After Dell's new Compression Attached Memory Module (CAMM) leaked out last week, several tech sites led many to believe that the company was taking a path to "lock out users upgrades." However, according to PCWorld citing both the person who designed and patented the CAMM standard, as well as the product manager of the first Dell Precision laptop to feature it, "the intent of the new memory module standard is to head-off looming bandwidth ceilings in the current SO-DIMM designs." They claim that CAMM could increase performance, improve reliability, aid user upgrades, and eventually lower costs too. From the report: Most of the internet hot takes last week, however, reacted to CAMM being proprietary, which is typically viewed as a method to lock people into buying upgrades only from one company. Dell officials, however, insist that's not the case at all. "One of the tenants of the PC industry is standards," said Dell's Tom Schnell, the Senior Distinguished Engineer who designed much of it. "We believe in that; we put standards into our products. We're not keeping it to ourselves, we hope it becomes the next industry standard."

Schnell said that Dell isn't making the modules and has worked with memory companies as well as Intel on this. In the future, a person with a CAMM-equipped laptop will be able to buy RAM from any third party and install it in the laptop. Yes, initially, Dell will likely be the only place to get CAMM upgrades, but that should change as the standard scales up and is adopted by other PC makers. The new memory modules are also built using commodity DRAMs just like conventional SO-DIMMs.

In fact, Dell points out, it's not even "proprietary" on its own laptops. The first Precision workstations that come with CAMM will also eventually be offered with conventional SO-DIMMs using an interposer. Mano Gialusis, product manager for Precision workstations, said the interposer option goes into the same CAMM mount, too. With CAMM now a reality, Dell's next step is to get it in front of JEDEC, the memory standards organization, to make it available to others, he said. Why not create a standard from scratch? Schnell said its far easier to get a standard minted once it's proven to work rather than trying to simply create something anew every time. The report goes on to say that Dell does hold patents on the CAMM design "and there will be royalties," but "no standard can go forward through JEDEC unless the licensing is not anti-competitive, is reasonably priced, and cannot discriminate against a company."

An anonymous reader quotes a report from Phys.Org: Don't be fooled by the name. While 3D printers do print tangible objects (and quite well), how they do the job doesn't actually happen in 3D, but rather in regular old 2D. Working to change that is a group of former and current researchers from the Rowland Institute at Harvard. [...] The researchers present a method to help the printers live up to their names and deliver a "true" 3D form of printing. In a new paper in Nature, they describe a technique of volumetric 3D printing that goes beyond the bottom-up, layered approach. The process eliminates the need for support structures because the resin it creates is self-supporting.

The key component in their novel design is turning red light into blue light by adding what's known as an upconversion process to the resin, the light reactive liquid used in 3D printers that hardens into plastic. In 3D printing, resin hardens in a flat and straight line along the path of the light. Here, the researchers use nano capsules to add chemicals so that it only reacts to a certain kind of light -- a blue light at the focal point of the laser that's created by the upconversion process. This beam is scanned in three dimensions, so it prints that way without needing to be layered onto something. The resulting resin has a greater viscosity than in the traditional method, so it can stand support-free once it's printed.

"We designed the resin, we designed the system so that the red light does nothing," Congreve said. "But that little dot of blue light triggers a chemical reaction that makes the resin harden and turn into plastic. Basically, what that means is you have this laser passing all the way through the system and only at that little blue do you get the polymerization, [only there] do you get the printing happening. We just scan that blue dot around in three dimensions and anywhere that blue dot hits it polymerizes and you get your 3D printing." The researchers used their printer to produce a 3D Harvard logo, Stanford logo, and a small boat, a standard yet difficult test for 3D printers because of the boat's small size and fine details like overhanging portholes and open cabin spaces.

An anonymous reader quotes a report from Peoples Dispatch: Mexico has officially nationalized its lithium industry. On April 21, the bill, proposed by President Andres Manuel Lopez Obrador (AMLO), that modified the mining law to give the state the exclusive right to explore, exploit and use the valuable metal entered into force. According to the law, published in the Official Gazette of the Federation, the executive or the president now has 90 days to create a decentralized state company that will deal with all lithium-related matters. [...] The new mining law recognizes lithium as a heritage of the nation, and reserves it for the benefit of the people of Mexico. It elevates lithium to the category of "strategic mineral," and prohibits granting concessions, licenses, contracts, permits, assignments or authorizations for its exploitation to private corporations.

The president emphasized that lithium is a strategic element for the development of the nation, and its effective exploitation can contribute to economic growth. He said that his administration would work to develop necessary technology to take the best advantage of their lithium, ensuring that it does not harm the health of the population, the environment, or the rights of Indigenous people. He also took the opportunity to reiterate that his administration would review all lithium contracts. He requested that the shareholders and managers of the companies and corporations begin to establish a dialogue with their legal representatives. There is only one lithium mine in Mexico, operated by Chinese firm Ganfeng Lithium, which is slated to produce 35,000 tons of the metal per year starting in 2023. In the coming days, it will be discussed if that will be taken over by the government.

Meanwhile, the right-wing opposition criticized nationalization of lithium. Some legislators from the opposition National Action Party (PAN) and Institutional Revolutionary Party (PRI), who voted against the reform, said that it would severely affect the development in the mining of the metal, arguing that the Mexican government has no experience in mining lithium. Others criticized that it violated the United States-Mexico-Canada Agreement and would bring trade tensions. Nevertheless, the people of Mexico have expressed their approval of the president and his policies. A number of social organizations and trade unions have praised the president and the ruling center-left MORENA party, recalling that the nationalization of lithium in Bolivia during former president Evo Morales' rule helped the country achieve high levels of economic and social growth. "Lithium is considered an important resource due to its importance for the development of batteries used for electric cars," notes the report. "According to data from the US Geological Survey, Mexico has 1.7 million tons of lithium mining reserves."

According to Bloomberg's Mark Gurman, Apple is already working on an M3 iMac, along with refreshed MacBooks and a Mac Mini running an M1 Pro chip. He also said the iMac Pro isn't dead, though it's not expected to arrive "anytime soon." From the report: Add an M3-based iMac to your list of future models. Last week, I detailed Apple's road map for the M2 chip and Mac. The plans include: An M2 chip for a new MacBook Air, entry-level MacBook Pro and Mac mini; M2 Pro and M2 Max chips for a new 14-inch MacBook Pro and 16-inch MacBook Pro; and A dual M2 Ultra chip for the Mac Pro.

Since then, I've heard that the M2 chips aren't the only ones in testing within Apple. And if you're waiting for a new iMac, I'm hearing an M3 version of that desktop is already in the works -- though I imagine it won't launch until the end of next year at the earliest. Also, for those asking, I still think an iMac Pro is coming. It just won't be anytime soon. Gurman also wrote about what we can expect to see with the iPhone 14. "First off, the overall design from the iPhone 12 and iPhone 13 will stick around another year. [...] There will also be larger camera bumps to fit in new sensors."

"That notch will include a pill-shaped cutout for Face ID and a circular cutout for the camera," adds Gurman. "That will be Apple's solution until it's able to fully embed Face ID and the front-facing camera into the display itself. That's still at least three or four years away." There's also going to be a slight shake-up with the iPhone's screen sizes, with the non-Pro iPhone line getting a 6.7-inch screen option.

Interestingly, the company is "still working on bringing satellite connectivity to the iPhone" to gain the ability to make calls over satellite networks. "The company first aimed at adding the feature in last year's model, but now the capability could be ready this time around," wrote Gurman.

Tesla confirmed that nearly half of all its vehicles produced last quarter are already using cobalt-free iron-phosphate (LFP) batteries. Electrek reports: Over the last few years, CEO Elon Musk has said multiple times that Tesla plans to shift more electric cars to LFP batteries in order to overcome nickel and cobalt supply concerns. Iron phosphate (LFP) batteries, which don't use nickel or cobalt, are traditionally cheaper and safer, but they offer less energy density, which means less efficient and shorter range for electric vehicles. However, they have improved enough recently that it now makes sense to use cobalt-free batteries in lower-end and shorter-range vehicles. It also frees up the production of battery cells with other, more energy-dense chemistries to produce more longer-range vehicles.

Tesla already moved its Standard Range Model 3 and Model Y produced in China to LFP cells. Last year, Tesla also announced it is "shifting to Lithium Iron Phosphate (LFP) battery chemistry globally" for "standard range vehicles." It confirmed that the automaker planned to switch the Model 3 Standard Range, also known as Model 3 Rear-Wheel-Drive, being produced in the Fremont factory to LFP cells, too.

Now with the release of Tesla's Q1 2022 financial results, Tesla confirmed that nearly half of all vehicles produced are now using LFP batteries: "Diversification of battery chemistries is critical for long-term capacity growth, to better optimize our products for their various use cases and expand our supplier base. This is why nearly half of Tesla vehicles produced in Q1 were equipped with a lithium iron phosphate (LFP) battery, containing no nickel or cobalt. Currently, LFP batteries are used in most of our standard range vehicle products, as well as commercial energy storage applications. As a result of our energy efficient motors, a Model 3 with an LFP battery pack can still achieve a 267-mile EPA range." This would mean that roughly half of Tesla's volume comes from Model 3 Rear-Wheel-Drive, the cheapest Tesla vehicle, and the Model Y Standard Range, which is only offered in China.

"As housing prices across the country continue to skyrocket, an Iowa-based company, Alquist 3D, is looking to combat the crisis by 3D-printing homes," reports NexStar Media: Alquist, one of a few U.S. companies that 3D-prints houses, is looking to build 200 of these homes in Virginia starting this summer.

The process is somewhat simple. First, a person designs what they want the frame of the house to look like by using a computer program. Then, a file is transmitted to a machine, which tells it what to do and how to move. On-site workers pour in cement material, then the concrete is pumped through the tubes and dispersed in layers...

