to energize this year represent more than 4% of the industry's total expected new additions.

Many of these new grid batteries will be built in California, which needs all the dispatchable power it can get to meet demand when its massive solar fleet stops producing, and to keep pace with the electrification of vehicles and buildings. The Menifee Power Bank, and the other gigawatts worth of storage expected to come online in the state this year, will deliver much-needed reinforcement.
The company says it's planning "a portfolio" of 2,000 megawatts of California battery capacity.

But even this 680-megawatt project consists of 1,096 total battery containers holding 26,304 battery modules (or a total of 3 million cells), "all manufactured by Chinese battery powerhouse BYD, according to Robert Stuart, an electrical project manager with Calpine. That's enough electricity to supply 680,000 homes for four hours before it runs out." What's remarkable is just how quickly the project came together. Construction began last August, and is expected to hit 510 megawatts of fully operational capacity over the course of this summer, even as installation continues on other parts of the plant. Erecting a conventional gas plant of comparable scale would have taken three or four years of construction labor, due to the complexity of the systems and the many different trades required for it, Stuart told Canary Media... That speed and flexibility makes batteries a crucial solution as utilities across the nation grapple with a spike in expected electricity demand unlike anything seen in the last few decades.
The article notes a 2013 Caifornia policy mandating battery storage for its utility companies, which "kicked off a decade-long project to will an energy storage market into existence through methodical policies and regulations, and the knock-on effects of building the nation's foremost solar fleet." Those energy storage policies succeeded in jumpstarting the modern grid battery market: California leads the nation with more than 7 gigawatts of batteries installed as of last year (though Texas is poised to overtake California in battery installations this year, on the back of no particular policy effort but a general openness to building energy projects)... California's interlocking climate regulations effectively rule out new gas construction. The state's energy roadmap instead calls for massive expansion of battery capacity to shift the ample amounts of solar generation into the evening peaks.
"These trends, along with the falling price of batteries and maturing business model for storage, nudged Calpine to get into the battery business, too."

Popular Science reports that early last week, researchers at the U.S. Energy Department's Princeton Plasma Physics Laboratory revealed their new "MUSE" stellarator — "a unique fusion reactor that uses off-the-shelf and 3D-printed materials to contain its superheated plasma."

The researchers' announcement says the technique suggests "a simple way to build future devices for less cost and allow researchers to test new concepts for future fusion power plants." Stellarators typically rely on complicated electromagnets that have complex shapes and create their magnetic fields through the flow of electricity. Those electromagnets must be built precisely with very little room for error, increasing their cost. However, permanent magnets, like the magnets that hold art to refrigerator doors, do not need electric currents to create their fields. They can also be ordered off the shelf from industrial suppliers and then embedded in a 3D-printed shell around the device's vacuum vessel, which holds the plasma.

"MUSE is largely constructed with commercially available parts," said Michael Zarnstorff, a senior research physicist at PPPL. "By working with 3D-printing companies and magnet suppliers, we can shop around and buy the precision we need instead of making it ourselves." The original insight that permanent magnets could be the foundation for a new, more affordable stellarator variety came to Zarnstorff in 2014. "I realized that even if they were situated alongside other magnets, rare-earth permanent magnets could generate and maintain the magnetic fields necessary to confine the plasma so fusion reactions can occur," Zarnstorff said, "and that's the property that makes this technique work." [...]

In addition to being an engineering breakthrough, MUSE also exhibits a theoretical property known as quasisymmetry to a higher degree than any other stellarator has before. It is also the first device completed anywhere in the world that was designed specifically to have a type of quasisymmetry known as quasiaxisymmetry. Conceived by physicist Allen Boozer at PPPL in the early 1980s, quasisymmetry means that although the shape of the magnetic field inside the stellarator may not be the same around the physical shape of the stellarator, the magnetic field's strength is uniform around the device, leading to good plasma confinement and higher likelihood that fusion reactions will occur. "In fact, MUSE's quasisymmetry optimization is at least 100 times better than any existing stellarator," Zarnstorff said.

