Sunlight becomes energy when plants convert four photons of light. But unfortunately, most attempts at synthetic light-absorbing chemicals can only absorb one photon at a time, write two researchers from the University of Melbourne. "In the Polyzos research group at the School of Chemistry, we have developed a new class of photocatalysts that, like plants, can absorb energy from multiple photons." This breakthrough allows us to harness light energy more effectively, driving challenging and energy-demanding chemical reactions.

We have applied this technology to generate carbanions — negatively charged carbon atoms that serve as crucial building blocks in the creation, or synthesis, of carbon- and hydrogen-rich chemicals known as organic chemicals. Carbanions are vital in making drugs, polymers and many other important materials. However, traditional methods to produce carbanions often require lots of energy and dangerous reagents, and generate significant chemical waste, posing environmental and safety challenges... Our new method offers a greener, safer alternative [using visible light and renewable starting materials]...

We've used it to synthesize important drug molecules, including antihistamines, in a single step using simple, cheap and commonly available "commodity chemicals" — amines and alkenes. And importantly, the reaction scales well in commercial-scale continuous flow reactors, highlighting its potential for industrial applications.
"By learning from the subtle mastery of photosynthesis," the researchers write, their group "is forging a new paradigm for chemical manufacturing — one where sunlight powers sustainable and elegant solutions for the molecules that shape our world."

Google aims to release commercial quantum computing applications within five years, challenging Nvidia's prediction of a 20-year timeline. "We're optimistic that within five years we'll see real-world applications that are possible only on quantum computers," founder and lead of Google Quantum AI Hartmut Neven said in a statement. Reuters reports: Real-world applications Google has discussed are related to materials science - applications such as building superior batteries for electric cars - creating new drugs and potentially new energy alternatives. [...] Google has been working on its quantum computing program since 2012 and has designed and built several quantum chips. By using quantum processors, Google said it had managed to solve a computing problem in minutes that would take a classical computer more time than the history of the universe.

Google's quantum computing scientists announced another step on the path to real world applications within five years on Wednesday. In a paper published in the scientific journal Nature, the scientists said they had discovered a new approach to quantum simulation, which is a step on the path to achieving Google's objective.

An anonymous reader quotes a report from Ars Technica: A judge has dismissed (PDF) a complaint from a parent and guardian of a girl, now 15, who was sexually assaulted when she was 12 years old after Snapchat recommended that she connect with convicted sex offenders. According to the court filing, the abuse that the girl, C.O., experienced on Snapchat happened soon after she signed up for the app in 2019. Through its "Quick Add" feature, Snapchat "directed her" to connect with "a registered sex offender using the profile name JASONMORGAN5660." After a little more than a week on the app, C.O. was bombarded with inappropriate images and subjected to sextortion and threats before the adult user pressured her to meet up, then raped her. Cops arrested the adult user the next day, resulting in his incarceration, but his Snapchat account remained active for three years despite reports of harassment, the complaint alleged.

Two years later, at 14, C.O. connected with another convicted sex offender on Snapchat, a former police officer who offered to give C.O. a ride to school and then sexually assaulted her. The second offender is also currently incarcerated, the judge's opinion noted. The lawsuit painted a picture of Snapchat's ongoing neglect of minors it knows are being targeted by sexual predators. Prior to C.O.'s attacks, both adult users sent and requested sexually explicit photos, seemingly without the app detecting any child sexual abuse materials exchanged on the platform. C.O. had previously reported other adult accounts sending her photos of male genitals, but Snapchat allegedly "did nothing to block these individuals from sending her inappropriate photographs."

Among other complaints, C.O.'s lawsuit alleged that Snapchat's algorithm for its "Quick Add" feature was the problem. It allegedly recklessly works to detect when adult accounts are seeking to connect with young girls and, by design, sends more young girls their way -- continually directing sexual predators toward vulnerable targets. Snapchat is allegedly aware of these abuses and, therefore, should be held liable for harm caused to C.O., the lawsuit argued. Although C.O.'s case raised difficult questions, Judge Barbara Bellis ultimately agreed with Snapchat that Section 230 of the Communications Decency Act barred all claims and shielded Snap because "the allegations of this case fall squarely within the ambit of the immunity afforded to" platforms publishing third-party content. According to Bellis, C.O.'s family had "clearly alleged" that Snap had failed to design its recommendations systems to block young girls from receiving messages from sexual predators. Specifically, Section 230 immunity shields Snap from liability in this case because Bellis considered the messages exchanged to be third-party content. Snapchat designing its recommendation systems to deliver content is a protected activity, Bellis ruled. Despite a seemingly conflicting ruling in Los Angeles that found that "Section 230 didn't protect Snapchat from liability for allegedly connecting teens with drug dealers," Bellis didn't appear to consider it persuasive. She did, however, critique Section 230's broad application, suggesting courts are limited without legislative changes, despite the morally challenging nature of some cases.

