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Two days after Facebook announced that it would block posts that deny the Holocaust, Twitter decided to do the same. Bloomberg reports: Twitter's policy doesn't explicitly state that denying violent events is against the rules, but the spokeswoman confirmed that "attempts to deny or diminish" violent events, including the Holocaust, would be removed based on the company's interpretation of the policy. "We strongly condemn anti-semitism, and hateful conduct has absolutely no place on our service," she said in a statement. "We also have a robust 'glorification of violence' policy in place and take action against content that glorifies or praises historical acts of violence and genocide, including the Holocaust."

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schwit1 shares a report from Phys.Org: A team of physicists led by Professor Patrick Windpassinger at Johannes Gutenberg University Mainz (JGU) has successfully transported light stored in a quantum memory over a distance of 1.2 millimeters. They have demonstrated that the controlled transport process and its dynamics has only little impact on the properties of the stored light. The researchers used ultra-cold rubidium-87 atoms as a storage medium for the light as to achieve a high level of storage efficiency and a long lifetime. The controlled manipulation and storage of quantum information as well as the ability to retrieve it are essential prerequisites for achieving advances in quantum communication and for performing corresponding computer operations in the quantum world. Optical quantum memories, which allow for the storage and on-demand retrieval of quantum information carried by light, are essential for scalable quantum communication networks. In their recent publication, Professor Patrick Windpassinger and his colleagues have described the actively controlled transport of such stored light over distances larger than the size of the storage medium. Some time ago, they developed a technique that allows ensembles of cold atoms to be transported on an 'optical conveyor belt' which is produced by two laser beams. The advantage of this method is that a relatively large number of atoms can be transported and positioned with a high degree of accuracy without significant loss of atoms and without the atoms being unintentionally heated. The physicists have now succeeded in using this method to transport atomic clouds that serve as a light memory. The stored information can then be retrieved elsewhere. Refining this concept, the development of novel quantum devices, such as a racetrack memory for light with separate reading and writing sections, could be possible in the future. The findings have been published in the journal Physical Review Letters.

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Joe2020 shares a report from Science News: Now, scientists have found the first superconductor that operates at room temperature -- at least given a fairly chilly room. The material is superconducting below temperatures of about 15 degrees Celsius (59 degrees Fahrenheit), physicist Ranga Dias of the University of Rochester in New York and colleagues report October 14 in Nature. The team's results "are nothing short of beautiful," says materials chemist Russell Hemley of the University of Illinois at Chicago, who was not involved with the research. However, the new material's superconducting superpowers appear only at extremely high pressures, limiting its practical usefulness. Dias and colleagues formed the superconductor by squeezing carbon, hydrogen and sulfur between the tips of two diamonds and hitting the material with laser light to induce chemical reactions. At a pressure about 2.6 million times that of Earth's atmosphere, and temperatures below about 15 degrees C, the electrical resistance vanished. That alone wasn't enough to convince Dias. "I didn't believe it the first time," he says. So the team studied additional samples of the material and investigated its magnetic properties. Superconductors and magnetic fields are known to clash -- strong magnetic fields inhibit superconductivity. Sure enough, when the material was placed in a magnetic field, lower temperatures were needed to make it superconducting. The team also applied an oscillating magnetic field to the material, and showed that, when the material became a superconductor, it expelled that magnetic field from its interior, another sign of superconductivity. The scientists were not able to determine the exact composition of the material or how its atoms are arranged, making it difficult to explain how it can be superconducting at such relatively high temperatures. Future work will focus on describing the material more completely, Dias says.

