Data Storage

China is About To Launch SSDs So Small You Insert Them Like a SIM Card (theverge.com) 44

A Chinese storage manufacturer has developed a solid-state drive smaller than a U.S. penny that delivers sequential read speeds of 3,700 megabytes per second, according to The Verge.

The "Mini SSD" by Biwin measures 15mm x 17mm x 1.4mm thick and connects via PCIe 4x2, offering 512GB to 2TB capacities. The drive inserts into devices using a SIM card-style tray mechanism and claims IP68 water resistance plus three-meter drop protection. Two gaming portables announced at ChinaJoy will include slots for the drives: GPD's Win 5 handheld and OneNetbook's OneXPlayer Super X hybrid laptop/tablet, both powered by AMD's Strix Halo processors. The Mini SSD outpaces MicroSD Express cards used in Nintendo Switch 2 by nearly four times, though full-size M.2 drives remain faster at up to 14,000MB/s.
China

China Launches Three-Day Robot Olympics Featuring Football and Table Tennis (reuters.com) 7

China launched the World Humanoid Robot Games on Friday. The three-day event will see 280 teams from 16 countries compete in football, track and field, and table tennis alongside robot-specific challenges including medicine sorting and cleaning services. The event also features 192 university teams and 88 private enterprise teams from the U.S., Germany, Brazil and other nations as well as Chinese companies Unitree and Fourier among participants.

Beijing municipal government serves as an organizing body. The Chinese robotics sector has received over $20 billion in government subsidies in the past year with Beijing planning a one trillion yuan ($137 billion) fund for AI and robotics startups. A previous Beijing humanoid robot marathon saw several competitors emit smoke and fail to complete the course.
Businesses

Applied Materials Sued In China Over Alleged Trade Secret Theft (msn.com) 21

hackingbear shares a report from Bloomberg: Top U.S. chip-equipment supplier Applied Materials was sued by a rival in China over alleged trade secret theft, a further escalation in the technology war between the world's two largest economies. Beijing E-Town Semiconductor Technology Co. filed a lawsuit with the Beijing Intellectual Property Court against Applied Materials, according to a company statement (PDF) to the Shanghai Stock Exchange. The Chinese chip-gear maker alleged that the Santa Clara, California-based company illegally obtained, used and revealed its core technologies related to the application of plasma source in treating the surface of wafers, the statement said. The court has filed the case but has not begun a trial, E-Town added.

Applied Materials earlier hired two employees from E-Town's fully owned US subsidiary, Mattson, and they were privy to the Beijing company's proprietary plasma technologies, the filing said. Applied Materials filed a patent application crediting the duo as inventors with the National Intellectual Property Administration in China after the two joined the Santa Clara company, the Beijing firm said, alleging that the content revealed trade secrets co-owned by E-Town and Mattson. "The patent application violated the rules of China's Anti-Unfair Competition Law, and it infringes on trade secrets, and has caused significant damage to the plaintiff's intellectual property and economic interests,â E-Town said in the filing, adding that Applied Materials is also suspected of marketing and selling the technologies involved in the case to Chinese customers. E-Town is asking the court to demand that Applied Materials stop using its trade secrets and destroy related materials. It's also seeking about 100 million yuan ($13.9 million) in recompense for damage.

China

China-Plus-One Was Just China All Along (indiadispatch.com) 35

An anonymous reader shares a report: India's blueprint for displacing China as the world's electronics workshop contains a rather extraordinary feature: the entire Indian edifice requires Chinese companies to supply the technical architecture, manufacturing know-how and operational templates that would make such displacement theoretically possible.

Let's start with Dixon Technologies, India's flagship domestic electronics manufacturer. The company has systematically built indigenous capability through a growing constellation of Chinese partnerships: Longcheer provides the design intelligence, Kunshan Q-Tech delivers camera module expertise, Chongqing Yuhai supplies precision-molded components and HKC brings display technology. This pattern of structured dependence has become the organizing principle of India's electronics manufacturing push.

