A countrywide study of smartphone users who relocated between US cities found that moving to more walkable environments increased daily walking by 1,100 steps on average. Stanford University researchers analyzed 248,266 days of step data from 5,424 users of the Azumio Argus smartphone app who relocated 7,447 times among 1,609 cities between March 2013 and February 2016. Participants who moved from cities at the 25th percentile of walkability to those at the 75th percentile sustained the increased activity levels for at least three months after relocation.

The additional steps consisted predominantly of moderate-to-vigorous physical activity, with large walkability increases of 49-80 points associated with about one hour per week more of such activity. The study found that 42.5% of participants met national physical activity guidelines for moderate-to-vigorous activity after moving to highly walkable locations, compared to 21.5% before relocation. Computer simulations based on the data suggest that increasing all US cities to the walkability level of Chicago or Philadelphia could result in 36 million more Americans meeting aerobic physical activity guidelines.

Samsung has finally launched a TV featuring the company's new Micro RGB backlight technology. From a report: The 115-inch TV is first launching in South Korea for over $32,000, according to SamMobile, but Samsung says it's coming to the US next, followed by a wider global rollout with more size options.

Samsung's Micro RGB technology is being positioned as an upgrade to Mini LED backlights that employ an array of tiny white or blue LEDs behind a TV's LCD panel. Micro RGB backlights instead use an ultra-fine pattern of individually controlled red, green and blue LEDs that are each less than than 100um in size.

The new backlight is powered by Samsung's Micro RGB AI engine, which the company says "analyzes each frame in real time and automatically optimizes color output for a more lifelike and immersive picture." The technology allows for improved color accuracy and better contrast by precisely controlling the intensity of the individual LEDs, and Samsung says it can even boost the color in dull scenes, making them appear more vivid and immersive.

Young listeners are accelerating audio and video consumption, with an Economist/YouGov poll finding 31% of Americans aged 18-29 using faster-than-1x playback versus 8% among those 45 and older, as Apple, Spotify, newspapers' audio, Netflix, and YouTube expand speed controls, including YouTube's 4x for premium users.

YouTube reports more than 900 years saved per day from fast playback; a meta-analysis led by University of Waterloo researchers finds minimal test-score change up to 1.5x and declines near or past 2x.

Microsoft has made "Pull Print" for Universal Print generally available, letting users authenticate at any registered printer to release queued jobs and reducing the chance that confidential pages sit unattended.

The feature, also called "Universal Print Anywhere," supports two modes: direct print and secure release via QR codes that users scan with a phone camera or the Microsoft 365 app. Admins must register devices, enable secure release, and affix printed QR codes. Microsoft plans badge-based release.

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.

Extreme heat is breaking temperature records across Europe, early measurements suggest, and driving bigger and stronger wildfires. From a report: In south-west France, records were broken on Monday in Angouleme, Bergerac, Bordeaux, Saint-Emilion and Saint-Girons. Meteo France said the "often remarkable, even unprecedented, maximum temperatures" in the region were 12C above the norm for the last few decades.

In Croatia, air temperature records were set in Sibenik, at 39.5C, and Dubrovnik, at 38.9C, while large forest fires raged along its coasts and ripped through neighbouring countries in the Balkans. The day before, Hungary broke its daily maximum temperature record when a weather station in Korosladany hit 39.9C. The capital, Budapest, also broke its daily maximum record as it sweltered through 38.7C heat.

Beyond Europe, dozens of temperature records were broken across Canada, and record-breaking heat above 50C in Iraq was blamed for a nationwide blackout. The heatwave in southern Europe comes as Nordic countries recover from unprecedentedtemperatures above 30C in the Arctic Circle this month.

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.

An anonymous reader quotes a report from the BBC: Experts at the University of Edinburgh carried out a post-mortem brain examination on 25 cats which had symptoms of dementia in life, including confusion, sleep disruption and an increase in vocalization. They found a build-up of amyloid-beta, a toxic protein and one of the defining features of Alzheimer's disease. The discovery has been hailed as a "perfect natural model for Alzheimer's" by scientists who believe it will help them explore new treatments for humans.

Dr Robert McGeachan, study lead from the University of Edinburgh's Royal (Dick) School of Veterinary Studies, said: "Dementia is a devastating disease -- whether it affects humans, cats, or dogs. Our findings highlight the striking similarities between feline dementia and Alzheimer's disease in people. This opens the door to exploring whether promising new treatments for human Alzheimer's disease could also help our ageing pets." [...]

Previously, researchers have studied genetically-modified rodents, although the species does not naturally suffer from dementia. "Because cats naturally develop these brain changes, they may also offer a more accurate model of the disease than traditional laboratory animals, ultimately benefiting both species and their caregivers," Dr McGeachan said. [...] Prof Danielle Gunn-Moore, an expert in feline medicine at the vet school, said the discovery could also help to understand and manage feline dementia. The findings have been published in the European Journal of Neuroscience.

