Images from the James Webb Space Telescope "don't match scientists' models of how the universe formed," reports the Washington Post.

"But it might not be time to dump the standard model of cosmology yet. " A recent analysis in the Astrophysical Journal Letters suggests an explanation for the surprisingly massive-seeming galaxies: brilliant, extremely bright bursts of newborn stars.

The galaxies photographed by the telescope looked far too mature and large to have formed so fully so soon after the universe began, raising questions about scientists' assumptions of galaxy formation. But when researchers ran a variety of computer simulations of the universe's earliest days, they discovered that the galaxies probably are not as large as they seem. Instead, they attribute their brightness to a phenomenon called "bursty star formation." As clouds of dust and debris collapse, they form dense, high-temperature cores and become stars. Bursty galaxies spit out new stars in intermittent, bright bursts instead of creating stars more consistently. Usually, these galaxies are low in mass and take long breaks between starbursts.

Because the galaxies in question look so bright in photos produced by the Webb telescope, scientists at first thought they were older and more massive. But bursty systems with the ability to produce extremely bright, abundant light may appear more massive than they really are.
"Not only does this finding explain why young galaxies appear deceptively massive, it also fits within the standard model of cosmology," explains the announcement: In the new study, Guochao Sun, who led the study, Northwestern's, Claude-André Faucher-Giguère, the study's senior author, and their team used advanced computer simulations to model how galaxies formed right after the Big Bang. The simulations produced cosmic dawn galaxies that were just as bright as those observed by the JWST...

Although other astrophysicists have hypothesized that bursty star formation could be responsible for the unusual brightness of galaxies at cosmic dawn, the Northwestern researchers are the first to use detailed computer simulations to prove it is possible. And they were able to do so without adding new factors that are unaligned with our standard model of the universe.

Kiley Price writes via Inside Climate News: In a new initiative announced on Tuesday, the U.S. Fish & Wildlife Service is working with the nonprofit Revive & Restore and other partners to create a "genetic library" of the country's endangered species -- before it's too late. Through a process called biobanking, FWS field staff are gathering biological samples such as blood, tissues and reproductive cells from animals to be cryogenically preserved at extremely low temperatures (at least -256 degrees Fahrenheit) and stored at a USDA facility in Colorado. The samples will also be genetically sequenced and this information will be uploaded to a publicly available database called GenBank, where researchers can study them and compare their genomes to other members of their species.

Los Angeles is housing more people than ever, and building lots more low-income housing, yet it can't keep pace with this ever-rising number of people who end up in cars, tents and shelters. "It's a bucket with a hole in it, so we've got to do something ... to fill that hole," says Dana Vanderford, who helps lead the department's Homelessness Prevention unit. With that goal, the pilot program is using artificial intelligence to predict who's most likely to land on the streets, so the county can step in to offer help before that happens. From a report: The program tracks data from seven county agencies, including emergency room visits, crisis care for mental health, substance abuse disorder diagnosis, arrests and sign-ups for public benefits like food aid. Then, using machine learning, it comes up with a list of people considered most at-risk for losing their homes. Vanderford says these people aren't part of any other prevention programs. "We have clients who have understandable mistrust of systems," she says. They've "experienced generational trauma. Our clients are extremely unlikely to reach out for help." Instead, 16 case managers divide up the lists and reach out to the people on them, sending letters and cold calling.

An anonymous reader writes: Toyota, the world's largest automaker, has a problem. Although the company is famous for pioneering lean methods of manufacturing and being an early pioneer of hybrid electric powertrains, the switch to battery electric vehicles caught it somewhat unprepared. As rivals locked up contracts for critical minerals and formed joint ventures with battery makers (or built their own), Toyota has appeared to fall behind. Now, it has released a new roadmap showing how it will regain competitiveness and sell 3.5 million EVs by 2030. After some early experiments with electric-converted RAV4s (including a partnership with Tesla), Toyota has finally released a modern BEV, the bZ4x. The car had a difficult launch -- a recall for wheels falling off will lead to that -- but a week's test of a bZ4x exceeded our low expectations. A look at the car's specs makes clear Toyota's problem, though: There are different battery packs for the single-motor and dual-motor versions, made by Panasonic and CATL, respectively. [...] "We will need various options for batteries, just like we have different variations of engines. It is important to offer battery solutions compatible with a variety of models and customer needs," said Takero Kato, president of BEV Factory. To that end, Toyota is working on four different solutions. Three of these will use liquid electrolytes and are meant for different applications.

