Dan Robinson reports via The Register: Adding caffeine can enhance the efficiency of fuel cells, reducing the need for platinum in electrodes and significantly reducing the cost of making them, according to researchers in Japan. [...] The study, published in the journal Communications Chemistry, concerns the catalysis process at the cathode of a fuel cell and making this reaction more efficient. Fuel cells work somewhat like batteries. They generate power by converting the chemical energy of a fuel (or electrolyte) and an oxidizing agent into electricity. This is typically hydrogen as a fuel and oxygen as an oxidizer. Unlike batteries with limited lifespans, fuel cells can generate power as long as fuel is supplied. The hydrogen undergoes oxidation at the anode, producing hydrogen ions and electrons. The ions move through the hydrogen electrolyte to the cathode, while the electrons flow through an external circuit, generating electricity. At the cathode, oxygen combines with the hydrogen ions and electrons, resulting in water as a by-product. However, this water impacts the performance of the fuel cell, reacting with the platinum (Pt) to form a layer of platinum hydroxide (PtOH) on the electrode and interfering with the catalysis of the oxygen reduction reaction (ORR), according to the researchers.

To maintain efficient operation, fuel cells require a high Pt loading (greater platinum content), which significantly ups the costs of fuel cells. A quick look online found market prices for platinum of $29.98 per gram, or $932.61 per ounce, at the time of writing. The researchers found that adding caffeine can improve the ORR activity of platinum electrodes 11 fold, making the reaction more efficient. If you are wondering (as we were) how they came to be experimenting with this, the paper explains that modifying electrodes with hydrophobic material is known to be an effective method for enhancing ORR. Caffeine is less toxic than other hydrophobic substances, and it activates the hydrogen evolution and oxidation reactions of Pt nanoparticles and caffeine doped carbons. Got that?

Chiba University's work was led by Professor Nagahiro Hoshi at the Department of Applied Chemistry and Biotechnology. He explained that the researchers found a notable improvement in the electrode's ORR activity with an increase in caffeine concentration in the electrolyte. This forms a thin layer on the electrode's surface, effectively preventing the formation of PtOH, but the effect depends on the orientation of the platinum atoms on the electrode's surface. The paper refers to these as Pt(100), Pt(110) and Pt(111), with the latter two showing increased ORR activity, while there was no noticeable effect with Pt(100). The researchers do not explain if this latter effect might be a problem, but instead claim that their discovery has the potential to improve the designs of fuel cells and lead to more widespread adoption.

Damage to at least three subsea cables off the west coast of Africa is disrupting internet services across the continent. From a report: The West Africa Cable System, MainOne and ACE sea cables -- arteries for telecommunications data -- were all affected on Thursday, triggering outages and connectivity issues for mobile operators and internet service providers, according to data from internet analysis firms including NetBlocks, Kentik and Cloudflare. The cause of the cable faults has not yet been determined.

Data show a major disruption to connectivity in eight West African countries, with Ivory Coast, Liberia and Benin being the most affected, NetBlocks, an internet watchdog, said in a post on X. Ghana, Nigeria, and Cameroon are among other countries impacted. Several companies have also reported service disruptions in South Africa. "This is a devastating blow to internet connectivity along the west coast of Africa, which will be operating in a degraded state for weeks to come," said Doug Madory, director of internet analysis firm Kentik. The cable faults off the Ivory Coast come less than a month after three telecommunications cables were severed in the Red Sea, highlighting the vulnerability of critical communications infrastructure.

Jason Rainbow reports via SpaceNews: SpaceX has secured conditional approval to use extremely high-frequency E-band radio waves to improve the capacity of its low Earth orbit Starlink broadband constellation. The Federal Communications Commission said March 8 it is allowing SpaceX to use E-band frequencies between second-generation Starlink satellites and gateways on the ground, alongside already approved spectrum in the Ka and Ku bands. Specifically, SpaceX is now also permitted to communicate between 71 and 76 gigahertz from space to Earth, and 81-86 GHz Earth-to-space, using the up to 7,500 Gen2 satellites SpaceX is allowed to deploy.