Longtime Slashdot reader FudRucker quotes a report from Study Finds: Researchers from Northwestern University, Boston College, and the Massachusetts Institute of Technology (MIT) have developed a new synaptic transistor that works just like the human brain. This advanced device, capable of both processing and storing information simultaneously, marks a notable shift from traditional machine-learning tasks to performing associative learning -- similar to higher-level human cognition. This study introduces a device that operates effectively at room temperatures, a notable improvement over previous brain-like computing devices that required extremely cold conditions to keep their circuits from overheating. With its fast operation, low energy consumption, and ability to retain information without power, the new transistor is well-suited for real-world applications.

"The brain has a fundamentally different architecture than a digital computer," says study co-author Mark Hersam, the Walter P. Murphy Professor of Materials Science and Engineering at Northwestern's McCormick School of Engineering, in a university release. "In a digital computer, data move back and forth between a microprocessor and memory, which consumes a lot of energy and creates a bottleneck when attempting to perform multiple tasks at the same time. On the other hand, in the brain, memory and information processing are co-located and fully integrated, resulting in orders of magnitude higher energy efficiency. Our synaptic transistor similarly achieves concurrent memory and information processing functionality to more faithfully mimic the brain."

Hersam and his team employed a novel strategy involving moire patterns, a type of geometric design formed when two patterns are overlaid. By stacking two-dimensional materials like bilayer graphene and hexagonal boron nitride and twisting them to form a moire pattern, they could manipulate the electronic properties of the graphene layers. This manipulation allowed for the creation of a synaptic transistor with enhanced neuromorphic functionality at room temperature. The device's testing involved training it to recognize patterns and similarities, a form of associative learning. For instance, if trained to identify a pattern like "000," the transistor could distinguish that "111" is more similar to "000" than "101," demonstrating a higher level of cognitive function. This ability to process complex and imperfect inputs has significant implications for real-world AI applications, such as improving the reliability of self-driving vehicles in challenging conditions. The study has been published in the journal Nature.

An activist group is spreading misinformation to stop solar projects in rural America Activist Group Spreads Misinformation to Stop US Solar Projects An energy company's plans for a solar plant powering 25,000 homes were thwarted after a four-year battle with a nonprofit that teamed with locals to restrict large-scale solar projects, reports NPR. That non-profit's name? "Citizens for Responsible Solar." "Citizens for Responsible Solar" is part of a growing backlash against renewable energy in rural communities across the United States. The group, which was started in 2019 and appears to use strategies honed by other activists in campaigns against the wind industry, has helped local groups fighting solar projects in at least 10 states including Ohio, Kentucky and Pennsylvania, according to its website.

"I think for years, there has been this sense that this is not all coincidence. That local groups are popping up in different places, saying the same things, using the same online campaign materials," says Michael Burger, executive director of the Sabin Center for Climate Change Law at Columbia University. Citizens for Responsible Solar seems to be a well-mobilized "national effort to foment local opposition to renewable energy," Burger adds. "What that reflects is the unfortunate politicization of climate change, the politicization of energy, and, unfortunately, the political nature of the energy transition, which is really just a necessary response to an environmental reality."

Citizens for Responsible Solar was founded in an exurb of Washington, D.C., by a longtime political operative named Susan Ralston who worked in the White House under President George W. Bush and still has deep ties to power players in conservative politics. Ralston tapped conservative insiders to help set up and run Citizens for Responsible Solar.... And when Ralston was launching the group, a consulting firm she owns got hundreds of thousands of dollars from the foundation of a leading GOP donor who is also a major investor in fossil fuel companies. It's unclear what the money to Ralston's firm was used for. Ralston has previously denied that Citizens for Responsible Solar received money from fossil fuel interests....

[H]er group's rhetoric points to a broader agenda of undermining public support for solar. Analysts who follow the industry say Citizens for Responsible Solar stokes opposition to solar projects by spreading misinformation online about health and environmental risks. The group's website says solar requires too much land for "unreliable energy," ignoring data showing power grids can run dependably on lots of renewables. And it claims large solar projects in rural areas wreck the land and contribute to climate change, despite evidence to the contrary.
Local politicians fear the political blowback from challenging misinformation, the article suggests — about both solar and wind projects. The result? "A 2022 report by the Sabin Center at Columbia University found 121 local policies around the country that are aimed at blocking or restricting renewable energy development, a nearly 18% increase from the year before."

