An anonymous reader quotes a report from Phys.Org : Even if humanity stopped emitting greenhouse gases tomorrow, Earth will warm for centuries to come and oceans will rise by meters, according to a controversial modeling study published Thursday. Natural drivers of global warming -- more heat-trapping clouds, thawing permafrost, and shrinking sea ice -- already set in motion by carbon pollution will take on their own momentum, researchers from Norway reported in the Nature journal Scientific Reports. Using a stripped-down climate model, [lead author Jorgen Randers, a professor emeritus of climate strategy at the BI Norwegian Business School] and colleague Ulrich Goluke projected changes out to the year 2500 under two scenarios: the instant cessation of emissions, and the gradual reduction of planet warming gases to zero by 2100.

In an imaginary world where carbon pollution stops with a flip of the switch, the planet warms over the next 50 years to about 2.3 degrees Celsius above pre-industrial levels -- roughly half-a-degree above the target set in the 2015 Paris Agreement -- and cools slightly after that. Earth's surface today is 1.2C hotter than it was in the mid-19th century, when temperatures began to rise. But starting in 2150, the model has the planet beginning to gradually warm again, with average temperatures climbing another degree over the following 350 years, and sea levels going up by at least three meters. Under the second scenario, Earth heats up to levels that would tear at the fabric of civilization far more quickly, but ends up at roughly the same point by 2500.

The core finding -- contested by leading climate scientists -- is that several thresholds, or "tipping points", in Earth's climate system have already been crossed, triggering a self-perpetuating process of warming, as has happened millions of years in the past. One of these drivers is the rapid retreat of sea ice in the Arctic. [...] Another source is the thawing of permafrost, which holds twice as much carbon as there is in the atmosphere. The third is increasing amounts of water vapor, which also has a warming effect. Reactions from half-a-dozen leading climate scientists to the study -- which the authors acknowledge is schematic -- varied sharply, with some saying the findings merit follow-up research, and others rejecting it out of hand. There is a way to stop the melting process, but it involves sucking CO2 out of the atmosphere and storing it underground, which isn't yet possible at the scale required. The authors also suggest making Earth's surface brighter and planting billions of trees to slow or halt the planet warming gases.

An anonymous reader quotes a report from Ars Technica : In 2008, researcher Dan Kaminsky revealed one of the more severe Internet security threats ever: a weakness in the domain name system that made it possible for attackers to send users en masse to imposter sites instead of the real ones belonging to Google, Bank of America, or anyone else. With industrywide coordination, thousands of DNS providers around the world installed a fix that averted this doomsday scenario. Now, Kaminsky's DNS cache poisoning attack is back. Researchers on Wednesday presented a new technique that can once again cause DNS resolvers to return maliciously spoofed IP addresses instead of the site that rightfully corresponds to a domain name.

On Wednesday, researchers from Tsinghua University and the University of California, Riverside presented a technique that, once again, makes cache poisoning feasible. Their method exploits a side channel that identifies the port number used in a lookup request. Once the attackers know the number, they once again stand a high chance of successfully guessing the transaction ID. The side channel in this case is the rate limit for ICMP, the abbreviation for the Internet Control Message Protocol. To conserve bandwidth and computing resources, servers will respond to only a set number of requests from other servers. After that, servers will provide no response at all. Until recently, Linux always set this limit to 1,000 per second. To exploit this side channel, the new spoofing technique floods a DNS resolver with a high number of responses that are spoofed so they appear to come from the name server of the domain they want to impersonate. Each response is sent over a different port.

When an attacker sends a response over the wrong port, the server will send a response that the port is unreachable, which drains the global rate limit by one. When the attacker sends a request over the right port, the server will give no response at all, which doesn't change the rate limit counter. If the attacker probes 1,000 different ports with spoofed responses in one second and all of them are closed, the entire rate limit will be drained completely. If, on the other hand, one out of the 1,000 ports is open, then the limit will be drained to 999. Subsequently, the attacker can use its own non-spoofed IP address to measure the remaining rate limit. And if the server responds with one ICMP message, the attacker knows one of the previously probed 1,000 ports must be open and can further narrow down to the exact port number. Linux kernel developers responded by introducing a change that causes the rate limit to randomly fluctuate between 500 and 2,000 per second, preventing the new technique from working. Cloudflare also introduced a fix where its DNS service will fall back to TCP, "which is much more difficult to spoof," reports Ars.