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Researchers at the Department of Chemistry, American University, used spinach to make a carbon-rich catalyst that can be used to improve the performance of fuel cells and metal-air batteries. IEEE Spectrum reports: The spinach was a used a precursor for high-performance catalysts required for the oxygen reduction reactions (ORRs) in fuel cells. Traditionally, fuel cells have used platinum-based catalysts, but not only is platinum very expensive and difficult to obtain, it can be vulnerable to chemical poisoning in certain conditions. Consequently, researcher have looked into biomass-derived, carbon-based, catalysts to replace platinum, but there have been bottlenecks in preparing the materials in a cost-effective and non-toxic way. "We were a little bit lucky to pick up spinach," says [Shouzhong Zou], because of its high iron and nitrogen content. "At this point [our method] does require us to add a little bit more nitrogen into the starting material, because even though [spinach] has a lot of nitrogen to begin with, during the preparation process, some of this nitrogen gets lost." The preparation of the spinach-based catalyst sounds as first suspiciously like a smoothie recipe at first -- wash fresh leaves, pulverize into a juice, and freeze-dry. This freeze-dried juice is then ground into a powder, to which melamine is added as a nitrogen promoter. Salts like sodium chloride and potassium chloride -- "pretty much like the table salt that we use in our kitchen," says Zou -- are also added, necessary for creating pores that increase the surface area available for reactions. Nanosheets are produced from the spinach -- melamine -- salt composites by pyrolyzing them at 900 C a couple of times. "Obviously... we can optimize how we prepare this material [to make it more efficient]." An efficient catalyst means a faster, more efficient reaction. In the case of fuel cells, this can increase the energy output of batteries. This is where the porosity of the nanosheets helps. "Even though we call them nanosheets," Zou says, "when they are stacked together, it's not like a stack of paper that is very solid." The addition of salts to create tiny holes that allows oxygen to penetrate the material rather than access only the outer surfaces. "We need to make it porous enough that... all the active sites can be used." The other factor that favorably disposed the American University team towards spinach was that it is a renewable source of biomass. "Sustainability is a very important factor in our consideration," says Zou. The big question to explore, he adds, is how can we avoid competition "with the dinner table." (Biofuel production has already raised concerns about food crops being diverted away from hungry mouths.) "And the second is, how do we keep the carbon footprint down in terms of his catalyst preparation... because currently we do use high temperatures in our preparation procedure?" If we can find different ways to do these to achieve the same type of material, that will cut back the energy consumption and reduce significantly the carbon footprint."

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An anonymous reader quotes a report from Ars Technica: Google and Intel are warning of a high-severity Bluetooth flaw in all but the most recent version of the Linux Kernel. While a Google researcher said the bug allows seamless code execution by attackers within Bluetooth range, Intel is characterizing the flaw as providing an escalation of privileges or the disclosure of information. The flaw resides in BlueZ, the software stack that by default implements all Bluetooth core protocols and layers for Linux. Besides Linux laptops, it's used in many consumer or industrial Internet-of-things devices. It works with Linux versions 2.4.6 and later. So far, little is known about BleedingTooth, the name given by Google engineer Andy Nguyen, who said that a blog post will be published "soon." A Twitter thread and a YouTube video provide the most detail and give the impression that the bug provides a reliable way for nearby attackers to execute malicious code of their choice on vulnerable Linux devices that use BlueZ for Bluetooth. Intel, meanwhile, has issued this bare-bones advisory that categorizes the flaw as privilege-escalation or information-disclosure vulnerability. The advisory assigned a severity score of 8.3 out of a possible 10 to CVE-2020-12351, one of three distinct bugs that comprise BleedingTooth. "Potential security vulnerabilities in BlueZ may allow escalation of privilege or information disclosure," the advisory states. "BlueZ is releasing Linux kernel fixes to address these potential vulnerabilities." Intel, which is a primary contributor to the BlueZ open source project, said that the most effective way to patch the vulnerabilities is to update to Linux kernel version 5.9, which was published on Sunday. Those who can't upgrade to version 5.9 can install a series of kernel patches the advisory links to. Maintainers of BlueZ didn't immediately respond to emails asking for additional details about this vulnerability. Ars Technica points out that since BleedingTooth requires proximity to a vulnerable device, there's not much reason for people to worry about this vulnerability. "It also requires highly specialized knowledge and works on only a tiny fraction of the world's Bluetooth devices," it adds.

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According to WESH Orlando, Florida residents next year will be able to apply for new mobile driver's licenses that can be easily accessed on a smartphone, tablet, or other device. They will be valid as a traditional license. From the report: The service will be provided by the company Thales, which designs and builds electrical systems and provides services for the aerospace, defense, transportation and security markets. "The State of Florida will be the first state in the United States to provide mobile Driver Licenses with leading-edge security mechanisms, fully compliant with rigorous national and international standards.," a statement from Thales said. According to Thales, a digital license will work the same way as a traditional one. People would open the app and present it to verify your age, check in at TSA or interact with law enforcement. As of now, though, Thales states on their website, "It will be up to each state and local law enforcement agency to determine what procedure and methods work best within their existing protocol." It's unclear exactly when Florida will begin offering the mobile licenses.