[...] The current architecture sees Chinese companies retain control of the critical knowledge while their Indian partners provide labour arbitrage and regulatory navigation. Under this arrangement, India isn't constructing an alternative to Chinese manufacturing so much as establishing Chinese manufacturing's most elaborate subsidiary operation, underwritten by Indian taxpayers and marketed as national renewal.
Many countries, but most importantly India and Vietnam, have worked hard in recent years to attract businesses that decided to diversify away from China, a strategy analysts have dubbed as "China Plus One."
Open Source

China's Lead in Open-Source AI Jolts Washington and Silicon Valley (msn.com) 89

China has established a lead in the field of open-source AI, a development that is reportedly sending jolts through both Washington and Silicon Valley. The nation's progress has become a significant event for American policymakers in the U.S. capital. The advancement has registered as a shock within Silicon Valley, the hub of the American technology industry. From the report: The overall performance of China's best open-weight model has surpassed the American open-source champion since November, according to research firm Artificial Analysis. The firm, which rates the ability of models in math, coding and other areas, found a version of Alibaba's Qwen3 beat OpenAI's gpt-oss.

However, the Chinese model is almost twice as big as OpenAI's, suggesting that for simpler tasks, Qwen might consume more computing power to do the same job. OpenAI said its open-source model outperformed rivals of similar size on reasoning tasks and delivered strong performance at low cost.

United States

US Embeds Trackers in AI Chip Shipments To Catch Diversions To China (reuters.com) 47

An anonymous reader shares a report: U.S. authorities have secretly placed location tracking devices in targeted shipments of advanced chips they see as being at high risk of illegal diversion to China, according to two people with direct knowledge of the previously unreported law enforcement tactic. The measures aim to detect AI chips being diverted to destinations which are under U.S. export restrictions, and apply only to select shipments under investigation, the people said.

They show the lengths to which the U.S. has gone to enforce its chip export restrictions on China, even as the Trump administration has sought to relax some curbs on Chinese access to advanced American semiconductors. The trackers can help build cases against people and companies who profit from violating U.S. export controls, said the people who declined to be named because of the sensitivity of the issue.

China

China Urges Firms To Avoid Nvidia H20 Chips After Trump Resumes Sales (yahoo.com) 44

An anonymous reader quotes a report from Bloomberg: Beijing has urged local companies to avoid using Nvidia's H20 processors, particularly for government-related purposes, complicating the chipmaker's return to China after the Trump administration reversed an effective US ban on such sales. Over the past few weeks, Chinese authorities have sent notices to a range of firms discouraging use of the less-advanced semiconductors, people familiar with the matter said. The guidance was particularly strong against the use of H20s for any government or national security-related work by state enterprises or private companies, said the people, who asked not to be identified because the information is sensitive. The letters didn't, however, constitute an outright ban on H20 use, according to the people. Industry analysts broadly agree that Chinese companies still covet those chips, which perform quite well in certain crucial AI applications. President Donald Trump said Monday that the processor "still has a market" in the Asian country despite also calling it "obsolete."

Beijing's stance could limit Trump's ability to turn his export control about-face into a windfall for government coffers, a deal that highlighted his administration's transactional approach to national security policies long treated as nonnegotiable. Still, Chinese companies may not be ready to jump ship to local semiconductors. "Chips from domestic manufacturers are improving dramatically in quality, but they might not be as versatile for specific workloads that China's domestic AI industry hopes to focus on," said Homin Lee, a senior macro strategist at Lombard Odier in Singapore. Lee added that he anticipates "strong" demand for the chips the Trump administration is allowing Nvidia and AMD to sell.