"The fact that we were able to design and build this stellarator is a real achievement," said Tony Qian, a graduate student in the Princeton Program in Plasma Physics, which is based at PPPL.
Also covered by Gizmodo. Thanks to Slashdot reader christoban for sharing the news.

Calpine's billion-dolllar Nova Power Bank near Los Angeles will be among the largest in the world when it comes online later this year. According to Reuters, the plant is built on the site of a failed gas-fired power plant and "will be able to power about 680,000 homes for up to four hours when charged." From the report: The 680-megawatt lithium-ion battery bank is big even for California, which boasts about 55% of the nation's power storage capacity, according to data from the U.S. Energy Information Administration. Calpine will bring online 620 MW of the bank in two phases this year starting in the summer and open the remaining 60 MW in 2025. [...] Calpine, best known in the state for its fleet of gas plants, has about 2,000 MW of battery capacity under development. California was a pioneer in mandating that its utilities begin procuring energy storage more than a decade ago. The state is expected to need about 50 gigawatts of battery storage to meet its 2045 goal of getting all of its power from carbon-free sources, up from about 7 GW today.

China is rapidly advancing its space capabilities to challenge the United States' dominance in space, as evidenced by its significant increase in on-orbit intelligence and reconnaissance satellites and the development of sophisticated counterspace weapons. Space.com reports: "Frankly, China is moving at a breathtaking speed. Since 2018, China has more than tripled their on-orbit intelligence, surveillance and reconnaissance satellites," Gen. Stephen Whiting, commander of U.S. Space Command, said here on Tuesday, during a talk at the 39th Space Symposium. "And with these systems, they've built a kill web over the Pacific Ocean to find, fix, track and, yes, target United States and allied military capabilities," he added. And that's not all. China has also "built a range of counterspace weapons, from reversible jamming all the way up to kinetic hit-to-kill direct-ascent and co-orbital ASATs," Whiting said.

Indeed, China demonstrated direct-ascent ASAT, or anti-satellite, weapon technology back in January 2007, when it destroyed one of its defunct weather satellites with a missile. That test was widely decried as irresponsible, for it generated thousands of pieces of debris, many of which are still cluttering up Earth orbit. Such activities show that China is now treating space as a war-fighting domain, Whiting said. And so, he added, is Russia, which has also conducted ASAT tests recently, including a destructive one in November 2021. Russia has also been aggressively building out its orbital architecture; since 2018, the nation has more than doubled its total number of active satellites, according to Whiting. The U.S. government has taken notice of these trends.

"We are at a pivotal moment in history," Troy Meink, principal deputy director of the National Reconnaissance Office, which builds and operates the United States' fleet of spy satellites, said during a different talk on Tuesday here at the symposium. "For the first time in decades, U.S. leadership in space and space technology is being challenged," Meink added. "Our competitors are actively seeking ways to threaten our capabilities, and we see this every day." The U.S. must act if it wishes to beat back this challenge, Meink and Whiting stressed; it cannot rely on the inertia of past success to do the job. For example, Meink highlighted the need to innovate with the nation's reconnaissance satellites, to make them more numerous, more agile and more resilient. U.S. Under Secretary of Defense for Research and Engineering Heidi Shyu also emphasized the importance of increasing resilience, a goal that she said could be achieved by diversifying the nation's space capabilities. "We must assess ways to incorporate radiation-hardened electronics, novel orbits, varied communication pathways, advancements in propulsion technologies and increased cooperation with our allies," Shyu said in another talk on Tuesday at the symposium.

The embargo has lifted for reviews of Humane's AI Pin and the general consensus appears to be that this device isn't ready to usher us into the all-but-inevitable AI future. Starting at $699 with a pricy $24-a-month subscription, the wearable device is designed to incorporate artificial intelligence into everyday scenarios, with the ability to make calls, translate languages, recommend nearby restaurants, and capture photos and videos. "The best description so far is that it's a combination of a wearable Siri button with a camera and built-in projector that beams onto your palm," writes Cherlynn Low via Engadget. While full of potential, the AI Pin creates more problems than it solves and many of the features you'd intuitively expect from it aren't supported at launch.

