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Hier — 2 décembre 2024Flux principal

Bluesky's Open API Means Anyone Can Scrape Your Data for AI Training. It's All Public

Par : EditorDavid
2 décembre 2024 à 12:34
Bluesky says it will never train generative AI on its users' data. But despite that, "one million public Bluesky posts — complete with identifying user information — were crawled and then uploaded to AI company Hugging Face," reports Mashable (citing an article by 404 Media). "Shortly after the article's publication, the dataset was removed from Hugging Face," the article notes, with the scraper at Hugging Face posting an apology. "While I wanted to support tool development for the platform, I recognize this approach violated principles of transparency and consent in data collection. I apologize for this mistake." But TechCrunch noted the incident's real lesson. "Bluesky's open API means anyone can scrape your data for AI training," calling it a timely reminder that everything you post on Bluesky is public. Bluesky might not be training AI systems on user content as other social networks are doing, but there's little stopping third parties from doing so... Bluesky said that it's looking at ways to enable users to communicate their consent preferences externally, [but] the company posted: "Bluesky won't be able to enforce this consent outside of our systems. It will be up to outside developers to respect these settings. We're having ongoing conversations with engineers & lawyers and we hope to have more updates to share on this shortly!" Mashable notes Bluesky's response to 404Media — that Bluesky is like a website, and "Just as robots.txt files don't always prevent outside companies from crawling those sites, the same applies here." So "While many commentators said that data collection should be opt in, others argued that Bluesky data is publicly available anyway and so the dataset is fair use," according to SiliconRepublic.com.

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Exxon Lobbyist Investigated Over 'Hack-and-Leak' of Environmentalist Emails

Par : EditorDavid
2 décembre 2024 à 08:34
America's FBI "has been investigating a longtime Exxon Mobil consultant," reports Reuters, "over the contractor's alleged role in a hack-and-leak operation that targeted hundreds of the oil company's biggest critics, according to three people familiar with the matter." The operation involved mercenary hackers who successfully breached the email accounts of environmental activists and others, the sources told Reuters. The scheme allegedly began in late 2015, when U.S. authorities contend that the names of the hacking targets were compiled by the DCI Group, a public affairs and lobbying company working for Exxon at the time, one of the sources said. DCI provided the names to an Israeli private detective, who then outsourced the hacking, according to the source. In an effort to push a narrative that Exxon was the target of a political vendetta aimed at destroying its business, some of the stolen material was subsequently leaked to the media by DCI, Reuters determined. The Federal Bureau of Investigation found that DCI shared the information with Exxon before leaking it, the source said. Some environmental activists interviewed by Reuters say the hacking operation disrupted preparations for lawsuits by cities and state attorneys general against Exxon and other energy companies... The stolen material continues to be used today to counter litigation claiming the oil giant misled the public and its investors about the risks of climate change... The investigation into the hack-and-leak operation comes amid growing concern among law enforcement agencies worldwide about how such cyberespionage schemes threaten to taint judicial proceedings. The FBI has been investigating the broader use of mercenary hackers to tamper with lawsuits since early 2018, Reuters has previously reported. The Israeli private detective hired by DCI, Amit Forlit, was arrested this year at London's Heathrow Airport and is fighting extradition to the United States on charges of hacking and wire fraud... Federal prosecutors have secured a related conviction: that of Forlit's former business associate, private investigator Aviram Azari. Azari pleaded guilty in 2022 to wire fraud, conspiracy to commit hacking and aggravated identity theft, which included targeting the environmental activists.

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For Moon Missions, Researchers Test a 3D-Printable, Waterless Concrete

Par : EditorDavid
2 décembre 2024 à 06:20
"If NASA establishes a permanent presence on the moon, its astronauts' homes could be made of a new 3D-printable, waterless concrete," writes MIT Technology Review. "Someday, so might yours. "By accelerating the curing process for more rapid construction, this sulfur-based compound could become just as applicable on our home terrain as it is on lunar soil..." Building a home base on the moon will demand a steep supply of moon-based infrastructure: launch pads, shelter, and radiation blockers. But shipping Earth-based concrete to the lunar surface bears a hefty price tag. Sending just 1 kilogram (2.2 pounds) of material to the moon costs roughly $1.2 million, says Ali Kazemian, a robotic construction researcher at Louisiana State University (LSU). Instead, NASA hopes to create new materials from lunar soil and eventually adapt the same techniques for building on Mars. Traditional concrete requires large amounts of water, a commodity that will be in short supply on the moon and critically important for life support or scientific research, according to the American Society of Civil Engineers. While prior NASA projects have tested compounds that could be used to make "lunarcrete," they're still working to craft the right waterless material. So LSU researchers are refining the formula, developing a new cement based on sulfur, which they heat until it's molten to bind material without the need for water. In recent work, the team mixed their waterless cement with simulated lunar and Martian soil to create a 3D-printable concrete, which they used to assemble walls and beams. "We need automated construction, and NASA thinks 3D printing is one of the few viable technologies for building lunar infrastructure," says Kazemian. Beyond circumventing the need for water, the cement can handle wider temperature extremes and cures faster than traditional methods. The group used a pre-made powder for their experiments, but on the moon and Mars, astronauts might extract sulfur from surface soil. Kazemian and his colleagues recently transferred the technology to NASA's Marshall Space Flight Center for further testing...