United Launch Alliance's Vulcan Centaur rocket successfully completed its first-ever national security mission, launching the U.S. military's first experimental navigation satellite in 48 years. Space.com reports: The mission saw the company's powerful new Vulcan Centaur rocket take off from Space Launch Complex 41 (SLC-41) at Cape Canaveral Space Force Station in Florida. Vulcan launched with four side-mounted solid rocket boosters in order to generate enough thrust to send its payload directly into geosynchronous orbit on one of ULA's longest flights ever, a seven-hour journey that will span over 22,000 miles (35,000 kilometers), according to ULA.

The payload launching on Tuesday's mission was the U.S. military's first experimental navigation satellite to be launched in 48 years. It is what's known as a position, navigation and timing (PNT) satellite, a type of spacecraft that provides data similar to that of the well-known GPS system. This satellite will be testing many experimental new technologies that are designed to make it resilient to jamming and spoofing, according to Andrew Builta with L3Harris Technologies, the prime contractor for the PNT payload integrated onto a satellite bus built by Northrop Grumman.

The satellite, identified publicly only as Navigation Technology Satellite-3 (NTS-3), features a phased array antenna that allows it to "focus powerful beams to ground forces and combat jamming environments," Builta said in a media roundtable on Monday (Aug. 11). GPS jamming has become an increasingly worrisome problem for both the U.S. military and commercial satellite operators, which is why this spacecraft will be conducting experiments to test how effective these new technologies are at circumventing jamming attacks. In addition, the satellite features a software architecture that allows it to be reprogrammed while in orbit. "This is a truly game-changing capability," Builta said.

An anonymous reader quotes a report from ZDNet: You can't say Linux creator Linus Torvalds didn't give the kernel developers fair warning. He'd told them: "The upcoming merge window for 6.17 is going to be slightly chaotic for me. I have multiple family events this August (a wedding and a big birthday), and with said family being spread not only across the US, but in Finland too, I'm spending about half the month traveling." Therefore, Torvalds continued, "That does not mean I'll be more lenient to late pull requests (probably quite the reverse, since it's just going to add to the potential chaos)." So, when Meta software engineer Palmer Dabbelt pushed through a set of RISC-V patches and admitted "this is very late," he knew he was playing with fire. He just didn't know how badly he'd be burned.

Torvalds fired back on the Linux Kernel Mailing List (LKML): "This is garbage and it came in too late. I asked for early pull requests because I'm traveling, and if you can't follow that rule, at least make the pull requests good." It went downhill from there. Torvalds continued: "This adds various garbage that isn't RISC-V specific to generic header files. And by 'garbage," I really mean it. This is stuff that nobody should ever send me, never mind late in a merge window." Specifically, Torvalds hated the "crazy and pointless" way in which one of the patch's helper functions combined two unsigned 16-bit integers into a 32-bit integer. How bad was it? "That thing makes the world actively a worse place to live. It's useless garbage that makes any user incomprehensible, and actively *WORSE* than not using that stupid 'helper.'"

In addition to the quality issues, Torvalds was annoyed that the offending code was added to generic header files rather than the RISC-V tree. He emphasized that such generic changes could negatively impact the broader Linux community, writing: "You just made things WORSE, and you added that 'helper' to a generic non-RISC-V file where people are apparently supposed to use it to make other code worse too... So no. Things like this need to get bent. It does not go into generic header files, and it damn well does not happen late in the merge window. You're on notice: no more late pull requests, and no more garbage outside the RISC-V tree." [...] Dabbelt gets it. He replied, "OK, sorry. I've been dropping the ball lately, and it kind of piled up, taking a bunch of stuff late, but that just leads to me making mistakes. So I'll stop being late, and hopefully that helps with the quality issues."

Cornell University researchers have developed an "invisible" light-based watermarking system that embeds unique codes into the physical light that illuminates the subject during recording, allowing any camera to capture authentication data without special hardware. By comparing these coded light patterns against recorded footage, analysts can spot deepfake manipulations, offering a more resilient verification method than traditional file-based watermarks. TechSpot reports: Programmable light sources such as computer monitors, studio lighting, or certain LED fixtures can be embedded with coded brightness patterns using software alone. Standard non-programmable lamps can be adapted by fitting them with a compact chip -- roughly the size of a postage stamp -- that subtly fluctuates light intensity according to a secret code. The embedded code consists of tiny variations in lighting frequency and brightness that are imperceptible to the naked eye. Michael explained that these fluctuations are designed based on human visual perception research. Each light's unique code effectively produces a low-resolution, time-stamped record of the scene under slightly different lighting conditions. [Abe Davis, an assistant professor] refers to these as code videos.

"When someone manipulates a video, the manipulated parts start to contradict what we see in these code videos," Davis said. "And if someone tries to generate fake video with AI, the resulting code videos just look like random variations." By comparing the coded patterns against the suspect footage, analysts can detect missing sequences, inserted objects, or altered scenes. For example, content removed from an interview would appear as visual gaps in the recovered code video, while fabricated elements would often show up as solid black areas. The researchers have demonstrated the use of up to three independent lighting codes within the same scene. This layering increases the complexity of the watermark and raises the difficulty for potential forgers, who would have to replicate multiple synchronized code videos that all match the visible footage. The concept is called noise-coded illumination and was presented on August 10 at SIGGRAPH 2025 in Vancouver, British Columbia.

