New submitter Smonster shares a report from the New York Times: With restrictions on space and weight, what would you bring if you were going to Mars? An ideal option might be a single material that can shift shapes into any object you imagine. In the morning, you could mold that material into utensils for eating. When breakfast is done, you could transform your fork and knife into a spade to tend to your Martian garden. And then when it's happy hour on the red planet, that spade could become a cup for your Martian beer. What sounds like science fiction is, perhaps, one step closer to reality.

Researchers at the University of Chicago Pritzker School of Molecular Engineering have created a new type of plastic with properties that can be set with heat and then locked in with rapid cooling, a process known as tempering. Unlike classic plastics, the material retains this stiffness when returned to room temperature. The findings, published in the journal Science on Thursday, could someday change how astronauts pack for space.

"Rather than taking all the different plastics with you, you take this one plastic with you and then just give it the properties you need as you require," said Stuart Rowan, a chemist at the University of Chicago and an author of the new study. But space isn't the only place the material could be useful. Dr. Rowan's team also sees its potential in other environments where resources are scare -- like at sea or on the battlefield. It could also be used to make soft robots and to improve plastics recycling.

Dan Goodin, reporting for ArsTechnica: ChatGPT is leaking private conversations that include login credentials and other personal details of unrelated users, screenshots submitted by an Ars reader on Monday indicated. Two of the seven screenshots the reader submitted stood out in particular. Both contained multiple pairs of usernames and passwords that appeared to be connected to a support system used by employees of a pharmacy prescription drug portal. An employee using the AI chatbot seemed to be troubleshooting problems they encountered while using the portal.

"THIS is so f-ing insane, horrible, horrible, horrible, i cannot believe how poorly this was built in the first place, and the obstruction that is being put in front of me that prevents it from getting better," the user wrote. "I would fire [redacted name of software] just for this absurdity if it was my choice. This is wrong." Besides the candid language and the credentials, the leaked conversation includes the name of the app the employee is troubleshooting and the store number where the problem occurred. The entire conversation goes well beyond what's shown in the redacted screenshot above. A link Ars reader Chase Whiteside included showed the chat conversation in its entirety. The URL disclosed additional credential pairs. The results appeared Monday morning shortly after reader Whiteside had used ChatGPT for an unrelated query.

Beijing has quietly pulled the proposed curbs on the video game industry from the official website, weeks after the draft guidelines wiped tens of billions of dollars off the market value of local titans. From a report: The link to the draft rules was no longer accessible as of this morning, Haitong Securities reported earlier on Tuesday. Shares of Tencent and NetEase jumped on the news. "This could possibly indicate that there will be further changes in the new measures," wrote Haitong analysts in the note. The move follows Beijing also removing a key official -- the head of the publication bureau of Communist Party's Propaganda Department -- over the handling of the release of the draft rules, which caught investors and gaming giants by surprise.

Japan has become the fifth country in the world to soft-land a spacecraft on the Moon, using precision technology that allowed it to touch down closer to its target landing site than any mission has before. However the spacecraft might have survived on the lunar surface for just a few hours due to power failure. Nature: Telemetry showed that the Smart Lander for Investigating Moon, or SLIM, touched down in its target area near Shioli crater, south of the lunar equator early Saturday morning, four months after lifting off from the Tanegashima Space Centre, off the south coast of Japan. [...] According to [Hitoshi] Kuninaka (VP of Kanegawa-based Japan Aerospace Exploration Agency), SLIM has very likely achieved its primary goal -- to land on the Moon with an unprecedented accuracy of 100 metres, which is a big leap from previous ranges of a few to dozens of kilometres. SLIM carried vision-based navigation technology, which was intended to image the surface as it flew over the Moon, and locate itself quickly by matching the images with onboard maps.

It remains unclear if the car-sized, 200-kilogram spacecraft actually touched down in the planned, two-step manner with its five legs. Unlike previous Moon landers, which used four legs to simultaneously reach a relatively flat area, SLIM was designed to hit a 15-degree slope outside Shioli crater first with one leg at the back, and then tip forward to stabilize on the four front legs. Observers suggest that SLIM might have rolled during its touch-down, preventing its solar cells from facing the Sun. Kuninaka said not enough data were available to establish the probe's posture or orientation. However, if some sunlight is able to reach the solar cells there is a chance that SLIM could come back to life.