Thursday a Forbes senior writer reported: A China-based team at TikTok's parent company, ByteDance, planned to use the TikTok app to monitor the personal location of some specific American citizens, according to materials reviewed by Forbes.

The team behind the monitoring project — ByteDance's Internal Audit and Risk Control department — is led by Beijing-based executive Song Ye, who reports to ByteDance cofounder and CEO Rubo Liang. The team primarily conducts investigations into potential misconduct by current and former ByteDance employees. But in at least two cases, the Internal Audit team also planned to collect TikTok data about the location of a U.S. citizen who had never had an employment relationship with the company, the materials show.

It is unclear from the materials whether data about these Americans was actually collected; however, the plan was for a Beijing-based ByteDance team to obtain location data from U.S. users' devices.
Challenging the article, TikTok responded on Twitter that their service "does not collect precise GPS location information from U.S. users, meaning TikTok could not monitor U.S. users in the way the article suggested." But Forbes' senior writer thinks that's a misleading denial, writing on Twitter that "We never mentioned GPS in the story. In fact, we quoted their spokesperson saying they collect approximate location via IP address. Not using GPS does not mean they could not use that approximate location to monitor certain individuals."

TikTok also acknowledged on Twitter that they do have a team that will "acquire information they need to conduct internal investigations of violations of the company codes of conduct," but says the team follows a specific set of policies and processes "as is standard in companies across our industry." In Forbes' article, TikTok spokesperson Maureen Shanahan said that TikTok collects approximate location information (based on IP addresses) to "among other things, help show relevant content and ads to users, comply with applicable laws, and detect and prevent fraud and inauthentic behavior."

But Forbes' senior writer said in their article that "the material reviewed by Forbes indicates that ByteDance's Internal Audit team was planning to use this location information to surveil individual American citizens, not to target ads or any of these other purposes." The Internal Audit and Risk Control team runs regular audits and investigations of TikTok and ByteDance employees, for infractions like conflicts of interest and misuse of company resources, and also for leaks of confidential information. Internal materials reviewed by Forbes show that senior executives, including TikTok CEO Shou Zi Chew, have ordered the team to investigate individual employees, and that it has investigated employees even after they left the company.
TikTok's response on Twitter? Behavior like that would be a firing ofference. "Any use of internal audit resources as alleged by Forbes would be grounds for immediate dismissal of company personnel."

TikTok also said on Twitter that their service "has never been used to 'target' any members of the U.S. government, activists, public figures or journalists, nor do we serve them a different content experience than other users." The response of Forbes' senior writer? "I'm glad they say TikTok hasn't been used to 'target' some specific groups. I am nonetheless concerned that they planned to use it to monitor specific Americans, which is what we reported.

"Also, for what it's worth, they didn't answer this question when we asked it to them on Wednesday.... Neither TikTok nor ByteDance denied anything we reported, either in the pre-publication process, when we told them what we planned to report and asked for comment, or since then. They have also not requested a story update."

Thanks to Slashdot reader koavf for submitting the story

AmiMoJo writes: The operator of the Fukushima No. 1 nuclear power plant, which suffered core meltdowns in 2011, is considering a new submersion method for removing radioactive fuel debris that would wholly encase a reactor building in a water-filled, tank-like structure, a source close to the company said earlier this month. Conceptual breakthroughs with the method, whose advantages include using water's ability to interrupt radiation and thereby provide a safer working environment, have made it a promising candidate for the cleanup of the defunct nuclear plant, according to the source close to Tokyo Electric Power Company Holdings (Tepco). But with no proven track record in the nuclear field, investigations are ongoing into future technological issues and costs, among other contingencies. The source said it could "require advanced technology to stop water leaking out and become a huge construction project."

Were it to go ahead, the process from building to actual debris removal would be lengthy and would likely affect total decommissioning costs, currently pegged at about $57.45 billion. In the aftermath of the March 2011 Great East Japan Earthquake and tsunami, nuclear fuel cooling processes failed at the Fukushima plant's reactors 1 through 3, causing the fuel to melt and re-solidify into radioactive debris mixed with concrete, metal and other materials present in the reactors. Debris removal is the operator's most challenging issue in the Fukushima plant cleanup. Some 880 tons of the radioactive waste material is estimated to have been created by the nuclear meltdown across the three reactors. The new submersion method, which is currently expected to be applied to the No. 3 reactor, would involve building a strong, pressure-resistant structure, much like a ship's hull or a plane's body, completely encapsulating the reactor, including underground. The structure could then be filled with water, and removal work would take place from the top.