A performance-focused liquid electrolyte lithium-ion battery is slated to be the first to appear in 2026. Toyota says it's targeting a 20-minute fast-charging time and wants these cells to be 20 percent cheaper than the cells used in the bZ4x. The company plans to use this in a BEV that can travel almost 500 miles (800 km) on a single charge. For lower-cost vehicles, Toyota is looking at lithium iron phosphate cells, a chemistry that's already extremely popular in China and is being used by Tesla. Toyota plans to construct these as bipolar batteries, where the active materials for the anode and cathode are on either side of a common electrode carrier rather than having separate electrodes for each. (Toyota already uses this approach for the nickel metal hydride batteries it uses in many of its hybrid models.) LFP cells are targeting a 40 percent cost reduction compared to the bZ4x battery and 20 percent more range. LFP cells don't charge as fast, but Toyota wants a 10-80 percent DC fast-charging time of 30 minutes. If it pans out, the company expects these cells in 2026 or 2027.

There's also a high-performance lithium-ion chemistry in development, though it may not be ready until 2028. Toyota wants to combine its bipolar electrode structure with a high percentage of nickel in the cathode to create a pack with extremely long range -- up to 621 miles (1,000 km). But it's also targeting a 10 percent cost reduction compared to the performance-focused pack mentioned earlier. The fourth battery technology is one that Toyota has talked about a lot in the past -- solid state. Both electrodes and electrolytes in a solid state battery are solid, which means the battery can be smaller and lighter than a cell with liquid electrodes. The technology is tantalizing, but it's troubled by the formation of dendrites -- spikes of lithium crystals that can grow and puncture the cathode. Toyota says it has made a breakthrough in durability for lithium-ion solid state cells -- it's being coy as to exactly what -- that has allowed it to switch to putting these batteries into mass production, with commercial use scheduled for 2027 or 2028. Interestingly, Toyota was originally planning to use solid state cells in its hybrids only, but it appears to have revised that idea and will put them in BEVs, with a target range of more than 600 miles and a fast-charging time of just 10 minutes.

Universities in a southern Chinese region are not doing enough to turn academic research into market applications, and in maintaining large piles of idle funds, and the findings could raise questions about the nation's ambitious tech self-sufficiency drive. SCMP: According to a new audit report by the Guangxi Zhuang autonomous region for 2022, nine universities in the region had extremely low conversion rates in bringing inventions to the market -- below 1 per cent -- from 2020 to 2022. Among them, one university saw no successful industrial applications out of 862 implemented research projects funded with a total of 131 million yuan (US$18.2 million). The findings spotlight a long-standing weak link in China's push to strengthen basic research, which it views as crucial to becoming a tech superpower by the middle of the century, and to breaking free US tech-containment measures. "Essentially, this reflects a nationwide issue," said Liu Ruiming, a professor with the National Development and Strategic Research Institute at Renmin University.

Quanta magazine thinks there's a better alternative to the artificial neural networks (or ANNs) powering AI systems. (Alternate URL) For one, ANNs are "super power-hungry," said Cornelia Fermüller, a computer scientist at the University of Maryland. "And the other issue is [their] lack of transparency." Such systems are so complicated that no one truly understands what they're doing, or why they work so well. This, in turn, makes it almost impossible to get them to reason by analogy, which is what humans do — using symbols for objects, ideas and the relationships between them....

Bruno Olshausen, a neuroscientist at the University of California, Berkeley, and others argue that information in the brain is represented by the activity of numerous neurons... This is the starting point for a radically different approach to computation known as hyperdimensional computing. The key is that each piece of information, such as the notion of a car, or its make, model or color, or all of it together, is represented as a single entity: a hyperdimensional vector. A vector is simply an ordered array of numbers. A 3D vector, for example, comprises three numbers: the x, y and z coordinates of a point in 3D space. A hyperdimensional vector, or hypervector, could be an array of 10,000 numbers, say, representing a point in 10,000-dimensional space. These mathematical objects and the algebra to manipulate them are flexible and powerful enough to take modern computing beyond some of its current limitations and foster a new approach to artificial intelligence...

Hyperdimensional computing tolerates errors better, because even if a hypervector suffers significant numbers of random bit flips, it is still close to the original vector. This implies that any reasoning using these vectors is not meaningfully impacted in the face of errors. The team of Xun Jiao, a computer scientist at Villanova University, has shown that these systems are at least 10 times more tolerant of hardware faults than traditional ANNs, which themselves are orders of magnitude more resilient than traditional computing architectures...

All of these benefits over traditional computing suggest that hyperdimensional computing is well suited for a new generation of extremely sturdy, low-power hardware. It's also compatible with "in-memory computing systems," which perform the computing on the same hardware that stores data (unlike existing von Neumann computers that inefficiently shuttle data between memory and the central processing unit). Some of these new devices can be analog, operating at very low voltages, making them energy-efficient but also prone to random noise.
Thanks to Slashdot reader ZipNada for sharing the article.