Zachary Mannheimer, founder and CEO of Alquist 3D, believes 3D-printing is a game changer because it cuts costs up to 15% by scaling back labor, materials, and time. He does understand that there are concerns about displacing traditional construction jobs, and some environmental impacts of this method, but he says he is working to attack those issues.

Solar and wind power are "intermittent," points out Slashdot reader silverjacket . "A feature in this week's issue of The New Yorker highlights current efforts to use gravity, heat, momentum, air pressure, and other methods to store large amounts of energy for the electricity grid."

In other words, alternatives to massive lithium-ion batteries: Quidnet [has] patented a new kind of pumped hydro. Instead of pumping water uphill, the company's system sends it underground through a pipe reaching at least a thousand feet down. Later, the system lets the Earth squeeze the water back up under pressure, using it to drive generators. Wright and Craig are veterans of the oil and gas industry, and Quidnet's technology is like a green riff on fracking.... Initially, Quidnet encountered skepticism about its ability to form lenses of the right size and shape. By the time I visited, however, it had successfully completed multiple pumping cycles in Texas, Ohio, and Alberta. The company has received thirty-eight million dollars in private and government funding, including contributions from Breakthrough Energy Ventures, established by Bill Gates.
The New Yorker science/technology writer also interviewed Bill Gross, a longtime investor in solar power and a co-founder of his own energy-storage company called Energy Vault. He points an inconvenient truth: "it actually costs more to store electricity than to make it." In many cases, solar and wind have become less expensive than coal and gas. But add the cost of storage, and renewables can lose to fossil fuels.
But he's working on his own solution... Energy Vault's first attempt at a system was EV1, a looming, Transformer-like tower crane with six arms. The idea was that such a crane would stack blocks in a wall around itself, then unstack them.... [T]he company moved on to a new, enclosed design, called EVx. In renderings, it resembles a boxy automated warehouse forty stories tall. Elevators will use clean power to lift blocks weighing as much as thirty tons and put them on trolleys, which will move them toward the middle of the structure. When energy is needed, the blocks will be moved back to the elevators. As they descend, the elevators will power generators, producing new electricity... The EVx demo is being developed in a bucolic Swiss mountain valley in the shadow of EV1...

[T]he company isn't alone in pursuing what's known as "gravity storage." Gravitricity, based in Scotland, recently concluded a demonstration that involved hefting a fifty-ton block up a tower, two stories at a time; it now plans to raise and lower single, thousand-ton blocks inside disused mine shafts. Two other companies, Gravity Power, in California, and Gravity Storage GmbH, in Hamburg, aim to place a massive weight at the bottom of a shaft and then pump water underneath to lift it. To withdraw energy, they'll let the weight push the water down into a pipe and through a turbine. RheEnergise, based in Montreal, has come up with yet another take on pumped hydro, centered on a fluid that the company invented called R-19, which is two and a half times as dense as water; its system will move the fluid between tanks at the top and bottom of an incline. The work is still at the crowdfunding stage.

Just as you can store potential energy by lifting a block in the air, you can store it thermally, by heating things up. Companies are banking heat in molten salt, volcanic rocks, and other materials. Giant batteries, based on renewable chemical processes, are also workable. In so-called flow batteries, tanks can be used to manage electrolytes, which hold a charge. In hydrogen storage, electrolysis is used to separate hydrogen from oxygen in water; the hydrogen is then cached underground, or in aboveground tanks, as gas or liquid or part of ammonia. When it's recombined with oxygen in a fuel cell, it forms water again and releases electricity.
The article's last line? "Nature can help us generate power. Maybe it can help us hold on to it, too."

The governor of Michigan has announced America's first "public wireless in-road charging system," which would allow electric vehicles (EV) to charge — both while in motion and when stationary.

The GreenBiz site takes a look at this "inductive vehicle charging pilot program." There's perhaps no place more fitting for this pilot than Detroit. The city that led the nation's first wave of automobile technology is helping lead its second, as the Michigan Department of Transportation has awarded a $1.9 million contract to Electreon to install one mile of in-road EV charging in Motor City.

"Wireless is the future for this technology," said Stefan Tongur, vice president of business development for Electreon in the U.S. The wireless charging company is already building out the tech across Europe, where it has pilots in Germany, Italy and Sweden. The Michigan project is expected to be operational in 2023.

"We've always, for the past century, stopped to fuel the car, and we're thinking the same with EVs," Tongur said. But that creates many challenges when it comes to large-scale batteries and fleets especially, Tongur noted... So Electreon and others envision a network of strategic corridors with wireless, in-road charging that could gradually power vehicles along a route, rather than all at once at the destination. Fleet operators could either pay a subscription to use the chargers or integrate the costs into highway tolling, depending on the situation, Tongur said.

He described Electreon's business model as "charging as a service."
Alex Gruzen, CEO of wireless charging company WiTricity, tells the site this technology ultimately could accelerate the adoption of electric vehicles. "The company's own research indicates that wireless charging can increase a consumer's intent to purchase an EV by 68%, according to Gruzen, which could help move EVs beyond the early adopter stage."

Or, as Gruzen puts it, "What we want to do is show that the EV ownership experience can be better than any experience you've ever had with a car before."

Thanks to Slashdot reader doyouwantahotpocket for submitting the story.

"The U.S. is spending millions to explore a surprising source of untapped power," reports Recode, describing a new pilot program from America's Department of Energy" Geothermal energy works on a simple premise: The Earth's core is hot, and by drilling even just a few miles underground, we can tap into that practically unlimited heat source to generate energy for our homes and businesses without creating nearly as many of the greenhouse gas emissions that come from burning fossil fuels. However, drilling doesn't come cheap — it accounts for half the cost of most geothermal energy projects — and requires specialized labor to map the subsurface, drill into the ground, and install the infrastructure needed to bring energy to the surface.

But the US, in the wake of an oil and gas boom, just so happens to have millions of oil and gas wells sitting abandoned across the country. And oil and gas wells, it turns out, happen to share many of the same characteristics as geothermal wells — namely that they are deep holes in the ground, with pipes that can bring fluids up to the surface. So, the DOE asks, why not repurpose them?

That's exactly what the agency's pilot program, called Wells of Opportunity: ReAmplify, aims to do, awarding a total of $8.4 million to four projects across the country that will each try to tap into some of those old wells to extract geothermal energy rather than gas or oil. If they work, they could be the key to not only reducing the country's use of planet-damaging fossil fuels, but also helping answer the question of how to transition many of the more than 125,000 people who work in oil and gas extraction across the country into clean-energy jobs....

[T]he next year or so will be spent on planning and assessing the feasibility of turning oil wells into geothermal resources, after which energy generation will slowly ramp up. The biggest question is just how scalable these ideas are: One megawatt is, after all, a pittance compared to the country's energy needs.
"Some European countries already rely on direct use of geothermal energy on a large scale," the article points out.

Volcanically-active Iceland, for example, "uses its vast reserves of geothermal energy to heat 90 percent of its homes."

Thanks to Slashdot reader fahrbot-bot for submitting the story

The Associated Press files this report from Chernobyl, where invading tanks in February "churned up highly contaminated soil from the site of the 1986 accident that was the world's worst nuclear disaster..."

"Here in the dirt of one of the world's most radioactive places, Russian soldiers dug trenches. Ukrainian officials worry they were, in effect, digging their own graves." For more than a month, some Russian soldiers bunked in the earth within sight of the massive structure built to contain radiation from the damaged Chernobyl nuclear reactor. A close inspection of their trenches was impossible because even walking on the dirt is discouraged.... Maksym Shevchuck, the deputy head of the state agency managing the exclusion zone, believes hundreds or thousands of soldiers damaged their health, likely with little idea of the consequences, despite plant workers' warnings to their commanders. "Most of the soldiers were around 20 years old," he said....

The full extent of Russia's activities in the Chernobyl exclusion zone is still unknown, especially because the troops scattered mines that the Ukrainian military is still searching for. Some have detonated, further disturbing the radioactive ground. The Russians also set several forest fires, which have been put out.

Ukrainian authorities can't monitor radiation levels across the zone because Russian soldiers stole the main server for the system, severing the connection on March 2. The International Atomic Energy Agency said Saturday it still wasn't receiving remote data from its monitoring systems. The Russians even took Chernobyl staffers' personal radiation monitors....

When the Russians hurriedly departed March 31 as part of a withdrawal from the region that left behind scorched tanks and traumatized communities, they took more than 150 Ukrainian national guard members into Belarus. Shevchuck fears they're now in Russia. In their rush, the Russians gave nuclear plant managers a choice: Sign a document saying the soldiers had protected the site and there were no complaints, or be taken into Belarus. The managers signed.
The article includes more stories from Chernobyl's staff: Even now, weeks after the Russians left, "I need to calm down," the plant's main security engineer, Valerii Semenov, told The Associated Press. He worked 35 days straight, sleeping only three hours a night, rationing cigarettes and staying on even after the Russians allowed a shift change. "I was afraid they would install something and damage the system," he said in an interview....

Another Ukrainian nuclear plant, at Zaporizhzhia in southeastern Ukraine, remains under Russian control. It is the largest in Europe.
Long-time Slashdot reader MattSparkes also notes reports that researchers at Chernobyl "had been looking for bacteria to eat radioactive waste — but they now fear that their work was irreparably lost during the Russian invasion of the facility."

New Scientist reports (in a pay-walled article) that scientist Olena Pareniuk "was attempting to identify bacteria that could consume radioactive waste within Chernobyl's destroyed reactor before the Russian invasion. If her samples are lost it will likely be impossible to replace them."

If you ranked all U.S. companies by annual revenue, Occidental Petroleum comes in at #183.