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As Space Traffic Crowds Earth Orbit: a Push for Global Cooperation

Par : EditorDavid
2 décembre 2024 à 04:17
An anonymous reader shared this report from Reuters: The rapid increase in satellites and space junk will make low Earth orbit unusable unless companies and countries cooperate and share the data needed to manage that most accessible region of space, experts and industry insiders said. A United Nations panel on space traffic coordination in late October determined that urgent action was necessary and called for a comprehensive shared database of orbital objects as well as an international framework to track and manage them. More than 14,000 satellites including some 3,500 inactive surround the globe in low Earth orbit, showed data from U.S.-based Slingshot Aerospace. Alongside those are about 120 million pieces of debris from launches, collisions and wear-and-tear of which only a few thousand are large enough to track... [T]here is no centralised system that all space-faring nations can leverage and even persuading them to use such a system has many obstacles. Whereas some countries are willing to share data, others fear compromising security, particularly as satellites are often dual-use and include defence purposes. Moreover, enterprises are keen to guard commercial secrets. In the meantime, the mess multiplies. A Chinese rocket stage exploded in August, adding thousands of fragments of debris to low Earth orbit. In June, a defunct Russian satellite exploded, scattering thousands of shards which forced astronauts on the International Space Station to take shelter for an hour... Projections point to tens of thousands more satellites entering orbit in the coming years. The potential financial risk of collisions is likely to be $556 million over five years, based on a modelled scenario with a 3.13% annual collision probability and $111 million in yearly damages, said Montreal-based NorthStar Earth & Space... [Aarti Holla-Maini, director of the U.N . Office for Outer Space Affairs], said the October panel aimed to bring together public- and private-sector experts to outline steps needed to start work on coordination. It will present its findings at a committee meeting next year. Global cooperation is essential to developing enforceable rules akin to those used by the International Civil Aviation Organization for air traffic, industry experts told Reuters. Such effort would involve the use of existing tools, such as databases, telescopes, radars and other sensors to track objects while improving coverage, early detection and data precision. Yet geopolitical tension and reluctance to share data with nations deemed unfriendly as well as commercial concerns over protecting proprietary information and competitive advantages remain significant barriers. That leaves operators of orbital equipment relying on informal or semi-formal methods of avoiding collisions, such as drawing on data from the U.S. Space Force or groups like the Space Data Association. However, this can involve issues such as accountability and inconsistent data standards. "The top challenges are speed — as consensus-building takes time — and trust," Holla-Maini said. "Some countries simply can't communicate with others, but the U.N. can facilitate this process. Speed is our biggest enemy, but there's no alternative. It must be done." Data from Slingshot Aerospace shows a 17% rise in close approaches per satellite over the past year, according to the article. (It adds that SpaceX data "showed Starlink satellites performed nearly 50,000 collision-avoidance manoeuvres in the first half of 2024, about double the previous six months...) The European Space Agency, which has fewer spacecraft than SpaceX, said in 2021 its manoeuvres have increased to three or four times per craft versus a historical average of one."

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Scientists Have Finally Found the Gene That Gives Cats Orange Fur

Par : EditorDavid
2 décembre 2024 à 01:34
Slashdot reader sciencehabit writes: Most orange cats are boys, a quirk of feline genetics that also explains why almost all calicos and tortoiseshells are girls. Scientists curious about those sex differences—or perhaps just cat lovers—have spent more than 60 years unsuccessfully seeking the gene that causes orange fur and the striking patchwork of colors in calicos and tortoiseshells. Now, two teams have independently found the long-awaited mutation and discovered a protein that influences hair color in a way never seen before in any animal... Using skin samples collected from various cats, the researchers were able to hone in a mutation on the X chromosome that impacts how much of a protein a gene called Arhgap36 produces. Increasing the amount of the Arhgap36 in pigment producing cells called melanocytes activates a molecular pathway that produces a light red pigment. "Scanning a database of 188 cat genomes, Barsh's team found every single orange, calico, and tortoiseshell cat had the exact same mutation," writes Science magazine. "The group reports the discovery this month on the preprint server bioRxiv. A separate study, also posted to bioRxiv this month, confirms these findings... They also found that skin from calico cats had more Arghap36 RNA in orange regions than in brown or black regions." Arhgap36's inactivation pattern in calicos and tortoiseshells is typical of a gene on the X chromosome, says Carolyn Brown [a University of British Columbia geneticist who was not involved in either study], but it's unusual that a deletion mutation would make a gene more active, not less. "There is probably something special about cats." Experts are thrilled by the two studies. "It's a long-awaited gene," says Leslie Lyons, a feline geneticist at the University of Missouri. The discovery of a new molecular pathway for hair color was unexpected, she says, but she's not surprised how complex the interactions seem to be. "No gene ever stands by itself." Lyons would like to know where and when the mutation first appeared: There is some evidence, she says, that certain mummified Egyptian cats were orange. Research into cat color has revealed all kinds of phenomena, she says, including how the environment influences gene expression. "Everything you need to know about genetics you can learn from your cat."