Did Mars ever support life? One clue might be quantifying just how much ice (and other minerals) are lurking just below the planet's surface, a team of researchers argued this month. "If life exists on Mars, that is where it would be," they said in a news release this week. "There is no liquid water on the surface," but in a contrary scenario, "subsurface life would be protected from radiation."

Locating ice and minerals has another benefit too, they write in the journal Geophysical Research Letters: to "prepare for human exploration." And fortunately, there's a tool on the InSight lander (which touched down in 2018) that can help estimate the velocity of seismic waves inside the geological crust of Mars — velocities which change depending on which rock types are present, and which materials are filling pores within rocks (which could be ice, water, gas, or other mineral cements).

That's the good news. But after running computer models of applied rock physics thousands and thousands of times, the researchers believe it's unlikely that there's any layers saturated with water (or ice) in the top 300 meters (1,000 feet) of the crust of Mars. "Model results confirm that the upper 300 meters of Mars beneath InSight is most likely composed of sediments and fractured basalts."

The researchers reached a discouraging conclusion, reports Space.com "The chances of finding Martian life appear poor at in the vicinity of NASA's InSight lander." The subsurface around the landing zone — an equatorial site chosen especially for its flat terrain and good marsquake potential — appears loose and porous, with few ice grains in between gaps in the crust, researchers said.... The equatorial region where InSight is working, in theory, should be able to host subsurface water, as conditions are cold enough even there for water to freeze. But the new finding is challenging scientists' assumptions about possible ice or liquid water beneath the subsurface near InSight, whose job is to probe beneath the surface.

While images from the surface have suggested there might be sedimentary rock and lava flows beneath InSight, researchers' models have uncertainties about porosity and mineral content. InSight is helping to fill in some of those gaps, and its new data suggests that "uncemented material" largely fills in the region blow the lander. That suggests little water is present, although more data needs to be collected.

It's unclear how representative the InSight data is of the Martian subsurface in general, but more information may come courtesy of future missions. NASA is considering a Mars Life Explorer that would drill 6 feet (2 meters) below the surface to search for possible habitable conditions. Additionally, a proposed Mars Ice Mapper Mission could search for possible water reservoirs for human missions.
And of course, as the researchers point out in their announcement, "big ice sheets and frozen ground ice remain at the Martian poles."

Humble Bee Bio is on a mission to create a biodegradable alternative to plastics by synthesizing the biology of bees. TechCrunch reports: While the New Zealand-based company is still at an early stage -- it's about halfway through its proof of concept -- if Humble Bee is successful, its bioplastics are likely to make it into the sustainable textiles industry. Humble Bee, which just raised $3.2 million (NZD $5 million) in convertible notes as part of its Series A, has been studying the Australian masked bee, a type of solitary bee that doesn't make honey, but does make a nesting material for laying larvae in, which has many plastic-like properties. "It's resistant to acids and bases. It's hydrophobic, it's waterproof, it's flame retardant, it's stable up to 240 degrees Celsius," Ryan Graves, Humble Bee's chief technology officer, told TechCrunch. "The idea is, how do we recreate this?"

The team is using a synthetic biology approach that involves going into the bee's genetic code and identifying the genes and proteins responsible for the nesting material. Humble Bee has extracted the code and is trying to recreate it in the laboratory. Next, the company will attempt to synthesize plastic-like materials, focusing on four different types of biomaterials that can be turned into fibers and finishing for fabrics. Humble Bee is aiming for anywhere from March to June 2023 to prove out the concept, at which point the team hopes to scale production using industrial-scale fermentation. "There's a degree of exploration still to go on," said Graves, "The processes are time-intensive and they are challenging. Getting going from code to protein is usually a 12-month process, and then we need to scale it up to get hundreds of grams of the stuff out."

Dr. Craig Hunter is a mechanical/aerospace engineer with over 25 years of experience in software development. And now Dixie_Flatline (Slashdot reader #5,077) describes Hunter's latest experiment: Craig Hunter has been running Computational Fluid Dynamics (CFD) benchmarks on Macs for years--he has results going back to 2010 with an Intel Xeon 5650, with the most recent being a 28-core Xeon W from 2019. He has this to say about why he thinks CFD benchmarks are a good test: "As shown above, we see a pretty typical trend where machines get less and less efficient as more and more cores join the computation. This happens because the computational work begins to saturate communications on the system as data and MPI instructions pass between the cores and memory, creating overhead. It's what makes parallel CFD computations such a great real world benchmark. Unlike simpler benchmarks that tend to make CPUs look good, the CFD benchmark stresses the entire system and shows us how things hold up as conditions become more and more challenging."