"It's the third all-private astronaut mission to the International Space Station," writes NASA — and they're expected to start boarding within the next hour!

Watch it all on the official stream of NASA TV.

More details from Ars Technica: The four-man team lifted off from NASA's Kennedy Space Center in Florida aboard a SpaceX Falcon 9 rocket Thursday, kicking off a 36-hour pursuit of the orbiting research laboratory. Docking is scheduled for Saturday morning. This two-week mission is managed by Houston-based Axiom Space, which is conducting private astronaut missions to the ISS as a stepping stone toward building a fully commercial space station in low-Earth orbit by the end of this decade.

Axiom's third mission, called Ax-3, launched at 4:49 pm EST (21:49 UTC) Thursday. The four astronauts were strapped into their seats inside SpaceX's Dragon Freedom spacecraft atop the Falcon 9 rocket. This is the 12th time SpaceX has launched a human spaceflight mission, and could be the first of five Dragon crew missions this year.
NASA reports that the crew "will spend about two weeks conducting microgravity research, educational outreach, and commercial activities aboard the space station." NASA Administrator Bill Nelson said "During their time aboard the International Space Station, the Ax-3 astronauts will carry out more than 30 scientific experiments that will help advance research in low-Earth orbit. As the first all-European commercial astronaut mission to the space station, the Ax-3 crew is proof that the possibility of space unites us all...."

The Dragon spacecraft will dock autonomously to the forward port of the station's Harmony module as early as 4:19 a.m. [EST] Saturday. Hatches between Dragon and the station are expected to open after 6 a.m. [EST], allowing the Axiom crew to enter the complex for a welcoming ceremony and start their stay aboard the orbiting laboratory.... The Ax-3 astronauts are expected to depart the space station Saturday, February 3, pending weather, for a return to Earth and splashdown at a landing site off the coast of Florida.

An anonymous reader quotes a report from Ars Technica: On Thursday, UK's Government Communications Headquarters (GCHQ) announced the release of previously unseen images and documents related to Colossus, one of the first digital computers. The release marks the 80th anniversary of the code-breaking machines that significantly aided the Allied forces during World War II. While some in the public knew of the computers earlier (PDF), the UK did not formally acknowledge the project's existence until the 2000s.

Colossus was not one computer but a series of computers developed by British scientists between 1943 and 1945. These 2-meter-tall electronic beasts played an instrumental role in breaking the Lorenz cipher, a code used for communications between high-ranking German officials in occupied Europe. The computers were said to have allowed allies to "read Hitler's mind," according to The Sydney Morning Herald. The technology behind Colossus was highly innovative for its time. Tommy Flowers, the engineer behind its construction, used over 2,500 vacuum tubes to create logic gates, a precursor to the semiconductor-based electronic circuits found in modern computers. While 1945's ENIAC was long considered the clear front-runner in digital computing, the revelation of Colossus' earlier existence repositioned it in computing history. (However, it's important to note that ENIAC was a general-purpose computer, and Colossus was not.)

GCHQ's public sharing of archival documents includes several photos of the computer at different periods and a letter discussing Tommy Flowers' groundbreaking work that references the interception of "rather alarming German instructions." Following the war, the UK government issued orders for the destruction of most Colossus machines, and Flowers was required to turn over all related documentation. The GCHQ claims that the Colossus tech "was so effective, its functionality was still in use by us until the early 1960s." In the GCHQ press release, Director Anne Keast-Butler paid tribute to Colossus' place in the UK's lineage of technological innovation: "The creativity, ingenuity and dedication shown by Tommy Flowers and his team to keep the country safe were as crucial to GCHQ then as today."