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Oxford's Word of the Year: 'Brain Rot'

Par : EditorDavid
2 décembre 2024 à 00:06
"Are you spending hours scrolling mindlessly on Instagram reels and TikTok?" asks the BBC. "If so, you might be suffering from brain rot, which has become the Oxford word of the year." It is a term that captures concerns about the impact of consuming excessive amounts of low-quality online content, especially on social media. The word's usage saw an increase of 230% in its frequency from 2023 to 2024. Psychologist and Oxford University Professor, Andrew Przybylski says the popularity of the word is a "symptom of the time we're living in". Brain rot beat five other shortlisted words including demure, Romantasy and dynamic pricing... [And "slop".] The first recorded use of brain rot dates much before the creation of the internet — it was written down in 1854 by Henry David Thoreau in his book Walden. He criticises society's tendency to devalue complex ideas and how this is part of a general decline in mental and intellectual effort. It leads him to ask: "While England endeavours to cure the potato rot, will not any endeavour to cure the brain-rot — which prevails so much more widely and fatally?" The word initially gained traction on social media among Gen Z and Gen Alpha communities, but it's now being used in the mainstream as a way to describe low-quality, low-value content found on social media. Prof Przybylski says "there's no evidence of brain rot actually being a thing. Instead it describes our dissatisfaction with the online world and it's a word that we can use to bundle our anxieties that we have around social media." The New York Times points out that Oxford's past "word of the year" selections included "podcast" and "selfie" [Casper Grathwohl, the president of Oxford Languages, the company's dictionary division] noted the finalists were heavy on old-fashioned words that young people had repurposed in semi-ironic ways — the linguistic equivalent, he said, of "bell-bottoms coming back into fashion...." "Slop" has undergone a similar update. There was a spike of more than 300 percent over the past year in references not to pig feed, but to "art, writing or other content generated using artificial intelligence, shared and distributed online in an indiscriminate or intrusive way, and characterized as being of low quality, inauthentic or inaccurate," according to Oxford. Like "brain rot," it "represents the underbelly of today's linguistic churn," Grathwohl said. "There's a sense that we are drowning in mediocre experiences as digital lives get clogged."

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UN Plastic Treaty Talks Collapse Without a Deal

Par : EditorDavid
1 décembre 2024 à 22:29
United Nations members gathered this week in Busan, South Korea to negotiate the first treaty reducing plastic pollution. But Politico reports that "talks collapsed late Sunday after negotiators failed to resolve their differences and agree on a global plastic treaty. At the heart of the disagreement was a refusal by oil-rich nations led by Saudi Arabia to accept a deal that put limits on plastic production... Throughout the two years of talks, oil-rich and plastic-producing states had repeatedly clashed with nations that wanted to reduce plastic production to solve a worsening plastic pollution crisis. Many went to Busan hopeful differences would be put aside in the name of combatting a common global threat. But in the end this proved too optimistic... The EU, alongside more than 100 other countries that included the U.K., on Thursday had backed a new proposal spearheaded by Panama pushing for a global target to reduce plastic production to "sustainable levels", drawing a clear battle line for the talks. But three negotiators from countries in the High Ambition Coalition to End Plastic Pollution — granted anonymity to discuss closed-door talks — told POLITICO Saudi Arabia had coordinated a push from oil-rich and plastic-producing countries to block any proposals for the treaty that threatened to reduce plastic production. The vast majority of plastic is made from oil or natural gas... Along with disagreements over plastic production, countries were also unable to agree on whether and how to target particularly polluting plastic products, and how to finance the treaty. Two of the "high-ambition" negotiators referenced above suggested the talks were doomed to fail from the beginning, arguing that there was never going to be enough time given the scope of the mandate. "I think the pressure on us to deliver that in 18 months ... was kind of stupid then, and it's still stupid now," said one. "Usually these processes take a number of years — beyond what we are doing...." But many observers and some delegates said the summit's collapse demonstrated the failures of consensus-based environmental multilateralism, arguing that requiring all countries to agree by consensus gave reluctant nations too much veto power. NGOs like the Center for International Environmental Law hope this week's failed talks will serve as a lesson for future U.N. talks... The date and time of the next round of talks is yet to be announced. Greenpeace issued a statement saying "over 100 Member States, representing billions of people, rejected a toothless deal that would have accomplished nothing, and stood before the world committing to an ambitious treaty." And they argued that the message is clear. "Ambitious countries must not allow the fossil fuel and petrochemical industries, backed by a small minority of countries, to prevent the will of the vast majority. A strong agreement that protects people and the planet is our only option."