An anonymous reader quotes a report from Ars Technica: On Monday, the journal Nature released a report from Nanjing University researchers that had attempted to replicate an earlier paper that described a compound that superconducted at room temperature and relatively moderate pressures. Despite persuasive evidence that they've produced the same chemical, the team indicates they see no sign of superconductivity, even down to extremely low temperatures. The failure will undoubtedly raise further questions about the original research, which came from a lab that had an earlier paper on superconductivity retracted.

In 2020, the lab run by Ranga Dias at the University of Rochester reported a carbon-hydrogen-sulfur compound formed at extreme pressures could superconduct at room temperature. But the results were controversial, partly because it wasn't clear that the paper included enough information for anyone else to produce the same conditions and because Dias was uncooperative when asked to share experiment data. Eventually, it became apparent that the team had used undocumented methods of obtaining some of the data underlying the paper, and it was retracted. But Dias continued to claim that the superconductivity was present. (There's a good overview of the controversy on the American Physical Society website.)

Despite Nature retracting one of Dias' papers, the journal published another paper on superconductivity from his group. In this case, a lutetium-hydrogen chemical doped with nitrogen was reported to superconduct at room temperature but at much lower pressures, which could allow it to be tested with somewhat less specialized equipment. Given the history, the claim was greeted with an even higher degree of skepticism than the earlier paper.

Today, Sonos is introducing Sonos Pro, a new service targeted at businesses -- restaurants, bars, and retail stores -- that makes it easy to play music across numerous locations without breaking any licensing rules. Sonos Pro works with all S2-compatible hardware including the Ikea Symfonisk line and, if you're into retrofitting existing speakers, the Amp and Port. The Verge reports: Pro customers will gain access to a web portal that lets them remotely control what's playing in each of their locations (divided into different zones) and perform troubleshooting from afar. If you're a normal consumer and want to reset your Sonos system at home, you've got to unplug the products, but Pro customers will be able to do it with software. They'll also have the ability to schedule particular genres for different times of the day to lock in the right atmosphere for their business. Want to keep the volume low in the mornings when you've got less foot traffic and automatically raise it during peak hours? Sonos Pro can do that.

The monthly Sonos Pro subscription, priced at $35 per business location, will include "Sonos Backgrounds." This is a commercially licensed music service featuring a range of royalty-free music from independent artists that's all legally compliant for streaming at business establishments. If you're wondering why that's necessary, businesses technically aren't allowed to just start playing Spotify, Apple Music, or other mainstream music apps over their speakers. Spotify says so right here. Those services are only licensed for personal use; playing them in a public setting counts as a live performance, and that's a no-no unless you've paid for the necessary licenses from ASCAP, BMI, and other organizations. That can get extremely complicated in and of itself.

The service will provide deep, granular control over the entire system in a commercial space. You can set maximum volume limits for each speaker or enable / disable features like AirPlay, line-in playback, and more. If you want to give your staff access to Spotify after hours, that's doable with an "allow direct control" setting. Speaking of which, business owners can grant their employees access to Sonos Pro and set different permission tiers for each person. And again, this can all be done remotely. Try adjusting settings (or even switching your Wi-Fi network) for Sonos devices on a regular account, and it can get messy fast. If you're away from the devices, forget about it.

"With an 8-core Rockchip RK3588S SoC, the Orange Pi 5 is leaps and bounds faster than the aging Raspberry Pi 4," writes Phoronix: With up to 32GB of RAM, the Orange Pi 5 is also capable of serving for a more diverse user-base and even has enough potential for assembling a budget Arm Linux developer desktop. I've been testing out the Orange Pi 5 the past few weeks and it's quite fast and nice for its low price point.

The Orange Pi 5 single board computer was announced last year and went up for pre-ordering at the end of 2022.... When it comes to the software support, among the officially available options for the Orange Pi 5 are Orange Pi OS, Ubuntu, Debian, Android, and Armbian. Other ARM Linux distributions will surely see varying levels of support while even the readily available ISO selection offered by Orange Pi is off to a great start....

Granted, the Orange Pi developer community isn't as large as that of the Raspberry Pi community or the current range of accessories and documentation, but for those more concerned about features and performance, the Orange Pi 5 is extremely interesting.
The article includes Orange Pi 5 specs:

• A 26-pin header
• HDMI 2.1, Gigabit LAN, M.2 PCIe 2.0, and USB3 connectivity
• A Mali G510 MP4 graphics processor, "which has open-source driver hope via the Panfrost driver stack."
• Four different versions with 4GB, 8GB, 16GB, or 32GB of RAM using LPDDR4 or LPDDR4X. "The Orange Pi 4GB retails for ~$88, the Orange Pi 5 8GB version retails for $108, and the Orange Pi 5 16GB version retails for $138, while as of writing the 32GB version wasn't in stock."

In 169 performance benchmarks (compared to Raspberry Pi 4 boards), "this single board computer came out to delivering 2.85x the performance of the Raspberry Pi 400 overall." And through all this the average SoC temperature was 71 degrees with a peak of 85 degrees — without any extra heatsink or cooling.