Rosenblatt Securities analyst Kevin Cassidy said he doesn't anticipate that Nvidia's processor sales to China will be affected because "Chinese companies are going to want to use the best chips available." Nvidia and AMD's chips are superior to local alternatives, he said. Beijing asked companies about that issue in some of its letters, according to one of the people, posing questions such as why they buy Nvidia H20 chips over local versions, whether that's a necessary choice given domestic options, and whether they've found any security concerns in the Nvidia hardware. The notices coincide with state media reports that cast doubt on the security and reliability of H20 processors. Chinese regulators have raised those concerns directly with Nvidia, which has repeatedly denied that its chips contain such vulnerabilities.

The Financial Times reported that some Chinese companies are planning to decrease orders of Nvidia chips in response to the letters. Right now, the people said, China's most stringent chip guidance is limited to sensitive applications, a situation that bears similarities to the way Beijing restricted Tesla vehicles and Apple iPhones in certain institutions and locations over security concerns. China's government also at one point barred the use of Micron Technology Inc. chips in critical infrastructure. It's possible that Beijing may extend its heavier-handed Nvidia and AMD guidance to a wider range of settings, according to one person with direct knowledge of the deliberations, who said that those conversations are in early stages.

Intel

Trump Calls Intel CEO a 'Success' After Demanding Resignation (cnbc.com) 160

Just days after demanding Intel CEO Lip-Bu Tan resign over his past ties to China, President Trump reversed course, calling Tan a "success" following a White House meeting. "I met with Mr. Lip-Bu Tan, of Intel, along with Secretary of Commerce, Howard Lutnick, and Secretary of the Treasury, Scott Bessent," Trump wrote in a post on Truth Social. "The meeting was a very interesting one. His success and rise is an amazing story. Mr. Tan and my Cabinet members are going to spend time together, and bring suggestions to me during the next week. Thank you for your attention to this matter!" CNBC reports: Tan has been an Intel director since 2022, and in March he replaced Pat Gelsinger as CEO. Last week Sen. Tom Cotton, R-Ark., questioned Tan's ties to China. Cotton brought up a past criminal case involving Cadence Design, where Tan had been CEO, and asked whether Intel required Tan to divest from positions in chipmakers linked to the Chinese Communist Party, the People's Liberation Army and any other concerning entities in China.

Trump's latest message marks a stark change in tone from last week. In a Truth Social post on Thursday, the president wrote that Tan "is highly CONFLICTED and must resign, immediately. There is no other solution to this problem." Intel said in a comment later that day that the company, directors and Tan are "deeply committed to advancing U.S. national and economic security interests."

Government

Nvidia and AMD To Pay 15% of China Chip Sale Revenues To US Government (apnews.com) 61

In an unusual arrangement to secure export licenses, Nvidia and AMD have agreed to give the U.S. government 15% of revenue from certain chip sales to China. The Associated Press reports: The Trump administration halted the sale of advanced computer chips to China in April over national security concerns, but Nvidia and AMD revealed in July that Washington would allow them to resume sales of the H20 and MI308 chips, which are used in artificial intelligence development. President Trump confirmed the terms of the unusual arrangement in a Monday press conference while noting that he originally wanted 20% of the sales revenue when Nvidia asked to sell the "obsolete" H20 chip to China. The president credited Nvidia CEO Jensen Huang for negotiating him down to 15%. "So we negotiated a little deal. So he's selling a essentially old chip," Trump said.

Nvidia did not comment about the specific details of the agreement or its quid pro quo nature, but said they would adhere to the export rules laid out by the administration. "We follow rules the U.S. government sets for our participation in worldwide markets. While we haven't shipped H20 to China for months, we hope export control rules will let America compete in China and worldwide," Nvidia wrote in a statement to the AP. "America cannot repeat 5G and lose telecommunication leadership. America's AI tech stack can be the world's standard if we race."

