LiveScience brings an update on China's Chang'e-4 — the first spacecraft to ever land on the far side of the moon.

Its Lunar Penetrating Radar has now mapped the lunar subsurface "in finer detail than ever before" by bouncing radio signals deep underground: Their results, which were published Aug. 7 in the Journal of Geophysical Research: Planets, reveal billions of years of previously hidden lunar history. These new data suggest the top 130 feet of the lunar surface are made up of multiple layers of dust, soil, and broken rocks, said lead study author Jianqing Feng, an astrogeological researcher at the Planetary Science Institute in Tucson, Arizona... Farther down, the scientists discovered five distinct layers of lunar lava that seeped across the landscape billions of years ago.

Scientists think our moon formed 4.51 billion years ago, not long after the solar system itself, when a Mars-size object slammed into Earth and broke off a chunk of our planet The moon then continued to be bombarded by objects from space for roughly 200 million years. Some impacts cracked the moon's surface. Like Earth, the moon's mantle at that time contained pockets of molten material called magma, which seeped out through the newly formed cracks in a series of volcanic eruptions, Feng said.

The new data from Chang'e-4 shows that process slowing down over time: Feng and his colleagues found that the layers of volcanic rock grew thinner the closer they were to the moon's surface. This suggests that less lava flowed in later eruptions compared with earlier ones. "[The moon] was slowly cooling down and running out of steam in its later volcanic stage," Feng said. "Its energy became weak over time...."

However, there could still be magma deep underneath the lunar surface, Feng said.

According to the National Business Daily, China's fertility rate in 2022 dropped to a record low of 1.09 from 1.15 in 2021. Reuters reports: The state-backed Daily said the figure from China's Population and Development Research Center put it as having the lowest fertility level among countries with a population of more than 100 million. China's fertility rate is already one of the world's lowest alongside South Korea, Taiwan, Hong Kong and Singapore. China has said it will focus on education, science and technology to improve population quality and strive to maintain a "moderate fertility" level to support economic growth in future.

Hong Kong's Family Planning Association said in a separate release on Tuesday that the number of childless women in the special Chinese administrative region more than doubled from five years ago to 43.2% last year. The percentage of couples with one or two children also tumbled while the average number of children per woman dropped from 1.3 in 2017 to a record low of 0.9 last year, according to its survey.

According to a new Reuters/Ipsos survey, nearly half of American adults support a ban on TikTok. From the report: TikTok, owned by Chinese tech giant ByteDance and used by tens of millions of Americans, has faced calls from U.S. lawmakers for a nationwide ban over concerns about possible Chinese government influence. Some 47% of respondents to the two-day poll, which concluded on Tuesday, said they at least somewhat supported "banning the social media application, TikTok, from use in the United States," while 36% opposed a ban and 17% said they didn't know.

Fifty-eight percent of Republicans favored a ban, compared to 47% of Democrats, the poll showed. The online Reuters/Ipsos poll was conducted nationwide, collecting responses from 1,005 adults, including 443 Democrats and 346 Republicans. It had a credibility interval, a measure of precision, of about 4 percentage points in either direction. Last month, a Pew Research Center survey found that a majority of Americans (59%) believe the social media app is a threat to the national security of the United States.

Facing a rapidly aging population and land scarcity, the Chinese capital is piloting burial spaces with electronic screens instead of headstones. From a report: When someone dies in Beijing, the body is typically cremated and the ashes are buried behind a gravestone in one of the city's public cemeteries. Family and friends gather at the site to light candles and burn incense to pay their respects. Zhang Yin, a local resident in her 40s, chose a very different burial rite when her grandmother died earlier this year: She had her ashes stored in a compartment of a large room at Beijing's Taiziyu Cemetery, almost like a safe deposit box at a bank. An electronic screen on the door of the compartment displaying pictures and videos of the deceased replaces the traditional headstone. It's a land-saving option that's also more affordable and dovetails with the growing trend of Chinese families wanting more personalized funerals for their loved ones.