OpenAI took ChatGPT offline earlier this week "due to a bug in an open-source library which allowed some users to see titles from another active user's chat history," according to an OpenAI blog post. "It's also possible that the first message of a newly-created conversation was visible in someone else's chat history if both users were active around the same time....

"Upon deeper investigation, we also discovered that the same bug may have caused the unintentional visibility of payment-related information of 1.2% of the ChatGPT Plus subscribers who were active during a specific nine-hour window." In the hours before we took ChatGPT offline on Monday, it was possible for some users to see another active user's first and last name, email address, payment address, the last four digits (only) of a credit card number, and credit card expiration date. Full credit card numbers were not exposed at any time.

We believe the number of users whose data was actually revealed to someone else is extremely low. To access this information, a ChatGPT Plus subscriber would have needed to do one of the following:

- Open a subscription confirmation email sent on Monday, March 20, between 1 a.m. and 10 a.m. Pacific time. Due to the bug, some subscription confirmation emails generated during that window were sent to the wrong users. These emails contained the last four digits of another user's credit card number, but full credit card numbers did not appear. It's possible that a small number of subscription confirmation emails might have been incorrectly addressed prior to March 20, although we have not confirmed any instances of this.

- In ChatGPT, click on "My account," then "Manage my subscription" between 1 a.m. and 10 a.m. Pacific time on Monday, March 20. During this window, another active ChatGPT Plus user's first and last name, email address, payment address, the last four digits (only) of a credit card number, and credit card expiration date might have been visible. It's possible that this also could have occurred prior to March 20, although we have not confirmed any instances of this.


We have reached out to notify affected users that their payment information may have been exposed. We are confident that there is no ongoing risk to users' data. Everyone at OpenAI is committed to protecting our users' privacy and keeping their data safe. It's a responsibility we take incredibly seriously. Unfortunately, this week we fell short of that commitment, and of our users' expectations. We apologize again to our users and to the entire ChatGPT community and will work diligently to rebuild trust.

The bug was discovered in the Redis client open-source library, redis-py. As soon as we identified the bug, we reached out to the Redis maintainers with a patch to resolve the issue.
"The bug is now patched. We were able to restore both the ChatGPT service and, later, its chat history feature, with the exception of a few hours of history."

More than 126,000 Californians are without electricity, reports ABC News. But Reuters notes that meanwhile "more than 400,000 customers of Detroit based DTE Energy remained without power on Saturday, the Detroit News reported," suffering through "a separate storm that clobbered the U.S. Plains, Midwest and Great Lakes regions earlier this week" that finally moved over the Atlantic.

And ABC News notes that as of Saturday morning, "more than 30 million Americans are under weather alerts in the West" — roughly 1 in 11 Americans — "ranging from blizzard warnings in the mountains near Los Angeles to wind chill alerts in the Northern Plains" near Wyoming. But California's problems came from its own major storm that delivered heavy snow, record rainfall, and damaging winds — a storm that "will be moving from southern California across the entire country over the next few days, eventually moving northeast by Tuesday." The Los Angeles area saw record rainfall on Friday, and it came along with 50- to 70-mile-per-hour winds. Burbank, California, saw 4.6 inches of rain Friday — stranding cars in floods and causing dozens of flight delays and cancellations. Records for daily rainfall were also set at the Los Angeles International Airport and the cities of Fresno, Bakersfield, Modesto and Oxnard.... Multiple stretches of I-5 in Los Angeles County were shuttered on Saturday due to rain and snow.
Snowflakes even fell around the "Hollywood" sign, reports Reuters. But bad weather wasn't just hitting southern California: In Northern California, San Francisco was expected to experience record cold temperatures on Saturday, and the National Weather Service warned residents of the state capital of Sacramento to avoid travel from Sunday through Wednesday as rain and snow started up again after a reprieve on Saturday. "Extreme impacts from heavy snow & winds will cause extremely dangerous to impossible driving conditions & likely widespread road closures & infrastructure impacts!" the agency said on Twitter. The next set of storms, expected to hit on Sunday, will bring wind gusts of up to 50 miles per hour (80 kph) in the Sacramento Valley, and up to 70 miles per hour in the nearby Sierra Nevada mountains....

A massive low-pressure system driven from the Arctic was responsible for the unusual conditions, said Bryan Jackson, a forecaster at the NWS Weather Prediction Center in College Park, Maryland.
This week one political cartoonist suggested a connection between "crazy weather" and climate change.

When shaken and chilled to minus 320 degrees Fahrenheit, ordinary frozen water "turns into something different," reports the New York Times, "a newly discovered form of ice made of a jumble of molecules with unique properties." The ice of our everyday lives consists of water molecules lined up in a hexagonal pattern, and those hexagonal lattices neatly stack on top of each other.... With permutations of temperature and pressure outside what generally occurs on Earth, water molecules can be pushed into other crystal structures.