Here's a roundup of some of the first reviews:

Engadget: The Humane AI Pin is the solution to none of technology's problems
The Verge: Humane AI Pin review: not even close
Wired: Humane Ai Pin Review: Too Clunky, Too Limited
The Washington Post: I've been living with a $699 AI Pin on my chest. You probably shouldn't.
CNET: Humane AI Hands-On: My Life So Far With a Wearable AI Pin

Sierra Space CEO Tom Vice told Yahoo Finance it plans to go public within the next 18 months at a valuation of $5.3 billion. Since being spun out of defense contractor Sierra Nevada Corporation in 2021, the company has "placed its bets on building out the growing space economy, from developing rocket propulsion technology to a commercial space station with Blue Origin." From the report: Its ambitions have fueled the development of its cargo space plane, the Dream Chaser, set to have its inaugural mission to the International Space Station (ISS) in the second half of this year. Built to land on any commercial runway, the plane will lower the barrier to entry into low-earth orbit and open up business opportunities, Vice said. "Since the 1960s, every science experiment or human being that's come back to earth from space, even today, is still landing in a capsule in the ocean," he said. "We think changing and revolutionizing the way that we bring things back from space, both humans and cargo, and landing [the spacecraft] back at a commercial runway will completely accelerate the new space economy."

"We believe that the next big breakthrough products in oncology, longevity, and industrialized components like glass will be produced in low Earth orbit," Vice said, noting that many of those opportunities are likely to come from the development of commercial space stations to replace the decades-old ISS. Sierra Space has partnered with Blue Origin to build out the Orbital Reef, a commercially owned and operated space station, though recent reports have hinted at tension between the corporate partners. "We're transitioning from decades of government-run space stations with just a handful of government-trained astronauts to the full commercialization of low Earth orbit," Vice said. "We think that's going to create, we believe, probably the most profound industrial revolution and grow that space economy well over a trillion dollars by 2040."

Intel on Tuesday unveiled its new "Gaudi 3" AI chip that the company claims is over twice as power-efficient and can run AI models one-and-a-half times faster than Nvidia's H100 GPU. "It also comes in different configurations like a bundle of eight Gaudi 3 chips on one motherboard or a card that can slot into existing systems," adds CNBC. From the report: Intel tested the chip on models like Meta's open-source Llama and the Abu Dhabi-backed Falcon. It said Gaudi 3 can help train or deploy models, including Stable Diffusion or OpenAI's Whisper model for speech recognition. Intel says its chips use less power than Nvidia's. Intel said that the new Gaudi 3 chips would be available to customers in the third quarter, and companies including Dell, Hewlett Packard Enterprise, and Supermicro will build systems with the chips. Intel didn't provide a price range for Gaudi 3.

Gaudi 3 is built on a five nanometer process, a relatively recent manufacturing technique, suggesting that the company is using an outside foundry to manufacture the chips. In addition to designing Gaudi 3, Intel also plans to manufacture AI chips, potentially for outside companies, at a new Ohio factory expected to open in 2027 or 2028, CEO Patrick Gelsinger told reporters last month. "We do expect it to be highly competitive" with Nvidia's latest chips, said Das Kamhout, vice president of Xeon software at Intel, on a call with reporters. "From our competitive pricing, our distinctive open integrated network on chip, we're using industry-standard Ethernet. We believe it's a strong offering."