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In a tweet, Elon Musk announced that Tesla will further cut the price of its Model S "Long Range" sedan to $69,420. "This pricing wasn't done on a whim and a joint," adds TechCrunch. "The price cut is likely in response to Lucid undercutting Tesla on pricing a few hours ago." From the report: Elon Musk declares that "The gauntlet has been thrown down." Earlier today, Lucid announced that its entry level sedan will cost $77,400 minus a $7,500 U.S. tax credit. Since most buyers qualify for the credit, that brings the effective price down to $69,900. You see where this is headed, right? With a new starting price of $69,420, this would be the second Model S price cut this week. Roadshow by CNET reported yesterday the automaker quietly cut $3,000 off the Model S earlier this week, potentially in a bid to outdo Lucid before its announcement today. Earlier this year, Tesla cut $2,000 off the starting price of the Model 3.

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An anonymous reader quotes a report from Yahoo: In a new study published Wednesday, researchers in Canada found that, among 95 critically ill COVID-19 patients, 84 percent of those with the blood types A and AB required mechanical ventilation compared to 61 percent of patients with type O or type B, CNN reports. The former group also remained in the intensive care unit for a median of 13.5 days, while the latter's median stay was nine days. Dr. Mypinder Sekhon, an intensive care physician at Vancouver General Hospital and the author of the study, said blood type has been "at the back of my mind" when treating patients, but "we need repeated findings across many jurisdictions that show the same thing" before anything definitive is established. It's still unclear what may be behind the possible distinction; Sekhon said one explanation could be that people with blood type O are less prone to blood clotting, which can often lead to more severe cases. Either way, Sekhon doesn't believe blood type will supersede other "risk factors of severity" like age or comorbidities, and he said people should not behave differently based on their group. The two studies were published in the journal Blood Advances.

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China is starting a first-of-its-kind digital yuan trial by distributing 10 million yuan ($1.5 million) of the digital currency among 50,000 participants selected by lottery. "That equates to each participant being granted 200 yuan, or $30, to spend at any of 3,389 designated restaurants and stores," notes Nikkei Asian Review. From the report: The trial ends next Monday. Other tests of digital currencies have mainly been done by the public sector, but this is the first to involve a large number of ordinary citizens. There was no cost to take part in the test. More than 1.91 million people applied to take part with and acceptance rate at less than 3%. Ostensibly, the digital yuan project is meant to make China's currency more international and user friendly. But critics say it would also allow authorities to more easily track funds. Apprehensions over China's digital currency assume such transactions will not stop at the nation's border. If the digital yuan is taken up across the world through trade and other avenues, it could undermine the dollar's status as a global key currency. Sanctions that ban dollar transactions would risk losing effectiveness. And if the digital yuan becomes the international standard in terms of technology, it could create a hindrance to other nations' issuing their own digital currencies.

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Microsoft co-founder and former CEO Bill Gates told CNBC on Wednesday morning he had been naive about the government scrutiny that comes with getting large when he was running Microsoft and said the chance of Big Tech antitrust regulation is "pretty high." CNBC reports: "Whenever you get to be a super-valuable company, affecting the way people communicate and even political discourse being mediated through your system and higher percentage of commerce -- through your system -- you're going to expect a lot of government attention," Gates said in the "Squawk Box" interview. Last week, the House Judiciary subcommittee on antitrust released a report concluding that Amazon, Apple, Facebook and Google hold monopoly power. "I was naive at Microsoft and didn't realize that our success would lead to government attention," Gates said, referring to Microsoft's antitrust challenges from more than 20 years ago. "And so I made some mistakes -- you know, just saying, 'Hey, I never go to Washington, D.C.' And now I don't think, you know, that naivete is there." Gates stepped down as Microsoft CEO in the middle of the U.S. Justice Department's antitrust case, which charged the company had tried to monopolize the web browser market when it bundled Internet Explorer with Windows. The company settled with the DOJ in 2001. "The rules will change somewhat," Gates said in contrast about the possibility of future regulation. "I'd say the chances of them doing something is pretty high." "We have to get the particulars," said Gates when asked about the risk of additional regulation cutting down on innovation. "Is there some rule about acquisition? Is there some rule about splitting parts of the companies, either -- to create open availability of those resources?" Anti-competitive "killer acquisitions" was one of the House subcommittee's concerns, and the report looked into whether Facebook acquired Instagram to eliminate a competitor. Splitting up such acquisitions may be one possibility of future regulation. "We're in uncharted territory here," said Gates.