"Traditional cemeteries are outdoors, exposed to the wind and sun," Zhang says. "If you bring your kids there, they will only see bare graves, which has no meaning to them. For digital cemeteries, families can watch the photo display of deceased relatives together in a hall." Zhang says her grandfather gave his approval for the digital funeral because he's very receptive to new things -- and, by coincidence, the niche storing her grandmother's ashes is the same as the number of her grandmother's old house. Both local governments and funeral companies in China are experimenting with new ways of conducting burial rites as the country confronts urban land scarcity and a rapidly aging population.

New York City is banning TikTok from city-owned devices and requiring agencies to remove the app within the next 30 days. From a report: The directive issued Wednesday comes after a review by the NYC Cyber Command, which a city official said found that TikTok "posed a security threat to the city's technical networks." Starting immediately, city employees are barred from downloading or using the app and accessing TikTok's website from any city-owned devices.

"While social media is great at connecting New Yorkers with one another and the city, we have to ensure we are always using these platforms in a secure manner," a New York City Hall spokesperson said in a statement to The Verge Wednesday. "NYC Cyber Command regularly explores and advances proactive measures to keep New Yorkers' data safe." The city cited US Office of Management and Budget guidelines discouraging TikTok's use on government devices as well as federal legislation banning the app that was passed earlier this year.

One of the most productive scientific collaborations of the 21st century is pulling apart, as deteriorating relations between the U.S. and China lead researchers to sever ties. From a report: The decoupling, which began in recent years with investigations into Chinese researchers in the U.S., has accelerated as tensions have risen between the superpowers. Now some U.S. lawmakers are pushing to let a landmark agreement to cooperate on science and technology, signed in 1979 and renewed routinely since, expire this month. China has built itself into a powerful engine of scientific discovery in recent decades, partly with American help, and many in Washington fear that China could gain a security and military advantage unless the U.S. takes decisive steps to cut off cooperation in scientific research.

Many scientists warn, however, that Washington would be severing ties as China is making its greatest contributions to scientific advancements, and cutting it off risks slowing American progress in critical areas such as biotechnology, clean energy and telecommunications. While the U.S. remains the world's pre-eminent science power, fundamental scientific research has grown borderless in the era of globalization, much as business has. More than 40% of America's scientific production -- measured by the number of high-quality papers that U.S.-based scientists produce -- involves cooperation with researchers abroad, according to Clarivate, a London-based data firm that tracks global scientific research. China and the U.S. are each other's No. 1 partner in producing scientific research, with collaborative research between the two consistently among the most-cited papers across fields, according to an analysis of Clarivate's data by Caroline Wagner, a professor of public policy at Ohio State University.

China launched what is thought to be the world's first geosynchronous orbit synthetic aperture radar satellite on Saturday. SpaceNews reports: A Long March 3B rocket lifted off from Xichang Satellite Launch Center in southwest China at 1:36 p.m. Eastern (1736 UTC) Aug. 12. The Land Exploration-4 01 (Ludi Tance-4 (01)) satellite successfully entered geosynchronous transfer orbit, the China Aerospace Science and Technology Corp., (CASC) announced within an hour of liftoff. Few details of the satellite were provided by CASC. However the group's "blue book" outlining plans for 2023 released in January noted the launch of a "high-orbit 20-meter [resolution] SAR satellite."

The L-band synthetic aperture radar (SAR) satellite will provide all-day, all-weather observation of China and surrounding areas, boosting the country's disaster prevention, reduction, and relief capabilities. The land observation satellite series and "high-orbit SAR technology" are listed in the country's Medium and Long Term Development Plan for Civilian Space Infrastructure (2015-2025). The plan includes establishing high and medium resolution optical and synthetic aperture radar constellations for a range of land, marine and atmospheric monitoring. The series is separate from the China High-resolution Earth Observation System (CHEOS), which consists of Gaofen ("high resolution") satellites. China's Gaofen-4 satellite is a GEO optical satellite. SAR at GEO, while providing much lower resolution than satellites in low Earth orbit, can provide constant coverage and imagery despite cloud cover.