The researchers' press release is available here.

A cryptographic master tool called indistinguishability obfuscation has for years seemed too good to be true. Three researchers have figured out that it can work. Erica Klarreich, reporting for Quanta Magazine: In 2018, Aayush Jain, a graduate student at the University of California, Los Angeles, traveled to Japan to give a talk about a powerful cryptographic tool he and his colleagues were developing. As he detailed the team's approach to indistinguishability obfuscation (iO for short), one audience member raised his hand in bewilderment. "But I thought iO doesn't exist?" he said. At the time, such skepticism was widespread. Indistinguishability obfuscation, if it could be built, would be able to hide not just collections of data but the inner workings of a computer program itself, creating a sort of cryptographic master tool from which nearly every other cryptographic protocol could be built. It is "one cryptographic primitive to rule them all," said Boaz Barak of Harvard University. But to many computer scientists, this very power made iO seem too good to be true. Computer scientists set forth candidate versions of iO starting in 2013. But the intense excitement these constructions generated gradually fizzled out, as other researchers figured out how to break their security. As the attacks piled up, "you could see a lot of negative vibes," said Yuval Ishai of the Technion in Haifa, Israel. Researchers wondered, he said, "Who will win: the makers or the breakers?" "There were the people who were the zealots, and they believed in [iO] and kept working on it," said Shafi Goldwasser, director of the Simons Institute for the Theory of Computing at the University of California, Berkeley. But as the years went by, she said, "there was less and less of those people."

Now, Jain -- together with Huijia Lin of the University of Washington and Amit Sahai, Jain's adviser at UCLA -- has planted a flag for the makers. In a paper posted online on August 18, the three researchers show for the first time how to build indistinguishability obfuscation using only "standard" security assumptions. All cryptographic protocols rest on assumptions -- some, such as the famous RSA algorithm, depend on the widely held belief that standard computers will never be able to quickly factor the product of two large prime numbers. A cryptographic protocol is only as secure as its assumptions, and previous attempts at iO were built on untested and ultimately shaky foundations. The new protocol, by contrast, depends on security assumptions that have been widely used and studied in the past. "Barring a really surprising development, these assumptions will stand," Ishai said. While the protocol is far from ready to be deployed in real-world applications, from a theoretical standpoint it provides an instant way to build an array of cryptographic tools that were previously out of reach. For instance, it enables the creation of "deniable" encryption, in which you can plausibly convince an attacker that you sent an entirely different message from the one you really sent, and "functional" encryption, in which you can give chosen users different levels of access to perform computations using your data. The new result should definitively silence the iO skeptics, Ishai said. "Now there will no longer be any doubts about the existence of indistinguishability obfuscation," he said. "It seems like a happy end."

An anonymous reader quotes a report from Motherboard: Last month, as students at Wilfrid Laurier University, in Ontario, Canada, began studying for their midterm exams, many of them had to memorize not just the content on their tests, but a complex set of instructions for how to take them. The school has a student body of nearly 18,500 undergraduates, and is one of many universities that have increasingly turned to exam proctoring software to catch supposed cheaters. It has a contract with Respondus, one of the many exam proctoring companies offering software designed to monitor students while they take tests by tracking head and eye movements, mouse clicks, and more. This type of surveillance has become the new norm for tens of thousands of students around the world, who -- forced to study remotely as a result of the COVID-19 pandemic, often while paying full tuition -- are subjected to programs that a growing body of critics say are discriminatory and highly invasive.

Like its competitors in the exam surveillance industry, Respondus uses a combination of facial detection, eye tracking, and algorithms that measure "anomalies" in metrics like head movement, mouse clicks, and scrolling rates to flag students exhibiting behavior that differs from the class norm. These programs also often require students to do 360-degree webcam scans of the rooms in which they're testing to ensure they don't have any illicit learning material in sight.

Some of the requirements for Wilfrid Laurier students went even further. In exam instructions distributed to students, one WLU professor wrote that anyone who wished to use foam noise-cancelling ear plugs must "in plain view of your webcam place the ear plugs on your desk and use a hard object to hit each ear plug before putting it in your ear -- if they are indeed just foam ear plugs they will not be harmed." Other instructors required students to buy hand mirrors and hold them up to their webcams prior to beginning a test to ensure they hadn't written anything on the webcam. Another professor told students, "DO NOT allow others in your home to use the internet while you are completing your test," presumably because proctoring software can be a nightmare for students without reliable high-speed internet access. That same exam guide also said that students should not sit in front of pictures or posters that contain animal faces because the software might flag them as suspicious for having another person in the room -- not a reassuring requirement, given that one of the chief criticisms of exam proctoring software is that they often fail to recognize students with darker skin tones. One of the main reasons why this is such an issue is because most universities have chosen not to set standards for how instructors should use proctoring software.