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Bluesky Passes Threads for Active Website Users, But Confronts 'Scammers and Impersonators'

Par : EditorDavid
1 décembre 2024 à 20:58
Bluesky now has more active website users than Threads in the U.S., according to a graph from the Financial Times. And though Threads still leads in app usage, "Prior to November 5 Threads had five times more daily active users in the U.S. than Bluesky... Now, Threads is only 1.5 times larger than its rival, Similarweb said." But "the influx of new users has opened up new opportunities for scammers and impersonators," Engadget reported this week: A recent analysis by Alexios Mantzarlis, director of the Security Trust and Safety Initiative at Cornell Tech found that 44 percent of the top 100 most-followed accounts on Bluesky had at least one "doppelganger," with most looking like "cheap knock-offs of the bigger account, down to the same bio and profile picture," Mantzarlis wrote in his newsletter Faked Up. The article highlighted issues with Bluesky's loose account verification policies. And then, Bluesky announced a new change-of-policy Friday. Engadget reports: The Bluesky Safety account said that the social media service is removing accounts that are impersonating other people and those squatting on handles... Bluesky now requires parody, satire or fan accounts to label themselves as such in both their handles and their bio. If they don't, or if they only indicate the nature of their account in one of those elements, then they'll be treated as an impersonator and will be removed from the platform. Bluesky now explicitly prohibits identity churning, as well. Accounts that start as impersonators with the purpose of gaining new users, and who then switch to a different identity in an attempt to circumvent the ban, will still get booted off the app. Finally, it says it's exploring "additional options to enhance account verification," though they're not quite ready for rollout. Bluesky says they've "quadrupled the size of our moderation team, in part to action impersonation reports more quickly. We still have a large backlog of moderation reports due to the influx of new users as we shared previously, though we are making progress." And in addition, "We are working behind the scenes to help many organizations and high-profile individuals set up their verified domain handles." And there's another problem. "The EU's executive arm on Monday said Bluesky didn't provide information it was required to share under the bloc's Digital Services Act," reports Bloomberg. Bluesky responded that it's working to comply, " consulting with its lawyer to follow the EU's information disclosure rules, a Bluesky spokesperson wrote on Tuesday in an email." "All platforms in the EU have to have a dedicated page on their websites where it says how many user numbers they have in the EU and where they are legally established," Thomas Regnier, the commission's spokesperson on digital matters, told reporters. "This is not the case with Bluesky, so this is not followed...." Under the DSA, platforms with more than 45 million users in the bloc qualify as "very large online platforms" and need to follow stricter content moderation rules under the commission's supervision. Breaches can result in fines of up to 6% of their global annual sales... Smaller platforms are still required to comply with the law, but are regulated by the EU country where they have a legal presence. That's so far unclear in the case of Bluesky, which was created expressly to avoid a centralized ownership structure. The commission asked EU member countries' national authorities to investigate "and see if they can find any trace of Bluesky" in their jurisdictions, Regnier said

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Greg Kroah-Hartman Sees 'Tipping Point' for Rust Drivers in Linux Kernel

Par : EditorDavid
1 décembre 2024 à 19:34
Greg Kroah-Hartman noted some coming changes in Linux 6.13 will make it possible to create "way more" Rust-based kernel drivers. "The veteran kernel developer believes we're at a tipping point of seeing more upstream Rust drivers ahead," reports Phoronix: These Rust char/misc changes are on top of the main Rust pull for Linux 6.13 that brought 3k lines of code for providing more Rust infrastructure. Linux 6.13 separately is also bringing Rust file abstractions. "Sorry for doing this at the end of the merge window," Greg Kroah-Hartman wrote in the pull request, explaining that "conference and holiday travel got in the way on my side (hence the 5am pull request emails...)" Loads of things in here... — Rust misc driver bindings and other rust changes to make misc drivers actually possible. I think this is the tipping point, expect to see way more rust drivers going forward now that these bindings are present. Next merge window hopefully we will have pci and platform drivers working, which will fully enable almost all driver subsystems to start accepting (or at least getting) rust drivers. This is the end result of a lot of work from a lot of people, congrats to all of them for getting this far, you've proved many of us wrong in the best way possible, working code :)

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CJIT - C, Just In Time!

Par : EditorDavid
1 décembre 2024 à 18:34
Long-time Slashdot reader jaromil writes: As a fun project, we hacked together a C interpreter (based on Tiny C Compiler) that compiles C code in-memory and runs it live. CJIT today is a 2MB executable that can do a lot, including call functions from any installed library on Linux, Windows, and MacOSX. Slashdot reader oliwer points out "they are also including a REPL, which could be interesting." And the CJIT web page promises there's "no EULA to sign, no IDE to install... 100% Free and open source!" It also says the project was inspired by Terry Davis (TempleOS) and Fabrice Bellard (Tiny C Compiler).