With just 6 cores, the Mac Studio's M1 Ultra surpasses the 2019 Xeon before literally going off the original chart. He had to double the x-axis just to fit the M1's performance in. Unsurprisingly, he seems impressed:

"We know from Apple's specs and marketing materials that the M1 Ultra has an extremely high 800 GB/sec memory bandwidth and an even faster 2.5 TB/sec interface between the two M1 Max chips that make up the M1 Ultra, and it shows in the CFD benchmark. This leads to a level of CPU performance scaling that I don't even see on supercomputers."

An anonymous reader quotes a report from Phys.Org: A team of researchers from the University of Massachusetts Amherst recently announced in the Proceedings of the National Academy of Sciences that they had engineered a new rubber-like solid substance that has surprising qualities. It can absorb and release very large quantities of energy. And it is programmable. Taken together, this new material holds great promise for a very wide array of applications, from enabling robots to have more power without using additional energy, to new helmets and protective materials that can dissipate energy much more quickly.

"Imagine a rubber band," says Alfred Crosby, professor of polymer science and engineering at UMass Amherst and the paper's senior author. "You pull it back, and when you let it go, it flies across the room. Now imagine a super rubber band. When you stretch it past a certain point, you activate extra energy stored in the material. When you let this rubber band go, it flies for a mile." This hypothetical rubber band is made out of a new metamaterial -- a substance engineered to have a property not found in naturally occurring materials -- that combines an elastic, rubber-like substance with tiny magnets embedded in it. This new "elasto-magnetic" material takes advantage of a physical property known as a phase shift to greatly amplify the amount of energy the material can release or absorb.

A phase shift occurs when a material moves from one state to another: think of water turning into steam or liquid concrete hardening into a sidewalk. Whenever a material shifts its phase, energy is either released or absorbed. And phase shifts aren't just limited to changes between liquid, solid and gaseous states -- a shift can occur from one solid phase to another. A phase shift that releases energy can be harnessed as a power source, but getting enough energy has always been the difficult part. "To amplify energy release or absorption, you have to engineer a new structure at the molecular or even atomic level," says Crosby. However, this is challenging to do and even more difficult to do in a predictable way. But by using metamaterials, Crosby says that "we have overcome these challenges, and have not only made new materials, but also developed the design algorithms that allow these materials to be programmed with specific responses, making them predictable."

In an open letter to Mark Zuckerberg published Monday, a group of academics called for Meta to be more transparent about its research into how Facebook, Instagram, and WhatsApp affect the mental health of children and adolescents. The Verge reports: The letter calls for the company to allow independent reviews of its internal work, contribute data to external research projects, and set up an independent scientific oversight group. "You and your organizations have an ethical and moral obligation to align your internal research on children and adolescents with established standards for evidence in mental health science," the letter, signed by researchers from universities around the world, reads.

The open letter comes after leaks from Facebook revealed some data from the company's internal research, which found that Instagram was linked with anxiety and body image issues for some teenage girls. The research released, though, is limited and relied on subjective information collected through interviews. While this strategy can produce useful insights, it can't prove that social media caused any of the mental health outcomes. The information available so far appears to show that the studies Facebook researchers conducted don't meet the standards academic researchers use to conduct trials, the new open letter said. The information available also isn't complete, the authors noted -- Meta hasn't made its research methods or data public, so it can't be scrutinized by independent experts. The authors called for the company to allow independent review of past and future research, which would include releasing research materials and data.

The letter also asked Meta to contribute its data to ongoing independent research efforts on the mental health of adolescents. It's a longstanding frustration that big tech companies don't release data, which makes it challenging for external researchers to scrutinize and understand their products. "It will be impossible to identify and promote mental health in the 21st century if we cannot study how young people are interacting online," the authors said. [...] The open letter also called on Meta to establish an independent scientific trust to evaluate any risks to mental health from the use of platforms like Facebook and Instagram and to help implement "truly evidence-based solutions for online risks on a world-wide scale." The trust could be similar to the existing Facebook Oversight Board, which helps the company with content moderation decisions.

In the war against misinformation and social media-inspired violence, ultimately the social media platforms are just one front. But what about the people consuming misinformation? In June America's National Security Council unveiled a "National Strategy for Countering Domestic Terrorism," which argued that "pursuing the goal of preventing, disrupting, and deterring acts of domestic terrorism... can mean, broader still, cultivating the type of digital literacy that can empower the American public to resist those who would use online communications platforms and other venues to recruit, radicalize, and mobilize to violence."

This week America's Department of Homeland Security warned the country still faces "a diverse and challenging threat environment" including the possibility of violence "by individuals and small groups...including domestic violent extremists and those inspired or motivated by foreign terrorists and other malign foreign influences.....These actors continue to exploit online forums to influence and spread violent extremist narratives and promote violent activity." (Though they add that the agency "is not aware of an imminent and credible threat to a specific location...")

