Scientists at Fermi National Accelerator Laboratory have observed the first neutrino interactions in the Short-Baseline Near Detector (SBND), marking a significant milestone in their efforts to explore neutrino oscillations and search for a potential fourth neutrino flavor that could challenge the Standard Model of particle physics. Phys.org reports: SBND is the final element that completes Fermilab's Short-Baseline Neutrino (SBN) Program and will play a critical role in solving a decades-old mystery in particle physics. Getting SBND to this point has been an international effort. The detector was built by an international collaboration of 250 physicists and engineers from Brazil, Spain, Switzerland, the United Kingdom and the United States. [...] The Short Baseline Neutrino Program at Fermilab will perform searches for neutrino oscillation and look for evidence that could point to this fourth neutrino. SBND is the near detector for the Short Baseline Neutrino Program while ICARUS, which started collecting data in 2021, is the far detector. A third detector called MicroBooNE finished recording particle collisions with the same neutrino beamline that same year.

The Short Baseline Neutrino Program at Fermilab differs from previous short-baseline measurements with accelerator-made neutrinos because it features both a near detector and far detector. SBND will measure the neutrinos as they were produced in the Fermilab beam and ICARUS will measure the neutrinos after they've potentially oscillated. So, where previous experiments had to make assumptions about the original composition of the neutrino beam, the SBN Program will definitively know. "Understanding the anomalies seen by previous experiments has been a major goal in the field for the last 25 years," said Schmitz. "Together SBND and ICARUS will have outstanding ability to test the existence of these new neutrinos."

After tonight's ABC presidential debate, Taylor Swift announced her support for Vice President Kamala Harris in the upcoming presidential election after AI-generated images falsely depicted her endorsing Donald Trump. "Recently I was made aware that AI of 'me' falsely endorsing Donald Trump's presidential run was posted to his site. It really conjured up my fears around AI, and the dangers of spreading misinformation," Swift wrote in an Instagram post. "It brought me to the conclusion that I need to be very transparent about my actual plans for this election as a voter. The simplest way to combat misinformation is with the truth." The Verge reports: Her post references an incident in late August, in which Trump shared a collection of images to Truth Social intended to show support for his presidential campaign. Some of the photos depict "Swifties for Trump," and another obviously AI-generated image shows Swift herself in an Uncle Sam-type image with text reading, "Taylor wants YOU to vote for Donald Trump." The former president captioned the post, "I accept!" [...]

This wasn't the first time AI images of Swift were circulated on social media. Earlier this year, nonconsensual sexualized images of her made using AI were shared on X. That incident prompted the White House to call for legislation to "deal" with the issue.

An anonymous reader quotes a report from Data Center Dynamics: Google has signed a $10 million deal to pull 100,000 tons of carbon dioxide out of the air. The company will buy direct air capture (DAC) credits from startup Holocene, to be delivered in the early 2030s. The deal is the lowest price on record for DAC, at $100 per ton -- a price the Department of Energy previously said was needed to make carbon capture mainstream. Google will provide the funds up front, but there is no guarantee that Holocene will hit that goal. Running Tide, a carbon removal company that Microsoft paid to capture 12,000 tons of CO2 in 2023, shut down in 2024. The $100 price was also made possible thanks to the US government's 45Q tax credit, which provides DAC suppliers $180 per ton of carbon removed.

Holocene passes air through a waterfall with an amino acid added to it which binds CO2. This is then mixed with guanidine to form a solid crystal mass. Next, the amino acid is sent back to the beginning of the loop, while the solid is lightly heated to release pure CO2 -- which can then be stored. The company plans to capture and store 100,000 tons of CO2 by the early 2030s. "The structure of this partnership -- providing immediate funding to achieve an ambitious but important price in the medium term -- is just one way to support carbon removal as it scales," Randy Spock, carbon credits and removals lead, said.

Ars Technica's Benj Edwards writes: In an age when you can get just about anything online, it's probably no surprise that you can buy a diamond-making machine for $200,000 on Chinese eCommerce site Alibaba. If, like me, you haven't been paying attention to the diamond industry, it turns out that the availability of these machines reflects an ongoing trend toward democratizing diamond production -- a process that began decades ago and continues to evolve. [...] Today, there are two primary methods for creating lab-grown diamonds: the HPHT process and chemical vapor deposition (CVD). Both types of machines are now listed on Alibaba, with prices starting at around $200,000, as pointed out in a Hacker News comment by engineer John Nagle (who goes by "Animats" on Hacker News). A CVD machine we found is more pricey, at around $450,000.