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Leaked Documents Show What Phones Secretive Tech 'Graykey' Can Unlock

Par : EditorDavid
1 décembre 2024 à 17:34
Primarily used by law enforcement, Graykey unlocks mobile devices to extract data from both Android and iOS systems, according to the blog AppleInsider, "though its effectiveness varies depending on the specific hardware and software involved." But while its capabilities are rarely disclosed, "a leak of some Grayshift's internal documents was recently reported on by 404 Media." According to the data, Graykey can only perform "partial" data retrieval from iPhones running iOS 18 and iOS 18.0.1. These versions were released in September and early October, respectively. A partial extraction likely includes unencrypted files and metadata, such as folder structures and file sizes, according to past reports. Notably, Graykey struggles with beta versions of iOS 18.1. Under the latest update, the tool fails to extract any data, as per the documents. Meanwhile, Graykey's performance with Android phones varies, largely due to the diversity of devices and manufacturers. On Google's Pixel lineup, Graykey can only partially access data from the latest Pixel 9 when in an "After First Unlock" (AFU) state — where the phone has been unlocked at least once since being powered on. Thanks to long-time Slashdot reader AmiMoJo for sharing the article.

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'Hour of Code' Cartoon Includes a Shout-Out to AI

Par : EditorDavid
1 décembre 2024 à 16:34
Nonprofit Code.org has posted this year's cartoon for "Hour of Code," their annual learn-to-code event for schoolchildren. Long-time Slashdot reader theodp notes its animated pigeon gives a shout-out to the AI that could ultimately replace programmers: In an Instagram post introducing the video, Code.org explains: "Bartlett the Pigeon just learned how to code and now thinks he's smarter than us. Honestly...he might be. Meet the face (and feathers) of this year's #HourOfCode." In the video, Bartlett wows a social media influencer with his coding skills. "Is this pigeon typing code?" she asks in disbelief. "I'm going to film this for my socials!" Bartlett goes on to explain that the song he remixes with coding blocks — Aloe Blacc's "I Need a Dollar" — could have instead been generated by simply using AI, which he says is "like having a personal DJ assistant who never misses a beat!" Interestingly, Blacc noted in a 2011 interview that he wrote "I Need a Dollar" after being made redundant in his career as a business consultant by Ernst & Young. That multinational company is now advising global business leaders on how they can harness the power of GenAI "to achieve more with fewer resources" by disrupting professions — like programming — that "involve a high degree of repetitive and data-driven tasks that AI can automate."

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Spacecraft Face 'Sophisticated and Dangerous' Cybersecurity Threats

Par : EditorDavid
1 décembre 2024 à 15:34
"Spacecraft, satellites, and space-based systems all face cybersecurity threats that are becoming increasingly sophisticated and dangerous," reports CNBC. "With interconnected technologies controlling everything from navigation to anti-ballistic missiles, a security breach could have catastrophic consequences." Critical space infrastructure is susceptible to threats across three key segments: in space, on the ground segment and within the communication links between the two. A break in one can be a cascading failure for all, said Wayne Lonstein, co-founder and CEO at VFT Solutions, and co-author of Cyber-Human Systems, Space Technologies, and Threats. "In many ways, the threats to critical infrastructure on Earth can cause vulnerabilities in space," Lonstein said. "Internet, power, spoofing and so many other vectors that can cause havoc in space," he added. The integration of artificial intelligence into space projects has heightened the risk of sophisticated cyber attacks orchestrated by state actors and individual hackers. AI integration into space exploration allows more decision-making with less human oversight. For example, NASA is using AI to target scientific specimens for planetary rovers. However, reduced human oversight could make these missions more prone to unexplained and potentially calamitous cyberattacks, said Sylvester Kaczmarek, chief technology officer at OrbiSky Systems, which specializes in the integration of AI, robotics, cybersecurity, and edge computing in aerospace applications. Data poisoning, where attackers feed corrupted data to AI models, is one example of what could go wrong, Kaczmarek said. Another threat, he said, is model inversion, where adversaries reverse-engineer AI models to extract sensitive information, potentially compromising mission integrity. If compromised, AI systems could be used to interfere with or take control of strategically important national space missions... The U.S. government is tightening up the integrity and security of AI systems in space. The 2023 Cyberspace Solarium Commission report stressed the importance of designating outer space as a critical infrastructure sector, urging enhanced cybersecurity protocols for satellite operators... The rivalry between the U.S. and China includes the new battleground of space. As both nations ramp up their space ambitions and militarized capabilities beyond Earth's atmosphere, the threat of cyberattacks targeting critical orbital assets has become an increasingly pressing concern... Space-based systems increasingly support critical infrastructure back on Earth, and any cyberattacks on these systems could undermine national security and economic interests.