Microsoft today made Reading Coach, its AI-powered tool that provides learners with personalized reading practice, available at no cost to anyone with a Microsoft account. From a report: As of this morning, Reading Coach is accessible on the web in preview -- a Windows app is forthcoming. And soon (in late spring), Reading Coach will integrate with learning management systems such as Canva, Microsoft says. Reading Coach builds on Reading Progress, a plug-in for the education-focused version of Microsoft Teams, Teams for Education, designed to help teachers foster reading fluency in their students. Inspired by the success of Reading Progress (evidently), Microsoft launched Reading Coach in 2022 as a part of Teams for Education and Immersive Reader, the company's cross-platform assistive service for language and reading comprehension.

Amazon users are at this point used to search results filled with products that are fraudulent, scams, or quite literally garbage. These days, though, they also may have to pick through obviously shady products, with names like "I'm sorry but I cannot fulfill this request it goes against OpenAI use policy." From a report: As of press time, some version of that telltale OpenAI error message appears in Amazon products ranging from lawn chairs to office furniture to Chinese religious tracts. A few similarly named products that were available as of this morning have been taken down as word of the listings spreads across social media. Other Amazon product names don't mention OpenAI specifically but feature apparent AI-related error messages, such as "Sorry but I can't generate a response to that request" or "Sorry but I can't provide the information you're looking for," (available in a variety of colors). Sometimes, the product names even highlight the specific reason why the apparent AI-generation request failed, noting that OpenAI can't provide content that "requires using trademarked brand names" or "promotes a specific religious institution" or, in one case, "encourage unethical behavior."

The stock market has a new, but familiar, monarch. Microsoft's AI-powered stock rally has made the software giant the largest U.S. company by market value, surpassing Apple for the first time since November 2021. WSJ: Shares edged higher Thursday morning, bringing Microsoft's market value to nearly $2.87 trillion. Apple, meanwhile, fell 1%, pulling its market capitalization just below that threshold. Either Apple or Microsoft has held the title since Feb. 4, 2019, according to Dow Jones Market Data. Microsoft's stock has been on the rise for the past year thanks to the continued growth of its cloud computing division, even as major competitors like Amazon and Google have experienced a gradual slowdown in sales growth.

An anonymous reader quotes a report from NBC News: Touchscreens are going hands-free with a new device that allows users to scroll through smartphones using only their tongues. MouthPad^, a retainer-like trackpad chip that sits on the roof of the mouth, made its debut at the Consumer Electronics Show this week. It can sense tongue movements, allowing users to scroll, type, make calls and even play chess with a swipe or a click of their tongue. "It is a mouse for your mouth," Corbin Halliwill, a software engineer at Augmental, the company that created the device, said.

Augmental created MouthPad^ to be a helpful tool to those living with disabilities, especially those with a hand impairment or paralysis. It connects to any tablet, phone or computer through Bluetooth. [...] The Augmental team has been developing its working prototype for about two years, mostly fine-tuning controls and applying filters so the device can work even if it picks up saliva or water. The product is expected to hit the market later this year, and early access is available on their website now. [...] The MouthPad^ is clear around the teeth, and the center is a golden touchpad that is the contact point for the tongue. Inside there is also a force sensor that picks up left and right clicks or could be mapped to other hotkey options. On the side, a small bump that holds the Bluetooth antenna and wireless charging battery sticks out and lays against the cheek.

Augmental doesn't recommend leaving it in for meals, but it is safe to drink with it in -- Halliwill said he wears it in the office while drinking water and his morning coffee. The company hopes to build the technology out in the near future, bringing new possibilities for users in the coming months. Some additions may include voice and wheelchair control. The battery now lasts about five hours, but Augmental hopes to extend it to eight in their next version.You can watch the trailer for MouthPad^ here.

necro81 writes: ULA's Vulcan rocket, many years in development, had a successful first launch this morning from Cape Canaveral. The expendable rocket, which uses two methane-fueled BE-4 engines from Blue Origin in its first stage, is the successor to the Delta and Atlas-V launch vehicles.

Years overdue, and with a packed manifest for future launches, Vulcan is critical to the ULA's continued existence. The payload on this first mission is called Peregrine -- a lunar lander from Astrobotic. Unfortunately, Peregrine has suffered an anomaly some hours into flight; it is unclear whether the mission can recover. UPDATE: According to Reuters, Peregrine's propulsion system experienced issues hours after separating from Vulcan, "preventing the spacecraft from angling itself toward the sun for power."