Terraform Labs founder Do Kwon pleaded guilty in U.S. federal court to conspiracy to defraud and wire fraud over the $40 billion collapse of TerraUSD and Luna in 2022. Reuters reports: Kwon, 33, who co-founded Singapore-based Terraform Labs and developed the TerraUSD and Luna currencies, entered the plea at a court hearing in New York before U.S. District Judge Paul Engelmayer. He had pleaded not guilty in January to a nine-count indictment charging him with securities fraud, wire fraud, commodities fraud and money laundering conspiracy.

Accused of misleading investors in 2021 about TerraUSD - a so-called stablecoin designed to maintain a value of $1 - Kwon pleaded guilty to the two counts under an agreement with the Manhattan U.S. Attorney's office, which brought the charges. He faces up to 25 years in prison when Engelmayer sentences him on December 11, though prosecutor Kimberly Ravener said the government had agreed to advocate for a prison term of no more than 12 years provided he accepts responsibility for his crimes. "I made false and misleading statements about why it regained its peg by failing to disclose a trading firm's role in restoring that peg," Kwon said in court. "What I did was wrong."

ole_timer shares a report from the New York Times: Investigators have uncovered evidence that Russia is at least partly responsible for a recent hack of the computer system that manages federal court documents, including highly sensitive records with information that could reveal sources and people charged with national security crimes, according to several people briefed on the breach. It is not clear what entity is responsible, whether an arm of Russian intelligence might be behind the intrusion or if other countries were also involved, which some of the people familiar with the matter described as a yearslong effort to infiltrate the system. Some of the searches included midlevel criminal cases in the New York City area and several other jurisdictions, with some cases involving people with Russian and Eastern European surnames.

Administrators with the court system recently informed Justice Department officials, clerks and chief judges in federal courts that "persistent and sophisticated cyber threat actors have recently compromised sealed records," according to an internal department memo reviewed by The New York Times. The administrators also advised those officials to quickly remove the most sensitive documents from the system. "This remains an URGENT MATTER that requires immediate action," officials wrote, referring to guidance that the Justice Department had issued in early 2021 after the system was first infiltrated. Documents related to criminal activity with an overseas tie, across at least eight district courts, were initially believed to have been targeted. Last month, the chief judges of district courts across the country were quietly warned to move those kinds of cases off the regular document-management system, according to officials briefed on the request. They were initially told not to discuss the matter with other judges in their districts.

An anonymous reader quotes a report from NPR: Boston Public Library, one of the oldest and largest public library systems in the country, is launching a project this summer with OpenAI and Harvard Law School to make its trove of historically significant government documents more accessible to the public. The documents date back to the early 1800s and include oral histories, congressional reports and surveys of different industries and communities. "It really is an incredible repository of primary source materials covering the whole history of the United States as it has been expressed through government publications," said Jessica Chapel, the Boston Public Library's chief of digital and online services. Currently, members of the public who want to access these documents must show up in person. The project will enhance the metadata of each document and will enable users to search and cross-reference entire texts from anywhere in the world. Chapel said Boston Public Library plans to digitize 5,000 documents by the end of the year, and if all goes well, grow the project from there. Because of this historic collection's massive size and fragility, getting to this goal is a daunting process. Every item has to be run through a scanner by hand. It takes about an hour to do 300-400 pages.

Harvard University said it could help. Researchers at the Harvard Law School Library's Institutional Data Initiative are working with libraries, museums and archives on a number of fronts, including training new AI models to help libraries enhance the searchability of their collections. AI companies help fund these efforts, and in return get to train their large language models on high-quality materials that are out of copyright and therefore less likely to lead to lawsuits. "Having information institutions like libraries involved in building a sustainable data ecosystem for AI is critical, because it not just improves the amount of data we have available, it improves the quality of the data and our understanding of what's in it," said Burton Davis, vice president of Microsoft's intellectual property group. [...] OpenAI is helping Boston Public Library cover such costs as scanning and project management. The tech company does not have exclusive rights to the digitized data.

IBM and Google report they will build industrial-scale quantum computers containing one million or more qubits by 2030, following IBM's June publication of a quantum computer blueprint addressing previous design gaps and Google's late-2023 breakthrough in scaling error correction.

Current experimental systems contain fewer than 200 qubits. IBM encountered crosstalk interference when scaling its Condor chip to 433 qubits and subsequently adopted low-density parity-check code requiring 90% fewer qubits than Google's surface code method, though this requires longer connections between distant qubits.

Google plans to reduce component costs tenfold to achieve its $1 billion target price for a full-scale machine. Amazon Web Services quantum hardware executive Oskar Painter told FT he estimates useful quantum computers remain 15-30 years away, citing engineering challenges in scaling despite resolved fundamental physics problems.