Google Cloud on Tuesday joined AWS and Azure in announcing its first custom-built Arm processor, dubbed Axion. From a report: Based on Arm's Neoverse 2 designs, Google says its Axion instances offer 30% better performance than other Arm-based instances from competitors like AWS and Microsoft and up to 50% better performance and 60% better energy efficiency than comparable X86-based instances. [...] "Technical documentation, including benchmarking and architecture details, will be available later this year," Google spokesperson Amanda Lam said. Maybe the chips aren't even ready yet? After all, it took Google a while to announce Arm-chips in the cloud, especially considering that Google has long built its in-house TPU AI chips and, more recently, custom Arm-based mobile chips for its Pixel phones. AWS launched its Graviton chips back in 2018.

A jailed trader accused of stealing $110 million on the Mango Markets exchange faces a criminal trial this week that will test the reach of a US crackdown on cryptocurrencies. From a report: Prosecutors charged Avraham Eisenberg with manipulating Mango Markets futures contracts on Oct. 11, 2022, to boost the price of swaps by 1,300% in 20 minutes. He then "borrowed" from the exchange against the inflated value of those contracts, a move the government claims was a theft. Jury selection begins Monday in New York federal court, where groundbreaking crypto cases have played out. FTX co-founder Sam Bankman-Fried was sentenced there last month to 25 years in prison for orchestrating a multibillion-dollar scheme, while Terraform Labs Pte. and co-founder Do Kwon were found liable Friday for fraud in civil trial over the firm's 2022 collapse, which wiped out $40 billion in investor assets.

Eisenberg, a self-described "applied game theorist," claims his actions weren't theft at all. Rather, he says, he legally exploited a weakness in the decentralized finance application. The trial will apparently be the first time a US criminal jury will weigh what type of "DeFi" transactions are legal. In the crypto world, where digital blockchains govern who owns what, the virtual ecosystem is built around the notion that "code is law." It means that if something isn't explicitly forbidden by terms of a crypto platform, then government can't intercede. But prosecutors say those rules can't protect traders against possible criminal charges for market manipulation or fraud.

When Disneyland opened in 1955, its car-themed attraction Autopia "represented the future of what would become America's multilane limited-access highways," according to Wikipedia, " which were still being developed. President Eisenhower had yet to sign the Interstate Highway legislation..."

Wikipedia adds that the cars "generate a moderate level of exhaust from the Honda GX gasoline engines that propel the cars." But that may change, according to a climate-oriented newsletter from the Los Angeles Times: If anyone could get away with defending the toxic odor, it might be Bob Gurr. He designed the original Autopia cars in the mid-1950s, working closely with Walt himself. He's proud of what they built together. But today the 92-year-old Disney legend says the polluting motors need to go. "Get rid of those God-awful gasoline fumes," he told me.

Disney is finally preparing to do just that. In news shared exclusively with The Times ahead of this column's publication — after several weeks of my prodding the company for answers on the future of Autopia — Disney officials revealed that pure gasoline engines are on their way out... "As the industry moves toward alternative fuel sources, we have developed a roadmap to electrify this attraction and are evaluating technology that will enable us to convert from gas engines in the next few years," spokesperson Jessica Good said in an email. Good wouldn't confirm whether that means electric vehicles, or if hybrids are a possibility...

[Gurr] also expressed a grander vision for Tomorrowland as a hub for stories about renewable energy, public transit and other sustainable technologies that will help us create a better tomorrow... [H]ow about using the former Innoventions building, which once displayed futuristic technologies but is now closed to most guests, to showcase solar panels, lithium-ion batteries and other clean energy devices that guests might want in their homes...? Why not switch to electric cooking at the Alien Pizza Planet restaurant, and offer induction stove demos for diners? Maybe start screening some National Geographic films (Disney owns NatGeo) at the largely unused Magic Eye Theater...? Add some infotainment-style signs and voice-overs about the wonders of clean energy and public transit, and boom, you've got a Tomorrowland that should leave kids and their parents excited to help build a safer, happier, more sustainable world...