"While mission engineers regained control, the faulty propulsion system is losing valuable propellant, forcing Astrobotic to consider 'alternative mission profiles,' suggesting a moon landing is no longer achievable," reports Reuters.

In the most recent update (#5) on X, Astrobotic said in a statement: "We've received the first image from Peregrine in space! The camera utilized is mounted atop a payload deck and shows Multi-Layer Insulation (MLI) in the foreground. The disturbance of the MLI is the first visual clue that aligns with out telemetry data that points to a propulsion system anomaly. Nonetheless, the spacecraft's battery is now fully charged, and we are using Peregrine's existing power to perform as many payload and spacecraft operations as possible. At this time, the majority of our Peregrine mission team has been awake and working diligently for more than 24 hours. We ask for your patience as we reassess incoming data so we can provide ongoing updates later this evening."

"[F]or years it was written off," writes CNN. " 'The economics were just way out,' said Martin Soltau, CEO of the UK-based company Space Solar.

"That may now be changing as the cost of launching satellites falls sharply, solar and robotics technology advances swiftly, and the need for abundant clean energy to replace planet-heating fossil fuels becomes more urgent." There's a "nexus of different technologies coming together right now just when we need it," said Craig Underwood, emeritus professor of spacecraft engineering at the University of Surrey in the U.K. The problem is, these technologies would need to be deployed at a scale unlike anything ever done before... "The big stumbling block has been simply the sheer cost of putting a power station into orbit." Over the last decade, that has begun to change as companies such as SpaceX and Blue Origin started developing reusable rockets. Today's launch costs at around $1,500 per kilogram are about 30 times less than in the Space Shuttle era of the early 1980s.

And while launching thousands of tons of material into space sounds like it would have a huge carbon footprint, space solar would likely have a footprint at least comparable to terrestrial solar per unit of energy, if not a smaller, because of its increased efficiency as sunlight is available nearly constantly, said Mamatha Maheshwarappa, payload systems lead at UK Space Agency. Some experts go further. Underwood said the carbon footprint of space-based solar would be around half that of a terrestrial solar farm producing the same power, even with the rocket launch...

There is still a huge gulf between concept and commercialization. We know how to build a satellite, and we know how to build a solar array, Maheshwarappa said. "What we don't know is how to build something this big in space..." Scientists also need to figure out how to use AI and robotics to construct and maintain these structures in space. "The enabling technologies are still in a very low technology readiness," Maheshwarappa said. Then there's regulating this new energy system, to ensure the satellites are built sustainably, there's no debris risk, and they have an end-of-life plan, as well as to determine where rectenna sites should be located. Public buy-in could be another huge obstacle, Maheshwarappa said. There can be an instinctive fear when it comes to beaming power from space.

But such fears are unfounded, according to some experts. The energy density at the center of the rectenna would be about a quarter of the midday sun. "It is no different than standing in front of a heat lamp," Hajimiri said.
The article argues that governments and companies around the world "believe there is huge promise in space-based solar to help meet burgeoning demand for abundant, clean energy and tackle the climate crisis." And they cite several specific examples:

• In 2020 the U.S. Naval Research Lab launched a module on an orbital test vehicle, to test solar hardware in space conditions.

• This year Caltech electrical engineering professor led a team that successfully launched a 30-centimeter prototype equipped with transmitters — and successfully beamed detectable energy down to earth.

• In June the U.K. government announced over $5 million in funding to universities and tech companies "to drive forward innovation" in the space-based solar sector.

• The U.S. Air Force Research Lab plans to launch a small demonstrator in 2025.

• Europe's its Solaris program aims to prove "the technical and political viability of space-based solar, in preparation for a possible decision in 2025 to launch a full development program."

• One Chinese spacecraft designer and manufacturer hopes to send a solar satellite into low orbit in 2028 and high orbit by 2030, according to a 2022 South China Morning News report.

"Billions of people" uses social media every month, notes the Wall Street Journal.. But "fewer and fewer are actually posting."