But besides offering links to mental health resources and info on law enforcement tip lines, the agency also suggests Americans "Maintain digital media literacy to recognize and build resilience to false and harmful narratives" — linking to an online publication about "Media Literacy and Critical Thinking Online."

Here's our look at the documents they're making available — and the language that they're using to convey the threat.

"Are You Ready for Sentient Disney Robots?" asks a headline at the New York Times. (Alternate URL here for a text-only version.)

"A new trend that is coming into our animatronics is a level of intelligence," a senior Imagineering executive tells the Times, showing off Disney's sophisticated new three-foot animatronic of the Guardians of the Galaxy character Groot. "This guy represents our future. It's part of how we stay relevant."

The animatronic Groot walked across the room to introduce himself to the Times' reporter. When I remained silent, his demeanor changed. His shoulders slumped, and he seemed to look at me with puppy dog eyes. "Don't be sad," I blurted out. He grinned and broke into a little dance before balancing on one foot with outstretched arms.
It's just part of a larger initiative to upgrade the park's tech in a variety of different ways: There are animatronics at Disney World that have been doing the same herky-jerky thing on loop since Richard Nixon was president. In the meantime, the world's children have become technophiles, raised on apps (three million in the Google store), the Roblox online gaming universe and augmented reality Snapchat filters... In early June, Disney's animatronic technology took a sonic leap forward. The Disneyland Resort's newest ride, WEB Slingers: A Spider-Man Adventure, features a "stuntronic" robot (outfitted in Spidey spandex) that performs elaborate aerial tricks, just like a stunt person. A catapult hurls the untethered machine 65 feet into the air, where it completes various feats (somersaults in one pass, an "epic flail" in another) while autonomously adjusting its trajectory to land in a hidden net... The Spider-Man robot — 95 pounds of microprocessors, 3-D printed plastic, gyroscopes, accelerometers, aluminum and other materials — took more than three years to develop. Disney declined to discuss the cost of the stuntronics endeavor, but the company easily invested millions of dollars...

One of Disney's senior roboticists, Scott LaValley, came from Boston Dynamics, where he contributed to an early version of Atlas, a running and jumping machine that inspires "how did they do that" amazement — followed by dystopian dread. Disney said it had no plans to replace human performers... Rather, Disney's newest robotics initiative is about extreme Marvel and "Star Wars" characters — huge ones like the Incredible Hulk, tiny ones like Baby Yoda and swinging ones like Spider-Man — that are challenging to bring to life in a realistic way, especially outdoors.... The development of Groot — code-named Project Kiwi — is the latest example. He is a prototype for a small-scale, free-roaming robotic actor that can take on the role of any similarly sized Disney character....

Cameras and sensors will give these robots the ability to make on-the-fly choices about what to do and say. Custom software allows animators and engineers to design behaviors (happy, sad, sneaky) and convey emotion.

International investigation finds 23 Apple devices that were successfully hacked. From a report: The text delivered last month to the iPhone 11 of Claude Mangin, the French wife of a political activist jailed in Morocco, made no sound. It produced no image. It offered no warning of any kind as an iMessage from somebody she didn't know delivered malware directly onto her phone -- and past Apple's security systems. Once inside, the spyware, produced by Israel's NSO Group and licensed to one of its government clients, went to work, according to a forensic examination of her device by Amnesty International's Security Lab. It found that between October and June, her phone was hacked multiple times with Pegasus, NSO's signature surveillance tool, during a time when she was in France. The examination was unable to reveal what was collected. But the potential was vast: Pegasus can collect emails, call records, social media posts, user passwords, contact lists, pictures, videos, sound recordings and browsing histories, according to security researchers and NSO marketing materials.

The spyware can activate cameras or microphones to capture fresh images and recordings. It can listen to calls and voice mails. It can collect location logs of where a user has been and also determine where that user is now, along with data indicating whether the person is stationary or, if moving, in which direction. And all of this can happen without a user even touching her phone or knowing she has received a mysterious message from an unfamiliar person -- in Mangin's case, a Gmail user going by the name "linakeller2203." These kinds of "zero-click" attacks, as they are called within the surveillance industry, can work on even the newest generations of iPhones, after years of effort in which Apple attempted to close the door against unauthorized surveillance -- and built marketing campaigns on assertions that it offers better privacy and security than rivals.