[Gurr] told me that if he could, he'd tear out everything in Tomorrowland except the Monorail and rebuild it as a version of the public transit-oriented futuristic city that Walt once planned for Florida — only with clean energy at the core of its storytelling... At the very least, he said it's time for an Autopia where guests "don't smell the fumes, don't hear that racket of the little motor going putt-putt-putt."
The newsletter agrees electric vehicles for Autopia are "the obvious starting point" for remodeling Tomorrowland with "a buzz of optimism and futuristic energy." ("Solar-panel shade structures over the line would be great too.") They even add that "it's not that it's my job to make money for Disney, but I'm sure the company could find sponsors for this vision of Tomorrowland. There are plenty of renewable energy companies, electric utilities and environmental groups eager to tout their causes and their credentials."

And it shares this observation from climate scientist and communicator Katharine Hayhoe (paraphrasing another scientist who studies climate communications): "Showing people what climate solutions look like is one of the most effective ways to get them to support action." The newsletter's conclusion? "This is where Tomorrowland could prove especially valuable in the fight to save the planet."


Some additional context... Disney's current CEO once said he was "particuarly proud" of the 270-acre, 50+-megawatt solar facility the company brought online in Orlando." And the Washington Post reports that Disney's plans to electrify Autopia "comes as the park is taking steps to decarbonize as part of an effort to reach a goal of net-zero emissions by 2030."

A professor at Ithaca College runs part of each student's essay through ChatGPT, "asking the AI tool to critique and suggest how to improve the work," reports CNN. (The professor said "The best way to look at AI for grading is as a teaching assistant or research assistant who might do a first pass ... and it does a pretty good job at that.")

And the same professor then requires their class of 15 students to run their draft through ChatGPT to see where they can make improvements, according to the article: Both teachers and students are using the new technology. A report by strategy consultant firm Tyton Partners, sponsored by plagiarismâdetection platform Turnitin, found half of college students used AI tools in Fall 2023. Meanwhile, while fewer faculty members used AI, the percentage grew to 22% of faculty members in the fall of 2023, up from 9% in spring 2023.

Teachers are turning to AI tools and platforms — such as ChatGPT, Writable, Grammarly and EssayGrader — to assist with grading papers, writing feedback, developing lesson plans and creating assignments. They're also using the burgeoning tools to create quizzes, polls, videos and interactives to up the ante" for what's expected in the classroom. Students, on the other hand, are leaning on tools such as ChatGPT and Microsoft CoPilot — which is built into Word, PowerPoint and other products.

But while some schools have formed policies on how students can or can't use AI for schoolwork, many do not have guidelines for teachers. The practice of using AI for writing feedback or grading assignments also raises ethical considerations. And parents and students who are already spending hundreds of thousands of dollars on tuition may wonder if an endless feedback loop of AI-generated and AI-graded content in college is worth the time and money.
A professor of business ethics at the University ofâVirginia "suggested teachers use AI to look at certain metrics — such as structure, language use and grammar — and give a numerical score on those figures," according to the article. ("But teachers should then grade students' work themselves when looking for novelty, creativity and depth of insight.")

But a writer's workshop teacher at the University of Lynchburg in Virginia "also sees uploading a student's work to ChatGPT as a 'huge ethical consideration' and potentially a breach of their intellectual property. AI tools like ChatGPT use such entries to train their algorithms..."

Even the Ithaca professor acknowledged to CNN that "If teachers use it solely to grade, and the students are using it solely to produce a final product, it's not going to work."

Four months ago long-time Slashdot reader Shayde tried restoring a 1986 DEC PDP-11 minicomputer.

But now he's gone even further back in time. Shayde writes: In 1984, Apple II's were at the top of their game in the 8 bit market. A company in New Jersey decided to get in on the action and built an exact clone of the Apple. The Franklin Ace was chip and ROM compatible with the Apple II, and that led to it's downfall.

In this video we resurrect and old Franklin Ace and not only boot ProDOS, but also get the Z80 coprocessor up and running, and relive what coding in Turbo Pascal in the 80s was like.
Why Turbo Pascal? "Some of my earliest professional programming was done in this environment," Shayde says in the video, "and I was itching to play with it again."