But Wednesday this massive "hydrocarbon exploration" company "outlined plans to advance its clean energy transition business," reports Reuters, "including spending between $800 million and $1 billion on a facility to remove carbon dioxide (CO2) from the air." The proposed facility, the world's largest direct air capture (DAC) project, is set to begin construction in the second half of this year in the Permian basin, the largest U.S. oilfield, with a start in 2024. The U.S. oil and gas producer is aiming to build a profitable business from providing services and technologies that pull CO2 out of the air and burying it underground to advance government and business climate mitigation goals. This year's investments in the low carbon business will total $275 million, and the company plans to develop over time three carbon sequestration hubs that will be online by 2025 and another 69 smaller DAC facilities by 2035, it told investors....

Occidental's first DAC facility has a goal of removing 1 million tonnes of CO2 from the atmosphere per year — 100 times bigger than all 19 DAC plants currently operating worldwide combined, according to the International Energy Agency.

"There's just not going to be enough other alternatives for CO2 offsets," said Occidental Chief Executive Vicki Hollub. "So this is a sure opportunity." Executives did not say when they expect the business to turn a profit. DAC is currently not commercial on a large scale. "We expect that to play out over the next five to 10 years as we develop plants," Richard Jackson, Occidental's head of U.S. onshore resources and carbon management operations, told Reuters by phone. "The commerciality of those plants will be determined by mainly the market".
Last month Occidental announced that Airbus had already pre-purchased "400,000 tonnes of carbon removal credits from [Occidental's] planned first Direct Air Capture facility," specifically, "the capture and permanent sequestration of 100,000 tonnes of CO2 from the atmosphere each year for four years — with an option to secure more volume in the future."

Occidental called the deal "indicative of the availability of a feasible, affordable, and scalable decarbonization solution for aviation and other hard-to-abate industries."

The U.S. government "is launching a $6 billion effort to rescue nuclear power plants at risk of closing," reports the Associated Press, "citing the need to continue nuclear energy as a carbon-free source of power that helps to combat climate change." A certification and bidding process opened Tuesday for a civil nuclear credit program that is intended to bail out financially distressed owners or operators of nuclear power reactors, the U.S. Department of Energy told The Associated Press exclusively, shortly before the official announcement. It's the largest federal investment in saving financially distressed nuclear reactors... "U.S. nuclear power plants contribute more than half of our carbon-free electricity, and President Biden is committed to keeping these plants active to reach our clean energy goals," Energy Secretary Jennifer Granholm said in a statement. "We're using every tool available to get this country powered by clean energy by 2035, and that includes prioritizing our existing nuclear fleet to allow for continued emissions-free electricity generation and economic stability for the communities leading this important work...."

A dozen U.S. commercial nuclear power reactors have closed in the past decade before their licenses expired, largely due to competition from cheaper natural gas, massive operating losses due to low electricity prices and escalating costs, or the cost of major repairs. This has led to a rise in emissions in those regions, poorer air quality and the loss of thousands of high-paying jobs, dealing an economic blow to local communities, according to the Department of Energy. A quarter or more of the fleet is at risk, the Department of Energy added. The owners of seven currently operating reactors have already announced plans to retire them through 2025.... Twenty more reactors faced closure in the last decade before states stepped in to save them, according to the Nuclear Energy Institute , the industry's trade association.... Low electricity prices are the main cause of this trend, though federal and state policies to boost wind and solar have contributed as well, the NEI added.

There are 55 commercial nuclear power plants with 93 nuclear reactors in 28 U.S. states. Nuclear power already provides about 20% of electricity in the U.S., or about half the nation's carbon-free energy. If reactors do close before their licenses expire, fossil fuel plants will likely fill the void and emissions will increase, which would be a substantial setback, said Andrew Griffith, acting assistant secretary for nuclear energy at DOE. While natural gas may be cheaper, nuclear power hasn't been given credit for its carbon-free contribution to the grid and that has caused nuclear plants to struggle financially, Griffith added....

David Schlissel, at the Ohio-based Institute for Energy Economics and Financial Analysis, said he wishes the federal government, before it allocated the $6 billion, had analyzed whether that money might have been better spent on ramping up renewables, battery storage and energy efficiency projects, which can be done quickly and cheaply to displace fossil fuels.

A major industrial conglomerate has resorted to buying washing machines and tearing out the semiconductors inside for use in its own chip modules, according to the CEO of a company central to the chipmaking supply chain. From a report: ASML's Chief Executive Officer Peter Wennink remarked on the situation, without naming the conglomerate, during his company's earnings call Wednesday. The beleaguered firm relayed its struggle to him only the prior week, he said, signalling that chip shortages are going to persist for the foreseeable future, at least for some sectors. "The demand we are currently seeing comes from so many places in the industry," Wennink said, pointing to the wider adoption of Internet of Things (IoT) applications. "It's so widespread. We have significantly underestimated the width of the demand. That, I don't think, is going to go away." Even major chip equipment makers including US-based Lam Research are struggling to get enough components to fulfil orders, potentially making it more difficult for semiconductor fabs to significantly increase their capacity in the near term.

Rolls-Royce is to start building parts for its small modular nuclear reactors in anticipation of receiving regulatory approval from the British government by 2024, one of its directors has said. The Guardian reports: Paul Stein, the chairman of Rolls-Royce SMR, a subsidiary of the FTSE 100 engineering company, said he hoped to be providing power to the UK's national grid by 2029. Speaking to Reuters in an interview conducted virtually, Stein said the regulatory "process has been kicked off, and will likely be complete in the middle of 2024. We are trying to work with the UK government, and others to get going now placing orders, so we can get power on grid by 2029."

Small modular reactors (SMRs) are seen by their proponents as a way to build nuclear power plants in factories, a method that could be cheaper and quicker than traditional designs. The technology, based on the reactors used in nuclear submarines, is seen by Rolls-Royce as a potential earner far beyond any previous business such as jet engines or diesel motors. The government under Boris Johnson put nuclear power at the centre of its energy strategy announced earlier this month, in response to climate concerns and a desire to ditch Russian gas. SMRs are expected to play an important role in an expansion of nuclear to supply a quarter of the UK's energy needs. Lower costs would be crucial in justifying the nuclear push, given that onshore wind is seen as much cheaper and quicker to install.

For nearly two years, netting a PS5, Xbox Series X, or AMD Radeon and Nvidia RTX graphics cards without paying a fortune has been a matter of luck (or a lot of skill). At its peak, scalpers were successfully charging double or even triple MSRP for a modern GPU. But it's looking like the great GPU shortage is nearly over. From a report: In January, sites including Tom's Hardware reported that prices were finally beginning to drop, and drop they did; they've now dropped an average of 30 percent in the three months since. On eBay, the most popular graphics cards are only commanding a street price of $200-$300 over MSRP. And while that might still seem like a lot, some have fallen further: used Nvidia RTX 3080 Ti or AMD RX 6900 XT are currently fetching less than their original asking price, a sure sign that sanity is returning to the marketplace.

Just as importantly, some graphics cards are actually staying in stock at retailers when their prices are too high -- again, something that sounds perfectly normal but that we haven't seen in a while. For many months, boutiques like my local retailer Central Computers could only afford to sell you a GPU as part of a big PC bundle, but now it's making every card available on its own. GameStop is selling a Radeon RX 6600 for just $10 over MSRP, and it hasn't yet sold out. Newegg has also continually been offering an RTX 3080 Ti for just $10 over MSRP (after rebate, too) -- even if $1,200 still seems high for that card's level of performance.

An anonymous reader quotes a report from Protocol: Add Amazon to the long list of companies looking to build a more immersive future: The ecommerce giant has been looking to hire a number of people for an unannounced AR/VR product in recent months. Among the roles Amazon is looking to fill are a wide variety of senior positions for computer vision scientists, designers, program managers, product managers, researchers and technologists, suggesting that the company is looking to build out a substantive team. "You will develop an advanced XR research concept into a magical and useful new-to-world consumer product," one of the job listings reads, using the industry shorthand for extended reality, which can encompass both AR and VR. Another job listing describes the initiative related to "XR/AR devices," and states that eventual hires will be part of "a greenfield development effort" that will include "developing code for early prototypes through mass production."

Amazon is looking to hire a UX designer to work on "the core system interface along with end-user applications spanning from multi-modal interfaces to 3D AR entertainment experiences," and suggest that applicants should have the ability to "think spatially, with 3D design experience in motion design, animation [and] AR/VR, games," among other things. Applicants for a senior product manager position are told they should have "experience building deeply technical products, e.g. AI/ML, robotics, games." [...] Interestingly, a number of the job listings describe the project as related to a "magical and useful, new-to-world XR consumer product," suggesting it may be looking to establish a new product category. Others even describe it as a "a new-to-world smart-home product."

A writer for The Drive reports that "Recently, I noticed a part that I made for my Honda Accord was removed from Printables, the newly rebranded 3D printing repository offered by Prusa.

"There seemed to be no rhyme or reason for it, but I didn't think anything else about it...until reports of a mass deletion started popping up on Reddit." All models referencing the word "Honda" posted prior to March 30, 2022, were seemingly removed from Printables without warning. These included speaker brackets, key housings, hood latches, shifter bushings, washer fluid caps, roof latch handles, and my trunk lid handle — a part not offered on 10th generation Accords sold in the U.S. at all. In fact, many of the removed parts had no Honda branding but were just compatible with Honda vehicles. As it turns out, Prusa says it was issued a takedown notice from Honda and removed all 3D models that referenced the brand.

"I can confirm to you that we have received a letter from a lawyer representing Honda, informing us that we were required to remove any model which used 'Honda' in the listing, the model itself, or one of several trademarks/logos also associated with Honda," a Prusa spokesperson told The Drive in an email. "This will also be related to the naming of the files it self (sic), as for Honda this would be considered as a violation of their trademark/patents." A Prusa employee responded to a post on the company's forums, noting that Honda sent a "huge legal document" that covered every model that the company wished to have deleted. The document reportedly included items that did not have Honda logos, but also specific items with certain shapes and dimensions — like a washer fluid reservoir cap, for example.