While the idea of purchasing a diamond-making machine on Alibaba might be intriguing, it's important to note that operating one isn't as simple as plugging it in and watching diamonds form. According to Lakha's article, these machines require significant expertise and additional resources to operate effectively. For an HPHT press, you'd need a reliable source of high-quality graphite, metal catalysts like iron or cobalt, and precise temperature and pressure control systems. CVD machines require a steady supply of methane and hydrogen gases, as well as the ability to generate and control microwaves or hot filaments. Both methods need diamond seed crystals to start the growth process. Moreover, you'd need specialized knowledge to manage the growth parameters, handle potentially hazardous materials and high-pressure equipment safely, and process the resulting raw diamonds into usable gems or industrial components. The machines also use considerable amounts of energy and require regular maintenance. Those factors may make the process subject to some regulations that are far beyond the scope of this piece. In short, while these machines are more accessible than ever, turning one into a productive diamond-making operation would still require significant investment in equipment, materials, expertise, and safety measures. But hey, a guy can dream, right?

With electricity demand from AI becoming so "crazy," Oracle's Larry Ellison announced the company is designing a data center that will be powered by three small nuclear reactors capable of providing more than a gigawatt of electricity. "The location and the power place we've located, they've already got building permits for three nuclear reactors," Ellison said. "These are the small modular nuclear reactors to power the data center. This is how crazy it's getting. This is what's going on." CNBC reports: Small modular nuclear reactors are new designs that promise to speed the deployment of reliable, carbon-free energy as power demand rises from data centers, manufacturing and the broader electrification of the economy. Generally, these reactors are 300 megawatts or less, about a third the size of the typical reactor in the current U.S. fleet. They would be prefabricated in several pieces and then assembled on the site, reducing the capital costs that stymie larger plants.

Right now, small modular reactors are a technology of the future, with executives in the nuclear industry generally agreeing that they won't be commercialized in the U.S. until the 2030s. There are currently three operational small modular reactors in the world, according to the Nuclear Energy Agency. Two are in China and Russia, the central geopolitical adversaries of the U.S. A test reactor is also operational in Japan.

South Korean police have arrested two former Samsung executives for allegedly leaking $3.2 billion worth of Samsung secrets to China to aid in building 20nm DRAM chips. Tom's Hardware reports: The authorities reported that one of the arrested suspects, 66-year-old Mr. Choi, set up a joint venture building chips in China alongside some local officials and served as its CEO. He was allegedly assisted by a plant designer, Mr. Oh, in this venture, while he also attempted to recruit other South Korean experts to work for him. However, Choi's arrest comes after being suspected of leaking Samsung memory technologies to build 20nm DRAM chips at the Chinese factory, Chengdu Gaozhen.

Samsung is one of the leading memory manufacturers, working with other major companies like Nvidia to produce VRAM while offering its own storage and memory solutions. The police said Choi's move "weakened the nation's competitiveness when the countries are in a global chip war." With the capture of the company's head, the authorities claim that this will stop the operation of the Chinese venture. However, investigators are still looking into the case to determine if other cases of industrial espionage will spring up from this case.

An anonymous reader quotes a report from Gizmodo: Within the next several months, Nevada plans to launch a generative AI system powered by Google that will analyze transcripts of unemployment appeals hearings and issue recommendations to human referees about whether or not claimants should receive benefits. The system will be the first of its kind in the country and represents a significant experiment by state officials and Google in allowing generative AI to influence a high-stakes government decision -- one that could put thousands of dollars in unemployed Nevadans' pockets or take it away. Nevada officials say the Google system will speed up the appeals process -- cutting the time it takes referees to write a determination from several hours to just five minutes, in some cases -- helping the state work through a stubborn backlog of cases that have been pending since the height of the COVID-19 pandemic.

The tool will generate recommendations based on hearing transcripts and evidentiary documents, supplying its own analysis of whether a person's unemployment claim should be approved, denied, or modified. At least one human referee will then review each recommendation, said Christopher Sewell, director of the Nevada Department of Employment, Training, and Rehabilitation (DETR). If the referee agrees with the recommendation, they will sign and issue the decision. If they don't agree, the referee will revise the document and DETR will investigate the discrepancy. "There's no AI [written decisions] that are going out without having human interaction and that human review," Sewell said. "We can get decisions out quicker so that it actually helps the claimant."