[...] Researchers have documented iPhone infections with Pegasus dozens of times in recent years, challenging Apple's reputation for superior security when compared with its leading rivals, which run Android operating systems by Google. The months-long investigation by The Post and its partners found more evidence to fuel that debate. Amnesty's Security Lab examined 67 smartphones whose numbers were on the Forbidden Stories list and found forensic evidence of Pegasus infections or attempts at infections in 37. Of those, 34 were iPhones -- 23 that showed signs of a successful Pegasus infection and 11 that showed signs of attempted infection.

Carnegie's Robert Hazen and Shaunna Morrison teamed up with CU Boulder philosophy of science professor Carol Cleland to propose that scientists adopt a new "evolutionary system" of mineral classification -- one that includes historical data and reflects changes in the diversity and distribution of minerals through more than 4 billion years of Earth's history. Their work is published by the Proceedings of the National Academy of Sciences. Phys.Org reports: The IMA classification system for minerals dates to the 19th century when geologist James Dwight Dana outlined a way to categorize minerals on the basis of unique combinations of idealized compositions of major elements and geometrically idealized crystal structure. "For example, the IMA defines quartz as pure silicon dioxide, but the existence of this idealized version is completely fictional," said Morrison. "Every specimen of quartz contains imperfections -- traces of its formation process that makes it unique." This approach to the categorization system means minerals with distinctly different historical origins are lumped together [...] while other minerals that share a common causal history are split apart.

"The IMA system is typical," said lead author Cleland, explaining that most classification systems in the natural sciences, such as the periodic table of the elements, are time independent, categorizing material things "solely on the basis of manifest similarities and differences, regardless of how they were produced or what modifications they have undergone." For many researchers, a time-independent system is completely appropriate. But this approach doesn't work well for planetary and other historically oriented geosciences, where the emphasis is on understanding the formation and development of planetary bodies. Differences in a diamond or quartz crystal's formative history are critical, Cleland said, because the conditions under which a sample was formed and the modifications it has undergone "are far more informative than the mere fact that a crystal qualifies as diamond or quartz." She, Hazen, and Morrison argue that what planetary scientists need is a new system of categorizing minerals that includes historical "natural kinds."

Because a universal theory of "mineral evolution" does not exist, creating such a classification system for the geosciences is challenging. Hazen, Morrison, and Cleland's proposed solution is what they call a "bootstrap" approach based on historically revelatory, information-rich chemical, physical, and biological attributes of solid materials. This strategy allows scientists to build a historical system of mineral kinds while remaining agnostic about its underlying theoretical principles.

An anonymous reader quotes a report from IEEE Spectrum: When technologists talk about the "Internet of Things" (IoT), they often gloss over the fact that all these interconnected things need batteries and electronics to carry out the job of collecting and processing data while they're communicating to one another. This job is made even more challenging when you consider that many of the objects we would like to connect are made from plastic and do not have electronics embedded into them. Now researchers at the University of Washington have devised a way of using 3D printed plastic to create objects that communicate with smartphone or other Wi-Fi devices without the need for batteries or electronics.

This research builds on previous work at the University of Washington dating back to 2014 in which another research team employed battery-less chips that transmit their bits by either reflecting or not reflecting a Wi-Fi router's signals. With this kind of backscattering, a device communicates by modulating its reflection of the Wi-Fi signal in the space. [...] In this latest research, the University of Washington team has been able to leverage this Wi-Fi backscatter technology to 3D geometry and create easy to print wireless devices using commodity 3D printers. To achieve this, the researchers have built non-electronic and printable analogues for each of these electronic components using plastic filaments and integrated them into a single computational design. The researchers are making their CAD models available to 3D printing enthusiasts so that they can create their own IoT objects. The designs include a battery-free slider that controls music volume, a button that automatically orders more cornflakes from an e-commerce website and a water sensor that sends an alarm to your phone when it detects a leak. The researchers "have leveraged mechanical motion to provide the power for their objects," reports Spectrum. "To ensure that the plastic objects can reflect Wi-Fi signals, the researchers employ composite plastic filament materials with conductive properties. These take the form of plastic with copper and graphene filings."

"Once the reflective material was created, the next challenge for the researchers was to communicate the collected data. The researchers ingeniously translated the 0 and 1 bits of traditional electronics by encoding these bits as 3D printed plastic gears. A 0 and 1 bit are encoded with the presence and absence of tooth on the gear, respectively. These gears reflect the WiFi signal differently depending on whether they are transmitting a 1 bit or a 0 bit."

sciencehabit writes: Recycling isn't as guilt-free as it seems. Only about 30% of the plastic that goes into soda bottles gets turned into new plastic, and it often ends up as a lower strength version. Now, researchers report they've engineered an enzyme that can convert 90% of that same plastic back to its pristine starting materials. Work is underway to scale up the technology and open a demonstration plant next year.