A response from another employee was posted suggesting other sites that host 3D models were also sent a similar takedown notice.

A headline at Hot Hardware calls it "a sexy Linux laptop with deep learning chops... being pitched as the world's most powerful laptop for machine learning workloads."

And here's how Ars Technica describes the Razer x Lambda Tensorbook (announced Tuesday): Made in collaboration with Lambda, the Linux-based clamshell focuses on deep-learning development. Lambda, which has been around since 2012, is a deep-learning infrastructure provider used by the US Department of Defense and "97 percent of the top research universities in the US," according to the company's announcement. Lambda's offerings include GPU clusters, servers, workstations, and cloud instances that train neural networks for various use cases, including self-driving cars, cancer detection, and drug discovery.

Dubbed "The Deep Learning Laptop," the Tensorbook has an Nvidia RTX 3080 Max-Q (16GB) and targets machine-learning engineers, especially those who lack a laptop with a discrete GPU and thus have to share a remote machine's resources, which negatively affects development.... "When you're stuck SSHing into a remote server, you don't have any of your local data or code and even have a hard time demoing your model to colleagues," Lambda co-founder and CEO Stephen Balaban said in a statement, noting that the laptop comes with PyTorch and TensorFlow for quickly training and demoing models from a local GUI interface without SSH. Lambda isn't a laptop maker, so it recruited Razer to build the machine....

While there are more powerful laptops available, the Tensorbook stands out because of its software package and Ubuntu Linux 20.04 LTS.
The Verge writes: While Razer currently offers faster CPU, GPU and screens in today's Blade lineup, it's not necessarily a bad deal if you love the design, considering how pricey Razer's laptops can be. But we've generally found that Razer's thin machines run quite hot in our reviews, and the Blade in question was no exception even with a quarter of the memory and a less powerful RTX 3060 GPU. Lambda's FAQ page does not address heat as of today.

Lambda is clearly aiming this one at prospective MacBook Pro buyers, and I don't just say that because of the silver tones. The primary hardware comparison the company touts is a 4x speedup over Apple's M1 Max in a 16-inch MacBook Pro when running TensorFlow.
Specifically, Lambda's web site claims the new laptop "delivers model training performance up to 4x faster than Apple's M1 Max, and up to 10x faster than Google Colab instances." And it credits this to the laptop's use of NVIDIA's GeForce RTX 3080 Max-Q 16GB GPU, adding that NVIDIA GPUs "are the industry standard for parallel processing, ensuring leading performance and compatibility with all machine learning frameworks and tools."

"It looks like a fine package and machine, but pricing starts at $3,499," notes Hot Hardware, adding "There's a $500 up-charge to have it configured to dual-boot Windows 10."

The Verge speculates on what this might portend for the future. "Perhaps the recently renewed interest in Linux gaming, driven by the Steam Deck, will push Razer to consider Linux for its own core products as well."

Earlier this week the Voice of America news service shared a story that begins with exclusive photos from a nuclear lab "from which a Ukrainian official says Russian troops stole radioactive material that could be harmful if mishandled...." It is housed in a building run by a state agency managing the exclusion zone around Chernobyl's nearby decommissioned nuclear power plant, where a 1986 explosion caused the world's worst nuclear accident. The director of the agency, Evgen Kramarenko, provided the laboratory photos to VOA, saying he took them on an April 5 visit, five days after Russian troops withdrew from Chernobyl....

"We have a laboratory that had a big quantity of radioactive instruments that are used to calibrate our radiation dosimeters," Kramarenko told VOA. A dosimeter is a safety device, typically worn by individuals as a badge, that measures exposure to ionizing radiation, including nuclear radiation. The agency's dosimeters are calibrated using small metallic containers of radioactive material made by Ukrainian state enterprise USIE Izotop, which displays a photo of them on its website.

"Most of those calibration instruments were stolen. They look like coins. If the Russian soldiers carry them around, it's very dangerous for them," Kramarenko said....

In a Saturday Facebook post, Kramarenko's agency said occupying Russian troops stole samples of fuel-containing materials from the lab in addition to the radioactive calibration instruments. The agency said it was possible that the Russians threw away the items elsewhere in Chernobyl's exclusion zone, but that a likelier scenario is that they kept items as "souvenirs."

An anonymous reader quotes a report from Bloomberg: California, which aims to have a carbon-free power grid within 25 years, got a short glimpse of that possibility earlier this month. The state's main grid ran on more than 97% renewable energy at 3:39 p.m. on Sunday April 3, breaking a previous record of 96.4% that was set just a week earlier, the California Independent System Operator said Thursday in a statement. While these all-time highs are for a brief time, they solidly demonstrate the advances being made to reliably achieve California's clean energy goals," said California ISO CEO Elliot Mainzer said in the statement.

Power production from the sun and wind typically peak in the spring, due to mild temperatures and the angle of the sun allowing for an extended period of strong solar production, the grid operator said. While hitting the new renewable record is remarkable, the state has found itself scrambling for power supplies during the past two summers as it has added more intermittent sources and retired natural-gas plants for environmental reasons. California has set a target to have a zero-carbon power system by 2045.

An anonymous reader quotes a report from MIT News: Engineers at MIT and the National Renewable Energy Laboratory (NREL) have designed a heat engine with no moving parts. Their new demonstrations show that it converts heat to electricity with over 40 percent efficiency -- a performance better than that of traditional steam turbines. The heat engine is a thermophotovoltaic (TPV) cell, similar to a solar panel's photovoltaic cells, that passively captures high-energy photons from a white-hot heat source and converts them into electricity. The team's design can generate electricity from a heat source of between 1,900 to 2,400 degrees Celsius, or up to about 4,300 degrees Fahrenheit.

The researchers plan to incorporate the TPV cell into a grid-scale thermal battery. The system would absorb excess energy from renewable sources such as the sun and store that energy in heavily insulated banks of hot graphite. When the energy is needed, such as on overcast days, TPV cells would convert the heat into electricity, and dispatch the energy to a power grid. With the new TPV cell, the team has now successfully demonstrated the main parts of the system in separate, small-scale experiments. They are working to integrate the parts to demonstrate a fully operational system. From there, they hope to scale up the system to replace fossil-fuel-driven power plants and enable a fully decarbonized power grid, supplied entirely by renewable energy. The researchers published their findings in the journal Nature.

An anonymous reader quotes a report from NPR: On March 29, wind turbines produced more electricity than coal and nuclear, the U.S. Energy Information Administration, an agency that collects energy statistics for the government, says. In the past, wind-powered electricity has gone beyond coal and nuclear on separate days, but this was the first time wind surpassed both on the same day. Natural gas is still the largest source of electricity generation in the country.

The EIA notes that in the spring and fall months, nuclear and coal generators reduce their output because demand tends to be lower, which could contribute to why wind turbines produced more electricity that day. But wind taking the No. 2 spot may be short-lived. The agency says electricity generation from wind on a monthly basis has been lower than natural gas, coal and nuclear generation. According to EIA projections, wind is not expected to surpass any other method in any month of 2022 or 2023.

sciencehabit shares a report from Science.org: How do you bottle renewable energy for when the Sun doesn't shine and the wind won't blow? That's one of the most vexing questions standing in the way of a greener electrical grid. Massive battery banks are one answer. But they're expensive and best at storing energy for a few hours, not for days long stretches of cloudy weather or calm. Another strategy is to use surplus energy to heat a large mass of material to ultrahigh temperatures, then tap the energy as needed. This week, researchers report a major improvement in a key part of that scheme: a device for turning the stored heat back into electricity.

A team at the Massachusetts Institute of Technology (MIT) and the National Renewable Energy Laboratory achieved a nearly 30% jump in the efficiency of a thermophotovoltaic (TPV), a semiconductor structure that converts photons emitted from a heat source to electricity, just as a solar cell transforms sunlight into power. "This is very exciting stuff," says Andrej Lenert, a materials engineer at the University of Michigan, Ann Arbor. "This is the first time [TPVs have] gotten into really promising efficiency ranges, which is ultimately what matters for a lot of applications." Together with related advances, he and others say, the new work gives a major boost to efforts to roll out thermal batteries on a large scale, as cheap backup for renewable power systems. The idea is to feed surplus wind or solar electricity to a heating element, which boosts the temperature of a liquid metal bath or a graphite block to several thousand degrees. The heat can be turned back into electricity by making steam that drives a turbine, but there are trade-offs. High temperatures raise the conversion efficiency, but turbine materials begin to break down at about 1500C. TPVs offer an alternative: Funnel the stored heat to a metal film or filament, setting it aglow like the tungsten wire in an incandescent light bulb, then use TPVs to absorb the emitted light and turn it to electricity.

For the new device, Asegun Henry, an MIT mechanical engineer, tinkered with both the emitter and the TPV itself. Previous TPV setups heated the emitters to about 1400C, which maximized their brightness in the wavelength range for which TPVs were optimized. Henry aimed to push the temperature 1000C higher, where tungsten emits more photons at higher energies, which could improve the energy conversion. But that meant reworking the TPVs as well. With researchers at the National Renewable Energy Laboratory, Henry's team laid down more than two dozen thin layers of different semiconductors to create two separate cells stacked one on top of another. The top cell absorbs mostly visible and ultraviolet photons, whereas the lower cell absorbs mostly infrared. A thin gold sheet under the bottom cell reflects low-energy photons the TPVs couldn't harvest. The tungsten reabsorbs that energy, preventing it from being lost. The result, the group reports today in Nature, is a TPV tandem that converts 41.1% of the energy emitted from a 2400C tungsten filament to electricity.