Judicial scholars, a former U.S. Department of Labor official, and lawyers who represent Nevadans in appeal hearings told Gizmodo they worry the emphasis on speed could undermine any human guardrails Nevada puts in place. "The time savings they're looking for only happens if the review is very cursory," said Morgan Shah, director of community engagement for Nevada Legal Services. "If someone is reviewing something thoroughly and properly, they're really not saving that much time. At what point are you creating an environment where people are sort of being encouraged to take a shortcut?" Michele Evermore, a former deputy director for unemployment modernization policy at the Department of Labor, shared similar concerns. "If a robot's just handed you a recommendation and you just have to check a box and there's pressure to clear out a backlog, that's a little bit concerning," she said. In response to those fears about automation bias Google spokesperson Ashley Simms said "we work with our customers to identify and address any potential bias, and help them comply with federal and state requirements." "There's a level of risk we have to be willing to accept with humans and with AI," added Amy Perez, who oversaw unemployment modernization efforts in Colorado and at the U.S. Department of Labor. "We should only be putting these tools out into production if we've established it's as good as or better than a human."

wiredmikey shares a report from SecurityWeek: Microsoft on Tuesday raised an alarm for in-the-wild exploitation of a critical flaw in Windows Update, warning that attackers are rolling back security fixes on certain versions of its flagship operating system. The Windows flaw, tagged as CVE-2024-43491 and marked as actively exploited, is rated critical and carries a CVSS severity score of 9.8/10. Redmond's documentation of the bug suggests a downgrade-type attack similar to the 'Windows Downdate' issue discussed at this year's Black Hat conference. Microsoft's bulletin reads: "Microsoft is aware of a vulnerability in Servicing Stack that has rolled back the fixes for some vulnerabilities affecting Optional Components on Windows 10, version 1507 (initial version released July 2015). This means that an attacker could exploit these previously mitigated vulnerabilities on Windows 10, version 1507 (Windows 10 Enterprise 2015 LTSB and Windows 10 IoT Enterprise 2015 LTSB) systems that have installed the Windows security update released on March 12, 2024 -- KB5035858 (OS Build 10240.20526) or other updates released until August 2024. All later versions of Windows 10 are not impacted by this vulnerability."

To protect against this exploit, Microsoft says Windows users should install this month's Servicing stack update (SSU KB5043936) and the September 2024 Windows security update (KB5043083), in that order.

Earlier today, Sony unveiled the $699.99 PlayStation 5 Pro -- a mid-generation upgrade model for the PlayStation 5 that requires a separate $79.99 disc drive if you want to play your physical games. As The Verge's Jay Peters writes, the announcement "may have marked the beginning of the end for game console disc drives." From the report: Microsoft is clearly eyeing the discless direction with Xbox as well. The more affordable Xbox Series S can't play discs, and there's a discless Series X in white that's set to launch later this year. Last year's giant Xbox leak revealed a cylindrical, "adorably all digital" Xbox Series X redesign too. That hasn't been announced as an official product, but it shows a disc-free future is on Microsoft's mind. It seems likely that Sony and Microsoft are testing the waters for going all-digital for the PlayStation 6 and the next generation Xbox -- or at least offering disc drives separately. It's like Apple removing the disc drive all over again.

But this time it's not just the people making the devices. Retailers are stepping back from physical media, too. Redbox is toast. Best Buy said last year that it would stop carrying physical movies, and Target recently confirmed that it would be all but ditching DVDs in its physical stores. I know movies aren't video games, but it doesn't seem like a big leap that brick-and-mortar stores might stop carrying physical video games down the line; UK retailer GAME has already ended video game trade-ins.

An anonymous reader quotes a report from the Associated Press: A daredevil billionaire rocketed back into orbit Tuesday, aiming to perform the first private spacewalk and venture farther than anyone since NASA's Apollo moonshots. Unlike his previous chartered flight, tech entrepreneur Jared Isaacman shared the cost with SpaceX this time around, which included developing and testing brand new spacesuits to see how they'll hold up in the harsh vacuum. If all goes as planned, it will be the first time private citizens conduct a spacewalk, but they won't venture away from the capsule. Considered one of the riskiest parts of spaceflight, spacewalks have been the sole realm of professional astronauts since the former Soviet Union popped open the hatch in 1965, closely followed by the U.S. Today, they are routinely done at the International Space Station.