Instead they're favoring "a more passive experience, surveys of users and research from data-analytics firms say." In an October report from data-intelligence company Morning Consult, 61% of U.S. adult respondents with a social-media account said they have become more selective about what they post. The reasons are varied: People say they feel they can't control the content they see. They have become more protective about sharing their lives online. They also say the fun of social media has fizzled. This lurker mentality is widespread, across Meta Platforms' Instagram and Facebook along with X and TikTok....

In a survey conducted in the U.S. this summer, research firm Gartner found more than half of respondents believed the quality of social media has declined in the past five years. They cited misinformation, toxicity and the proliferation of bots as reasons it has gotten worse. "The less you trust social-media brands, the less of a good experience you're having," says Gartner analyst Emily Weiss. Users are less likely to share opinions or insight into their lives since the community they are looking for isn't there, she adds. Ads and suggested posts have also sucked the joy out of apps, some users say... The algorithmic spotlight on creators and their hyper-curated content has made some users feel insecure and less likely to share their own photos and videos, says Kevin Tran, media and entertainment analyst at Morning Consult. In turn, some now think of social apps more as sources of entertainment, like YouTube or Netflix.

Gartner estimates that 50% of users will either abandon or significantly limit their interactions with social media in the next two years.
Any threat to interacting is a threat to business, the article notes, adding "The companies are responding." They are investing in more private user experiences like messaging, and making interactions more secure. And encouraging people to post to a more intimate audience — as with Instagram's recently expanded Close Friends feature... Meta responded to user complaints, saying it would continue to work on improving recommendations to help creators reach more people. The company added a snooze button that pauses suggested posts for 30 days at a time, and chronological feeds that temporarily only show posts from accounts people follow... Meta began shifting its resources toward messaging, including efforts to enable end-to-end encryption by default across all of its messaging services... TikTok has also shown signs of investing more in the messaging portion of its app, nudging users to chat with people they haven't messaged in a while.
When the Wall Street Journal posted their article on Threads, Adam Mosseri (head of Instagram) responded that "People are sharing to feeds less, but to Stories more," and "even more still" in Messages ("even photos and videos"). Mosseri also said that Instagram's Notes feature — basically a post where you cab specify a smaller subset of your followers to see it — "have quickly become a big thing, particularly for young people.

"So it's no so much that people are sharing less," Mosseri argued, "but rather than they're sharing differently."

CNN describes them as "towering waves," driven into California's coastline by powerful storms and "posing a significant risk to people and structures along the coast."

Monstrous, 20-foot-plus waves on Thursday crashed over seawalls and swept away and injured several people, forced rescues and sent a damaging surge of water through coastal California streets.

Dangerous waves continued to slam the coast on Friday, forcing beaches to close. All Ventura County beaches will be closed through New Year's Eve because of the 15- to 20-foot waves expected along the central and Southern California coasts through Saturday evening... Sea levels have risen along most of the California coastline over the past century, NOAA data shows, as global temperatures climb and melt glaciers and ice sheets. Higher sea levels are making coastal flooding events worse and will continue to do so in the future.

The first round of dangerous waves hit alongside high tide Thursday morning. Several people were injured by a huge wave that slammed into Pierpont in the Ventura Beach area... Nearly 20 people were briefly swept away in the incident and eight people were taken to the hospital, Ventura officials said.
One bystander even filmed what CNN calls a"monster" wave, "the surge sweeping people and vehicles down the street... The massive waves pummeling the coastline, reeking havoc, flooding streets and businesses."

CNN's report also includes footage from nearly 300 miles north, showing a wave flooding a beachfront restaurant's courtyard in Santa Cruz, California. ("I just feel bad for the restaurants," says one local. "I know they just went through renovations from the last time this happened.") CNN's original article notes the sheriff's office there briefly issued an evacuation warning for some areas for part of Thursday, including one "where seawater filled beachside roadways and pushed against some homes, CNN affiliate KION reported."

And CNN's video report concludes by noting that "Parts of the California coast could see towering waves through the weekend, coastal flood and high surf alerts stretching from the southern border to the Bay Area."