Transportation

Ford Announces Investment To Bring Affordable EVs To Market (freep.com) 130

An anonymous reader quotes a report from the Detroit Free Press: Ford is announcing the creation of a new electric vehicle production system and a new EV platform that will allow the automaker to more efficiently bring several lower-cost EVs to market, the first of which will be a midsize, four-door electric pickup that seats five, to launch in 2027. That pickup, which is expected to start around $30,000, will be assembled at Ford's Louisville Assembly Plant for U.S. and export markets. The Dearborn-based automaker said it will invest $2 billion to retool the Louisville plant starting later this year. [...] Ford's investment in Louisville Assembly is in addition to Ford's previously announced $3 billion commitment for BlueOval Battery Park in Marshall, Michigan, where Ford will make the prismatic LFP batteries, starting next year, for the midsize electric pickup. Together, the nearly $5 billion investments mean Ford expects to create or secure nearly 4,000 direct jobs while strengthening the domestic supply chain with dozens of new U.S.-based suppliers.

Ford executives and Kentucky officials also introduced on Monday, Aug. 11, the new Ford Universal EV Production System, which they said will simplify production and ease operations for workers. Ford leaders also announced the creation of the Ford Universal Electric Vehicle Platform, which will enable the development of "a family of affordable electric vehicles produced at scale." The vehicles will be software-defined with over-the-air updates to keep improving the vehicles over time. "We took a radical approach to solve a very hard challenge: Create affordable vehicles that are breakthrough in every way that matters design, technology, performance, space and cost of ownership and do it with American workers," Ford CEO Jim Farley said in a statement. "Nobody wants to see another good college try by a Detroit automaker to make an affordable vehicle that ends up with idled plants, layoffs and uncertainty."

Farley has teased this announcement since Ford's second-quarter earnings when he said Ford would have a "Model-T moment" on Aug. 11. He's referring to the classic vehicle that helped turn Ford into a mass market automaker and perfect the assembly line process. At that time, Farley said it was critical that Ford unveil an EV strategy that would position it to make money selling the electric cars and effectively compete against the Chinese, who are known for making high-quality, desirable and affordable EVs. "So, this has to be a good business," Farley said of Ford's investments in the new process and platform. "From Day 1, we knew there was no incremental path to success. We empowered a tiny skunkworks team three time zones away from Detroit. We reinvented the line. And we are on a path to be the first automaker to make prismatic LFP batteries in the U.S. We will not rely on imports."
Ford says its new Universal Electric Vehicle Platform "reduces parts by 20% versus a typical vehicle, with 25% fewer fasteners, 40% fewer workstations dock-to-dock in the plant and 15% faster assembly time." The new EV pickup built using this platform is targeting a "starting MSRP at about $30,000, roughly the same as the Model T when adjusted for inflation," adds Farley.

He shared additional details in an interview with Wired, such as how the automaker hired Tesla veterans Doug Field (who also helped lead Apple's now-defunct EV project) and Alan Clarke. "Turns out, Doug and Alan and the team built a propulsion system that was like Apollo 13, managed down to the watt so that our battery could be so much smaller than BYD's," said Farley.
China

The Engineering Marvel That China Hopes Will Help Wean It Off Foreign Energy (wsj.com) 58

China has begun construction of a $167 billion hydropower facility on Tibet's Yarlung Tsangpo River that would generate triple the output of the Three Gorges Dam. The project employs a run-of-the-river design, drilling deep tunnels through mountains to bypass the Yarlung Tsangpo Grand Canyon, where the river drops nearly two vertical miles over 300 miles. Water diverted through the tunnels will drive turbines at both ends without creating a large reservoir. The river currently produces just 2% of its hydropower potential. A $7 billion transmission network will deliver electricity to Guangdong province, Hong Kong, and Macau. China imported nearly a quarter of its energy supply in 2023.
Space

Astrophysicist Proposes Paperclip-Sized Spacecraft Could Travel at Lightspeed to a Black Hole (sciencedaily.com) 58

"It sounds like science fiction: a spacecraft, no heavier than a paperclip, propelled by a laser beam," writes this report from ScienceDaily, "and hurtling through space at the speed of light toward a black hole, on a mission to probe the very fabric of space and time and test the laws of physics."