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Utilities Are Trying Enormous 'Flow' Batteries Big Enough to Oust Coal Power Plants

Par : EditorDavid
1 décembre 2024 à 12:34
To help replace power plants, Japan's northernmost island, Hokkaido, "is turning to a new generation of batteries designed to stockpile massive amounts of energy," reports the Washington Post. "The Hokkaido Electric Power Network (HEPCO Network) is deploying flow batteries, an emerging kind of battery that stores energy in hulking tanks of metallic liquid." [F]low batteries are making their debut in big real-world projects. Sumitomo Electric, the company that built the Hokkaido plant, has also built flow batteries in Taiwan, Belgium, Australia, Morocco and California. Hokkaido's flow battery farm was the biggest in the world when it opened in April 2022 — a record that lasted just a month before China built one that is eight times bigger and can deliver as much energy as an average U.S. natural gas plant. "It looks like flow batteries are finally about to take off with interest from China," said Michael Taylor, an energy analyst at the International Renewable Energy Agency, an international group that studies and promotes green energy. "When China starts to get comfortable with a technology and sees it working, then they will very quickly scale their manufacturing base if they think they can drive down the costs, which they usually can...." Lithium-ion batteries are perfect for smartphones because they're lightweight and fit in small spaces, even if they don't last long and have to be replaced frequently. Utilities have a different set of priorities: They need to store millions of times more energy, and they have much more room to work with. "If you think about utility-scale stationary applications, maybe you don't need lithium-ion batteries. You can use another one that is cheaper and can provide the services that you want like, for example, vanadium flow batteries," said Francisco Boshell, a researcher at the International Renewable Energy Agency... Flow batteries are designed to tap giant tanks that can store a lot of energy for a long time. To boost their storage capacity, all you have to do is build a bigger tank and add more vanadium. That's a big advantage: By contrast, there's no easy way to adjust the storage capacity of a lithium-ion battery — if you want more storage, you have to build a whole new battery... One major barrier to building more of these battery farms is finding enough vanadium. Three-quarters of the world's supply comes as a by-product from 10 steel mills in China and Russia, according to Kara Rodby [a battery analyst at the investment firm Volta Energy Technologies] who got her PhD at the Massachusetts Institute of Technology studying the design and market for flow batteries. Australia, South Africa and the United States also produce vanadium, but in much smaller quantities. Mines that have been proposed could boost supply. And some flow battery start-ups are trying to sidestep the vanadium problem entirely by using different materials that are easier to buy. The other hurdle is their up-front cost. Vanadium flow batteries are at least twice as expensive to build as lithium-ion batteries, Rodby said, and banks are hesitant to lend money to fund an unfamiliar technology. But experts say flow batteries can be cheaper in the long run because they're easier to maintain and last longer. A lithium-ion battery might have to be replaced after 10 years, but Rodby says flow batteries can last much longer. "There really is no finite lifetime for a flow battery in the way there is for lithium-ion," Rodby said. Here's an interesting statistic from the article. "Over the next six years, utilities will have to build 35 times as many batteries as there are today to soak up all extra renewable energy that will come online, according to the International Energy Agency."

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What 'The Oregon Trail' Co-Creator Thinks of Apple's Plans for a Movie

Par : EditorDavid
1 décembre 2024 à 08:34
It's one of the most successful — and oldest — computer games of all-time. This week CBS News Minnesota interviewed Bill Heinemann, who in 1971 co-created "The Oregon Trail" as an educational video game simulating pioneers travelling west. "It's surprising and gratifying and humbling, in a way, that a little thing that I spent two weeks on has become a worldwide phenomenon," Heinemann said... The game's become known for the many ways players can die, including by dysentery, but Heinemann's favorite was death by snake bite. "It only happened once every several hundred times, and so people could've played it for months and all of a sudden, 'What? I got bit by a snake and died? This has never happened to me before!'" he said. The game has been the subject of numerous satirical articles by McSweeney's. And long-time Slashdot reader whois_drek points out that a sketch comedy group also based a movie on the videogame in 2023. So how does the game's co-creator feel about Apple's plans to film a new big-budget movie based on the game? "Surprising to me how popular it's become and how long the interest in it has been around," Heinemann said. "And this is just the next step I guess." He won't be making any money off the movie. In fact, Heinemann's never seen a dime from the iconic game. He and his two co-creators, Rawitsch and Paul Dillenberger, turned it over to the Minnesota Educational Computing Consortium shortly after they invented it. Heinemann says it doesn't bother him. "I didn't do it for money," he said. "I did it for just the love of the game and the love of teaching." Thanks to Slashdot reader quonset for sharing the news.

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Despite Clean Energy Use, Global Warming is Still Projected to Continue