"This is completely unexpected and very surprising," said Christoph Salzmann, a chemistry professor at University College London in England and an author of a paper published on Thursday in the journal Science that described the ice.... The new discovery shows, once again, that water, a molecule without which life is not known to be able to exist, is still hiding scientific surprises yet to be revealed. This experiment employed relatively simple, inexpensive equipment to reveal a form of ice that could exist elsewhere in the solar system and throughout the universe.
And according to LiveScience, the new form of ice has some unusual properties: Among them, Salzmann said, is that when the researchers compressed the medium-density ice and heated it to minus 185 F (minus 120 C), the ice recrystallized, releasing a large amount of heat. "With other forms of [amorphous] ice, if you compress them and you release the pressure, it's like nothing happened," Salzmann said. "But the MDA [medium-density amorphous ice] somehow has this ability to store the mechanical energy and release it through heating."

Medium-density amorphous ice might occur naturally on the ice moons of gas giant planets, Salzmann said, where the gravitational forces of the enormous worlds compress and shear the moons' ice. If so, the mechanical energy stored in this form of ice could influence the tectonics on these Hoth-like moons....

Scientists still debate the nature of water at extremely low temperatures. Any debate now needs to take into account medium-density amorphous ice, Salzmann said.
Thanks to long-time Slashdot reader fahrbot-bot for submitting the article.

As farmers in Europe and across the world grapple with increases in the cost of fertilizers, researchers suggest a solution may be closer to home in what people flush down the toilet. From a report: A peer-reviewed paper by scientists in Europe published Monday in the journal Frontiers in Environmental Science found that fertilizer made from human feces and urine is safe to use, and that only extremely tiny quantities of chemicals from medicines or drugs, for example, would get into the food. Governments worldwide are struggling to keep fertilizer costs manageable and increase self-sufficiency after Russia's invasion of Ukraine drove up prices of natural gas, a key feedstock for crop nutrients. European Union authorities are considering ways to speed up development of manure-based fertilizers after the surge in costs spurred anger among the bloc's farmers.

In terms of safety, the researchers screened human waste for 310 chemicals, from pharmaceuticals to insect repellents, and found that only 6.5% of these were above the limit for detection and at low concentrations. "In general, the risk for human health of pharmaceutical compounds entering the food system by means of fecal compost use, seems low," the authors concluded. While they detected two pharmaceutical products in edible parts of cabbages, the painkiller ibuprofen and the anticonvulsant drug carbamazepine, the concentrations were markedly low. This means that more than half a million cabbage heads would need to be eaten to accumulate a dose equivalent to one carbamazepine pill, they said.

During the CES 2023 in Las Vegas today, Asus announced an upcoming feature that allows users to view and work with content in 3D without wearing 3D glasses. Ars Technica reports: Similar technology has been used in a small number of laptops and displays before, but Asus is incorporating the feature for the first time in OLED laptop screens. Combined with high refresh rates, unique input methods like an integrated dial, and the latest CPUs and laptop GPUs, the company is touting the laptops with the Asus Spatial Vision feature as powerful, niche options for creative professionals looking for new ways to work.

Asus' Spatial Vision 3D tech is debuting on two laptops in Q2 this year: the ProArt Studiobook 16 3D OLED (H7604) and Vivobook Pro 16 3D OLED (K6604). The laptops each feature a 16-inch, 3200x2000 OLED panel with a 120 Hz refresh rate. The OLED panel is topped with a layer of optical resin, a glass panel, and a lenticular lens layer. The lenticular lens works with a pair of eye-tracking cameras to render real-time images for each eye that adjust with your physical movements. In a press briefing, an Asus spokesperson said that because the OLED screens claim a low gray-to-gray response time of 0.2 ms, as well as the extremely high contrast that comes with OLED, there's no crosstalk between the left and right eye's image, ensuring more realistic looking content. However, Asus' product pages for the laptops acknowledge that experiences may vary, and some may still suffer from "dizziness or crosstalk due to other reasons, and this varies according to the individual." Asus said it's looking to offer demos to users, which would be worth trying out before committing to this unique feature.

On top of the lenticular lens is a 2D/3D liquid crystal switching layer, which is topped with a glass front panel with an anti-reflective coating. According to Asus, it'll be easy to switch from 2D mode to 3D and back again. When the laptops aren't in 3D mode, their display will appear as a highly specced OLED screen, Asus claimed. The laptops can apply a 3D effect to any game, movie, or content that supports 3D. However, content not designed for 3D display may appear more "stuttery," per a demo The Verge saw. The laptops are primarily for workers working with and creating 3D models and content, such as designers and architects. The two laptops will ship with Spatial Vision Hub software. It includes a Model Viewer, Player for movies and videos, Photo Viewer for transforming side-by-side photos shot with a 180-degree camera into one stereoscopic 3D image, and Connector, a plug-in that Asus' product page says is compatible with "various apps and tools, so you can easily view any project in 3D."

