Sunday, August 15th, 2021

Time	Event
1:34a	Will Google's Tensor Chip Spell Trouble for 5G? Google's Pixel 6 phone will be powered by a Tensor processor which PCMag UK believes is "clearly designed to accelerate machine learning and AI." But does it have bigger implications? Tensor is a signpost, not a destination. Google has never sold huge numbers of Pixel phones and isn't signaling a change in strategy there. Rather, it's saying that it would like Android as a whole to shift toward more on-device processing for AI and ML. That could give a big boost to Google's two core businesses, advertising and data. It could also create problems for the future of 5G... The more your phone can handle its own ML and AI, the less it needs the cloud. For example, a Tensor-enabled phone could potentially analyze your photos and share data locally with on-device advertising APIs, letting Google proclaim that its cloud services never access your raw data. That would help bridge the gap between the privacy you want and the targeted ads Google needs to survive. But a lot of consumer 5G app ideas assume your phone will offload processing or rendering onto the network. Phones that are mostly self-sufficient aren't going to need high-bandwidth, low-latency networks or "mobile edge computing." Sure, the rise of more Tensor-like ML-focused chips would take pressure off the carriers' still-shaky 5G builds, but it'll also keep raising the question of why consumers need 5G in the first place. That could reduce carriers' willingness to keep investing in their consumer 5G networks. Although the first sence of the article's last paragraph adds, "Maybe I'm overstating the issue here..." Read more of this story at Slashdot. (Comment on this)
3:34a	Will MIT Scientists' Powerful Magnet Lead Us to Nuclear Fusion Energy? "A start-up founded by scientists at the Massachusetts Institute of Technology says it is nearing a technological milestone that could take the world a step closer to fusion energy, which has eluded scientists for decades," reports the New York Times: Researchers at M.I.T.'s Plasma Science and Fusion Center and engineers at the company, Commonwealth Fusion Systems, have begun testing an extremely powerful magnet that is needed to generate immense heat that can then be converted to electricity. It would open the gates toward what they believe could eventually be a fusion reactor... Though a fusion energy breakthrough remains elusive, it is still held out as one of the possible high-technology paths to ending reliance on fossil fuels. And some researchers believe that fusion research could finally take a leap forward this decade. More than two dozen private ventures in the United States, Europe, China and Australia and government-funded consortia are now investing heavily in efforts to build commercial fusion reactors. Total investment by people such as Bill Gates and Jeff Bezos is edging toward $2 billion. The federal government is also spending about $600 million each year on fusion research, and there is a proposed amendment to add $1 billion to the Biden administration's infrastructure bill, said Andrew Holland, chief executive of the Fusion Industry Association... Commonwealth's new magnet, which will be one of the world's most powerful, will be a crucial component in a compact nuclear fusion reactor known as a Tokamak, a design that uses magnetic forces to compress plasma until it is hotter than the sun... Commonwealth Fusion executives claim that the magnet is a significant technology breakthrough that will make Tokamak designs commercially viable for the first time. They say they are not yet ready to test their reactor prototype, but the researchers are finishing the magnet and hope it will be workable by 2025... Commonwealth, which has raised more than $250 million so far and employs 150 people, received a significant boost last year when physicists at M.I.T.'s Plasma Science and Fusion Center and the company published seven peer-reviewed papers in the Journal of Plasma Physics explaining that the reactor will work as planned. What remains to be proved is that the Commonwealth prototype reactor can produce more energy than it consumes, an ability that physicists define as Q greater than 1. The company is hoping that its prototype, when complete, will produce 10 times the energy it consumes. Commonwealth's chief executive (also a plasma physicist) explains to the Times how fusion energy is different than other sources: because it really doesn't require any resources. "You add up all the costs, the cost of normal stuff like concrete and steel, and it will make as much power as a gas plant, but without having to pay for the gas." Read more of this story at Slashdot. (Comment on this)