"As a result, campuses that use the programs are increasingly seeing students voice their anger not just with the programs themselves, but with how individual professors use them," reports Motherboard. Students also aren't accepting the excuse universities and proctoring software companies often make: that professors decide how to use the tools, so they're the ones responsible for the harms they cause.

Panasonic has collaborated with JR East on a vacuum cleaner-style device to solve a new problem that has sprung up on recent years: a rise in people dropping wireless earbuds onto train tracks. "The device is being tested at Ikebukuro station, a major hub in northern Tokyo, and early results suggest it works much faster than the traditional grabber," reports The Verge. From the report: JR East, the part of Japan's formerly private railway group that covers the Tokyo and Tohoku regions of the country, says that there were 950 incidents of dropped earbuds across 78 Tokyo train stations in the July-September quarter, Jiji Press reports. The figure apparently accounts for a quarter of all dropped items. According to JR East, station staff normally use a grabber-style "magic hand" tool to pick up larger items that fall onto tracks, like hats or smartphones. But the gravel between the rails makes smaller objects -- like, say, a left AirPod Pro -- more difficult to retrieve, meaning staff sometimes have to wait until after the last train.

An anonymous reader quotes a report from ZDNet: [E]ven today's most sophisticated GPS systems are still unable to map a huge chunk of the Earth: that which is located under oceans, seas, or rivers. The technology, in effect, doesn't mix well with water, which breaks down the radio waves GPS relies on to function. MIT scientists have been looking at ways to create a new type of underwater GPS, which could be used to better understand the mysteries that lie between surface and seabed. The researchers have now unveiled a device called an underwater backscatter localization (UBL) that reacts to acoustic signals to provide positioning information, even when it is stuck in oceanic depths. All of this, without even using a battery.

Underwater devices already exist, for example to be fitted on whales as trackers, but they typically act as sound emitters. The acoustic signals produced are intercepted by a receiver that in turn can figure out the origin of the sound. Such devices require batteries to function, which means that they need to be replaced regularly -- and when it is a migrating whale wearing the tracker, that is no simple task. On the other hand, the UBL system developed by MIT's team reflects signals, rather than emits them. The technology builds on so-called piezoelectric materials, which produce a small electrical charge in response to vibrations. This electrical charge can be used by the device to reflect the vibration back to the direction from which it came. In the researchers' system, therefore, a transmitter sends sound waves through water towards a piezoelectric sensor. The acoustic signals, when they hit the device, trigger the material to store an electrical charge, which is then used to reflect a wave back to a receiver. Based on how long it takes for the sound wave to reflect off the sensor and return, the receiver can calculate the distance to the UBL.

In practice, piezoelectric materials are no easy component to work with: for example, the time it takes for a piezoelectric sensor to wake up and reflect a sound signal is random. To solve this problem, the scientists developed a method called frequency hopping, which involves sending sound signals towards the UBL system across a range of frequencies. Because each frequency has a different wavelength, the reflected sound waves return at different phases. Using a mathematical theorem called an inverse Fourier transform, the researchers can use the phase patterns and timing data to reconstruct the distance to the tracking device with greater accuracy. Frequency hopping showed some promising results in deep-sea environments, but shallow waters proved even more problematic. Because of the short distance between surface and seabed, sound signals uncontrollably bounce back and forth in lower depths, as if in an echo chamber, before they reach the receiver -- potentially messing with other reflected sound waves in the process. [...] While the scientists acknowledged that addressing these challenges would require further research, a proof-of-concept for the technology has already been tested in shallow waters, and MIT's team said that the UBL system achieved centimeter-level accuracy.

Mint's programmers, led by lead developer, Clement "Clem" Lefebvre, have built their own take on Google's open-source Chromium web browser. ZDNet reports: Some of you may be saying, "Wait, haven't they offered Chromium for years? Well, yes, and no. For years, Mint used Ubuntu's Chromium build. But then Canonical, Ubuntu's parent company, moved from releasing Chromium as an APT-compatible DEB package to a Snap. The Ubuntu Snap software packing system, along with its rivals Flatpak and AppImage, is a new, container-oriented way of installing Linux applications. The older way of installing Linux apps, such as DEB and RPM package management systems for the Debian and Red Hat Linux families, incorporate the source code and hard-coded paths for each program.