SpaceX has plans for 30,000 Gen2 satellites, on top of the 4,400 Gen1 satellites already authorized by the FCC. However, the FCC deferred action in December 2022 on whether to allow SpaceX to deploy the other three-quarters of its Gen2 constellation, which includes spacecraft closer to Earth to improve broadband speeds. The regulator also deferred action at the time on SpaceX's plans to use E-band frequencies, citing a need to first establish ground rules for using them in space. In a March 8 regulatory filing, the FCC said it found "SpaceX's proposed operations in the E-band present no new or increased frequency conflicts with other satellite operations." But the order comes with multiple conditions, including potentially forcing SpaceX to modify operations if another satellite operator also seeks to use the radio waves.

Ubuntu-based Linux Mint includes HexChat software by default "to offer a way for users of the distro to talk to, ask questions, and get support from other users," according to the Linux blog OMG Ubuntu.

But in February HexChat's developer announced its final release... That got devs thinking. As is, IRC isn't user-friendly. It's a kind of an arcane magic involving strange commands. Its onboarding is obtuse. And the protocol doesn't natively support things like media sharing (screenshots are useful when troubleshooting), clickable links, or other modern "niceties". And yet, IRC is a fast, established, open, and versatile protocol... It's free and immediate (no sign-up required to use it) which makes it ideal for 'when you need it' use.

So work has begun on a new dedicated "chat room" app to replace HexChat, called Jargonaut. Linux Mint's goal is not to build a fully-featured IRC client, or even an IRC client at all. Jargonaut is a chat app that just happens to use IRC as its underlying chat protocol. Users won't need to know what IRC is nor learn its syntax, as Jargonaut isn't going to respond to standard IRC commands... When the app is opened Linux Mint's official support channels are there, ready to engage with. A real-time support chat app built on IRC — with additional bells:

"[Jargonaut] will support pastebin/imgur via DND, uploading your system specifications, troubleshooting and many features which have nothing to do with IRC," says Linux Mint lead Clement Lefebvre in the distro's latest monthly update. "HexChat was a great IRC client which helped us make a relatively good support chat room. We're hoping Jargonaut will help us make this chat room even better and much easier to use."
"Like most of Linux Mint's home-grown XApps the new app is hosted on Github," the article points out, "which is where you should go t to check in on Jargonaut's current status, check out the code and compile it, or contribute to its development with your own fair hands."

The article also argues that IRC "isn't as trendy as Discord or Telegram, but it is a free, open standard that no single entity controls, is relatively low-bandwidth, interoperable, and efficient."

The Federal Communications Commission is considering a proposal to bar landlords from charging tenants in bulk for cable, internet, and satellite services, offering them more choice in the kinds of services they need. From a report: The agency is circulating a proposed rule to ban the practice of "bulk billing," the White House announced in a press release ahead of President Joe Biden's meeting with his Competition Council on Tuesday.

It's part of a broader effort to promote policies that will lower costs for Americans, as Biden is trying to appeal to voters focused on the economy as he seeks reelection later this year. That theme of lowering costs will resurface in Biden's State of the Union address on Thursday, National Economic Advisor Lael Brainard told reporters on a call Monday. Bulk billing restricts consumers' choices by limiting the prices and levels of cable and internet service available to them, the White House said in the press release. The new proposal will also target other "exclusive arrangements" between landlords and service providers like exclusive wiring and marketing arrangements or revenue sharing agreements, the White House said.

A group of radio enthusiasts known as the "radio squirrels" are keeping the legacy of Morse code alive at KPH Maritime Radio, the last operational Morse code radio station in North America. Located in Point Reyes National Seashore, north of San Francisco, the station transmits maritime news and weather reports every Saturday, using vintage equipment dating back to World War II, reads a fast-paced story on The Atlantic. Despite the obsolescence of Morse code, the radio squirrels, along with a 17-year-old newcomer, are determined to preserve this unique form of communication.