By combining two processors into one, the company has squeezed a surprising amount of performance out of silicon. From a report: "UltraFusion gave us the tools we needed to be able to fill up that box with as much compute as we could," Tim Millet, vice president of hardware technologies at Apple, says of the Mac Studio. Benchmarking of the M1 Ultra has shown it to be competitive with the fastest high-end computer chips and graphics processor on the market. Millet says some of the chip's capabilities, such as its potential for running AI applications, will become apparent over time, as developers port over the necessary software libraries. The M1 Ultra is part of a broader industry shift toward more modular chips. Intel is developing a technology that allows different pieces of silicon, dubbed "chiplets," to be stacked on top of one another to create custom designs that do not need to be redesigned from scratch. The company's CEO, Pat Gelsinger, has identified this "advanced packaging" as one pillar of a grand turnaround plan. Intel's competitor AMD is already using a 3D stacking technology from TSMC to build some server and high-end PC chips. This month, Intel, AMD, Samsung, TSMC, and ARM announced a consortium to work on a new standard for chiplet designs. In a more radical approach, the M1 Ultra uses the chiplet concept to connect entire chips together.

Apple's new chip is all about increasing overall processing power. "Depending on how you define Moore's law, this approach allows you to create systems that engage many more transistors than what fits on one chip," says Jesus del Alamo, a professor at MIT who researches new chip components. He adds that it is significant that TSMC, at the cutting edge of chipmaking, is looking for new ways to keep performance rising. "Clearly, the chip industry sees that progress in the future is going to come not only from Moore's law but also from creating systems that could be fabricated by different technologies yet to be brought together," he says. "Others are doing similar things, and we certainly see a trend towards more of these chiplet designs," adds Linley Gwennap, author of the Microprocessor Report, an industry newsletter. The rise of modular chipmaking might help boost the performance of future devices, but it could also change the economics of chipmaking. Without Moore's law, a chip with twice the transistors may cost twice as much. "With chiplets, I can still sell you the base chip for, say, $300, the double chip for $600, and the uber-double chip for $1,200," says Todd Austin, an electrical engineer at the University of Michigan.

Mike Bouma writes: I just bought the A500 Mini here in the Netherlands. The first reviews are now available.

The Guardian gives the device a 4 out of 5 score in their review: "The A500 is a robust piece of tech nostalgia that will give veteran fans many hours of nostalgic pleasure while also providing an accessible means of introducing younger family members to the Amiga scene. The colorful sprites, pounding techno soundtracks and sardonic wit of the beloved Sensible Software, Team 17 and Bitmap Brothers games retain their appeal and it has been fascinating to rediscover how much the modern independent gaming scene owes to this 35-year-old home computer."

Nintendo Life has reviewed the device, giving it an 8 out of 10 score: "As such, this is an intriguing device for anyone who is even remotely interested in tracking the development of the games industry -- and while its 120-pound price tag makes it more expensive than many of its micro-console rivals, the ability to side-load games is very welcome indeed."

Express.co.uk gives the device a 3.5 out of 5 score in their review: "Overall, the Amiga 500 Mini is a strong addition to the crowded classic console market that will appeal mostly to those that have a lot of nostalgia for this iconic PC gaming machine. And the ability to add extra games is a great little bonus which will add plenty of extra life to the system."

Furthermore, various YouTubers have reviewed the A500 Mini, including Retro Recipes, which gives the device a perfect 5 out of 5 score while stating it beats expectations.

An anonymous reader quotes a report from TechCrunch: [R]esearchers are now finding vulnerabilities in newer hospital technologies that weren't as ubiquitous a decade ago. Enter autonomous hospital robots, the supposed-to-be-friendly self-controlled digital workhorses that can transport medications, bed linens, food, medications and laboratory specimens across a hospital campus. These robots, such as the ones built by robot maker Aethon, are equipped with the space to transport critical goods and security access to enter restricted parts of the hospital and ride elevators, all while cutting labor costs. But researchers at Cynerio, a cybersecurity startup focused on securing hospital and healthcare systems, discovered a set of five never-before-seen vulnerabilities in Aethon robots, which they say allowed malicious hackers to remotely hijack and control these autonomous robots -- and in some cases over the internet.

The five vulnerabilities, which Cynerio collectively call JekyllBot:5, aren't with the robots themselves but with the base servers that are used to communicate with and control the robots that traverse the hallways of the hospitals and hotels. The bugs range from allowing hackers to create new users with high-level access in order to then log in and remotely control the robots and access restricted areas, snoop on patients or guests using the robot's in-built cameras, or otherwise cause mayhem. Asher Brass, the lead researcher on the Aethon vulnerabilities, warned that the flaws required a "very low skill set for exploitation."

Cynerio said the base servers have a web interface that could be accessed from inside the hospital's network, allowing "guest" users to view real-time robot camera feeds and their upcoming schedules and tasks for the day without needing a password. But although the robots' functionality were protected by an "admin" account, the researchers said the vulnerabilities in the web interface could have allowed a hacker to interact with the robots without needing an admin password to log in. One of the five bugs, the researchers said, exposed robots to remote control using a joystick-style controller in the web interface, while exploiting another one of the bugs to interact with door locks, call and ride elevators, and open and close medication drawers. "The bugs were fixed in a batch of software and firmware updates released by Aethon, after Cynerio alerted the company to the issues," notes TechCrunch. "Aethon is said to have restricted internet-exposed servers to isolate the robots from potential remote attacks, and fixed other web-related vulnerabilities that affected the base station."

How much energy does it take to have a good and healthy life? A new Stanford University study has found that the answer is far less than the average American is using. From a report: Comparing energy use and quality of life across 140 countries, researchers found that the magic number is 75 gigajoules a year, or less. For context, one gigajoule of energy is equal to about 8 gallons of gasoline. Americans use 284 gigajoules a year per capita, nearly four times that much energy, according to the new research. "That suggests to me that we could nudge energy use downwards in a bunch of hyper-consuming countries and not just make a more equitable world, but perhaps make ourselves healthier and happier," said lead author and professor of earth system science Rob Jackson. The link between more energy and better quality of life is established. Globally, around 759 million people lived without electricity and 2.6 billion without clean cooking fuel in 2019, according to the World Bank.

Russia is adapting to a world where it no longer has access to many technologies abroad with the development of a new supercomputer platform that can use foreign x86 processors such as Intel's in combination with the country's homegrown Elbrus processors. The Register reports: The new supercomputer reference system, dubbed "RSK Tornado," was developed on behalf of the Russian government by HPC system integrator RSC Group, according to an English translation of a Russian-language press release published March 30. RSC said it created RSK Tornado as a "unified interoperable" platform to "accelerate the pace of important substitution" for HPC systems, data processing centers and data storage systems in Russia. In other words, the HPC system architecture is meant to help Russia quickly adjust to the fact that major chip companies such as Intel, AMD and TSMC -- plus several other technology vendors, like Dell and Lenovo -- have suspended product shipments to the country as a result of sanctions by the US and other countries in reaction to Russia's invasion of Ukraine.

RSK Tornado supports up to 104 servers in a rack, with the idea being to support foreign x86 processors (should they come available) as well as Russia's Elbrus processors, which debuted in 2015. The hope appears to be the ability for Russian developers to port HPC, AI and big data applications from x86 architectures to the Elbrus architecture, which, in theory, will make it easier for Russia to rely on its own supply chain and better cope with continued sanctions from abroad. RSK Tornado systems software is RSC proprietary and is currently used to orchestrate supercomputer resources at the Interdepartmental Supercomputer Center of the Russian Academy of Sciences, St Petersburg Polytechnic University and the Joint Institute for Nuclear Research. RSC claims to have also developed its own liquid-cooling system for supercomputers and data storage systems, the latter of which can use Elbrus CPUs too.

After years of trouble and delay, Intel's chipmaking business finally has some good news to report. The most advanced manufacturing process the company has committed to will arrive in the second half of 2024, six months earlier than planned. From a report: Intel fell behind rivals Taiwan Semiconductor Manufacturing Co. (TSMC) and Samsung because of problems modernizing its manufacturing, and it convinced chip designer Pat Gelsinger to return to the company as chief executive in 2021. Shortly afterward, Intel laid out a road map that meant five improvements to its manufacturing processes in four years, with manufacturing processes named Intel 7, Intel 4, Intel 8, Intel 20A and Intel 18A. Each step improves a chip's performance relative to its power consumption. Those steps are the foundation of a plan to catch up to rivals in 2024 and surpass them in 2025.

Slashdot reader sciencehabit shares this article from Science magazine: Robots can be programmed to lift a car and even help perform some surgeries, but when it comes to picking up an object they have not touched before, such as an egg, they often fail miserably. Now, engineers have come up with an artificial fingertip that overcomes that limitation. The advance enables machines to sense the textures of these surfaces a lot like a human fingertip does....

[W]hen researchers at the University of Bristol began designing an artificial fingertip in 2009, they used human skin as a guide. Their first fingertip — assembled by hand — was about the size of a soda can. By 2018, they had switched to 3D printing. That made it possible to make the tip and all its components about the size of an adult's big toe and more easily create a series of layers approximating the multilayered structure of human skin. More recently, the scientists have incorporated neural networks into the fingertip, which they call TacTip. The neural networks help a robot quickly process what it's sensing and react accordingly — seemingly just like a real finger.

In our fingertips, a layer of nerve endings deforms when skin contacts an object and tells the brain what's happening. These nerves send "fast" signals to help us avoid dropping something and "slow" signals to convey an object's shape. TacTip's equivalent signals come from an array of pinlike projections underneath a rubbery surface layer that move when the surface is touched. The array's pins are like a hairbrush's bristles: stiff but bendable. Beneath that array is, among other things, a camera that detects when and how the pins move. The amount of bending of the pins provides the slow signal and the speed of bending provides the fast signal. The neural network translates those signals into the fingertip's actions, making it grip more tightly for example, or adjust the angle of the fingertip....