It is not yet known what orbital scheme the Land Exploration-4 (01) satellite will enter. An inclined GEO orbit would produce a "figure eight" ground track over the area of intended coverage. Chinese academics from the Beijing Institute of Technology have produced a study of various schemes, while others have published research into modified signal models for GEO SAR. The (01) designation suggests China could launch other SAR satellites into geosynchronous orbits. The satellite was developed by the China Academy of Spacecraft Technology (CAST.)

US Representative Don Bacon said he is among those whose emails were hacked in an espionage campaign that Microsoft has attributed to China. From a report:Bacon, a Republican from Nebraska and a strong advocate for US military support to Taiwan, posted on social media that the FBI had notified him that the Chinese Communist Party hacked into his personal and campaign emails over the course of a month, from May 15 to June 16. "The CCP hackers utilized a vulnerability in the Microsoft software, and this was not due to 'user error,'" he wrote on X, the social media platform formerly known as Twitter.

Bacon, a member of the House Armed Services Committee, received an email from Microsoft indicating he may have been hacked and advising him to change his password on June 16, according to Maggie Sayers, Bacon's press secretary. She said that following subsequent notification from the FBI that he had been hacked, Bacon determined emails relating to political strategy, fundraising and personal banking information may have been breached. As a former US Air Force intelligence officer, he is careful to avoid writing sensitive emails relating to China and Taiwan, she said.

An anonymous reader shared this report from The New York Times: More than $1.7 trillion worldwide is expected to be invested in technologies such as wind, solar power, electric vehicles and batteries globally this year, according to the International Energy Agency, compared with just over $1 trillion in fossil fuels. That is by far the most ever spent on clean energy in a year. Those investments are driving explosive growth. China, which already leads the world in the sheer amount of electricity produced by wind and solar power, is expected to double its capacity by 2025, five years ahead of schedule. In Britain, roughly one-third of electricity is generated by wind, solar and hydropower. And in the United States, 23 percent of electricity is expected to come from renewable sources this year, up 10 percentage points from a decade ago... [F]rom Beijing to London, Tokyo to Washington, Oslo to Dubai, the energy transition is undeniably racing ahead...

[C]lean energy became cheap far faster than anyone expected. Since 2009, the cost of solar power has plunged by 83 percent, while the cost of producing wind power has fallen by more than half. The price of lithium-ion battery cells fell 97 percent over the past three decades. Today, solar and wind power are the least expensive new sources of electricity in many markets, generating 12 percent of global electricity and rising... The rapid drop in costs for solar energy, wind power and batteries can be traced to early government investment and steady improvements over time by hundreds of researchers, engineers and entrepreneurs around the world. "The world has produced nearly three billion solar panels at this point, and every one of those has been an opportunity for people to try to improve the process," said Gregory Nemet, a solar power expert at the University of Wisconsin-Madison. "And all of those incremental improvements add up to something very dramatic." An equally potent force, along with the technological advances, has been an influx of money — in particular, a gusher since 2020 of government subsidies...

In the United States, President Biden signed a trio of laws during his first two years in office that allocated unprecedented funds for clean energy: A $1 trillion bipartisan infrastructure law provided money to enhance the power grid, buy electric buses for schools and build a national network of electric vehicle chargers... Combined, the three laws have prompted companies to announce at least $230 billion in manufacturing investments so far... The U.S. solar industry installed a record 6.1 gigawatts of capacity in the first quarter of 2023, a 47 percent increase over the same period last year. And those low costs have led many of the United States' biggest corporations, such as Alphabet, Amazon and General Motors, to purchase large amounts of wind and solar power...

Quantum computing could turbo-charge AI into something "massively, universally transformative," argues the South China Morning Post, citing a quote from theoretical physicist Michio Kaku. "AI has the ability to learn new, complex tasks, and quantum computers can provide the computational muscle it needs..."

"AI will give us the ability to create learning machines that can begin to mimic human abilities, while quantum computers may provide the calculational power to finally create an intelligent machine." Where AI brings an ability to self-improve and learn from its mistakes, quantum computers add speed and power. Google CEO Sundar Pichai has said "AI can accelerate quantum computing, and quantum computing can accelerate AI...."