Par : EditorDavid
1 décembre 2024 à 04:34
The world's use of clean energy "is rapidly growing", reports the Washington Post, "but not fast enough to keep temperatures in check..." Many experts say it will be the economics of clean energy that defines the future of the planet — and how developing countries choose to meet their growing electricity demands. "What happens in emerging and developing economies in the next decade in some sense is the whole ballgame," said Jason Bordoff, founding director of the Center for Global Energy Policy at Columbia University. Global greenhouse gas emissions could peak as soon as next year, according to the International Energy Agency, but are not on course to drop sharply enough to contain warming. The world would have to cut its emissions roughly in half by 2035 to meet the 1.5 C target, scientists warn, in part because carbon dioxide stays in the atmosphere for centuries. Instead, the U.N. projects that nations' current policies will lead to 3.1 C of warming by 2100, or as little as 2.6 C if the strongest pledges are kept. This would represent substantial progress from when the Paris agreement was adopted, when scientists expected a 4 C (7.2 F) rise in temperatures by century's end... Still, the U.N. Intergovernmental Panel on Climate Change predicts "dangerous and widespread disruption" on the current path. The Greenland ice sheet might tip into irreversible collapse, according to the IPCC, threatening cities from New York to Shanghai, while extreme heat and humidity could make large swaths of the world effectively uninhabitable. Scientists also expect a growing toll of disease, crop failures and weather disasters. It would likely take thousands of years for Greenland's ice to completely vanish, but other impacts — like the death of coral reefs worldwide and month-long heat waves — could come in a matter of decades. If countries wish to avoid these consequences, they will have to spend vast sums on adaptation. From now through 2030, poor nations will need up to $387 billion per year to adapt to mounting climate disasters, according to a recent U.N. report... [Much of the progress on curbing emissions] has come from the United States' switch from coal to natural gas and renewables, and the European Union's rapid embrace of wind and solar power... But the demand for power is also rising, complicating these efforts. According to a recent report from the International Energy Agency, countries are expected to add electricity demand equivalent to the entire nation of Japan every year — thanks to the growth of EVs, the rapid build-out of AI data centers, and a surge in a need for air conditioning in developing countries. That growth in demand means that even as clean energy is added to the grid, fossil fuel use hasn't decreased. And unless countries close coal and gas plants and shut down oil drilling, emissions won't start to come down. "Two things can both be true: Clean energy is breaking almost every record you can imagine," Bordoff said. "And oil use is going up, and gas use is going up, and coal use is going up."

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OpenWRT One Released: First Router Designed Specifically For OpenWrt

Par : EditorDavid
1 décembre 2024 à 02:14
Friday the Software Freedom Conservancy announced the production release of the new OpenWrt One network router — designed specifically for running the Linux-based router OS OpenWrt (a member project of the SFC). "This is the first wireless Internet router designed and built with your software freedom and right to repair in mind. "The OpenWrt One will never be locked down and is forever unbrickable." This device services your needs as its owner and user. Everyone deserves control of their computing. The OpenWrt One takes a great first step toward bringing software rights to your home: you can control your own network with the software of your choice, and ensure your right to change, modify, and repair it as you like. The OpenWrt One demonstrates what's possible when hardware designers and manufacturers prioritize your software right to repair; OpenWrt One exuberantly follows these requirements of the copyleft licenses of Linux and other GPL'd programs. This device provides the fully copyleft-compliant source code release from the start. Device owners have all the rights as intended on Day 1; device owners are encouraged to take full advantage of these rights to improve and repair the software on their OpenWrt One. Priced at US$89 for a complete OpenWrt One with case (or US$68.42 for a caseless One's logic board), it's ready for a wide variety of use cases... This new product has completed full FCC compliance tests; it's confirmed that OpenWrt met all of the FCC compliance requirements. Industry "conventional wisdom" often argues that FCC requirements somehow conflict with the software right to repair. SFC has long argued that's pure FUD. We at SFC and OpenWrt have now proved copyleft compliance, the software right to repair, and FCC requirements are all attainable in one product! You can order an OpenWrt One now! Since today is the traditional day in the USA when folks buy gifts for love ones, we urge you to invest in a wireless router that can last! We do expect that for orders placed today, sellers will deliver by December 22 in most countries... Regardless of where you buy from, for every purchase of a new OpenWrt One, a US$10 donation will go to the OpenWrt earmarked fund at Software Freedom Conservancy. Your purchase not only improves your software right to repair, but also helps OpenWrt and SFC continue to improve the important software and software freedom on which we all rely! LWN.net points out that OpenWrt has also "served as the base on which a lot of network-oriented development (including the bufferbloat-reduction work) has been done." The OpenWrt One was designed to be a functional network router that would serve as a useful tool for the development of OpenWrt itself. To that end, the hope was to create a device that was entirely supported by upstream free software, and which was as unbrickable as it could be... The OpenWrt One comes with a two-core Arm Cortex-A53 processor, 1GB of RAM, and 256MB of NAND flash memory. There is also a separate, read-only 16MB NOR flash array in the device. Normally, the OpenWrt One will boot and run from the NAND flash, but there is a small switch in the back that will cause it to boot from the NOR instead. This is a bricking-resistance feature; should a software load break the device, it can be recovered by booting from NOR and flashing a new image into the NAND array. .. After booting into the new image, the One behaved like any other OpenWrt router... What could be more interesting is seeing this router get into the hands of developers and enthusiasts who will use it to make OpenWrt (and other small-system distributions) better. Long-time Slashdot reader dumfrac writes: The intent to build the device was announced on the OpenWRT forums earlier this year. It is based on MediaTek MT7981B (Filogic 820) SoC and MediaTek MT7976C dual-band WiFi 6 chipset and the board is made by Banana Pi. A poll to select the logo was run in April on the OpenWRT forums, and now the hardware is available for purchase. .