Terraform Labs and its founder Do Kwon have been found liable on civil fraud charges on Friday by a jury in Manhattan. The jury agreed with the SEC that the two misled investors before their stablecoin's 2022 collapse shocked crypto markets around the world. Reuters reports: The SEC accused the company and Kwon of misleading investors in 2021 about the stability of TerraUSD, a stablecoin designed to maintain a value of $1. The regulator also accused them of falsely claiming Terraform's blockchain was used in a popular Korean mobile payment app. SEC attorney Laura Meehan said during closing arguments that the platform's success story was "built on lies." "If you swing big and you miss, and you don't tell people that you came up short, that is fraud," Meehan said.

Louis Pellegrino, an attorney for Terraform, told the jury on Friday the SEC's case relied on statements taken out of context and that Terraform and Kwon had been truthful about their products and how they worked, even when they failed. "Terraform is still out there, trying to rebuild and make purchasers whole," he said. The regulator is seeking civil financial penalties and orders barring Kwon and Terraform from the securities industry. Kwon, who was arrested in Montenegro in March 2023, did not attend the trial, which began March 25. Both the U.S. and South Korea, where Kwon is a citizen, have sought his extradition on criminal charges.

Elizabeth Rayne reports via Ars Technica: Led by planetary researcher Lonneke Roelofs of Utrecht University in the Netherlands, a team of scientists has found that the sublimation of CO2 ice could have shaped Martian gullies, which might mean the most recent occurrence of liquid water on Mars may have been further back in time than previously thought. That could also mean the window during which life could have emerged and thrived on Mars was possibly smaller. "Sublimation of CO2 ice, under Martian atmospheric conditions, can fluidize sediment and creates morphologies similar to those observed on Mars," Roelofs and her colleagues said in a study recently published in Communications Earth & Environment. [...]

To recreate a part of the red planet's landscape in a lab, Roelofs built a flume in a special environmental chamber that simulated the atmospheric pressure of Mars. It was steep enough for material to move downward and cold enough for CO2 ice to remain stable. But the team also added warmer adjacent slopes to provide heat for sublimation, which would drive movement of debris. They experimented with both scenarios that might happen on Mars: heat coming from beneath the CO2 ice and warm material being poured on top of it. Both produced the kinds of flows that had been hypothesized. For further evidence that flows driven by sublimation would happen under certain conditions, two further experiments were conducted, one under Earth-like pressures and one without CO2 ice. No flows were produced by either. "For the first time, these experiments provide direct evidence that CO2 sublimation can fluidize, and sustain, granular flows under Martian atmospheric conditions," the researchers said in the study.

Because this experiment showed that gullies and systems like them can be shaped by sublimation and not just liquid water, it raises questions about how long Mars had a sufficient supply of liquid water on the surface for any organisms (if they existed at all) to survive. Its period of habitability might have been shorter than it was once thought to be. Does this mean nothing ever lived on Mars? Not necessarily, but Roelofs' findings could influence how we see planetary habitability in the future.

An anonymous reader shares a report: Amazon has built one of the world's most efficient delivery systems. Yet people regularly ship junk back to sellers and claim they are returns, often with little to no penalty, merchants say. Amazon has long believed in a system based on pleasing customers above all, including easy returns, but that ethos has hurt the merchants who make up most of its online sales.

Return theft represents one sore point in what has become an often contentious relationship between Amazon and its independent sellers. The Federal Trade Commission's continuing lawsuit against the retail giant deals in part with how the company treats its sellers. Amazon is also facing new competition for its merchants from other e-commerce firms.

The National Retail Federation says return fraud has become a "major issue for our industry." About 13.7% of returns in 2023 were fraudulent, accounting for $101 billion in overall losses for retailers, the federation said. As more consumers have adopted online shopping, return theft has become prevalent and Amazon hasn't done enough to stop it, sellers said.