Complex calculations that would take classical supercomputers thousands of years to crunch could, in theory, be completed by quantum computers in minutes... In expectation of its advantages, the automotive industry is already collaborating with pioneers in the quantum-computing arena. Daimler has partnered with IBM, Volkswagen with D-Wave Systems (a Canadian quantum-computing firm) and Hyundai with IonQ. "If you can increase the energy density of your battery by another factor of two, three or four, then instead of 300 miles (480km), you can go 600 miles and 1,200 miles on [one] charge," says Kim. "That actually starts to cross the threshold where they become so much more attractive than fossil fuel. And then we can really make an impact on global warming and all these problems..."

Similarly, the mysteries of carbon sequestration could be unravelled by quantum computing, with clear benefits for the efforts to reverse global warming. Drug design at the molecular level could be revolutionised, opening up new avenues for vaccines and, for example, personalised cancer treatment. There's no doubt about it: with effective quantum computing our understanding of chemical processes could become godlike. Finance and investment, too, could be revolutionised by the qubit. The huge range of factors that produce market fluctuations allow for an almost infinite range of possible outcomes, and modelling these possibilities would be relatively simple for quantum computers. Forecasts of market movements would become far more accurate...

For many physicists and mathematicians, every step of the journey towards functional and world-changing quantum computers assumes acknowledgement of an even more profound goal: a greater understanding of the nature of reality. This could also mean that the very nature of understanding has to be reconsidered.
The article suggests we "occupy ourselves with the dawning realisation that something philosophically far-reaching has begun to percolate into our shared consciousness from the laboratories of the world's quantum pioneers."

The Verge writes that "LK-99 hasn't turned out to be the miraculous superconductor some people initially claimed it was..." [T]he results so far indicate that LK-99 is not a superconductor, at room temperature or otherwise. A slew of research groups have released studies that counter claims originally made about LK-99. "With a great deal of sadness, we now believe that the game is over. LK99 is NOT a superconductor, not even at room temperatures (or at very low temperatures). It is a very highly resistive poor quality material. Period. No point in fighting with the truth," the University of Maryland's Condensed Matter Theory Center (CMTC) posted on August 7th... [The last words of their tweet? "Data have spoken."]

Labs hurriedly published their own results on ArXiv, the same server for preprints (papers that haven't undergone peer review) where the original papers on LK-99 first appeared. Now, a body of evidence has piled up that disproves claims about LK-99. "There is no sign of superconductivity in LK-99 at room temperature," says one preprint from the CSIR-National Physical Laboratory in India. (That was one of the papers cited by the University of Maryland's Condensed Matter Theory Center this week when it posted that "the game is over....") [H]opes that levitation meant that LK-99 is a superconductor were dashed this week after another preprint posed another explanation for why the material might float. The International Center for Quantum Materials in China found evidence that the material is ferromagnetic. That means it can be magnetized and then attracted or repelled by other magnetic materials (iron, for example, is ferromagnetic)...

[T]here are already well over a dozen papers on ArXiv casting doubt on LK-99. "There may be room temperature superconductors to find, but this does not seem to be one," Chris Grovenor, professor of materials at the University of Oxford and director of the Centre for Applied Superconductivity, tells The Verge in an email.
The Washington Post reports that one of physicists who co-authored the discovery paper "countered in an email that other research groups' failure to replicate their results are probably because they lack 'know how' in developing the sample the same way."

Alibaba Group hasn't been able to completely fulfill demand for AI training from clients because of global supply constraints, its top executive said, suggesting a shortage of critical components such as artificial intelligence chips is weighing on Chinese efforts to ramp up in the cutting-edge technology. From a report: "In the past quarter, we have received strong demand for model training and related services on cloud infrastructure, which were only partially fulfilled due to the near-term supply chain constraints globally," Chairman and Chief Executive Officer Daniel Zhang, who steps down in September, told analysts on a conference call. He will focus on Alibaba's cloud business full-time after ceding his dual roles to Alibaba co-founders Joseph Tsai and Eddie Wu. A shortage of high-powered semiconductors is undermining Chinese efforts to keep pace with the US in AI. Washington has banned Chinese firms from buying the most advanced chips made by Nvidia, impeding attempts to build rivals to OpenAI's ChatGPT.