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Oceans Cool the Climate More Than We Thought, Study Finds

Par : EditorDavid
30 novembre 2024 à 23:23
"Polar oceans constitute emission hotspots during the summer," according to a new paper published in the peer-reviewed scientific journal Science Advances. "And including those sea-to-air fluxes in an atmospheric chemistry-climate model "results in a net radiative effect that has far-reaching implications." The research was led by a team of scientists from Spain's Institute of Marine Sciences and the Blas Cabrera Institute of Physical Chemistry, according to an announcement from the UK's University of East Anglia: Researchers have quantified for the first time the global emissions of a sulfur gas produced by marine life, revealing it cools the climate more than previously thought, especially over the Southern Ocean. The study, published in the journal Science Advances, shows that the oceans not only capture and redistribute the sun's heat, but produce gases that make particles with immediate climatic effects, for example through the brightening of clouds that reflect this heat. It broadens the climatic impact of marine sulfur because it adds a new compound, methanethiol, that had previously gone unnoticed. Researchers only detected the gas recently, because it used to be notoriously hard to measure and earlier work focussed on warmer oceans, whereas the polar oceans are the emission hotspots... Their findings represent a major advance on one of the most groundbreaking theories proposed 40 years ago about the role of the ocean in regulating the Earth's climate. This suggested that microscopic plankton living on the surface of the seas produce sulfur in the form of a gas, dimethyl sulphide, that once in the atmosphere, oxidizes and forms small particles called aerosols. Aerosols reflect part of the solar radiation back into space and therefore reduce the heat retained by the Earth. Their cooling effect is magnified when they become involved in making clouds, with an effect opposite to, but of the same magnitude as, that of the well-known warming greenhouse gases, such as carbon dioxide or methane. The researchers argue that this new work improves our understanding of how the climate of the planet is regulated by adding a previously overlooked component and illustrates the crucial importance of sulfur aerosols. They also highlight the magnitude of the impact of human activity on the climate and that the planet will continue to warm if no action is taken. The article includes this quote from one of the study's lead authors (Dr. Charel Wohl from the university's Centre for Ocean and Atmospheric Sciences). "Climate models have greatly overestimated the solar radiation actually reaching the Southern Ocean, largely because they are not capable of correctly simulating clouds. The work done here partially closes the longstanding knowledge gap between models and observations." And the university's announcement argues that "With this discovery, scientists can now represent the climate more accurately in models that are used to make predictions of +1.5 degrees C or +2 degrees C warming, a huge contribution to policy making." Thanks to long-time Slashdot reader schwit1 for sharing the news.

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Bitcoin Heads for Nearly 40% November Gain, Edging Closer to $100,000

Par : EditorDavid
30 novembre 2024 à 21:50
November 5: Bitcoin's price reaches an all-time high of $74,200. November 11: Bitcoin sets a new record of $84,000. November 12: Bitcoin pushes past $90,000. And Friday, CNBC reported: Bitcoin is on pace to post a 38% gain for November, according to Coin Metrics, which would make the month its best since February, when it gained 45% following the launch of spot bitcoin ETFs... Bulls expect bitcoin's price to reach $100,000 by the end of 2024 and potentially double by the end of 2025.

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New Cosmological Model Proposes Dark Matter Production During Pre-Big Bang Inflation

Par : EditorDavid
30 novembre 2024 à 20:50
To explain the origins of dark market, a new model of the universe has been proposed by researchers, reports Phys.org. "Their idea is that dark matter would be produced during a infinitesimally short inflationary phase when the size of the universe quickly expanded exponentially..." Although inflation is mostly accepted by cosmologists as part of the Big Bang picture based on some evidence (though there is meaningful dissent), the driver of inflation is still unknown... [T]o-date research has not considered the possibility that a significant [amount] of dark matter could be produced during the inflationary expansion and not be diluted away. In the paper's WIFI model — Warm Inflation via ultraviolet Freeze-In — dark matter is created through small and rare interactions with particles in a hot, energetic environment. It contains a new mechanism where this production occurs just before the Big Bang, during cosmic inflation, leading to dark matter being formed much earlier than in existing theories... "The thing that's unique to our model is that dark matter is successfully produced during inflation," said Katherine Freese, Director of the Weinberg Institute of Theoretical Physics and the Texas Center for Cosmology and Astroparticle Physics at The University of Texas at Austin and lead author of the paper. "In most [other] models, anything that is created during inflation is then 'inflated away' by the exponential expansion of the universe, to the point where there is essentially nothing left." In this new mechanism, all the dark matter that we observe today could have been created during that brief, pre-Big Bang period of inflation. The quantum field driving inflation, the inflation, loses some of its energy to radiation, and this radiation, in turn, produces dark matter particles via the freeze-in mechanism.... The WIFI [Warm Inflation via ultraviolet Freeze-In] model cannot yet be confirmed by observations. But a key part of the scenario, warm inflation, will be tested over the next decade by the so-called cosmic microwave background experiments. Confirming warm inflation would be a significant step for the WIFI model's dark matter production scenario. "What was before inflation? Physicists have no idea."

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