"NASA said Friday it is shutting down a $2 billion satellite refueling project," reports UPI, "after criticizing the project's contractor for poor performance." The agency in a statement said it will discontinue the On-orbit Servicing, Assembly and Manufacturing 1 project after nearly a decade of work due to "continued technical, cost, and schedule challenges, and a broader community evolution away from refueling unprepared spacecraft, which has led to a lack of a committed partner." [...] The spacecraft would have utilized an attached Space Infrastructure Dexterous Robot (SPIDER) to refuel the Landsat, assemble a communications antenna and demonstrate in-space manufacture of a 32-foot carbon fiber composite beam to verify the capability of constructing large spacecraft structures in orbit... An audit from NASA's Inspector General, however, found OSAM-1 was on track to exceed the projected $2.05 billion budget and would not make its December 2026 launch date, laying the blame on the "poor performance of Maxar."

"NASA and Maxar officials acknowledged that Maxar underestimated the scope and complexity of the work, lacked full understanding of NASA technical requirements, and were deficient in necessary expertise," the report read.

The report also noted Maxar was "no longer profiting from their work on OSAM-1," after which the xproject appeared not "to be a high priority for Maxar in terms of the quality of its staffing."
Thanks to long-time Slashdot reader schwit1 for sharing the news.

Long-time Slashdot reader theodp writes: CACM [Communications of the ACM] Is Now Open Access," proclaims the Association for Computing Machinery (ACM) in its tear-down-this-CACM-paywall announcement. "More than six decades of CACM's renowned research articles, seminal papers, technical reports, commentaries, real-world practice, and news articles are now open to everyone, regardless of whether they are members of ACM or subscribe to the ACM Digital Library."

Ironically, clicking on Google search results for older CACM articles on Aaron Swartz currently returns page-not-found error messages and the CACM's own search can't find Aaron Swarz either, so perhaps there's some work that remains to be done with the transition to CACM's new website. ACM plans to open its entire archive of over 600,000 articles when its five-year transition to full Open Access is complete (January 2026 target date).
"They are right..." the site's editor-in-chief told Slashdot. "We need to get Google to reindex the new site ASAP."

Google is cracking down on rooted Android devices, blocking multiple people from using the RCS message feature in Google Messages. From a report: Users with rooted phones -- a process that unlocks privileged access to the Android operating system, like jailbreaking iPhones -- have made several reports on the Google Messages support page, Reddit, and XDA's web forum over the last few months, finding they're suddenly unable to send or receive RCS messages. One example from Reddit user u/joefuf shows that RCS messages would simply vanish after hitting the send button. Several reports also mention that Google Messages gave no indication that RCS chat was no longer working, and was still showing as connected and working in Google Messages. In a statement sent to the Verge where we asked if Google is blocking rooted devices from using RCS, Google communications manager Ivy Hunt said the company is "ensuring that message-issuing/receiving devices are following the operating measures defined by the RCS standard" in a bid to prevent spam and abuse on Google Messages. In other words, yes, Google is blocking RCS on rooted devices.

Tumblr and Wordpress are preparing to sell user data to Midjourney and OpenAI, 404Media reported Tuesday, citing a source with internal knowledge about the deals and internal documents. From the report: The exact types of data from each platform going to each company are not spelled out in documentation we've reviewed, but internal communications reviewed by 404 Media make clear that deals between Automattic, the platforms' parent company, and OpenAI and Midjourney are imminent. The internal documentation details a messy and controversial process within Tumblr itself. One internal post made by Cyle Gage, a product manager at Tumblr, states that a query made to prepare data for OpenAI and Midjourney compiled a huge number of user posts that it wasn't supposed to. It is not clear from Gage's post whether this data has already been sent to OpenAI and Midjourney, or whether Gage was detailing a process for scrubbing the data before it was to be sent.

The U.S. and several international partners endorsed shared principles for developing 6G wireless communication systems, the White House said Monday. From a report: A battle is underway to influence the standards of 6G amid concerns by Western countries and their allies that authoritarian regimes could gain further control over Internet in their countries. Policies around wireless communications influence economic-growth and national security, fueling the race between the U.S. and China -- which claimed earlier this month that it had launched the world's first satellite "to test 6G architecture," per state media.