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Tim Harford, writing for Financial Times: A well-designed auction forces bidders to reveal the truth about their own estimate of the prize's value. At the same time, the auction shares that information with the other bidders. And it sets the price accordingly. It is quite a trick. But, in practice, it is a difficult trick to get right. In the 1990s, the US Federal government turned to auction theorists -- Milgrom and Wilson prominent among them -- for advice on auctioning radio-spectrum rights. "The theory that we had in place had only a little bit to do with the problems that they actually faced," Milgrom recalled in an interview in 2007. "But the proposals that were being made by the government were proposals that we were perfectly capable of analysing the flaws in and improving." The basic challenge with radio-spectrum auctions is that many prizes are on offer, and bidders desire only certain combinations. A TV company might want the right to use Band A, or Band B, but not both. Or the right to broadcast in the east of England, but only if they also had the right to broadcast in the west. Such combinatorial auctions are formidably challenging to design, but Milgrom and Wilson got to work. Joshua Gans, a former student of Milgrom's who is now a professor at the University of Toronto, praises both men for their practicality. Their theoretical work is impressive, he said, "but they realised that when the world got too complex, they shouldn't adhere to proving strict theorems."

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Wojtek Borowicz interviews David Heinemeier Hansson, the creator of the popular Ruby on Rails web development framework: Wojtek Borowicz: Software methodology is an industry of its own. There is Scrum, and Agile, and coaches, and books, and all of that. But you and your team at Basecamp don't follow these practices. Why? DHH: First of all, our approach to software development is heavily inspired by the Agile Manifesto and the Agile values. It is not so much inspired by the Agile practices as they exist today. A lot of Agile software methodologies focus on areas of product development that are not where the hard bits lie. They are so much about the procedural structures. Software, in most cases, is inherently unpredictable, unknowable, and unshaped. It's almost like a gas. It can fit into all sorts of different openings from the same basic idea. The notion of trying to estimate how long a feature is going to take doesn't work because you don't know what you're building and because humans are terrible at estimating anything. The history of software development is one of late or cancelled projects. If you were to summarize the entire endeavor of software development, you'd say: 'The project ran late and it got canceled.' Planning work doesn't work, so to speak. What we do at Basecamp we chose to label Shape Up, simply because that is where we find the hard work to be. We're trying to just accept the core constraint that it is impossible to accurately specify what software should do up front. You can only discover what software should do within constraints. But it's not like we follow the idea that it's done when it's done, either. That's an absolute abdication of product management thinking. What we say instead is: don't do estimates, do budgets. The core of Shape Up is about budgets. Not how long is something going to take but what is something worth. Because something could take a week or four months. What is it worth? [...] Wojtek Borowicz: So the problem with those methodologies is they put too much focus on estimating, which is inherently impossible with software? DHH: I'd go even further and say that estimation is bullshit. It's so imprecise as to be useless, even when you're dealing with fixed inputs. And you're not. No one is ever able to accurately describe what a piece of software should do before they see the piece of software. This idea that we can preemptively describe what something should do before we start working on it is bunk. Agile was sort of onto this idea that you need running software to get feedback but the modern implementations of Agile are not embracing the lesson they themselves taught.