An anonymous reader shares a report: Deep brain stimulation is already used to treat severe cases of epilepsy and a few movement disorders such as Parkinson's. But depression is more complicated -- partly because we still don't fully understand what's going on in the brain when it occurs. "Depression is a complex illness," says Patricio Riva Posse, a neurologist at the Emory School of Medicine in Atlanta, Georgia, who was not involved in the trial. "It's not like trying to correct one tremor -- there's a whole universe of symptoms." These include low mood, suicidality, inability to experience pleasure, and changes in motivation, sleep, and appetite.

Doctors have been using electricity to treat brain disorders -- including depression -- for decades, and some studies have found that electrodes placed deep inside the brain can jolt some people out of their symptoms. But results vary. Neuroscientists hope that by getting a better idea of what's happening inside the brains of people with symptoms like John's, they can make the treatment more effective. John is one of five people who have volunteered to have their brains probed as part of a clinical trial. At the start of 2020, he had a total of 14 electrodes implanted across his brain. For nine days, he stayed in a hospital with protruding cables wrapped around his head, while neuroscientists monitored how his brain activity correlated with his mood.

The researchers behind the trial say they have developed a "mood decoder" -- a way of being able to work out how someone is feeling just by looking at brain activity. Using the decoder, the scientists hope to be able to measure how severe a person's depression is, and target more precisely where the electrodes are placed to optimize the effect on the patient's mood. So far, they have analyzed the results of three volunteers. What they have found is extremely promising, says Sameer Sheth, a neurosurgeon based at Baylor College of Medicine in Houston, Texas, who is leading the trial. Not only have he and his colleagues been able to link volunteers' specific brain activity with their mood, but they have also found a way to stimulate a positive mood. "This is the first demonstration of successful and consistent mood decoding of humans in these brain regions," says Sheth. His colleague Jiayang Xiao presented the findings at the Society for Neuroscience's annual meeting in San Diego in November.

An anonymous reader quotes a report from New Scientist: A nuclear fusion reaction has lasted for 30 seconds at temperatures in excess of 100 million degrees celsius. While the duration and temperature alone aren't records, the simultaneous achievement of heat and stability brings us a step closer to a viable fusion reactor -- as long as the technique used can be scaled up. [...] Now Yong-Su Na at Seoul National University in South Korea and his colleagues have succeeded in running a reaction at the extremely high temperatures that will be required for a viable reactor, and keeping the hot, ionized state of matter that is created within the device stable for 30 seconds.

Controlling this so-called plasma is vital. If it touches the walls of the reactor, it rapidly cools, stifling the reaction and causing significant damage to the chamber that holds it. Researchers normally use various shapes of magnetic fields to contain the plasma -- some use an edge transport barrier (ETB), which sculpts plasma with a sharp cut-off in pressure near to the reactor wall, a state that stops heat and plasma escaping. Others use an internal transport barrier (ITB) that creates higher pressure nearer the center of the plasma. But both can create instability. Na's team used a modified ITB technique at the Korea Superconducting Tokamak Advanced Research (KSTAR) device, achieving a much lower plasma density. Their approach seems to boost temperatures at the core of the plasma and lower them at the edge, which will probably extend the lifespan of reactor components.

Dominic Power at Imperial College London says that to increase the energy produced by a reactor, you can make plasma really hot, make it really dense or increase confinement time. "This team is finding that the density confinement is actually a bit lower than traditional operating modes, which is not necessarily a bad thing, because it's compensated for by higher temperatures in the core," he says. "It's definitely exciting, but there's a big uncertainty about how well our understanding of the physics scales to larger devices. So something like ITER is going to be much bigger than KSTAR". Na says that low density was key, and that "fast" or more energetic ions at the core of the plasma -- so-called fast-ion-regulated enhancement (FIRE) -- are integral to stability. But the team doesn't yet fully understand the mechanisms involved. The reaction was stopped after 30 seconds only because of limitations with hardware, and longer periods should be possible in future. KSTAR has now shut down for upgrades, with carbon components on the wall of the reactor being replaced with tungsten, which Na says will improve the reproducibility of experiments. The research has been published in the journal Nature.

Sociologist Ashley Mears know the secret to making viral videos on Facebook. "It's like a magic trick," one creator explains. Literally.

"Many of the most successful people in the content-creation game on Facebook are magicians," Mears explains in a video. "I think that that's not such a surprise, because magicians are extremely skilled in manipulating people's attention, which is basically what the viral video economy does."