"But to astrophysicist and black hole expert Cosimo Bambi, the idea is not so far-fetched." Reporting in the Cell Press journal iScience, Bambi outlines the blueprint for turning this interstellar voyage to a black hole into a reality... "We don't have the technology now," says author Cosimo Bambi of Fudan University in China. "But in 20 or 30 years, we might." The mission hinges on two key challenges — finding a black hole close enough to target and developing probes capable of withstanding the journey.

Previous knowledge on how stars evolve suggests that there could be a black hole lurking just 20 to 25 light-years from Earth, but finding it won't be easy, says Bambi. Because black holes don't emit or reflect light, they are virtually invisible to telescopes... "There have been new techniques to discover black holes," says Bambi. "I think it's reasonable to expect we could find a nearby one within the next decade...."

Bambi points to nanocrafts — gram-scale probes consisting of a microchip and light sail — as a possible solution. Earth-based lasers would blast the sail with photons, accelerating the craft to a third of the speed of light. At that pace, the craft could reach a black hole 20 to 25 light-years away in about 70 years. The data it gathers would take another two decades to get back to Earth, making the total mission duration around 80 to 100 years... Bambi notes that the lasers alone would cost around one trillion euros today, and the technology to create a nanocraft does not yet exist. But in 30 years, he says that costs may fall and technology may catch up to these bold ideas.

"If the nanocraft can travel at a velocity close to the speed of light, the mission could last 40-50 years," Bambi writes in the article, while acknowledging his idea is certainly very speculative and extremely challenging..."

"However, we should realize that most of the future experiments in particle physics and astrophysics will likely require long time (for preparation, construction, and data collection) and the work of a few generations of scientists, be very expensive, and in many cases, we will not have other options if we want to make progress in a certain field."
Power

As Electric Bills Rise, Evidence Mounts That U.S. Data Centers Share Blame (apnews.com) 88

"Amid rising electric bills, states are under pressure to insulate regular household and business ratepayers from the costs of feeding Big Tech's energy-hungry data centers..." reports the Associated Press.

"Some critics question whether states have the spine to take a hard line against tech behemoths like Microsoft, Google, Amazon and Meta." [T]he Data Center Coalition, which represents Big Tech firms and data center developers, has said its members are committed to paying their fair share. But growing evidence suggests that the electricity bills of some Americans are rising to subsidize the massive energy needs of Big Tech as the U.S. competes in a race against China for artificial intelligence superiority. Data and analytics firm Wood Mackenzie published a report in recent weeks that suggested 20 proposed or effective specialized rates for data centers in 16 states it studied aren't nearly enough to cover the cost of a new natural gas power plant. In other words, unless utilities negotiate higher specialized rates, other ratepayer classes — residential, commercial and industrial — are likely paying for data center power needs. Meanwhile, Monitoring Analytics, the independent market watchdog for the mid-Atlantic grid, produced research in June showing that 70% — or $9.3 billion — of last year's increased electricity cost was the result of data center demand.

Last year, five governors led by Pennsylvania's Josh Shapiro began pushing back against power prices set by the mid-Atlantic grid operator, PJM Interconnection, after that amount spiked nearly sevenfold. They warned of customers "paying billions more than is necessary." PJM has yet to propose ways to guarantee that data centers pay their freight, but Monitoring Analytics is floating the idea that data centers should be required to procure their own power. In a filing last month, it said that would avoid a "massive wealth transfer" from average people to tech companies.

At least a dozen states are eyeing ways to make data centers pay higher local transmission costs. In Oregon, a data center hot spot, lawmakers passed legislation in June ordering state utility regulators to develop new — presumably higher — power rates for data centers. The Oregon Citizens' Utility Board [a consumer advocacy group] says there is clear evidence that costs to serve data centers are being spread across all customers — at a time when some electric bills there are up 50% over the past four years and utilities are disconnecting more people than ever.