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An anonymous reader quotes a report from Wired: Researchers at Israel's Ben Gurion University of the Negev have spent the last two years experimenting with "phantom" images to trick semi-autonomous driving systems. They previously revealed that they could use split-second light projections on roads to successfully trick Tesla's driver-assistance systems into automatically stopping without warning when its camera sees spoofed images of road signs or pedestrians. In new research, they've found they can pull off the same trick with just a few frames of a road sign injected on a billboard's video. And they warn that if hackers hijacked an internet-connected billboard to carry out the trick, it could be used to cause traffic jams or even road accidents while leaving little evidence behind. In this latest set of experiments, the researchers injected frames of a phantom stop sign on digital billboards, simulating what they describe as a scenario in which someone hacked into a roadside billboard to alter its video. They also upgraded to Tesla's most recent version of Autopilot known as HW3. They found that they could again trick a Tesla or cause the same Mobileye device to give the driver mistaken alerts with just a few frames of altered video. The researchers found that an image that appeared for 0.42 seconds would reliably trick the Tesla, while one that appeared for just an eighth of a second would fool the Mobileye device. They also experimented with finding spots in a video frame that would attract the least notice from a human eye, going so far as to develop their own algorithm for identifying key blocks of pixels in an image so that a half-second phantom road sign could be slipped into the "uninteresting" portions. And while they tested their technique on a TV-sized billboard screen on a small road, they say it could easily be adapted to a digital highway billboard, where it could cause much more widespread mayhem. "Autopilot is a driver assistance feature that is intended for use only with a fully attentive driver who has their hands on the wheel and is prepared to take over at any time," reads Tesla's response. The Ben Gurion researchers counter that Autopilot is used very differently in practice. "As we know, people use this feature as an autopilot and do not keep 100 percent attention on the road while using it," writes Mirsky in an email. "Therefore, we must try to mitigate this threat to keep people safe, regardless of [Tesla's] warnings."

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Amazon.com has recklessly reinstated dangerous warehouse productivity quotas despite telling a judge that it was suspending them during the pandemic, workers said in a court filing. From a report: "Amazon has not been honest and forthcoming," employees at a warehouse in Staten Island, New York, told the judge handling their lawsuit, which claims the company's "oppressive and dangerous" policies violated public-nuisance laws and exacerbated Covid-19 hazards. While Amazon says worker safety is its top priority, employees at several facilities in different states claim their well-being takes a back seat to quickly shipping customers' orders. In July, Amazon provided the court a message it had sent to employees and posted in bathrooms at the Staten Island facility, telling them they wouldn't be disciplined for falling short of the company's quotas for how many tasks they complete each hour. Workers were also assured that time spent on safety measures like washing their hands wouldn't be counted against them under Amazon's "Time Off Task" policy, which restricts the number of unproductive minutes allowed in their day. The company also submitted a statement by a U.S. human resources director that the more permissive policy dated back to March, when due to Covid-19 the company "ceased providing productivity rate feedback to associates and imposing any discipline related to low productivity rates."

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The German Research Vessel Polarstern has sailed back into its home port after completing a remarkable expedition to the Arctic Ocean. The ship spent a year in the polar north, much of it with its engines turned off so it could simply drift in the sea-ice. From a report The point was to study the Arctic climate and how it is changing. And expedition leader, Prof Markus Rex, returned with a warning. "The sea-ice is dying," he said. "The region is at risk. We were able to witness how the ice disappears and in areas where there should have been ice that was many metres thick, and even at the North Pole -- that ice was gone," the Alfred Wegener Institute scientist told a media conference in Bremerhaven on Monday. RV Polarstern was on station to document this summer's floes shrink to their second lowest ever extent in the modern era. The floating ice withdrew to just under 3.74 million sq km (1.44 million sq miles). The only time this minimum has been beaten in the age of satellites was 2012, when the pack ice was reduced to 3.41 million sq km. The downward trend is about 13% per decade, averaged across the month of September. "This reflects the warming of the Arctic," said Prof Rex. "The ice is disappearing and if in a few decades we have an ice-free Arctic -- this will have a major impact on the climate around the world."