Private equity and venture capital funds targeted in Biden administration's crackdown. From a report: After President Joe Biden announced a ban on US investment in some of China's critical tech industries, the founder of a Shanghai-based semiconductor start-up felt forced to react. "After the news came out, I was determined to move the team out of China, at least part of the team," the person said, asking not to be named because of the sensitivity of the subject. "Otherwise, the financing will be very limited." The US ban, announced in an executive order on Wednesday and due to come into force next year, aims to block investment in quantum computing, advanced chips and artificial intelligence in an effort to stop China's military from accessing American funding and knowhow.

For their part, US investors are trying to work out the potential impact of Biden's order on their holdings in China and weighing up strategies to comply or exit. Private equity groups General Atlantic, Warburg Pincus and Carlyle Group have poured billions into China in recent years as they sought the huge returns from betting on the nation's emergence as a technological superpower. Seeing the writing on the wall, though, many have already pulled back. Buyout groups struck deals in China worth $47bn in 2021, but that fell rapidly to just $2.4bn in 2022 and $2.8bn so far this year, figures from Dealogic show.

According to the Financial Times, China's internet giants have ordered more than $5 billion worth of high-performance Nvidia chips for building generative AI systems. Reuters reports: Baidu, TikTok-owner ByteDance, Tencent and Alibaba have made orders worth $1 billion to acquire about 100,000 A800 processors from the U.S. chipmaker to be delivered this year, the FT reported, citing multiple people familiar with the matter. The Chinese groups had also purchased a further $4 billion worth of graphics processing units to be delivered in 2024, according to the report.

The Biden administration last October issued a sweeping set of rules designed to freeze China's semiconductor industry in place while the U.S. pours billions of dollars in subsidies into its chip industry. Nvidia offers the A800 processor in China to meet export control rules after U.S. officials asked the company to stop exporting its two top computing chips to the country for AI-related work. Nvidia's finance chief said in June that restrictions on exports of AI chips to China "would result in a permanent loss of opportunities for the U.S. industry", though the company expected no immediate material impact.

An anonymous reader quotes a report from the Associated Press: President Joe Biden signed an executive order Wednesday to block and regulate high-tech U.S.-based investments going toward China -- a move the administration said was targeted but it also reflected an intensifying competition between the world's two biggest powers. The order covers advanced computer chips, micro electronics, quantum information technologies and artificial intelligence. Senior administration officials said that the effort stemmed from national security goals rather than economic interests, and that the categories it covered were intentionally narrow in scope. The order seeks to blunt China's ability to use U.S. investments in its technology companies to upgrade its military while also preserving broader levels of trade that are vital for both nations' economies.

The officials previewing the order said that China has exploited U.S. investments to support the development of weapons and modernize its military. The new limits were tailored not to disrupt China's economy, but they would complement the export controls on advanced computer chips from last year that led to pushback by Chinese officials. The Treasury Department, which would monitor the investments, will announce a proposed rulemaking with definitions that would conform to the presidential order and go through a public comment process. The goals of the order would be to have investors notify the U.S. government about certain types of transactions with China as well as to place prohibitions on some investments. Officials said the order is focused on areas such as private equity, venture capital and joint partnerships in which the investments could possibly give countries of concern such as China additional knowledge and military capabilities. The Chinese Ministry of Commerce responded in a statement early Thursday that it has "serious concern" about the order and "reserves the right to take measures."

"We hope the U.S. side respects the laws of the market economy and the principle of fair competition, does not artificially obstruct global economic and trade exchanges and cooperation and does not put up obstacles for the recovery and growth of the world economy."

The Chinese Ministry of Commerce also said the executive order "seriously deviates from the market economy and fair competition principles the United States has always advocated. It affects the normal business decisions of enterprises, disrupts the international economic and trade order and seriously disrupts the security of global industrial and supply chains."