3:34p	The Worst 5% of Power Plants Produce 73% of Their Emissions Ars Technica reports on a paper investigating how much each power plant contributes to global emissions, using data from 2018. "The study finds that many countries have many power plants that emit carbon dioxide at rates well above either the national or global average. "Shutting down the worst 5 percent of this list would immediately wipe out about 75 percent of the carbon emissions produced by electricity generation." It should surprise nobody that all the worst offenders are coal plants. But the distribution of the highest polluting plants might include a bit of the unexpected. For example, despite its reputation as the home of coal, China only has a single plant in the top-10 worst (bottom-10?). In contrast, South Korea has three on the list, and India has two. In general, China doesn't have many plants that stand out as exceptionally bad, in part because so many of its plants were built around the same time, during a giant boom in industrialization. As such, there's not much variance from plant to plant when it comes to efficiency. In contrast, countries like Germany, Indonesia, Russia, and the US all see a lot of variance, so they're likely to have some highly inefficient plants that are outliers. Put a different way, the authors looked at how much of a country's pollution was produced by the worst 5 percent when all of the country's power plants were ranked by carbon emissions. In China, the worst 5 percent accounted for roughly a quarter of the country's total emissions. In the US, the worst 5 percent of plants produced about 75 percent of the power sector's carbon emissions. South Korea had similar numbers, while Australia, Germany, and Japan all saw their worst 5 percent of plants account for roughly 90 percent of the carbon emissions from their power sector. When it comes to carbon emissions, the worst 5 percent of power plants account for 73 percent of the total power sector emissions globally. That 5 percent also produces over 14 times as much carbon pollution as it would if the plants were merely average... Simply boosting each plant's efficiency to the average for the country would drop power sector emissions by a quarter and up to 35 percent in countries like Australia and Germany. Switching them to natural gas, which produces less carbon dioxide per amount of energy released, would drop global emissions by 30 percent, with many countries (including the US) seeing drops of over 40 percent. Again, because China doesn't see a lot of variance among its plants, these switches would have less of an impact, being in the area of 10 percent drops in emissions. But the big winner is carbon capture and storage. Outfitting the worst of the plants with a capture system that was 85 percent efficient would cut global power sector emissions in half and total global emissions by 20 percent. Countries like Australia and Germany would see their power sector emissions drop by over 75 percent. Overall, these are massive gains, considering that it's not unreasonable to think that the modifications could be done in less than a decade. And they show the clear value of targeting the easiest wins when it comes to lowering emissions. Read more of this story at Slashdot. (Comment on this)
10:34p	Sportscar Manufacturer Debuts World's First All-Electric High-Performance Hypercar There's something new in the world of expensive high-performance sportscars (or "hypercars".) Italian carmaker Automobili Pininfarina "has debuted the Battista, the first pure-electric hyper GT, on the streets of California as part of Monterey Car Week," reports Newsweek. (Alternate URL here.) The debut will give U.S. clients the chance to experience the 1,900 horsepower hypercar... [In a video] the Battista, crafted at Automobili Pininfarina's manufacturing facility in Italy, glides smoothly and quickly through California roads at speeds of over 100 miles per hour. The drive shows off the agility of the polished Impulso forged aluminum alloy wheels and exposed bodywork. Pulling off the road, the scissor doors swing open, highlighting the Black Exposed Signature Carbon bodywork. Supplying the 1,900 hp is a 120-kilowatt-hour battery that powers four electric motors, one in each wheel, that gets about 1696 pound-feet of torque. On a single charge, the car is expected to get a range of over 310 miles. With an emphasis on the company's "Pure Sound" philosophy and drawing from music theory, the bespoke design of the car is built to have a core frequency of 54 hertz (hz). Wanting to provide an emotional experience for the driver, the organic frequency will rise in multiples of 54 hz as the speed increases. The company's product platform director of sports cars explains on their web site that "Every driver has an emotional bond with a car and the sound of Battista will nurture this connection, not by replicating a familiar car sound, but with one that radiates the beauty of Battista's design both inside and out. This way, the Battista will not only impress with its aesthetic appeal and performance, but also on a new emotional level enhanced through the sound." The company's web site also calls it "the most powerful road-legal Italian sports car ever produced." Read more of this story at Slashdot. (Comment on this)

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