While tried and true, these traditional packages are troublesome for developers. They require programmers to hand-craft Linux programs to work with each specific distro and its various releases. They must ensure that each program has access to specific libraries' versions. That's a lot of work and painful programming, which led to the process being given the name: Dependency hell. Snap avoids this problem by incorporating the application and its libraries into a single package. It's then installed and mounted on a SquashFS virtual file system. When you run a Snap, you're running it inside a secured container of its own. For Chromium, in particular, Canonical felt using Snaps was the best way to handle this program. [...]

Lefebvre wrote, "The Chromium browser is now available in the official repositories for both Linux Mint and LMDE. If you've been waiting for this I'd like to thank you for your patience." Part of the reason was, well, Canonical was right. Building Chromium from source code is one really slow process. He explained, "To guarantee reactivity and timely updates we had to automate the process of detecting, packaging and compiling new versions of Chromium. This is an application which can require more than 6 hours per build on a fast computer. We allocated a new build server with high specifications (Ryzen 9 3900, 128GB RAM, NMVe) and reduced the time it took to build Chromium to a little more than an hour." That's a lot of power! Still, for those who love it, up-to-date builds of Chromium are now available for Mint users.

Here's a good sign for alien hunters: More than 300 million worlds with similar conditions to Earth are scattered throughout the Milky Way galaxy. A new analysis [PDF] concludes that roughly half of the galaxy's sunlike stars host rocky worlds in habitable zones where liquid water could pool or flow over the planets' surfaces. From a report: "This is the science result we've all been waiting for," says Natalie Batalha, an astronomer with the University of California, Santa Cruz, who worked on the new study. The finding, which has been accepted for publication in the Astronomical Journal, pins down a crucial number in the Drake Equation. Devised by my father Frank Drake in 1961, the equation sets up a framework for calculating the number of detectable civilizations in the Milky Way. Now the first few variables in the formula -- including the rate of sunlike star formation, the fraction of those stars with planets, and the number of habitable worlds per stellar system -- are known. The number of sunlike stars with worlds similar to Earth "could have been one in a thousand, or one in a million -- nobody really knew," says Seth Shostak, an astronomer at the Search for Extraterrestrial Intelligence (SETI) Institute who was not involved with the new study.

Astronomers estimated the number of these planets using data from NASA's planet-hunting Kepler spacecraft. For nine years, Kepler stared at the stars and watched for the brief twinkles produced when orbiting planets blot out a portion of their star's light. By the end of its mission in 2018, Kepler had spotted some 2,800 exoplanets -- many of them nothing like the worlds orbiting our sun. But Kepler's primary goal was always to determine how common planets like Earth are. The calculation required help from the European Space Agency's Gaia spacecraft, which monitors stars across the galaxy. With Gaia's observations in hand, scientists were finally able to determine that the Milky Way is populated by hundreds of millions of Earth-size planets orbiting sunlike stars -- and that the nearest one is probably within 20 light-years of the solar system.

The COVID-19 exposure notification app used in England and Wales failed to warn users if they were in close contact with potentially infectious COVID-19 patients. Because of the error, thousands of people were not told to quarantine even when they should have been, according to the Sunday Times, which first reported the flaw. The Verge reports: The app was launched on September 24th, and there have been 19 million downloads since. It's built using Google and Apple's Bluetooth Low Energy-based system, which monitors nearby phones. If someone tests positive for COVID-19, their app can alert the phones that they were in contact with. The UK originally planned to use its own app, sidestepping the Google and Apple system, but reversed course in June. Since its launch, the app flagged few users for possible exposure, according to the Sunday Times. Engineers figured out the reason why last week. The app was originally built to simply recommend that anyone closer than 2 meters for more than 15 minutes to someone who later tested positive should quarantine, according to The Guardian. But just before the launch, it was adjusted to take into account when the sick person's symptoms began.