In a second project, Lepora's team added more pins and a microphone to TacTip. The microphone mimics another set of nerve endings deep within our skin that sense vibrations felt as we run our fingers across a surface. These nerve endings enhance our ability to feel how rough a surface is. The microphone did likewise when the researchers tested the enhanced fingertip's ability to differentiate among 13 fabrics.
The article points out that in testing, the artificial fingertip's output "closely matched the neuronal signaling patterns of human fingertips undergoing the same tests."

Harvard University's school of engineering has an announcement. "For all the recent advances in integrated lithium niobate photonic circuits — from frequency combs to frequency converters and modulators — one big component has remained frustratingly difficult to integrate: lasers..." Long haul telecommunication networks, data center optical interconnects, and microwave photonic systems all rely on lasers to generate an optical carrier used in data transmission. In most cases, lasers are stand-alone devices, external to the modulators, making the whole system more expensive and less stable and scalable.

Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) in collaboration with industry partners at Freedom Photonics and HyperLight Corporation, have developed the first fully integrated high-power laser on a lithium niobate chip, paving the way for high-powered telecommunication systems, fully integrated spectrometers, optical remote sensing, and efficient frequency conversion for quantum networks, among other applications....

"Integrating high-performance plug-and-play lasers would significantly reduce the cost, complexity, and power consumption of future communication systems," said Amirhassan Shams-Ansari, a graduate student at SEAS and first author of the study. "It's a building block that can be integrated into larger optical systems for a range of applications, in sensing, lidar, and data telecommunications." By combining thin-film lithium niobate devices with high-power lasers using an industry-friendly process, this research represents a key step towards large-scale, low-cost, and high-performance transmitter arrays and optical networks.
Thanks to Slashdot reader Hari Pota for sharing the story (via Semicounductor Digest)

"The sudden ear-piercing beep of a radiation meter fills the room," reports CNN, "as a Ukrainian soldier walks in.

"This is where Russian soldiers were living at the Chernobyl nuclear power plant, and radiation levels are now higher than normal." There's no visible presence of the source of the radioactive material in the room, but Ukrainian officials say it's coming from small particles and dust that the soldiers brought into the building. "They went to the Red Forest and brought radioactive material back with them on their shoes," soldier Ihor Ugolkov explains. "Other places are fine, but radiation increased here, because they were living here."

CNN was given exclusive access to the power plant for the first time since it came back into Ukrainian control. Officials at the plant explain the levels inside the room used by Russian soldiers are only slightly above what the World Nuclear Association describes as naturally occurring radiation. One-time contact would not be dangerous but continuous exposure would pose a health hazard.

"They went everywhere, and they also took some radioactive dust on them [when they left]," Ugolkov adds. It's an example of what Ukrainian officials say was the lax and careless behavior of Russian soldiers while they were in control of the site of the 1986 nuclear disaster. The area around Chernobyl, namely the Red Forest, is still the most nuclear contaminated area on the planet, with most of the radioactive particles present on the soil....

Russian soldiers held Chernobyl for a month and are thought to have been operating in contaminated areas most of the time.
Russian soldiers entered the Red Forest and dug trenches, Ukranian officials believe — and on the edge of the area CNN spotted a Russian military ration box "that exhibited radiation levels 50 times above naturally occurring values."

The 169 Ukraine National Guard soldiers, who guarded the facility, were locked in the plant's Cold War era underground nuclear bunker, crammed up in tight quarters without access to natural light, fresh air or communication with the outside world, according to the Ukrainian Interior Minister.

"They were kept here for 30 days without sufficient lighting and food. They were not allowed outside. On the last day they were taken away from here to an unknown direction," Denys Monastyrskyy says while standing inside the bunker.

The minister says he believes the men have been taken to Russia, via Belarus, as prisoners of war, but doesn't know for certain.

Nissan is working with NASA on a new type of battery for electric vehicles that promises to charge more quickly and be lighter yet safe, the Japanese automaker said Friday. CBS News reports: The all-solid-state battery will replace the lithium-ion battery now in use for a 2028 product launch and a pilot plant launch in 2024, according to Nissan. The battery would be stable enough to be used in pacemakers, Nissan said. When finished, it will be about half the size of the current battery and fully charge in 15 minutes instead of a few hours.

The collaboration with the U.S. space program, as well as the University of California San Diego, involves the testing of various materials, Corporate Vice President Kazuhiro Doi told reporters. "Both NASA and Nissan need the same kind of battery," he said. Nissan and NASA are using what's called the "original material informatics platform," a computerized database, to test various combinations to see what works best among hundreds of thousands of materials, Doi said. The goal is to avoid the use of expensive materials like rare metals needed for lithium-ion batteries.

E Ink has unveiled a new version of its "Kaleido" color e-paper color display capable of playing animations and videos. It can also support displays up to 13.3-inches. Gizmodo reports: Kaleido was followed by Kaleido Plus which offered some key improvements, but it is now being replaced by the freshly announced Kaleido 3. We haven't had a chance to go eyes-on with Kaleido 3 just yet, but according to E Ink, "by optimizing the design of the ePaper module structure, E Ink Kaleido 3 has increased its color saturation by 30 percent compared to the previous generation." That's not a stark contrast on paper (pun intended) and Kaleido 3 still only supports 4,096 colors, but in person, the improvements between versions are usually far more obvious.

E Ink also claims that Kaleido 3, which will be available in three sizes (7.8-inch, 10.3-inch, and 13.3-inch) for everything from e-readers to larger tablets, employs a new front light technology that reduces the amount of blue light bouncing off the screen to make reading easier at night without resorting to warmer color temperature options for the LEDs which would throw off the accuracy of the colors being displayed. The most interesting upgrade with Kaleido 3 is that E Ink claims the responsiveness of the display has been improved which "enables the module to play animations and videos, providing new options for digital reading and writing in educational and professional applications."

An anonymous reader quotes a report from Ars Technica: Since its launch, the Raspberry Pi OS (and most operating systems based on it) has shipped with a default "pi" user account, making it simpler to boot up a Pi and start working without needing to hook up the device to a monitor or go through a multi-step setup process. But as of today, that's changing -- new installs of the Raspberry Pi OS are shedding that default user account for both security and regulatory reasons.

Raspberry Pi Foundation software engineer Simon Long explains the thinking in this blog post. "[The "pi" user account] could potentially make a brute-force attack slightly easier, and in response to this, some countries are now introducing legislation to forbid any Internet-connected device from having default login credentials," he writes. This move will improve the Pi operating system's security.

Before, even if you assigned a good password to the "pi" account, attackers could still assume with a reasonable degree of certainty that most Raspberry Pi boards were using the "pi" username. Many Pi OS-based operating systems also ship with the default "pi" user account enabled and are completely passwordless, requiring extra steps to assign the account a password in the first place. The flip side is that the change could break some software and scripts, particularly those that are hard-coded to use the "pi" user account and home folder. "[T]he Raspberry Pi OS now boots into a dedicated setup mode the first time you start it up instead of running the setup wizard as an app in the normal desktop environment," adds Ars. "And that setup wizard now prompts you to create a username and password rather than simply assigning a password to the default 'pi' user account. To aid with setup, the wizard can now pair Bluetooth keyboards and mice without requiring you to plug in a USB accessory first."

The new version of the Pi OS also includes experimental support for the Wayland display server protocol, but Long says most people should ignore it for now since it's explicitly labeled as "experimental."

An anonymous reader quotes a report from ABC News: Britain plans to build eight new nuclear reactors and expand production of wind energy as it seeks to reduce dependence on oil and natural gas from Russia and other foreign suppliers following the invasion of Ukraine. Prime Minister Boris Johnson announced the plans Thursday as part of a new energy security strategy that will also accelerate development of solar power and hydrogen projects. The government said it wants to almost triple nuclear power generation capacity to 24 gigawatts by 2050.

"We're setting out bold plans to scale up and accelerate affordable, clean and secure energy made in Britain, for Britain, from new nuclear to offshore wind, in the decade ahead,'' Johnson said. "This will reduce our dependence on power sources exposed to volatile international prices we cannot control." The strategy comes after oil and natural gas prices soared following the invasion of Ukraine amid concerns that energy supplies from Russia could be curtailed. High energy prices are fueling a cost-of-living crisis in Britain, where household gas and electricity prices jumped 54% this month.

An anonymous reader quotes a report from ZDNet, written by Steven Vaughan-Nichols: Mainframes and AI? Isn't that something like a Model-T Ford with a Tesla motor? Actually, no. Mainframes are as relevant in 2022 as they were in the 1960s. IBM's new IBM z16, with its integrated on-chip Telum AI accelerator, is ready to analyze real-time transactions, at scale. This makes it perfect for mainframe mission-critical workloads such as healthcare and financial transactions. This 21st century Big Iron AI accelerator is built onto its core Telum processor. With this new dual-processor 5.2 GHz chip and its 16 cores, it can perform 300 billion deep-learning inferences per day with one-millisecond latency. Can you say fast? IBM can.

Anthony Saporito, a senior technical staff member for IBM Z hardware development, said "One of the Telum design's key innovations is we built an AI accelerator right onto the silicon of the chip and we directly connected all of the cores and built an ecosystem up the stack. Through the hardware design, firmware, the operating systems, and the software, deep learning is built into all of the transactions." According to Patrick Moorhead, Moor Insights & Strategy's chief analyst, "The AI accelerator is a game-changer. The z16 with z/OS has a 20x response time with 19x higher throughput when inferencing compared to a comparable x86 cloud server with 60ms average network latency."