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An anonymous reader shares a report: The railroad tracks cut through Weyling White's boyhood backyard like an invisible fence. He would play there on sweltering afternoons, stacking rocks along the rails under the watch of his grandfather, who established a firm rule: Weyling wasn't to cross the right of way into the white part of town. The other side had nicer homes and parks, all the medical offices, and the town's only hospital. As a consequence, White said, his family mostly got by without regular care, relying on home remedies and the healing hands of the Baptist church. "There were no health care resources whatsoever," said White, 34. "You would see tons of worse health outcomes for people on those streets." The hard lines of segregation have faded in Ahoskie, a town of 5,000 people in the northeastern corner of the state. But in health care, a new force is redrawing those barriers: algorithms that blindly soak up and perpetuate historical imbalances in access to medical resources. A STAT investigation found that a common method of using analytics software to target medical services to patients who need them most is infusing racial bias into decision-making about who should receive stepped-up care. While a study published last year documented bias in the use of an algorithm in one health system, STAT found the problems arise from multiple algorithms used in hospitals across the country. The bias is not intentional, but it reinforces deeply rooted inequities in the American health care system, effectively walling off low-income Black and Hispanic patients from services that less sick white patients routinely receive. These algorithms are running in the background of most Americans' interaction with the health care system. They sift data on patients' medical problems, prior health costs, medication use, lab results, and other information to predict how much their care will cost in the future and inform decisions such as whether they should get extra doctor visits or other support to manage their illnesses at home. The trouble is, these data reflect long-standing racial disparities in access to care, insurance coverage, and use of services, leading the algorithms to systematically overlook the needs of people of color in ways that insurers and providers may fail to recognize.

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NASA has announced more than a third of a billion dollars worth of "Tipping Point" contracts awarded to over a dozen companies pursuing potentially transformative space technologies. The projects range from in-space testing of cryogenic tech to a 4G LTE network for the Moon. From a report: The space agency is almost always accepting applications for at least one of its many grant and contract programs, and Tipping Point is directly aimed at commercial space capabilities that need a bit of a boost. According to the program description, "a technology is considered at a tipping point if an investment in a demonstration will significantly mature the technology, increase the likelihood of infusion into a commercial space application, and bring the technology to market for both government and commercial applications."

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Video conferencing platform Zoom announced today plans to roll out end-to-end encryption (E2EE) capabilities starting next week. From a report: E2EE will allow Zoom users to generate individual encryption keys that will be used to encrypt voice or video calls between them and other conference participants. These keys will be stored locally and will not be shared with Zoom servers, meaning the software company won't be able to access or intercept any ongoing E2EE meetings. Support for E2EE calls will first be part of Zoom clients to be released next week. To use the new feature, users must update theri clients next week and enable support for E2EE calls at the account level. This green shield will contain a lock if E2EE is active. If the lock is absent, Zoom will use its default AES 256-bit GCM encryption scheme, which the company uses to secure current communications, but which the company can also intercept. Further reading: Zoom Adds Ability To Open Apps Like Dropbox And Slack, Event-Hosting Tools As Part Of Push Beyond Video Meetings.

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Jason Snell, writing at Six Colors: Here's one of the weirdest aspects of Tuesday's iPhone launch event: Apple has been less than forthright about the real prices of the iPhone 12 and iPhone 12 mini. At the event, Apple referred to these products as starting at $699 (iPhone 12 mini) and $799 (iPhone 12), but those prices are not actually accurate unless you slap a big asterisk on there. (As Apple does on its marketing pages, because it must.) Here's what's actually happening, at least in the U.S.: Apple has cut deals with AT&T and Verizon that give existing customers of those carriers $30 off their purchases. The actual prices of the two models are $729 and $829, and that's what you'll pay if you're a U.S. subscriber to Sprint, T-Mobile, any smaller pay-as-you-go carriers, or if you want to buy a SIM-free model with no carrier connection at all. (The 12 Pro and 12 Pro Max are the same price on all carriers.) It's embarrassing that Apple is hiding the real price of the iPhone 12.

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Apple has poached a key member of Google's Project Zero, a hacking team at Google that has found dozens of critical vulnerabilities in Apple's iOS and other critical Apple software. From a report: Last year, Apple and Google fought over a series of vulnerabilities that Project Zero discovered in iOS, with Apple suggesting that Google was overselling the vulnerabilities. About a year later, Brandon Azad announced on Twitter at the beginning of October that he was leaving Google's elite team of hackers to join Apple. "My teammates at Project Zero have been among the kindest and smartest people I've met, and I've learned so much from them," Azad wrote. "I'll really miss working alongside everyone on the team. Thank you all for these wonderful experiences, and keep on hacking!" Azad has been widely considered one of the best iPhone hackers who didn't work for Apple, being named by Apple in countless security advisories, and presenting highly technical findings on Apple's products at major cybersecurity conferences around the world. Last year, Motherboard profiled Project Zero and revealed that Apple had been trying to poach a colleague of Azad, Ian Beer.

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