For Epic's Christmas special this year, they're giving away for free "an AAA game that only launched back in 2022..." reports ComicBook.com — a game that invites players to "ally with a powerful spectral entity on theirâquest for vengeance."

ComicBook.com notes that the game giveaway is "not for long... Starting today and lasting until the late morning of December 25." The latest free game on the Epic Games Store is almost certainly the biggest title that users have received so far to coincide with the holidays... Initially released back in March 2022, Ghostwire: Tokyo is developed by Tango Gameworks and published by Bethesda. Since this is a AAA title, Ghostwire: Tokyo normally retails for $59.99 in total. As such, for it to now be free means that this is one of the best deals that Epic has had so far to close out the year...

Epic's ongoing holiday promotion is set to extend to January and should see 17 games in total being handed out at no cost. This promotion will continue tomorrow on Christmas Day when a new freebie lands on the PC platform.

"I'm optimistic about the world's climate progress," Bill Gates wrote this week — but he also explained why.

"In 2024 and beyond, I predict we will see lots of new innovations coming into the marketplace — even in very complicated areas like nuclear. The climate crisis can feel overwhelming, but I find it easier to stay optimistic when you focus on all the progress we're making. If the world continues to prioritize funding innovation, I'm hopeful we can make good progress on our climate goals."

And elsewhere Gates writes that "AI is about to supercharge the innovation pipeline." My work has always been rooted in a core idea: Innovation is the key to progress. It's why I started Microsoft, and it's why Melinda and I started the Gates Foundation more than two decades ago. Innovation is the reason our lives have improved so much over the last century. From electricity and cars to medicine and planes, innovation has made the world better. Today, we are far more productive because of the IT revolution. The most successful economies are driven by innovative industries that evolve to meet the needs of a changing world.

My favorite innovation story, though, starts with one of my favorite statistics: Since 2000, the world has cut in half the number of children who die before the age of five. How did we do it? One key reason was innovation. Scientists came up with new ways to make vaccines that were faster and cheaper but just as safe. They developed new delivery mechanisms that worked in the world's most remote places, which made it possible to reach more kids. And they created new vaccines that protect children from deadly diseases like rotavirus.

In a world with limited resources, you have to find ways to maximize impact. Innovation is the key to getting the most out of every dollar spent. And artificial intelligence is about to accelerate the rate of new discoveries at a pace we've never seen before.

One of the biggest impacts so far is on creating new medicines. Drug discovery requires combing through massive amounts of data, and AI tools can speed up that process significantly. Some companies are already working on cancer drugs developed this way. But a key priority of the Gates Foundation in AI is ensuring these tools also address health issues that disproportionately affect the world's poorest, like AIDS, TB, and malaria. We're taking a hard look at the wide array of AI innovation in the pipeline right now and working with our partners to use these technologies to improve lives in low- and middle-income countries...

I feel like a kid on Christmas morning when I think about how AI can be used to get game-changing technologies out to the people who need them faster than ever before. This is something I am going to spend a lot of time thinking about next year.
Gates notes that researchers are already exploring questions like "Can AI combat antibiotic resistance?"

New submitter ekimminau writes: On the morning of December 20, 2023, thousands of users turned on their Samsung TV to find that the Samsung TV Plus application was missing. Available for free on 2016-2023 Samsung Smart TVs, Galaxy devices, Smart Monitors, Family Hub refrigerators, and the web, for many it is their primary method of TV viewing. The masses began flocking to the Samsung community forums asking ... what was going on.

From Cord Cutters: At this time, Samsung has not posted any updates about the outage. Customer service has been telling customers they are aware of the outage and are working on fixing it. This news comes as Samsung recently added seven local FOX news channels for community stories, sports updates, weather forecasts and more. The new markets are Austin, Detroit, Milwaukee, Orlando, Phoenix, Seattle and Tampa Bay. Right now, this outage seems to only be affecting the app on Smart TVs as the website is still working letting anyone stream Samsung TV Plus for free streaming online through the website.