The new model z16 also includes a so-called quantum-safe system to protect organizations from near-future threats that might crack today's encrypted files. This is done with the z16's support of the Crypto Express8S adapter. Built around a CCA cryptographic coprocessor and a PKCS #11 cryptographic coprocessor, it enables users to develop quantum-safe cryptography. It also works with classical cryptography. If you want your data and transactions to be safe both today and tomorrow, this deserves your attention.

Research Sid Assawaworrarit and his colleagues have outfitted an ordinary solar panel with a thermoelectric generator, capable of generating a small amount of electricity from the slight difference in temperature between the ambient air and the surface of a solar panel pointed deep into space. Interesting Engineering reports: "During the day, there's a light coming in from the Sun and hitting the solar cell, but during the night, something of a reverse happens," Assawaworrarit says. That's because solar panels -- like everything warmer than absolute zero -- emit infrared radiation. "There's actually light going out [from the solar panel], and we use that to generate electricity at night. The photons going out into the night sky actually cool down the solar cell," he says.

As those photons leave the skyward surface of the solar panel, they cary heat with them. That means that on a clear night -- when there are no clouds to reflect infrared light back toward the Earth -- the surface of a solar panel will be a few degrees cooler than the air around it. That temperature differential is what Assawaworrarit and his colleagues are taking advantage of. A device called a thermoelectric generator can capture some of the heat flowing from the warmer air to the cooler solar panel and convert it into electricity.

On a clear night, the device Assawaworrarit tested on the Stanford rooftop generates roughly fifty milliwatts for every square meter of solar panel (50 mW/m2). "I think that's probably a record number," he says. But Assawaworrarit and his team aren't stopping there. He says that with a couple of improvements (and in a good location) such a device could generate twice that amount of electricity. "The theoretical limit is probably about one or two watts per square meter," he says. "That's not a huge number, but there are a lot of applications" where that kind of energy at night would come in handy.

An anonymous reader quotes a report from TechCrunch: The U.S. government owns about 1,100 charging stations. It may need more than 100,000 charging stations to support widespread EV use in the next decade, according to testimony from the Government Accountability Office (GAO) on Tuesday. The testimony, which was first reported by Reuters, mainly delved into the U.S. Postal Service's efforts to transition its fleet to EVs and federal fleet transition issues. GAO found that federal agencies like USPS held certain incorrect assumptions about the cost and benefits of using gas versus electric vehicles, namely that USPS used gas prices that are about $2 per gallon less than the current national average in its estimates, and assumed maintenance and acquisition costs that are higher than the reality.

GAO has identified charging infrastructure costs and installation as a key challenge to acquiring EVs for federal fleets. [...] The General Services Administration (GSA) said that as of March 10, federal agencies have only ordered an additional 1,854 zero-emission vehicles since its prior report. The U.S. government usually purchases about 50,000 vehicles annually. The federal fleet currently has about 657,000 cars, SUVs and trucks, out of which less than 1% are currently electric, according to GSA data.

Ai-Da is the world's first ultra-realistic humanoid robot that can paint as artists have painted for centuries. The Guardian reports: Devised in Oxford by [Aidan Meller], Ai-Da was created more than two years ago by a team of programmers, roboticists, art experts and psychologists, completed in 2019, and is updated as AI technology improves. She has already demonstrated her ability to sketch and create poems. Her new painting talent was unveiled ahead of the world premier of her solo exhibition at the 2022 Venice Biennale, which opens to the public on 22 April.

Titled Leaping into the Metaverse, Ai-Da Robot's Venice exhibition will explore the interface between human experience and AI technology, from Alan Turing to the metaverse, and will draw on Dante's concepts of purgatory and hell to explore the future of humanity in a world where AI technology continues to encroach on everyday human life. Soon, with the amount of data we freely give about ourselves, and through talking to our phones, computers, cars and even kitchen appliances, AI algorithms "are going to know you better than you do," Meller warned.

We are entering a world, he said, "not understanding which is human and which is machine." "How comfortable are you with that?" "What better thing to have a technological robot artist saying: 'Hang on, are you happy with me doing this?' She is almost daring you to say are you comfortable with this. We are not here to promote robots or technology. We are deeply concerned about the nature of what this technology can do," Meller added. "The whole point of Ai-Da is to highlight what is it we are doing, unknowingly, online all the time."

Mercedes-Benz will put more than five thousand workers on collective vacation in two plants in Brazil due to the shortage of semiconductor chips, the company said on Monday. Reuters reports: The production stoppage will happen from April 18 to May 3 and includes 5,000 employees in the Sao Bernardo do Campo plant and 600 in the Juiz de Fora factory, located in the Brazilian states of Sao Paulo and Minas Gerais, respectively. Mercedes said it is adjusting its production of trucks, truck cabins, bus chassis and other auto parts due to the global semiconductor supply crisis. The company had already put about 1,200 workers on collective vacation with pay in March because of supply chain shortages, according to the metalworkers union from the Sao Bernardo do Campo region.

This week the New York Times published an opinion piece by three-time Pulitzer Prize winner Thomas L. Friedman arguing that greener energy is the best response to Russia's invasion of Ukraine.

Friedman starts by decrying America's "umpteenth confrontation with a petro-dictator whose viciousness and recklessness are possible only because of the oil wealth he extracts from the ground. "No matter how the war ends in Ukraine, it needs to end with America finally, formally, categorically and irreversibly ending its addiction to oil." Nothing has distorted our foreign policy, our commitments to human rights, our national security and, most of all, our environment than our oil addiction. Let this be the last war in which we and our allies fund both sides.... As long as we're addicted to oil, we are always going to be begging someone, usually a bad guy, to move the price up or down, because we alone are not masters of our own fate. This has got to stop...
Friedman notes that global oil prices collapsing between 1988 and 1992 "helped bankrupt the Soviet Union and hasten its collapse.... We can create the same effects today by overproducing renewables and overemphasizing energy efficiency."

Among his suggestions are requiring power companies to transition faster to renewable energy sources — as well as "eliminating the regulatory red tape around installing rooftop solar systems."

And he's also got a solution for the spike in fuel prices: If you want to lower gasoline prices today, the most surefire, climate-safe method would be to reduce the speed limit on highways to 60 miles per hour and ask every company in America that can do so to let its employees work at home and not commute every day. Those two things would immediately cut demand for gasoline and bring down the price.

Is that too much to ask to win the war against petro-dictators like Putin — a victory in which the byproduct is cleaner air, not burning tanks?

Early last month on the London Metals Exchange, a Chinese metals producer named Tsingshan Holding Group "wagered a massive bet that the price of nickel would fall," reports CNN Business. At the peak Tsingshan's position "was equivalent to about an eighth of all of the outstanding contracts in the market."

But between Friday, March 4 and Tuesday March 8, the metal soared in value from about $29,000 to $100,000 per ton. "If prices had stood at $100,000 the company would have owed the London Metals Exchange $15 billion, according to the Wall Street Journal." The spike generated margin calls higher than the London Metals Exchange [the LME] had ever seen — and if paid, they would force multiple defaults that would ripple through the exchange and destabilize the global market. Exchange executives scrambled to respond, ultimately throwing a lifeline to the brokers representing Tsingshan and other producers. In an unprecedented move, they halted trading and retroactively canceled all 9,000 trades that occurred on Tuesday, worth about $4 billion in total. The market would remain dark for a week, unleashing a tidal wave of chaos and a mob of angry investors onto the exchange. In its wake, threats of lawsuits abound and trust has eroded. [The day it re-opened, CNN also reported the exchange "had to suspend the electronic trading of nickel shortly after it resumed due to a technical problem."]

Now, the 145 year-old British giant is teetering on a nickel. Over the past century-and-a-half the LME, known for its ring of red couches and barking brokers, has successfully trudged its way through world wars, meltdowns and defaults. But nickel, the metal used in stainless steel and the lithium-ion battery cells in most electric vehicles, might be what finally brings the world's largest market for base metals contracts to its knees."The world's pricing mechanism for nickel is failing," said Daniel Ghali, the director of commodities strategy at TD Securities. "The question is, will it continue to fail?" Others weren't as diplomatic. "The LME is now very likely going to die a slow self-inflicted death through the loss of confidence in it and its products," tweeted Mark Thompson, executive vice-chairman at Tungsten West, a mining development company....

Until 2012, the LME was owned by its members, the same people who traded on the exchange — but then it was sold to Hong Kong Exchanges and Clearing (HKEX) for $2.2 billion....

The LME's lack of transparency allows two or three big names to throw around vast sums of money and "hijack" a relatively illiquid market, said Adrian Gardner, principal analyst of nickel markets at Wood Mackenzie.... Sitting on the other side of the short were hedge funds, who had bet that nickel supply would decrease because of Russia's invasion of Ukraine (Russia provides about 20% of all top-grade nickel). When the LME decided to retroactively cancel those $4 billion in gains on March 8, it was hedge funds who lost giant sums of money. Global investment management firm AQR, which has $124 billion in assets under management, was among those that lost money when trades were canceled. "The winners were commodity producers and their banks, and the losers are the various clients that AQR and other large asset managers represent: firefighters, municipal workers, and university endowments," said Jordan Brooks, principal at AQR Capital Management. AQR is considering legal action against the exchange. Investors, said Brooks, "acted in good faith and provided liquidity, but the LME just decided to shift their trading gains to commodities producers and their banks...."

Volume in trading has yet to recover, raising questions about the LME's ability to accurately benchmark the price of the metal. Fewer than 210 contracts were traded in the first hour after the market opened on Tuesday. That's down about 60% from the 90-day average before the trading halt. Other metals on the LME, like copper and aluminum, have also seen a decrease in trade volume....