"Some data centers could require more electricity than cities the size of Pittsburgh, Cleveland or New Orleans," the article points out...
AI

Initiative Seeks AI Lab to Build 'American Truly Open Models' (ATOM) (msn.com) 20

"Benchmarking firm Artificial Analysis found that only five of the top 15 AI models are open source," reports the Washington Post, "and all were developed by Chinese AI companies...."

"Now some American executives, investors and academics are endorsing a plan to make U.S. open-source AI more competitive." A new campaign called the ATOM Project, for American Truly Open Models, aims to create a U.S.-based AI lab dedicated to creating software that developers can freely access and modify. Its blueprint calls for access to serious computing power, with upward of 10,000 of the cutting-edge GPU chips used to power corporate AI development. The initiative, which launched Monday, has gathered signatures of support from more than a dozen industry figures. They include veteran tech investor Bill Gurley; Clement Delangue, CEO of Hugging Face, a repository for open-source AI models and datasets; Stanford professor and AI investor Chris Manning; chipmaker Nvidia's director of applied research, Oleksii Kuchaiev; Jason Kwon, chief strategy officer for OpenAI; and Dylan Patel, CEO and founder of research firm SemiAnalysis...

The lack of progress in open-source AI underscores the case for initiatives like ATOM: The U.S. has not produced a major new open-source AI release since Meta's launch of its Llama 4 model in April, which disappointed some AI experts... "A lot of it is a coordination problem," said ATOM's creator, Nathan Lambert, a senior research scientist at the nonprofit Allen Institute for AI who is launching the project in a personal capacity... Lambert said the idea was to develop much more powerful open-source AI models than existing U.S. efforts such as Bloom, an AI language model from Hugging Face, Pythia from EleutherAI, and others. Those groups were willing to take on more legal risk in the name of scientific progress but suffered from underfunding, said Lambert, who has worked at Google's DeepMind AI lab, Facebook AI Research and Hugging Face.

The other problem? The hefty cost of top-performing AI. Lambert estimates that getting access to 10,000 state-of-the-art GPUs will cost at least $100 million. But the funding must be found if American efforts are to stay competitive, he said.

The initiative's web page is seeking signatures, but also asks visitors to the site to "consider how your expertise or resources might contribute to building the infrastructure America needs."
Google

South Korea Postpones Decision To Let Google Maps Work Properly - Again (theguardian.com) 18

South Korea postponed a decision for the second time this year on Friday regarding Google's request to export detailed mapping data to overseas servers, which would enable full Google Maps functionality in the country. The inter-agency committee extended the deadline from August to October to allow further review of security concerns and consultations with industry stakeholders.

South Korea remains one of only a handful of countries alongside China and North Korea where Google Maps fails to function properly, unable to provide directions despite displaying landmarks and businesses. Tourism complaints increased 71% last year, with Google Maps accounting for 30% of all app-related grievances, while local industry groups representing 2,600 companies report 90% opposition to Google's request due to fears of market domination by the US tech company.
China

China Tells Brokers To Stop Touting Stablecoins To Cool Frenzy (bloomberg.com) 5

An anonymous reader shares a report: China told local brokers and other bodies to stop publishing research or hold seminars to promote stablecoins [non-paywalled source], seeking to rein in the asset class to avoid instability. Some leading brokerages and think tanks in late July and earlier this month received guidance from financial regulators, urging them to cancel seminars and halt disseminating research on stablecoins, people familiar with the matter said.

Regulators are also concerned that stablecoins could be exploited as a new tool for fraudulent activities in mainland China, said the people, who asked not to be identified because the details are private.

Intel

How Intel's CEO Helped Create China's Chip Industry (msn.com) 67

Intel CEO Lip-Bu Tan, who faces calls for resignation from President Trump, helped build China's semiconductor industry over four decades. Tan's San Francisco-based Walden International, founded in 1987, was invited by Chinese officials to introduce venture capital to China in 1993, WSJ reported Friday. The firm invested in SMIC, China's largest chip manufacturer, where Tan served as board director for at least 18 years until the Commerce Department restricted the company in 2020. Walden also backed Advanced Micro-Fabrication Equipment, now worth $17 billion and a leader in China's chip-manufacturing sector.