Research shows that people tend to have high levels of virus in their nose and throat, and may be more contagious, around a day before they start to show symptoms. Levels stay high the first few days of symptoms, and then drop off. If someone was in contact with a sick person outside of that window, the UK app would consider the interaction less risky. If they were in contact inside of that window, on the other hand, it would only take three minutes of contact to trigger an alert. The adjusted app did calculate those new risk levels. But the thresholds at which a person would actually get an alert were left unchanged, according to a government blog post. Without the updated thresholds, a user could have spent up to 15 minutes with a highly infectious person and up to 40 minutes with a less-contagious person without getting an alert, according to The Guardian.

An anonymous reader quotes a report from TorrentFreak: On October 23, 2020, the RIAA decided on action to stunt the growth and potentially the entire future of popular YouTube-ripping tool YouTube-DL. The music industry group filed a copyright complaint with code repository Github, demanding that the project be taken down for breaching the anti-circumvention provisions of the DMCA. While this was never likely to be well received by the hoards of people who support the software, the response was unprecedented. [...] One of the responses was to repost the content to Github itself, where hundreds of YouTube-DL forks kept the flame alight. A copy even appeared in Github's DMCA notice repository where surprisingly it remains to this day. Now, however, Github is warning of consequences for those who continue to use the platform for deliberate breaches of the DMCA.

As previously reported, Github is being unusually sympathetic to the plight of the YouTube-DL developers. Most platforms are very happy to simply follow the rules by removing content in response to a DMCA complaint and standing back while declaring "Nothing to do with us folks." Github, on the other hand, has actively become involved to try and get the project reinstated. Unfortunately, however, there is only so far Github can go, something the company made clear in a statement posted to its DMCA repository this weekend.

"If you are looking to file or dispute a takedown notice by posting to this repository, please STOP because we do not accept Pull Requests or other contributions to this repository," wrote Jesse Geraci, Github's Corporate Counsel. "Please note that re-posting the exact same content that was the subject of a takedown notice without following the proper process is a violation of GitHub's DMCA Policy and Terms of Service. If you commit or post content to this repository that violates our Terms of Service, we will delete that content and may suspend access to your account as well," Geraci wrote. This statement caused an update to Github's earlier DMCA notice advice.

Earlier this month, on land north of Toronto that previously burned in a wildfire, drones hovered over fields and fired seed pods into the ground, planting native pine and spruce trees to help restore habitat for birds. From a report: Flash Forest, the Canadian startup behind the project, plans to use its technology to plant 40,000 trees in the area this month. By the end of the year, as it expands to other regions, it will plant hundreds of thousands of trees. By 2028, the startup aims to have planted a full 1 billion trees. The company, like a handful of other startups that are also using tree-planting drones, believes that technology can help the world reach ambitious goals to restore forests to stem biodiversity loss and fight climate change. The Intergovernmental Panel on Climate Change says that it's necessary to plant 1 billion hectares of trees -- a forest roughly the size of the entire United States -- to limit global warming to 1.5 degrees Celsius. Existing forests need to be protected while new trees are planted; right now, that isn't working well. "There are a lot of different attempts to tackle reforestation," says Flash Forest cofounder and chief strategy officer Angelique Ahlstrom. "But despite all of them, they're still failing, with a net loss of 7 billion trees every year."

Drones don't address deforestation, which is arguably an even more critical issue than planting trees, since older trees can store much more carbon. But to restore forests that have already been lost, the drones can work more quickly and cheaply than humans planting with shovels. Flash Forest's tech can currently plant 10,000 to 20,000 seed pods a day; as the technology advances, a pair of pilots will be able to plant 100,000 trees in a day (by hand, someone might typically be able to plant around 1,500 trees in a day, Ahlstrom says.) The company aims to bring the cost down to 50 cents per tree, or around a fourth of the cost of some other tree restoration efforts. When it begins work at a site, the startup first sends mapping drones to survey the area, using software to identify the best places to plant based on the soil and existing plants. Next, a swarm of drones begins precisely dropping seed pods, packed in a proprietary mix that the company says encourages the seeds to germinate weeks before they otherwise would have. The seed pods are also designed to store moisture, so the seedlings can survive even with months of drought. In some areas, such as hilly terrain or in mangrove forests, the drones use a pneumatic firing device that shoots seed pods deeper into the soil.

An anonymous reader shares a report: The RIAA is ramping up the pressure on a wide range of platforms allegedly involved in music piracy. Two DMCA subpoenas obtained against Cloudflare and Namecheap require the companies to hand over all information they hold on more than 40 torrent sites, streaming portals and YouTube-ripping services. Also included in the mix are several file-hosting platforms.