Isaacman, along with a pair of SpaceX engineers and a former Air Force Thunderbirds pilot, launched before dawn aboard a SpaceX Falcon 9 rocket from Florida. The spacewalk is scheduled for Thursday, midway through the five-day flight. But first the passengers are shooting for way beyond the International Space Station -- an altitude of 870 miles (1,400 kilometers), which would surpass the Earth-lapping record set during NASA's Project Gemini in 1966. Only the 24 Apollo astronauts who flew to the moon have ventured farther. The plan is to spend 10 hours at that height -- filled with extreme radiation and riddled with debris -- before reducing the oval-shaped orbit by half. Even at this lower 435 miles (700 kilometers), the orbit would eclipse the space station and even the Hubble Space Telescope, the highest shuttle astronauts flew.

All four wore SpaceX's spacewalking suits because the entire Dragon capsule will be depressurized for the two-hour spacewalk, exposing everyone to the dangerous environment. Isaacman and SpaceX's Sarah Gillis will take turns briefly popping out of the hatch. They'll test their white and black-trimmed custom suits by twisting their bodies. Both will always have a hand or foot touching the capsule or attached support structure that resembles the top of a pool ladder. There will be no dangling at the end of their 12-foot (3.6-meter) tethers and no jetpack showboating. Only NASA's suits at the space station come equipped with jetpacks, for emergency use only.

It's hard to get 42 states to agree on much. But a bipartisan group of attorneys general on Tuesday demanded that Congress require Surgeon General warning labels on social media apps to help curtail addiction and a mental health crisis among young adults. From a report: "As state Attorneys General, we sometimes disagree about important issues, but all of us share an abiding concern for the safety of the kids in our jurisdictions -- and algorithm-driven social media platforms threaten that safety," the 42 attorneys general said in a letter to Congress. States have taken legal action against a number of social media companies, including Meta and TikTok. But they argue more needs to be done in Washington to alert people to the dangers social media platforms present.

"In addition to the states' historic efforts, this ubiquitous problem requires federal action -- and a surgeon general's warning on social media platforms, though not sufficient to address the full scope of the problem, would be one consequential step toward mitigating the risk of harm to youth," the attorneys general said. The letter echoed much of what Surgeon General Vivek Murthy outlined in a scathing New York Times op-ed in June, that drew a direct comparison between the apps -- TikTok, Instagram, Facebook, Snapchat and others -- to cancer causing cigarettes.

Murthy cited several studies, including a 2019 American Medical Association study published in JAMA that showed teens who spend three hours a day on social media double their risk of depression. Teens spend nearly five hours a day on social media apps, according to a Gallup poll.

An anonymous reader shares a report: Over successive administrations, the U.S. government has used stiff trade restrictions to try to stifle the Chinese telecom giant Huawei. In turn, the company never misses an opportunity to show that it is still standing. Last year, at the tail end of a visit to China by Gina Raimondo, the U.S. commerce secretary, Huawei unveiled a smartphone that was powered by an advanced semiconductor made in China. The chip was exactly the kind of technology that the United States, in an effort led by Ms. Raimondo, had tried to prevent China from developing.

The Huawei phone, called the Mate 60 Pro, was heralded in China as the triumph of a national champion over American constraints. It sold out within minutes on Chinese e-commerce platforms. Many shoppers chose to pair their purchase with a phone case emblazoned with a photo of Ms. Raimondo's face. In the Chinese tech hub of Shenzhen on Tuesday, Huawei again made a bid for the spotlight with the announcement of a new device just hours after Apple introduced its iPhone 16 in California. Huawei's latest phone, the Mate XT, is heavy on novelty: It can be folded, twice [non-paywalled source].