During Tan's tenure as Cadence CEO from 2009-2021, the company sold banned technology to a Chinese university conducting military simulations, resulting in a 2025 guilty plea and $140 million settlement. These investments, once common among Silicon Valley venture capitalists and U.S. university endowments, now appear problematic amid U.S.-China tensions and Washington's restrictions on chip exports to China.

Tan wrote in a blog post late Thursday that there had been a "lot of misinformation" circulating about his past roles. "Over 40+ years in the industry, I've built relationships around the world and across our diverse ecosystem -- and I have always operated within the highest legal and ethical standards," Tan wrote.
Intel

Intel CEO Hits Out at 'Misinformation' After US President Calls on Him To Resign 65

Intel's chief executive Lip-Bu Tan has hit out at "misinformation" over his career after U.S. President Donald Trump alleged the semiconductor industry veteran was "highly conflicted" and should resign. From a report: In a letter to Intel staff published late on Thursday, Tan said that Intel was "engaging" with the Trump administration "to address the matters that have been raised and ensure they have the facts."

"There has been a lot of misinformation circulating about my past roles...I want to be absolutely clear: Over 40+ years in the industry, I've built relationships around the world and across our diverse ecosystem -- and I have always operated within the highest legal and ethical standards," Tan wrote.

Tan's move to reassure staff at Intel, the only US-headquartered company capable of manufacturing advanced chips, came hours after Trump had demanded his resignation in a post on Truth Social. Trump did not detail Tan's alleged conflicts of interest but the U.S. president's broadside followed a letter from Tom Cotton, the Republican head of the Senate intelligence committee, to Intel's chair expressing "concern about the security and integrity of Intel's operations" and Tan's ties to China.
Transportation

China Solves 'Tunnel Boom' Problem With Maglev Trains (theguardian.com) 61

Ancient Slashdot reader Epeeist shares a report from The Guardian: The newest version of the maglev train is capable of traveling at 600km/h (about 370mph). However, the train's engineers have wrestled with the problem of the shock waves which occur as the train exits the mouth of a tunnel. When a high-speed train enters an enclosed space such as a tunnel, air in front is compressed, like in a piston. The resulting fluctuations in air pressure coalesce at the tunnel mouth, generating low-frequency shock waves. These are colloquially known as a "tunnel boom" -- a related, albeit different phenomenon to the "sonic boom" heard as aircraft pass the speed of sound. Tunnel booms pose serious challenges to operational safety, as the shock waves can disturb humans and animals nearby, as well as causing structural damage.

Now, however, researchers have discovered that placing innovative soundproofing buffers at tunnel mouths can reduce shock waves by up to 96%. This promises improvements in operational safety, noise pollution and passenger comfort, as well as safeguarding animals in the vicinity of future lines. [...] The porous structure of the new 100-meter long buffers, combined with porous coatings on the tunnel body, allow the trapped air to escape before the train reaches the tunnel mouth, suppressing the boom in the same way as a silencer fitted to a firearm.

China

China's Solar Giants Quietly Shed a Third of Their Workforces Last Year (zerohedge.com) 27

schwit1 shares a report: China's biggest solar firms shed nearly one-third of their workforces last year, company filings show, as one of the industries hand-picked by Beijing to drive economic growth grapples with falling prices and steep losses. The job cuts illustrate the pain from the vicious price wars being fought across Chinese industries, including solar and electric vehicles, as they grapple with overcapacity and tepid demand. The world produces twice as many solar panels each year as it uses, with most of them manufactured in China.

Longi Green Energy, Trina Solar, Jinko Solar, JA Solar, and Tongwei, collectively shed some 87,000 staff, or 31% of their workforces on average last year, according to a Reuters review of employment figures in public filings.

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