Preparing to close out a major month of announcements for AMD -- and to open the door to the next era of architectures across the company -- AMD wrapped up its final keynote presentation of the month by announcing their Radeon RX 6000 series of video cards. From a report: Hosted once more by AMD CEO Dr. Lisa Su, AMD's hour-long keynote revealed the first three parts in AMD's new RDNA2 architecture video card family: the Radeon RX 6800 ($579), 6800 XT ($649), and 6900 XT ($999). The core of AMD's new high-end video card lineup, AMD means to do battle with the best of the best out of arch-rival NVIDIA. And we'll get to see first-hand if AMD can retake the high-end market on November 18th, when the first two cards hit retail shelves. AMD's forthcoming video card launch has been a long time coming for the company, and one they've been teasing particularly heavily. For AMD, the Radeon RX 6000 series represents the culmination of efforts from across the company as everyone from the GPU architecture team and the semi-custom SoC team to the Zen CPU team has played a role in developing AMD's latest GPU technology. All the while, these new cards are AMD's best chance in at least half a decade to finally catch up to NVIDIA at the high-end of the video card market. So understandably, the company is jazzed -- and in more than just a marketing manner -- about what the RX 6000 means.

Anchoring the new cards is AMD's RDNA2 GPU architecture. RDNA2 is launching near-simultaneously across consoles and PC video cards next month, where it will be the backbone of some 200 million video game consoles plus countless AMD GPUs and APUs to come. Accordingly, AMD has pulled out all of the stops in designing it, assembling an architecture that's on the cutting-edge of technical features like ray tracing and DirectX 12 Ultimate support, all the while leveraging the many things they've learned from their successful Zen CPU architectures to maximize RDNA2's performance. RDNA2 is also rare in that it isn't being built on a new manufacturing process, so coming from AMD's earlier RDNA architecture and associated video cards, AMD is relying on architectural improvements to deliver virtually all of their performance gains. Truly, it's AMD's RDNA2 architecture that's going to make or break their new cards.

omfglearntoplay shares a report from ScienceAlert: Playing through the greenery and litter of a mini forest's undergrowth for just one month may be enough to change a child's immune system, according to a small new experiment. When daycare workers in Finland rolled out a lawn, planted forest undergrowth such as dwarf heather and blueberries, and allowed children to care for crops in planter boxes, the diversity of microbes in the guts and on the skin of young kids appeared healthier in a very short space of time. Compared to other city kids who play in standard urban daycares with yards of pavement, tile and gravel, 3-, 4-, and 5-year-olds at these greened-up daycare centers in Finland showed increased T-cells and other important immune markers in their blood within 28 days.

"We also found that the intestinal microbiota of children who received greenery was similar to the intestinal microbiota of children visiting the forest every day," says environmental scientist Marja Roslund from the University of Helsinki. Prior research has shown early exposure to green space is somehow linked to a well-functioning immune system, but it's still not clear whether that relationship is causal or not. The experiment in Finland is the first to explicitly manipulate a child's urban environment and then test for changes in their micriobiome and, in turn, a child's immune system. While the findings don't hold all the answers, they do support a leading idea -- namely that a change in environmental microbes can relatively easily affect a well-established microbiome in children, giving their immune system a helping hand in the process. The study was published in the journal Science Advances.

An anonymous reader quotes a report from IEEE Spectrum: New circuits can get printed directly on human skin to help monitor vital signs, a new study finds. In the new study, researchers developed a way to sinter nanoparticles of silver at room temperature. The key behind this advance is a so-called a sintering aid layer, consisting of a biodegradable polymer paste and additives such as titanium dioxide or calcium carbonate. Positive electrical charges in the sintering aid layer neutralized the negative electrical charges the silver nanoparticles could accumulate from other compounds in their ink. This meant it took less energy for the silver nanoparticles printed on top of the sintering aid layer to come together, says study senior author Huanyu Cheng, a mechanical engineer at Pennsylvania State University.

The sintering aid layer also created a smooth base for circuits printed on top of it. This in turn improved the performance of these circuits in the face of bending, folding, twisting and wrinkling. In experiments, the scientists placed the silver nanoparticle circuit designs and the sintering aid layer onto a wooden stamp, which they pressed onto the back of a human hand. They next used a hair dryer set to cool to evaporate the solvent in the ink. A hot shower could easily remove these circuits without damaging the underlying skin. After the circuits sintered, they could help the researchers measure body temperature, skin moisture, blood oxygen, heart rate, respiration rate, blood pressure and bodily electrical signals such as electrocardiogram (ECG or EKG) readings. The data from these sensors were comparable to or better than those measured using conventional commercial sensors that were simply stuck onto the skin, Cheng says. The findings have been published in the journal Applied Materials & Interfaces.