The governments of the U.S., Australia, Canada, the Czech Republic, Finland, France, Japan, South Korea, Sweden and the U.K. released a joint statement saying that by working together, "we can support open, free, global, interoperable, reliable, resilient, and secure connectivity." They laid out principles including using systematic approaches to cybersecurity, being protective of privacy and creating technologies that are widely available and accessible to developing nations.

An anonymous reader quotes a report from The Register: A law firm acting on behalf of the Nevada Attorney General Aaron Ford has asked a state court to issue a temporary restraining order (TRO) denying minors access to encrypted communication in Meta's Messenger application. The motion for a TRO follows AG's Ford announcement of civil lawsuits on January 30, 2024 against five social media companies, including Meta [PDF], alleging the companies deceptively marketed their services to young people through algorithms that were designed to promote addiction. Nevada was not a party to the two multi-district lawsuits filed against Meta last October by 42 State Attorney General over claims that the social media company knowingly ignored evidence that its Facebook and Instagram services contribute to the mental harm of children and teens. Meta, which lately has been investing in virtual reality and large language models, is also being sued by hundreds of school districts around the US.

The Nevada court filing to obtain a TRO follows from AG Ford's initial complaint. The legal claim cites a statement from the National Center for Missing and Exploited Children that argues Meta's provision of end-to-end encryption in Messenger "without exceptions for child sexual abuse material placed millions of children in grave danger." The initial complaint's presumably supporting claims, however, have been redacted in the publicly viewable copy of the document. The motion for a TRO, which also contains redactions, contends that Meta -- by encrypting Messenger -- has thwarted state officials from enforcing the Nevada Unfair and Deceptive Trade Practices Act. "With this Motion, the State seeks to enjoin Meta from using end-to-end encryption (also called 'E2EE') on Young Users' Messenger communications within the State of Nevada," the court filing says. "This conduct -- which renders it impossible for anyone other than a private message's sender and recipient to know what information the message contains -- serves as an essential tool of child predators and drastically impedes law enforcement efforts to protect children from heinous online crimes, including human trafficking, predation, and other forms of dangerous exploitation."

Meta enabled E2EE by default for all users of Messenger in December 2023. But according to the motion for a TRO, "Meta's end-to-end-encryption stymies efforts by Nevada law enforcement, causing needless delay and even risking the spoliation of critical pieces of necessary evidence in criminal prosecutions." The injunction, if granted, would require Meta to disable E2EE for all Messenger users under 18 in Nevada. Presumably that would also affect minors using Messenger who are visiting the Silver State.

CNN reports: AT&T is reimbursing customers for the nearly 12-hour network outage on Thursday, the company announced in a news release. The mobile network will issue a $5 credit to "potentially impacted" AT&T Wireless customers, which it says is the "average cost of a full day of service."
The credit will be applied automatically "within 2 bill cycles," according to an announcement at the URL att.com/makeitright. "We recognize the frustration this outage has caused and know we let many of our customers down."

In a much smaller font, they note that the credit "does not apply to AT&T Business, AT&T Prepaid or Cricket.

More from CNN: AT&T had encountered sporadic service interruptions in the days leading up to the outage, including a temporary 911 outage in some parts of the southeast. While regional disruptions to wireless service happen occasionally, prolonged nationwide outages are rare. The Federal Communications Commission confirmed Thursday it was investigating the incident...

Several hours after service was restored, AT&T released an update stating the outage seemed to be the result of an internal issue, not a cybersecurity threat. "Based on our initial review, we believe that today's outage was caused by the application and execution of an incorrect process used as we were expanding our network," the company said.

On Saturday, AT&T reiterated it was taking steps "to prevent this from happening again in the future," but did not elaborate.

An anonymous reader quotes a report from TechCrunch: In a press release written with help from ChatGPT, Match Group announced an enterprise agreement with the AI chatbot's maker, OpenAI. The new agreement includes over 1,000 enterprise licenses for the dating app giant and home to Tinder, Match, OkCupid, Hinge and others. The AI tech will be used to help Match Group employees with work-related tasks, the company says, and come as part of Match's $20 million-plus bet on AI in 2024. [...] As for the news itself, Match Group says it will begin using the AI tech, and specifically ChatGPT-4, to aid with coding, design, analysis, build templates, and other daily tasks, including, as you can tell, communications. To keep its corporate data protected, only trained and licensed Match Group employees will have access to OpenAI's tools, it noted.