The Chicago Mercantile Exchange doesn't currently trade nickel, but perhaps it soon will. "[The LME] did something that was egregious and a betrayal of trust," said Brooks. "I'd be shocked if the strategic plans of other exchanges haven't changed in the past three weeks."

U.S. president Joe Biden "will invoke the Defense Production Act to encourage domestic production of minerals required to make batteries for electric vehicles and long-term energy storage," reports CNBC.

"It will also help the U.S. minimize dependence on foreign supply chains." The president's order could help companies receive government funding for feasibility studies on projects that extract materials, including lithium, nickel, cobalt, graphite and manganese, for EV production.

The Defense Production Act, established by President Harry Truman during the Cold War, allows the president to use emergency authority to prioritize the development of specific materials for national production.... The administration also said it's reviewing further uses of the law to "secure safer, cleaner, and more resilient energy for America."

The transportation sector is one of the largest contributors to U.S. greenhouse gas emissions, representing about one-third of emissions every year. The transition away from gas vehicles to EVs is considered critical to combating human-caused climate change....

The administration in February unveiled a plan to allocate $5 billion to states to fund EV chargers over five years as part of the bipartisan infrastructure package.
The White House said in a statement the move would reduce America's reliance on China and other countries "for the minerals and materials that will power our clean energy future."

Stretch, a logistics robot from Boston Dynamics that's capable of moving boxes and unloading cargo, is now on sale for anyone who wants to purchase one. Though, as TechCrunch notes, "deliveries are not expected until 2023 and 2024." From the report: The company predictably cites ongoing labor issues as a key driver in interest around the new robot. "Labor shortages and supply chain snags continue to create challenges in keeping the flow of goods moving," says CEO Robert Playter. "Stretch makes logistics operations more efficient and predictable, and it improves safety by taking on one of the most physically demanding jobs in the warehouse. Many of our early adopter customers have already committed to deploying the robot at scale, so we are excited Stretch will soon be put to work more broadly, helping retailers and logistics companies handle the continued surging demand for goods."

Walgreens Boots Alliance is opening robot-powered micro-fulfillment centers across the U.S. to fill customers' prescriptions as the role of stores and pharmacists change. CNBC reports: Inside of a large facility in the Dallas area, they fill thousands of prescriptions for customers who take medications to manage or treat high blood pressure, diabetes or other conditions. Each robot can fill 300 prescriptions in an hour, the company said -- roughly the same number that a typical Walgreens pharmacy with a handful of staff may do in a day.

Walgreens Boots Alliance is opening the automated, centralized hubs to keep up in the fast-changing pharmacy industry. The pandemic has intensified the drugstore chain's need to stay relevant as online pharmacies siphon off sales and more customers have items from toilet paper to toothpaste delivered to their doorstep. The global health crisis has also heightened demand for pharmacists, as hospitals and drugstores hired them to administer Covid vaccines and tests. That has forced Walgreens and its competitors, CVS Health and Rite Aid, to rethink the role of their stores and pharmacists.

By 2025, as much as half of Walgreens' prescription volume from stores could be filled at the automated centers, said Rex Swords, who oversees facilities as Walgreens' group president of centralized services, operations and planning. That will free up more of pharmacists' time to provide health care, Brewer said in an interview with CNBC's Bertha Coombs. "We're doing all of this work, so that the pharmacist has an easier job, so that they can get back to being front and center, building a relationship with that patient and interacting the way they were trained -- the work that they love to do," she said. Pharmacists will continue to fill time-sensitive medications and controlled substances at local stores as the company expands its use of robots.

MojoKid writes: Today Intel finally launched its first major foray into discrete GPUs for gamers and creators. Dubbed Intel Arc A-Series and comprised of 5 different chips built on two different Arc Alchemist SoCs, the company announced its entry level Arc 3 Graphics is shipping in market now with laptop OEMs delivering new all-Intel products shortly. The two SoCs set the foundation across three performance tiers, including Arc 3, Arc 5, and Arc 7.

For example, Arc A370M arrives today with 8 Xe cores, 8 ray tracing units, 4GB of GDDR6 memory linked to a 64-bit memory bus, and a 1,550MHz graphics clock. Graphics power is rated at 35-50W. However, Arc A770M, Intel's highest-end mobile GPU will come with 32 Xe cores, 32 ray tracing units, 16GB of GDDR 6 memory over a 256-bit interface and with a 1650MHz graphics clock. Doing the math, Arc A770M could be up to 4X more powerful than Arc 370M. In terms of performance, Intel showcased benchmarks from a laptop outfitted with a Core i7-12700H processor and Arc A370M GPU that can top the 60 FPS threshold at 1080p in many games where integrated graphics could come up far short. Examples included Doom Eternal (63 fps) at high quality settings, and Hitman 3 (62 fps), and Destiny 2 (66 fps) at medium settings. Intel is also showcasing new innovations for content creators as well, with its Deep Link, Hyper Encode and AV1 video compression support offering big gains in video upscaling, encoding and streaming. Finally, Intel Arc Control software will offer unique features like Smooth Sync that blends tearing artifacts when V-Synch is turned off, as well as Creator Studio with background blur, frame tracking and broadcast features for direct game streaming services support.

schwit1 shares a report from EurekAlert: A nitrogen doped carbon-coated nickel anode can catalyze an essential reaction in hydrogen fuel cells at a fraction of the cost of the precious metals currently used, Cornell University researchers have found. The new discovery could accelerate the widespread use of hydrogen fuel cells, which hold great promise as efficient, clean energy sources for vehicles and other applications. It's one of a string of discoveries for the Hector D. Abruna lab in their ongoing search for active, inexpensive, durable catalysts for use in alkaline fuel cells.

Recent experiments with nonprecious-metal HOR electrocatalysts needed to overcome two major challenges, the researchers wrote: low intrinsic activity from too strong a hydrogen binding energy, and poor durability due to rapid passivation from metal oxide formation. To overcome these challenges, the researchers designed a nickel-based electrocatalyst with a 2 nanometer shell made of nitrogen-doped carbon. Their hydrogen fuel cell has an anode (where hydrogen is oxidized) catalyst consisting of a solid nickel core surrounded by the carbon shell. When paired with a cobalt-manganese cathode (where oxygen is reduced), the resulting completely precious-metal-free hydrogen fuel cell outputs more than 200 milliwatts per square centimeter.

The presence of nickel oxide species on the surface of the nickel electrode slows the hydrogen oxidation reaction dramatically, Abruna said. The nitrogen-doped carbon coating serves as a protection layer and enhances the HOR kinetics, making the reaction quicker and much more efficient. In addition, the presence of the graphene coating on the nickel electrode prevents the formation of nickel oxides -- resulting in electrodes with dramatically enhanced lifetimes. These electrodes are also much more tolerant to carbon monoxide, which rapidly poisons platinum. The study has been published in the journal Proceedings of the National Academy of Sciences.

Greenpeace and other environmental groups launched a new campaign today to push the Bitcoin network to slash its growing greenhouse gas emissions. The Verge reports: The goal of the campaign, dubbed "Change the code, not the climate," is to switch up the energy-hungry process of verifying transactions and mining new Bitcoins. [...] In order to validate transactions, Bitcoin miners rely on specialized hardware to solve complex puzzles. Their computers gobble up a lot of energy in the process, and the miners get new tokens in return. It's a process called "proof of work," in which the energy used is sort of the price paid to verify transactions. The process is deliberately energy-intensive as a safety measure. The baked-in inefficiency is meant to discourage bad actors from manipulating the data because it would cost a lot of energy to do so.

The new campaign aims to move Bitcoin away from that energy-hungry proof of work process. The most popular alternative is called proof of stake. Cryptocurrencies that use proof of stake use vastly less energy because there are no puzzles to solve. Instead of essentially paying with electricity to participate in the process, you have to offer up some of your own tokens. This is supposed to prove that you have a "stake" in keeping the ledger accurate. If you mess anything up, you lose tokens as a penalty. While proof of stake might make solve a lot of Bitcoin's pollution problems, experts have been skeptical that miners would be willing to make the change. Miners invest a lot in their hardware and would be hard-pressed to abandon it. And some fans of proof of work maintain that it's the most secure way to maintain the ledger. "We know Bitcoin stakeholders are incentivized not to change," the campaign acknowledges on its website. "Changing Bitcoin would render a whole lot of expensive infrastructure worthless, meaning Bitcoin stakeholders will need to walk away from sunk costs -- or find other creative solutions."

As the Guardian notes, the campaign is launching a huge digital advertising push via the Wall Street Journal, New York Times, Marketwatch, Politico, Facebook and others. "Organizers are also taking legal action against proposed mining sites and using their large memberships to push bitcoin's biggest investors and influencers to call for a code change." Additionally, the campaign is urging people to tweet at cryptocurrency influencers to support the campaign.

theodp shares a report from Chicago Sun-Times, written by Frank Main: When the school system [Chicago Public Schools] shifted to having students learn remotely in the spring of 2020 near the beginning of the pandemic, it lent students iPads, MacBooks and Windows computer devices so they could do school work and attend virtual classes from home. CPS then spent about $165 million to buy Chromebook desktop computers so that every student from kindergarten through senior year in high school who needed a computer could have one. Students borrowed 161,100 Chromebooks in September 2020. By June 2021, more than 210,000 of those devices had been given out. Of them, nearly 40,000 Chromebooks have been reported lost -- nearly a fifth of those that were lent.

"Schools have made repeated efforts to recover the lost devices from families without success," according to a written statement from CPS officials in response to questions about the missing school property. Also missing are more than 9,600 iPads, 114 televisions, 1,680 printers and 1,127 audiovisual projectors, among many other items. Officials say CPS has bought new computer devices to replace the missing ones. Longtime Slashdot reader theodp notes that "there were 340,658 students enrolled in the Chicago Public Schools (CPS) at the start of the 2020-2021 school year."