James Randi, a Canadian-American stage magician and scientific skeptic who extensively challenged paranormal and pseudoscientific claims, has passed away Tuesday "due to age-related causes." He was 92. Slashdot reader trinarybit first shared the news. The Washington Post reports: An inveterate skeptic and bristly contrarian in his profession, Mr. Randi insisted that magic is based solely on earthly sleight of hand and visual trickery. He scorned fellow magicians who allowed or encouraged audiences to believe their work was rooted in extrasensory or paranormal powers. In contrast, the bearded, gnomish Mr. Randi cheerfully described himself as a "liar" and "cheat" in mock recognition of his magician's skills at duping people into thinking they had seen something inexplicable -- such as a person appearing to be cut in half with a saw -- when it was, in fact, the result of simple physical deception. He was equally dismissive of psychics, seers and soothsayers. Still, he was always careful to describe himself as an investigator, not a debunker, and insisted he was always open to the possibility of supernatural phenomena but simply found no evidence of it after decades of research.

To put his money where his mouth was, Mr. Randi and the research organization he helped found in 1976, the Committee for the Scientific Investigation of Claims of the Paranormal, offered payouts ranging up to $1 million to anyone who could demonstrate a supernatural or paranormal phenomenon under mutually agreed, scientifically controlled conditions. While he had many takers, he said, none of them earned a cent. Randi was featured in a handful of Slashdot stories over the years, including a two-part interview where he answered your questions.

An anonymous reader quotes a report from Ars Technica: The Federal Communications Commission's top lawyer today explained the FCC's theory of why it can grant President Donald Trump's request for a new interpretation of a law that provides legal protection to social media platforms like Twitter and Facebook. Critics of FCC Chairman Ajit Pai's plan from both the left and right say the FCC has no authority to reinterpret Section 230 of the Communications Decency Act, which gives legal immunity to online platforms that block or modify content posted by users. FCC General Counsel Thomas Johnson said those critics are wrong in a blog post published on the FCC website today.

Johnson noted that the Communications Decency Act was passed by Congress as part of the Telecommunications Act of 1996, which was an update to the Communications Act of 1934 that established the FCC and provided it with regulatory authority. Johnson also pointed to Section 201(b) of the Communications Act, which gave the FCC power to "prescribe such rules and regulations as may be necessary in the public interest to carry out the provisions of this Act."

Johnson then explained why he believes this means the FCC can reinterpret Section 230: "The Supreme Court has twice considered whether the FCC's general rulemaking authority under Section 201(b), adopted in 1938, extends to the 1996 amendments to the Act. Both times, the Court held that it does. Writing for the Court in Iowa Utilities Board, and employing his trademark textualist method, Justice Scalia wrote that this provision 'means what it says: The FCC has rulemaking authority to carry out the 'provisions of [the 1934] Act.'' The Court explained that 'the clear fact that the 1996 Act was adopted, not as a freestanding enactment, but as an amendment to, and hence part of, [the 1934] Act' shows that Congress intended the Commission to have rulemaking authority over all its provisions. Likewise, in the later City of Arlington case, the Court confirmed that the Commission's rulemaking authority '[o]f course... extends to the subsequently added portions of the Act.' From these authorities, a simple conclusion follows: Because Section 230 is among the 'subsequently added portions of the Act,' it is subject to the FCC's Section 201(b) rulemaking authority." Matt Wood, VP of policy and general counsel at media-advocacy group Free Press, told Ars today: "The FCC lawyers' latest sleight-of-hand is a clever distraction, but still not good enough to save the Commission's pending foray into speech codes and Internet regulation. The agency claims that it's not going to make rules, it's merely going to interpret the supposed ambiguities in the language of Section 230 and let courts apply that interpretation. But there's no ambiguity to resolve, nor any reason for courts to follow the FCC's interpretation. And there's no hiding the fact that the FCC's pretense of interpretation without the effect of substantive rules is a ruse and nothing better."