Mears recently visited the "new creative elites," a group of creators regularly getting 100 million to 200 million views, which includes former jazz singer Anna Rothfuss and her magician boyfriend Justin Flom: Rothfuss and Flom are among the 180 video-makers (or "creators" in the industry's jargon) working with a Las Vegas magician called Rick Lax. They produce short videos timed to last the precise number of seconds that Facebook requires a clip to run to be eligible for an ad (this used to be three minutes but recently went down to one). Though the clips usually look like authentic user-generated material, all are scripted. Most fall into genres: diy, crafts, hazards, adultery and proposals. Lax manages his network like a cross between a Hollywood agent and a schoolteacher. He takes a slice of the ad revenue that creators earn. In exchange, he gives them online tutorials about how to make viral content: everything from how to hold the camera to which metrics matter to Facebook. He releases new instructions every time the algorithm changes substantially, and offers feedback on people's videos. He also posts his creators' videos on his own Facebook page, which has 14m followers....

A friend was making videos for Rick Lax, and invited Rothfuss to join in 2019. A year later she bought her first mansion. Entering the viral-content game involves a certain surrendering of artistic aspirations, but Rothfuss says she doesn't care. "I do not want to be famous," she says. "I love being low-key and flying under the radar, and just getting rich...."

Lax realised that appetite for these videos was insatiable: the only obstacle to earning more money was how many clips he could make in a day.... Lax wouldn't go into details of his profit-sharing arrangement but his creators are clearly flourishing. Many told me they felt like they were taking part in a 21st-century gold rush. "This doesn't happen to that many people," says Amy Boiss, a one-time Uber driver whose magician boyfriend introduced her to Lax's network. "To make more money than neurosurgeons...." Lax and his friends got rich without anyone knowing who they are....

It's perhaps no coincidence that the two most-viewed Facebook creators in 2021, Lax and Julius Dein, both started out as magicians (as did many of their affiliates). Their videos aren't magic performances as such, but they're informed by the art of magic. "Magicians start by looking for blind spots, edges, vulnerabilities and limits of people's perception," wrote a former Google employee (and amateur magician) in an essay published on Medium in 2017, "How technology hijacks your mind". Social-media companies, wrote the author, "influence what people do without them even realising it", just as magicians do: "Once you know how to push people's buttons you can play them like a piano."
Ironically, the creators end up driven by "the same dopamine rush they were exploiting in us," the article points out. "If you're looking at the data, you can actually see your earnings go up as people watch your work: making viral videos can be just as addictive as watching them."

One of the magicians in Lax's network even says point-blank that "It feels like a drug."

An anonymous reader quotes a report from Phys.Org: Scientists at the University of Virginia School of Medicine and their collaborators have used DNA to overcome a nearly insurmountable obstacle to engineer materials that would revolutionize electronics. One possible outcome of such engineered materials could be superconductors, which have zero electrical resistance, allowing electrons to flow unimpeded. That means that they don't lose energy and don't create heat, unlike current means of electrical transmission. Development of a superconductor that could be used widely at room temperature -- instead of at extremely high or low temperatures, as is now possible -- could lead to hyper-fast computers, shrink the size of electronic devices, allow high-speed trains to float on magnets and slash energy use, among other benefits.

One such superconductor was first proposed more than 50 years ago by Stanford physicist William A. Little. [...] One possible way to realize Little's idea for a superconductor is to modify lattices of carbon nanotubes, hollow cylinders of carbon so tiny they must be measured in nanometers -- billionths of a meter. But there was a huge challenge: controlling chemical reactions along the nanotubes so that the lattice could be assembled as precisely as needed and function as intended.

[Edward H. Egelman, Ph.D., of UVA's Department of Biochemistry and Molecular Genetics] and his collaborators found an answer in the very building blocks of life. They took DNA, the genetic material that tells living cells how to operate, and used it to guide a chemical reaction that would overcome the great barrier to Little's superconductor. In short, they used chemistry to perform astonishingly precise structural engineering -- construction at the level of individual molecules. The result was a lattice of carbon nanotubes assembled as needed for Little's room-temperature superconductor. [...] The lattice they built has not been tested for superconductivity, for now, but it offers proof of principle and has great potential for the future, the researchers say. The findings have been published in the journal Science.

A report from the Federal Reserve Bank of Chicago analyzed data from a moving company, concluding that 59.4% of the moves in California were out of the state — the second-highest percentage for any state in America (behind only Illinois). And that percentage is growing, reports the Los Angeles Times, since between 2018 and 2019, California had a lower outbound move rate of just 56%. Citing changes in work-life balance, opportunities for remote work and more people deciding to quit their jobs, the report found that droves of Californians are leaving for states like Texas, Virginia, Washington and Florida. California lost more than 352,000 residents between April 2020 and January 2022, according to California Department of Finance statistics [about 15,476 per month].