Isaac Schultz reports via Gizmodo: Nine years and 3.2 billion pixels later, it is complete: the LSST Camera stands as the largest digital camera ever built for astronomy and will serve as the centerpiece of the Vera Rubin Observatory, poised to begin its exploration of the southern skies. The Rubin Observatory's key goal is the 10-year Legacy Survey of Space and Time (LSST), a sweeping, near-constant observation of space. This endeavor will yield 60 petabytes of data on the composition of the universe, the nature and distribution of dark matter, dark energy and the expansion of the universe, the formation of our galaxy, our intimate little solar system, and more. The camera will use its 5.1-foot-wide optical lens to take a 15-second exposure of the sky every 20 seconds, automatically changing filters to view light in every wavelength from near-ultraviolet to the near-infrared. Its constant monitoring of the skies will eventually amount to a timelapse of the heavens; it will highlight fleeting events for other scientists to train their telescopes on, and monitor changes in the southern sky.

To do this, the team needed a Rolls Royce of a digital camera. Mind you, the camera actually cost many million times that of an actual Royce Royce, and at 6,200 pounds (2,812 kilograms), it weighs a lot more than a fancy car. Each of the 21 rafts that makes up the camera's focal plane is the price of a Maserati, and are worth every penny if they collect the sort of data scientists expect them to. "I'm personally most excited to study the expansion of the Universe using gravitational lenses to better understand Dark Energy," said Aaron Roodman, a physicist at SLAC and lead on the camera program, in an email to Gizmodo. "That means two things: 1) measuring the brightness in all six of our filters of literally billions of galaxies and very carefully measuring their shape, which has been subtly altered by the bending of light by matter, and 2) discovering and studying very special objects where a distant quasar is almost perfectly lined up with a more nearby galaxy."

Speaking through a SLAC release, Rodman said the camera's images could "resolve a golf ball from around 15 miles away, while covering a swath of the sky seven times wider than the full moon." The first images from the Rubin Observatory are slated to be publicly released in March 2025, which feels like a long way away. But several important agenda items still need to happen. For one, the SLAC team has to ship the LSST camera safely to Chile from its current lodgings in northern California. (Don't worry -- they've made a test run of the journey.) Then, the observatory's mirrors need to be readied for testing and the observatory's dome has to be completed, among some other tasks. But whenever all that is complete, the legacy survey will launch into a decade's worth of scientific discovery. Rubin Observatory estimates suggest that LSST could "increase the number of known objects by a factor of 10," according to a SLAC release.

Lindsay Clark reports via The Register: Analytics platform Databricks has launched an open source foundational large language model, hoping enterprises will opt to use its tools to jump on the LLM bandwagon. The biz, founded around Apache Spark, published a slew of benchmarks claiming its general-purpose LLM -- dubbed DBRX -- beat open source rivals on language understanding, programming, and math. The developer also claimed it beat OpenAI's proprietary GPT-3.5 across the same measures.

DBRX was developed by Mosaic AI, which Databricks acquired for $1.3 billion, and trained on Nvidia DGX Cloud. Databricks claims it optimized DBRX for efficiency with what it calls a mixture-of-experts (MoE) architecture â" where multiple expert networks or learners divide up a problem. Databricks explained that the model possesses 132 billion parameters, but only 36 billion are active on any one input. Joel Minnick, Databricks marketing vice president, told The Register: "That is a big reason why the model is able to run as efficiently as it does, but also runs blazingly fast. In practical terms, if you use any kind of major chatbots that are out there today, you're probably used to waiting and watching the answer get generated. With DBRX it is near instantaneous."

But the performance of the model itself is not the point for Databricks. The biz is, after all, making DBRX available for free on GitHub and Hugging Face. Databricks is hoping customers use the model as the basis for their own LLMs. If that happens it might improve customer chatbots or internal question answering, while also showing how DBRX was built using Databricks's proprietary tools. Databricks put together the dataset from which DBRX was developed using Apache Spark and Databricks notebooks for data processing, Unity Catalog for data management and governance, and MLflow for experiment tracking.