The tablet-size device folds along two vertical seams to become the size of a typical phone. It is the first commercially available trifold smartphone. It comes in two colors, red and black, and will go on sale on Sept. 20. "It's a piece of work that everyone has thought of but never managed to create," said Richard Yu, Huawei's consumer group chairman. "I have always had a dream to put our tablet in my pocket, and we did it." The Mate XT, with a screen that measures 10.2 inches diagonally, is equipped with artificial intelligence-enabled translation, messaging and photo editing features. Mr. Yu also unveiled a thin keyboard that folds in half to the same size as the phone. He showed the audience how he carried both together in the pocket of his suit jacket. Starting at $2,800, the Mate XT is priced like a luxury product.

Malaysia's telecom regulator has abandoned a plan to block overseas DNS services a day after announcing it, following a sharp backlash and accusations of government overreach. From a report: Last Friday, the Malaysian Communications and Multimedia Commission (MCMC) published an FAQ that stated it had instructed all ISPs to redirect traffic headed for offshore DNS servers to services operated by Malaysian ISPs -- a move it claimed would prevent access to malicious and harmful websites such as those concerning gambling, pornography, copyright infringement or scams. "No, the DNS redirection will not affect your connection speed or browsing experience for legitimate websites," the Commission promised in its FAQ.

But opposition to the plan quickly emerged, on grounds that it could amount to censorship and therefore represented government overreach. Musician turned state legislator Syed Ahmad Syed Abdul Rahman Alhadad labelled the decision "draconian" and a negative for Malaysia's digital economy. Fellow state assemblyperson Lim Yi Wei described the policy as "ill-advised," censorship, inefficient, and unsecure -- as well as counterproductive to government efforts to develop tech startups, innovation and datacenters.

An anonymous reader shares a report: Russia's communications watchdog Roskomnadzor plans to spend 59 billion rubles ($644 million) over the next five years to upgrade its internet traffic-filtering capabilities, the Russian edition of Forbes reported on Tuesday. The money will be used to upgrade hardware used to filter internet traffic, as well as block or slow down certain resources, Forbes reported, citing documents.

Russia passed a law in 2019 to enable the country to cut itself off entirely from the internet, in what it calls a campaign to maintain its digital sovereignty. Following the full-scale invasion of Ukraine, the Kremlin forced out several foreign social media and internet companies, although many services remain accessible via virtual private networks, or VPNs. The system upgrades will allow Russian authorities to better restrict access to VPNs, according to the document. New equipment has been purchased yearly since 2020 as traffic volumes grow, Roskomnadzor's press service said, according to Forbes.

Microsoft today announced significant strides in its Azure Quantum Cloud service, including the demonstration of logical operations using the largest number of error-corrected qubits ever achieved. This progress brings the industry closer to building reliable quantum computers capable of solving complex problems beyond the reach of classical systems, the company said.

In a significant partnership, Microsoft is collaborating with Atom Computing to integrate their neutral-atom hardware into Azure Quantum. Atom Computing has already shown promise with hardware exceeding 1,000 qubits. Key to Microsoft's advancements is the implementation of the "tesseract code" error correction scheme on Quantinuum's trapped-ion quantum hardware. This led to a 22-fold reduction in error rates, a critical step towards reliable quantum computations. Microsoft is also committed to simplifying quantum programming. Azure's Q# language will now automatically handle complex error correction, making quantum development more accessible.

Sony has officially revealed the long-rumored mid-generation upgrade model for the PlayStation 5, the PlayStation 5 Pro. Set for release on November 7 at a price point of $699.99, the upgraded model, styled like the "slim" PS5 but with a triple groove design, will be available only in an all-digital version compatible with Sony's existing add-on optical drive. The console boasts a larger GPU and faster memory, delivering 45% faster rendering than the base PS5. It also features advanced ray tracing at double or triple the speed and an AI-driven upscaler for improved resolution and clarity.

Several games, including "The Last of Us Part 2 Remastered" and "Horizon Forbidden West," will receive enhanced versions for the PS5 Pro. A new Game Boost feature aims to improve performance across the entire PS5 and backward-compatible PS4 libraries.

A robot entered a damaged reactor at Japan's Fukushima nuclear power plant on Tuesday, beginning a two-week mission to retrieve melted fuel debris for the first time since the 2011 disaster. The operation marks a crucial step in the decades-long process to decommission the plant and address the highly radioactive material inside three damaged reactors.