San Francisco and Los Angeles rank first and second in the country, respectively, for outbound moves as the cost of living and housing prices continue to balloon and homeowners flee to less expensive cities, according to a report from Redfin released this month. [Los Angeles residents] in particular, are flocking to places like Phoenix, Las Vegas, San Diego, San Antonio and Dallas. The number of Los Angeles residents leaving the city jumped from around 33,000 in the second quarter of 2021 to nearly 41,000 in the same span of 2022, according to the report.

California has grappled with extremely high housing prices compared with other states, according to USC economics professor Matthew Kahn. Combined with the pandemic and the rise in remote work, privileged households relocated when they had the opportunity. "People want to live here, but an unintended consequence of the state's environmentalism is we're not building enough housing in desirable downtown areas," Kahn said. "That prices out middle-class people to the suburbs [and creates] long commutes. We don't have road pricing to help the traffic congestion, and these headaches add up. So when you create the possibility of work from home, many of these people ... they say 'enough' and they move to a cheaper metropolitan area." Kahn also pointed out that urban crime, a growing unhoused population, public school quality and overall quality of life are driving out residents.

"In New York City, but also in San Francisco, there are all these fights about which kids get into which elite public schools," he said. "The rich are always able to hide in their bubble, but if the middle class looks at this quality of life declining, that's a push factor to leave."

Redfin chief economist Daryl Fairweather cited a June report that tracked the change in spending power of a homebuyer on a $2,500 monthly budget. While 11.2% of homes in Los Angeles were affordable on that budget, using a 3% interest rate, that amount swelled to about 72% in Houston and about 50% in Phoenix. "It's really an affordability problem," Fairweather said. "California for the longest time has prioritized single-family zoning, which makes it so people stay in their homes longer because their property taxes don't reflect the true value. California is the epicenter of where the housing shortage is so people have no choice but to move elsewhere."
The Times also notes figures from the Public Policy Institute of California showing that the state's population did increase between 2010 and 2020 — but by just 5.8%, "below the national growth rate of 6.8%, and resulting in the loss of a congressional seat in 2021 for the first time in the state's history."

At least part of this seems tied to a sudden curtailing of immigration into California. UCLA economics professor Lee Ohanian points out that immigration had offset California's population outflow over the past two decades, but "Delays in processing migration requests to the U.S. were compounded during the pandemic, resulting in the lowest levels of immigration in decades, according to U.S. Census Bureau data. Estimates showed a net increase of 244,000 new immigrants between 2020 and 2021 — roughly half the 477,000 new immigrant residents recorded between 2019 and 2020 and a drastic reduction from more than 1 million reported from 2015 to 2016." The state is also seeing a dwindling middle class, said Ohanian, who cited a report from the National Association of Realtors, outlining that the national median home sales price has reached $416,000, a record high. Meanwhile, California's median home price has topped $800,000. "(California is) at a risk for becoming a state for very, very wealthy people and very, very low earners who receive state and local and federal aid that allows them to be able to live here," Ohanian said. "We should worry about those in the middle who are earning that $78,000 household median income and is, at the end of the day, really struggling, especially if they have interest in buying a home."

An anonymous reader quotes a report from the Washington Post: China's latest launch of a huge rocket is, once again, raising alarm that the debris will crash into the Earth's surface in an uncertain location and at great speed. On Sunday afternoon local time, the Long March 5B blasted off from the Wenchang launch site on the southern island province of Hainan, carrying a solar-powered new lab, the Wentian experiment module, to be added to China's Tiangong Space Station. But the size of the heavy-lift rocket -- it stands 53.6 meters (176 feet) tall and weighs 837,500 kilograms (more than 1.8 million pounds) -- and the risky design of its launch process have led experts to fear that some debris from its core stage could fail to burn up as it reenters Earth's atmosphere.

As with two previous launches, the rocket shed its empty 23-ton first stage in orbit, meaning that it will continue to loop the Earth over coming days as it gradually comes closer to landing. This flight path is difficult to predict because of fluctuations in the atmosphere caused by changes in solar activity. Although experts consider the chances of debris hitting an inhabited area very low, many also believe China is taking an unnecessary risk. After the core stage of the last launch fell into the Indian Ocean, NASA Administrator Bill Nelson said China was "failing to meet responsible standards regarding their space debris," including minimizing risks during reentry and being transparent about operations. China rejects accusations of irresponsibility. In response to concerns about last year's launch, the Chinese Foreign Ministry said the likelihood of damage was "extremely low."

Many scientists agree with China that the odds of debris causing serious damage are tiny. An article published in the journal Nature Astronomy this month put the chance that, under current launch practices, someone would die or be injured from parts of a rocket making an uncontrolled reentry at 1 in 10 over the next decade. But many believe launch designs like the Long March 5B's are an unnecessary risk. "Launch providers have access to technologies and mission designs today that could eliminate the need for most uncontrolled re-entries," the authors wrote. They proposed global safety standards mandating controlled reentry.
UPDATE: It crashed into the Indian Ocean.