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

The U.S. Commerce Department said on Wednesday that more than 460 companies have expressed interested in winning government semiconductor subsidy funding in a bid to boost the country's competitiveness with China's science and technology efforts. From a report: The White House is marking the one-year anniversary on Wednesday of President Joe Biden's signing of the landmark "Chips for America" legislation providing $52.7 billion in subsidies for U.S. semiconductor production, research and workforce development. Biden said in a statement that companies have announced $166 billion in semiconductors and electronics manufacturing over the last year, adding the law will "make America once again a leader in semiconductor manufacturing and less dependent on other countries for our electronics or clean energy supply chains."

The Commerce Department began accepting applications in June for the $39-billion subsidy program for U.S. semiconductor manufacturing as well as equipment and materials for making chips but has not yet issued awards. "We're finally making the investments that are long overdue to secure our economic and national security," Commerce Secretary Gina Raimondo told reporters. "We need to move quickly but it's more important we get it right."

China will require all mobile app providers in the country to file business details with the government, its information ministry said, marking Beijing's latest effort to keep the industry on a tight leash. From a report: The Ministry of Industry and Information Technology (MIIT) said late on Tuesday that apps without proper filings will be punished after the grace period that will end in March next year, a move that experts say would potentially restrict the number of apps and hit small developers hard. You Yunting, a lawyer with Shanghai-based DeBund Law Offices, said the order is effectively requiring approvals from the ministry. The new rule is primarily aimed at combating online fraud but it will impact on all apps in China, he said.

Rich Bishop, co-founder of app publishing firm AppInChina, said the new rule is also likely to affect foreign-based developers which have been able to publish their apps easily through Apple's App Store without showing any documentation to the Chinese government. Bishop said that in order to comply with the new rules, app developers now must either have a company in China or work with a local publisher.

TSMC is committing $3.8 billion to establish its first European factory in Germany, benefiting from significant state support for the $11 billion project as Europe aims to shorten supply chains. Reuters reports: The plant, which will be TSMC's third outside of traditional manufacturing bases Taiwan and China, is central to Berlin's ambition to foster the domestic semiconductor industry its car industry will need to remain globally competitive. Germany, which has been courting the world's largest contract chipmaker since 2021, will contribute up to 5 billion euros to the factory in Dresden, capital of the eastern state of Saxony, German officials said.

"Germany is now probably becoming the major location for semiconductor production in Europe," German Chancellor Olaf Scholz said, less than two months after Intel announced a 30 billion euro plan to build two chip-making plants in the country. "That is important for the resilience of production structures around the world, but it is also important for the future viability of our European continent, and it is of course particularly important for the future viability of Germany."

TSMC said it would invest up to 3.499 billion euros into a subsidiary, European Semiconductor Manufacturing Company (ESMC), of which it will own 70%. Germany's Bosch and Infineon and the Netherlands' NXP (NXPI.O) will each own 10% of the plant, which will make up to 40,000 wafers a month for cars and industrial and home products when it opens in 2017. The factory will cost around 10 billion euros in total.

Amazon is the most successful manufacturer of Arm server chips, accounting for just over half of Arm-based server CPUs currently deployed, while some chipmakers are also now betting on Arm-based Windows PCs. From a report: This information comes from a report issued by Bernstein Research which estimates that nearly 10 percent of servers across the world contain Arm processors, and 40 percent of those are located in China, as we reported earlier. But that total is beaten by just one company -- Amazon -- which has slightly above 50 percent of all Arm server CPUs in the world deployed in its Amazon Web Services (AWS) datacenters, said the analyst.

Amazon currently uses its own Graviton family of chips, designed by the Annapurna Labs division of Amazon Web Services and introduced to the world back in 2018, which are for its own internal use only. The latest iteration is the Graviton3E for high-performance computing applications, introduced towards the end of 2022. According to Bernstein, because these chips were optimized for the specific needs of AWS, the company is able to fit in more cores per socket or per rack and the chips consume less power, translating to lower spending on space and cooling.