Before being able to use these tools, Match Group employees will also have to undergo mandatory training that focuses on responsible use, the technology's capabilities, as well as its limitations. The use will be guided by the company's existing privacy practices and AI principles, too. The company declined to share the cost of the agreement or how it will impact the tech giant's bottom line, but Match believes that the AI tools will make teams more productive. Match execs recently spoke of the company's plans for AI during the company's fourth-quarter earnings, noting that, this year, the app maker will use AI technology to both evolve its existing products and build new ones. The company's Shareholder letter explained how AI could help to improve various aspects of the dating app journey. For instance, it could help with profile creation, where Match is testing features like an AI-powered photo picker, and generative AI for help making bios. The company said that AI will also improve its matching abilities and post-match guidance, in areas like conversation starters, nudges, and offering date ideas.

Three top-tier X-class solar flares launched off the sun between Wednesday and Thursday. The first two occurred seven hours apart, coming in at X1.9 and X1.6 magnitude respectively. The third, the most powerful of the current 11-year "solar cycle," ranked an impressive X6.3. From a report: Solar flares, or bursts of radiation, are ranked on a scale that goes from A, B and C to M and X, in increasing order of intensity. They usually originate from sunspots, or bruiselike discolorations on the surface of the sun. Sunspots are most common near the height of the 11-year solar cycle. The current cycle, number 25, is expected to reach its peak this year. The more sunspots, the more opportunities for solar flares.

Solar flares and accompanying coronal mass ejections, or CMEs, can influence "space weather" across the solar system, and even here on Earth. CMEs are slower shock waves of magnetic energy from the sun. Flares can reach Earth in minutes, but CMEs usually take at least a day. All three of the X-class solar flares disrupted shortwave radio communications on Earth. But the first two flares did not release a CME; the verdict is still out regarding whether the third flare did. High-frequency radio waves propagate by bouncing off electrons in Earth's ionosphere. That's a layer of Earth's atmosphere between 50 and 600 miles above the ground.

When a solar flare occurs, that radiation travels toward Earth at the speed of light. It can ionize additional particles in the lower ionosphere. Radio waves sent from devices below it then impact that extra-ionized layer and lose energy, and aren't able to be bent by ions at the top of the ionosphere. That means signals can't travel very far, and radio blackouts are possible. Three back-to-back radio blackouts occurred in response to the trio of flares, but primarily over the Pacific and Indian oceans. They were rated "R3" or greater on a 1 through 5 scale. According to the National Oceanic and Atmospheric Administration's Space Weather Prediction Center, that results in a "wide area blackout of [high frequency] radio communication, [and] loss of radio contact for about an hour on sunlit side of Earth." Low-frequency navigation signals, like those used on aircraft traveling overseas, can be degraded too.

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.

Princeton professor and technology law researcher Jonathan Mayer has been appointed as the Justice Department's first chief AI officer. The Verge reports: Attorney General Merrick Garland said in a statement that appointing an AI officer was important for the department to "keep pace with rapidly evolving scientific and technological developments." One of Mayer's responsibilities will be to build a team of technical and policy experts around cybersecurity and AI. Mayer will also serve as the department's chief science and technology advisor and help recruit tech talent.

Mayer held technology roles in government before his new Justice Department gig, according to his bio in Princeton's Center for Information Technology Policy. He served as an adviser on technology law and policy to Vice President Kamala Harris when she was still in the Senate. Mayer was also the chief technologist in the enforcement office of the Federal Communications Commission.

An anonymous reader quotes a report from CNN Business: AT&T's network went down for many of its customers across the United States Thursday morning, leaving customers unable to place calls, text or access the internet. By a little after 3 pm ET, roughly 11 hours after reports of the outage first emerged, the company said that it had restored service to all impacted customers. "We have restored wireless service to all our affected customers. We sincerely apologize to them," AT&T said in a statement. The company added that it is "taking steps to ensure our customers do not experience this again in the future."