Southwest Airlines is still paying for its meltdown during the 2022 holidays that stranded millions of travelers -- and the tab is growing. From a report: The U.S. Transportation Department has ordered Southwest to pay a $140 million civil penalty, part of a broader consent order after the airline's operational failures a year ago. That penalty is by far the largest the DOT has ever levied for consumer protection violations, according to a statement from the department. "This is not just about Southwest," Transportation Secretary Pete Buttigieg said in an interview with NPR's Morning Edition on Monday. "This is about the entire industry, sending a signal that you should not be cutting corners -- because if you fail your passengers, we will hold you accountable."

A major winter storm last December caused travel disruptions across the country as airlines canceled thousands of flights. But while other airlines recovered relatively quickly, Southwest fell apart. The airline ultimately canceled 16,900 flights, stranding more than 2 million passengers. In a statement, Southwest described the agreement as "a consumer-friendly settlement." The airline says it has taken steps since last year's disruption to improve its operational resiliency and customer care.

Scientists have pinpointed the cause of nausea and vomiting in pregnancy, "finding that the severity of illness is influenced by how much of a hormone called GDF15 the growing fetus makes," reports Science Magazine. The findings have been published in the journal Nature. From the report: GDF15 is present in the blood of nonpregnant people and is known to be associated with nausea; it's also been tested as a weight loss aid because of its tendency to suppress appetite. Levels of the hormone rise sharply in early pregnancy and increase throughout gestation. Pregnant people with higher GDF15 concentrations have been documented as having a higher risk of vomiting and nausea. Some researchers suggest the hormone-caused aversion to some smells and tastes might encourage an expectant parent to avoid foods potentially dangerous to the fetus.

To find out more about GDF15 changes during pregnancy, University of Cambridge physician-scientist Stephen O'Rahilly and colleagues studied half a dozen pregnant people who were known from previous genetic screening to produce a slightly different version of the GDF15 protein from their fetuses. Researchers could take advantage of that difference to trace whether GDF15 in the parent's blood originated in the parental or fetal genome: Almost all of it came from the fetus, O'Rahilly says. The team also took a closer look at the link between GDF15 levels and pregnancy sickness. Consistent with previous research, questionnaires from more than 300 participants showed that people who reported vomiting and nausea had significantly higher levels of circulating GDF15 on average than people without these symptoms. The researchers also found elevated levels of GDF15 in an analysis of more than 50 women hospitalized with hyperemesis gravidarum.

Still, hormone levels alone couldn't explain the difference in sickness severity. "There was a big overlap" in GDF15 levels between the groups, O'Rahilly says. He and co-author Marlena Fejzo, a researcher at the University of Southern California, suspected that people's sensitivity to GDF15 might also play a role. (Fejzo began to study the condition after her own pregnancy loss following hyperemesis gravidarum.) To test the idea, the researchers studied 10 nonpregnant people with a rare genetic variant known to carry a heightened risk of hyperemesis gravidarum. These people had reduced GDF15 levels in their blood, hinting that naturally low levels of the hormone might predispose someone to sickness during pregnancy. The researchers found the opposite when they asked 20 pregnant people with beta thalassemia, a blood disorder associated with high GDF15 levels, about their pregnancy symptoms: Just 5% of this group reported nausea or vomiting. O'Rahilly's lab found a similar pattern in animal experiments.

Google's making the second generation of Imagen, its AI model that can create and edit images given a text prompt, more widely available -- at least to Google Cloud customers using Vertex AI who've been approved for access. From a report: But the company isn't disclosing which data it used to train the new model -- nor introducing a way for creators who might've inadvertently contributed to the data set to opt out or apply for compensation.

Called Imagen 2, Google's enhanced model -- which was quietly launched in preview at the tech giant's I/O conference in May -- was developed using technology from Google DeepMind, Google's flagship AI lab. Compared to the first-gen Imagen, it's "significantly" improved in terms of image quality, Google claims (the company bizarrely refused to share image samples prior to this morning), and introduces new capabilities including the ability to render text and logos. "If you want to create images with a text overlay -- for example, advertising -- you can do that," Google Cloud CEO Thomas Kurian said during a press briefing on Tuesday.