The researchers generated hundreds of mutant enzymes changing amino acids as they went. They then mass produced the mutants in bacteria and screened them to find efficient breakers of plastic bonds. After repeating this process for several rounds, they isolated a mutant enzyme that's 10,000 times more efficient at breaking down an important bond that allows plastic to be recycled.

The team is currently building a demonstration plant that is expected to recycle hundreds of tons of plastic per year. The enzyme can't recycle other major types of plastics, such as polyethylene and polystyrene, which have bonds between building blocks that are harder to break. But if successful, it could make it help society deal with one of the most challenging plastic problems we face.
John McGeehan, who directs the center for enzyme innovation at the University of Portsmouth, also tells Science that now recycling companies typically melt plastics together to make carpets or other low-grade plastic fibers that will eventually end up in a landfill or get incinerated.

"It's not really recycling at all."

NASA engineers want to create a rocket engine powered by nuclear fusion. "A nuclear rocket engine would be twice as efficient as the chemical engines powering rockets today," reports Wired. "But despite their conceptual simplicity, small-scale fission reactors are challenging to build and risky to operate because they produce toxic waste. Space travel is dangerous enough without having to worry about a nuclear meltdown. But for future human missions to the moon and Mars, NASA believes such risks may be necessary." From the report: At the center of NASA's nuclear rocket program is Bill Emrich, the man who literally wrote the book on nuclear propulsion. "You can do chemical propulsion to Mars, but it's really hard," says Emrich. "Going further than the moon is much better with nuclear propulsion." Emrich has been researching nuclear propulsion since the early '90s, but his work has taken on a sense of urgency as the Trump administration pushes NASA to put boots on the moon ASAP in preparation for a journey to Mars. Although you don't need a nuclear engine to get to the moon, it would be an invaluable testing ground for the technology, which will almost certainly be used on any crewed mission to Mars.

Let's get one thing clear: A nuclear engine won't hoist a rocket into orbit. That's too risky; if a rocket with a hot nuclear reactor blew up on the launch pad, you could end up with a Chernobyl-scale disaster. Instead, a regular chemically propelled rocket would hoist a nuclear-powered spacecraft into orbit, which would only then fire up its nuclear reactor. The massive amount of energy produced by these reactors could be used to sustain human outposts on other worlds and cut the travel time to Mars in half. [...] But before a nuclear rocket engine gets its first flight, NASA needs to overhaul its regulations for launching nuclear materials. In August, the White House issued a memo that tasked NASA with developing safety protocols for operating nuclear reactors in space. Once they're adopted by NASA, the stage will be set for the first flight of a nuclear engine as soon as 2024. This coincides with Trump's deadline to return American astronauts to the moon; maybe this time they'll be hitching a ride on a nuclear rocket.

America's lawmakers are scrutinizing the blanket protections in Section 230 of the Communications Decency Act, which lets online companies moderate their own sites without incurring legal liability for everything they host.

schwit1 shared this article from the New York Times: Last month, Senator Ted Cruz, Republican of Texas, said in a hearing about Google and censorship that the law was "a subsidy, a perk" for big tech that may need to be reconsidered. In an April interview, Speaker Nancy Pelosi of California called Section 230 a "gift" to tech companies "that could be removed."

"There is definitely more attention being paid to Section 230 than at any time in its history," said Jeff Kosseff, a cybersecurity law professor at the United States Naval Academy and the author of a book about the law, The Twenty-Six Words That Created the Internet .... Mr. Wyden, now a senator [and a co-author of the original bill], said the law had been written to provide "a sword and a shield" for internet companies. The shield is the liability protection for user content, but the sword was meant to allow companies to keep out "offensive materials." However, he said firms had not done enough to keep "slime" off their sites. In an interview with The New York Times, Mr. Wyden said he had recently told tech workers at a conference on content moderation that if "you don't use the sword, there are going to be people coming for your shield."

There is also a concern that the law's immunity is too sweeping. Websites trading in revenge pornography, hate speech or personal information to harass people online receive the same immunity as sites like Wikipedia. "It gives immunity to people who do not earn it and are not worthy of it," said Danielle Keats Citron, a law professor at Boston University who has written extensively about the statute. The first blow came last year with the signing of a law that creates an exception in Section 230 for websites that knowingly assist, facilitate or support sex trafficking. Critics of the new law said it opened the door to create other exceptions and would ultimately render Section 230 meaningless.
The article notes that while lawmakers from both parties are challenging the protections, "they disagree on why," with Republicans complaining that the law has only protected some free speech while still leaving conservative voices open to censorship on major platforms.

The Times also notes that when Wyden co-authored the original bill in 1996, Google didn't exist yet, and Mark Zuckerberg was 11 years old.