The robot, maneuvered remotely due to lethal radiation levels, will collect less than 3 grams of debris using tongs. This sample will provide vital data on the status of the reactor cores and inform future cleanup strategies. An estimated 880 tons of molten fuel remains in the three reactors, posing potential safety risks as the structures age. AP adds: Removal of the melted fuel was initially planned to start in late 2021 but has been delayed by technical issues, underscoring the difficulty of the process. The government says decommissioning is expected to take 30-40 years, while some experts say it could take as long as 100 years.

Others are pushing for an entombment of the plant, as at Chernobyl after its 1986 explosion, to reduce radiation levels and risks for plant workers. That won't work at the seaside Fukushima plant, says Lake Barrett, who led the cleanup after the 1979 disaster at the U.S. "You're in a high seismic area, you're in a high-water area, and there are a lot of unknowns in those (reactor) buildings,â he said. "I don't think you can just entomb it and wait."

Bruce66423 shares a report: The European Union's top court ruled against Apple Tuesday in the tech company's protracted legal battle over contested back taxes in Ireland. The ruling means Apple will be forced to pay Ireland up to $14.4 billion in back taxes and represents the latest setback in Europe for the tech giant. Earlier this year, Apple became the first company to be accused of violating the EU's new major tech competition law. The tax case stretches back to 2016, when the European Commission (EC) ordered Apple repay Ireland roughly $14.4 billion of unpaid taxes.

The commission argued that the tech giant had received "illegal" tax benefits from Ireland over the course of two decades. Apple had housed its European headquarters in Ireland and paid a corporate tax rate of less than 1% in some years, which the EC argued gave Apple an unfair advantage over other companies. Apple and Ireland appealed the decision in 2019. The European Court of Justice on Tuesday overturned the lower court decision and upheld the EC's 2016 order. "Today is a big win for European citizens and for tax justice. The Court of Justice confirms ... that Ireland granted Apple unlawful aid which Ireland now has to recover," Margrethe Vestager, the EU competition chief, said in a statement Tuesday.

Oracle missed the tech industry's move to cloud computing last decade and ended up an also-ran. Now the AI boom has given it another shot. WSJ: The 47-year-old company that made its name on relational database software has emerged as an attractive cloud-computing provider for AI developers such as OpenAI, sending its long-stagnant stock to new heights. Oracle shares are up 34% since January, well outpacing the Nasdaq's 14% rise and those of bigger competitors Microsoft, Amazon.com and Google.

It is a surprising revitalization for a company many in the tech industry had dismissed as a dinosaur of a bygone, precloud era. Oracle appears to be successfully making a case to investors that it has become a strong fourth-place player in a cloud market surging thanks to AI. Its lateness to the game may have played to its advantage, as a number of its 162 data centers were built in recent years and are designed for the development of AI models, known as training.

In addition, Oracle isn't developing its own large AI models that compete with potential clients. The company is considered such a neutral and unthreatening player that it now has partnerships with Microsoft, Google and Amazon, all of which let Oracle's databases run in their clouds. Microsoft is also running its Bing AI chatbot on Oracle's servers.

Sea ice surrounding Antarctica is on the cusp of reaching a record winter low for a second year running, continuing an "outrageous" fall in the amount of Southern Ocean that is freezing over. From a report: The Antarctic region underwent an abrupt transformation in 2023 as the sea ice cover surrounding the continent crashed for six months straight. In winter, it covered about 1.6m sq km less than the long-term average -- an area roughly the size of Britain, France, Germany and Spain combined. Scientists at the Australian Antarctic Program Partnership said the latest data showed this had been repeated in 2024. On 7 September the amount of frozen ocean was less than on the same date last year. While the winter record is not yet complete, and it is therefore not clear if the extent of sea ice for the season will be less than last year, the scientists said it was part of a body of evidence that the Antarctic system had moved to a "new state."

"What we're really talking about are two incredible extreme events," said Dr Will Hobbs, a sea ice researcher at the University of Tasmania. "Last year was outrageous and it's happened again." Hobbs said at monthly and yearly timescales the atmosphere was the main driver of regional variability. "What's different now is that warmer Southern Ocean temperatures are really having an impact on the sea ice," he said. "We know that the past two years have been the warmest on record for the planet, with global temperatures more than 1.5C above pre-industrial for extended periods. This global warmth is now reflected in the oceans around the Antarctic." On Saturday, Southern Ocean sea ice covered 17m sq km, less than the previous low of 17.1m sq km last year. The long-term average for 7 September based on satellite data is 18.4m sq km.