The Federal Communications Commission confirmed Thursday afternoon that it is investigating the outage. The White House says federal agencies are in touch with AT&T about network outages but that it doesn't have all the answers yet on what exactly led to the interruptions. Although Verizon and T-Mobile customers reported some network outages, too, they appeared far less widespread. T-Mobile and Verizon said their networks were unaffected by AT&T's service outage and customers reporting outages may have been unable to reach customers who use AT&T.

Thursday morning, more than 74,000 AT&T customers reported outages on digital-service tracking site DownDetector, with service disruptions beginning around 4 am ET. That's not a comprehensive number: It tracks only self-reported outages. Reports had been rising steadily throughout the morning but leveled off in the 9 am ET hour. By 12:30 pm ET, the DownDetector data showed some 25,000 AT&T customers still reporting outages. By 2 pm ET, fewer than 5,000 customers were still reporting issues. Earlier Thursday, AT&T acknowledged that it had a widespread outage but did not provide a reason for the system failure. By late morning, AT&T said most of its network was back online, and it confirmed Thursday afternoon that service was fully restored. According to an anonymous industry source, the issue for the outage appears to be related to how cellular services hand off calls from one network to the next, a process known as peering. They said there's no indication that it was the result of a cyberattack or other malicious activity.

The FCC confirmed that it is investigating the incident. "We are aware of the reported wireless outages, and our Public Safety and Homeland Security Bureau is actively investigating," the FCC said in a statement posted on X. "We are in touch with AT&T and public safety authorities, including FirstNet, as well as other providers."

A spacecraft containing pharmaceutical drugs that were grown on orbit has finally returned to Earth today after more than eight months in space. From a report: Varda Space Industries' in-space manufacturing capsule, called Winnebago-1, landed in the Utah desert at around 4:40 p.m. EST. Inside the capsule are crystals of the drug ritonavir, which is used to treat HIV/AIDS. It marks a successful conclusion of Varda's first experimental mission to grow pharmaceuticals on orbit, as well as the first time a commercial company has landed a spacecraft on U.S. soil, ever. The capsule will now be sent back to Varda's facilities in Los Angeles for analysis, and the vials of ritonavir will be shipped to a research company called Improved Pharma for post-flight characterization, Varda said in a statement. The company will also be sharing all the data collected through the mission with the Air Force and NASA, per existing agreements with those agencies.

The first-of-its-kind reentry and landing is also a major win for Rocket Lab, which partnered with Varda on the mission. Rocket Lab hosted Varda's manufacturing capsule inside its Photon satellite bus; through the course of the mission, Photon provided power, communications, attitude control and other essential operations. At the mission's conclusion, the bus executed a series of maneuvers and de-orbit burns that put the miniature drug lab on the proper reentry trajectory. The final engine burn was executed shortly after 4 p.m. EST. Photon burned up in the atmosphere as planned while the capsule, protected by a heat shield and with the aid of a parachute, continued to land.

In a warning issued Wednesday, the FDA said it has not authorized or approved any smartwatch or smart ring to measure blood glucose levels. The use of these devices can lead to inaccurate measurements and errors in managing diabetes that can be life-threatening, the agency said. From a report: These unauthorized devices are different from smartwatch apps that display data from FDA-approved continuous glucose monitoring devices that pierce the skin. The FDA did not name specific brands but said the sellers of these unauthorized smartwatches and smart rings advertise using âoenon-invasive techniquesâ to measure blood glucose without requiring people to prick their fingers or pierce their skin. However, these devices do not directly test blood glucose levels, the agency said, urging consumers to avoid buying them for that purpose.

The agency also advised health care providers to discuss the risk of using unauthorized blood glucose measuring devices with their patients and to help them select an appropriate authorized device for their needs. âoeThe agency is working to ensure that manufacturers, distributors, and sellers do not illegally market unauthorized smartwatches or smart rings that claim to measure blood glucose levels,â the FDA said in the statement. âoeIf your medical care depends on accurate blood glucose measurements, talk to your health care provider about an appropriate FDA-authorized device for your needs." .