Mozilla has responded to the U.S. Department of Justice's antitrust lawsuit against Google, but rather than commending the DOJ's action, the Firefox browser maker has voiced concerns that its commercial partnership could make it "collateral damage" in the fight against Google's alleged monopolistic practices. From a report: The DOJ, with support from 11 U.S. states, confirmed yesterday that it is suing Google for allegedly violating anti-competition laws by crowding out rivals in the internet search and advertising markets. "Small and independent companies such as Mozilla thrive by innovating, disrupting, and providing users with industry-leading features and services in areas like search," Mozilla chief legal officer Amy Keating wrote in a blog post. "The ultimate outcomes of an antitrust lawsuit should not cause collateral damage to the very organizations -- like Mozilla -- best positioned to drive competition and protect the interests of consumers on the web."

Mozilla has a long and complicated history with Google. In recent years, Mozilla has launched countless privacy campaigns against the internet giant's various online properties, and just last month it introduced a new browser add-on to crowdsource research into YouTube's opaque recommendation algorithm. On the other hand, Mozilla relies heavily on royalties from a search engine partnership with Google. The duo recently extended their deal to make Google the default search engine inside Firefox in the U.S. and other markets, which will reportedly secure Mozilla up to $450 million over the next three years.

Last month, Amazon announced a gaming platform called Luna that lets users play games via the cloud. The company is rolling out early access today, starting with a library of 50 games and support for Mac, PC, Fire TV, and iOS devices. The Verge's Chaim Gartenberg shares what it's like so far and how it compares to other streaming services out there like Microsoft xCloud and Google Stadia. Here's an excerpt from his report: The biggest question for Luna -- like any cloud gaming service -- is performance. For cloud gaming to work well, companies like Amazon need to rapidly deliver compressed video frames that respond to your button presses even if internet bandwidth dips and even if your house isn't located right next to an Amazon server farm. Amazon recommends a minimum connection speed of 10 Mbps for Luna, but your home's internal network also matters. We tested Luna on a variety of devices in two different Verge editors' homes across two different coasts with a variety of internet speeds and connection types. So far, 10 Mbps doesn't seem like nearly enough. We found that we needed a connection of at least 25 Mbps in order to have a consistently playable stream, with more bandwidth obviously being better. My colleague Sean Hollister limited his router to 10 Mbps, 15 Mbps, and 20 Mbps, but he'd still get stretches of choppy video.

The best performance (of course) came from a PC with a wired Ethernet connection and controller, with no other family members streaming video in the house. Playing Bloodstained: Ritual of the Night on that solid of a connection was virtually indistinguishable from the game running natively. (Switching back and forth, you can tell it takes oh-so-slightly longer to swing a sword, but it felt perfectly playable.) Admittedly, there are few benefits to actually using Luna to stream the game on a capable PC. On the other hand, Metro: Exodus, one of the most graphically intensive games available to stream, looked and played decidedly worse streamed to a web browser than it does on a capable gaming PC. Honestly, it doesn't look great in either Luna or Stadia, but at least Stadia could keep up with a mouse and keyboard. Luna's mouse was extremely laggy.

Using wireless connections introduces a lot more variables into Luna's performance. If you have a steady, strong Wi-Fi connection, Luna works pretty well, with little to no lag, smooth HD video, and responsive enough gameplay to enjoy even fast-paced platformers like Sonic Mania on an iPhone with a paired Bluetooth controller. But when Luna has a bad connection, it's rough. For some reason, Amazon doesn't seem to degrade the quality of video streaming when connection speeds are bad; it just tries to power on through by dropping frames until speeds pick up. I also ran into issues where audio started to lag behind what was otherwise smooth gameplay, presumably due to a sluggish connection. Right now, it seems that Luna's performance is almost entirely dependent on having good internet. Further reading: iOS Web App, Game Library, and App Functionality

It will become illegal for anyone in the UK to pick up and use their mobile phone while driving, under new legislation to be enacted next year. From a report: The change will end a loophole that can allow drivers to escape punishment for using a hand-held phone to take a photo or play a game. Mobiles will still be able to be used to pay for a drive-through takeaway. And drivers will still be able to use devices hands-free under the plans, the Department for Transport said. At present, making phone calls and sending text messages are banned while driving. Ministers have rejected calls to also ban the use of hands-free function, for example using a sat-nav in a phone cradle. Roads minister Baroness Vere said hand-held phone use behind the wheel was "distracting and dangerous" and that "for too long risky drivers have been able to escape punishment." The change in law would apply across the UK and is expected to come into effect early next year, depending on the outcome of the consultation.