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Explain it like I’m 5: Why is everyone on speakerphone in public?

culture, speakerphone / 9u50fv / March 11, 2026

The key to working at a place like Ars Technica is solid news judgment. I’m talking about the kind of news judgment that knows whether a pet peeve is merely a pet peeve or whether it is, instead, a meaningful example of the Ways that Technology is Changing our World.

The difference between the two is one of degree: A pet peeve may drive me nuts but does not appear to impact anyone else. A Ways that Technology is Changing our World story must be about something that drives a lot of people nuts.

“But where is the threshold?” I hear you asking plaintively. “It’s extremely important that I know when something crosses the line from pet peeve to important, chin-stroking journalism topic!”

Fortunately, the answer is simple. The threshold has been breached when your local public transit agency puts up a sign about the behavior in question.

Which brings me to the sign I saw yesterday in Philadelphia.

“Unless the tea is REALLY hot, keep the call off speaker,” it said.

(For those not in the US, “tea” in this context means gossip or news.)

SEPTA, the local transit agency, runs the buses and commuter rail in Philadelphia, and you can tell from the light-hearted-but-seriously-don’t-do-this tone of the message that speakerphone-wielding passengers are now widely complained about by their fellow riders.

I share their disdain, but for me, the dark and judgmental thoughts I have when I see this behavior are also paired with confusion. Why is it happening? Do these people not know that it is actually more work to hold your phone out in front of you than up to your ear? Do they have no common decency, manners, or taste? Do they genuinely not care if everyone in the frozen foods aisle overhears them talking about Aunt Kathy’s diagnosis? It’s bizarre.

At least when it comes to something like TikTok or Spotify, there’s a certain logic. Perhaps you have no headphones but need to unwind after a long day, and you just can’t imagine anyone who might not enjoy the soothing sounds of [Harry Styles/Cannibal Corpse/Wu-Tang Clan]?

Explain it like I’m 5: Why is everyone on speakerphone in public? Read More »

Intel shores up its desktop CPU lineup with boosted Core Ultra 200S Plus chips

intel, intel core ultra, Tech / 9u50fv / March 11, 2026

Intel’s Core Ultra 200S desktop chips, codenamed “Arrow Lake,” first launched in late 2024, and they were the most significant updates to Intel’s desktop CPU lineup in years. But that didn’t mean they were always improvements over what came before: while they’re power-efficient and run cooler than older 13th- and 14th-generation Core CPUs, they sometimes struggled to match those older chips’ gaming performance. And for gaming systems in particular, they’ve always had to live in the shadow of AMD’s Ryzen 7000 and 9000-series X3D processors, chips with extra L3 cache that disproportionately benefits games.

Intel doesn’t have a next-generation upgrade available for desktops yet, but it is shoring up its desktop lineup with a pair of upgraded chips. The Core Ultra 200S Plus processors (also referred to as Arrow Lake Refresh, in some circles) add more processor cores, boost clock speeds, add support for faster memory, and speed up the internal communication between different parts of the processor. Collectively, Intel says these improvements will boost gaming performance by an average of 15 percent.

The Core Ultra 7 270K Plus and 270KF Plus (a real mouthful, all of these names are getting to be) add four more efficiency cores compared to the Core Ultra 7 265K, bringing the total number of cores to 24 (8 P-cores and 16 E-cores). If you wanted that many CPU cores previously, you would have had to spring for a Core Ultra 9 chip. The Core Ultra 5 250K Plus and 250KF Plus also get four more E-cores than the 245K, bringing its total to 6 P-cores and 12 E-cores.

Intel shores up its desktop CPU lineup with boosted Core Ultra 200S Plus chips Read More »

AI can rewrite open source code—but can it rewrite the license, too?

AI, chardet, Claude Code, Mark Pilgrim / 9u50fv / March 10, 2026

Is it clean “reverse engineering” or just an LLM-filtered “derivative work”?

Meet your new open source coding team! Credit: Getty Images

Computer engineers and programmers have long relied on reverse engineering as a way to copy the functionality of a computer program without copying that program’s copyright-protected code directly. Now, AI coding tools are raising new issues with how that “clean room” rewrite process plays out both legally, ethically, and practically.

Those issues came to the forefront last week with the release of a new version of chardet, a popular open source python library for automatically detecting character encoding. The repository was originally written by coder Mark Pilgrim in 2006 and released under an LGPL license that placed strict limits on how it could be reused and redistributed.

Dan Blanchard took over maintenance of the repository in 2012 but waded into some controversy with the release of version 7.0 of chardet last week. Blanchard described that overhaul as “a ground-up, MIT-licensed rewrite” of the entire library built with the help of Claude Code to be “much faster and more accurate” than what came before.

Speaking to The Register, Blanchard said that he has long wanted to get chardet added to the Python standard library but that he didn’t have the time to fix problems with “its license, its speed, and its accuracy” that were getting in the way of that goal. With the help of Claude Code, though, Blanchard said he was able to overhaul the library “in roughly five days” and get a 48x performance boost to boot.

Not everyone has been happy with that outcome, though. A poster using the name Mark Pilgrim surfaced on GitHub to argue that this new version amounts to an illegitimate relicensing of Pilgrim’s original code under a more permissive MIT license (which, among other things, allows for its use in closed-source projects). As a modification of his original LGPL-licensed code, Pilgrim argues this new version of chardet must also maintain the same LGPL license.

“Their claim that it is a ‘complete rewrite’ is irrelevant, since they had ample exposure to the originally licensed code (i.e., this is not a ‘clean room’ implementation),” Pilgrim wrote. “Adding a fancy code generator into the mix does not somehow grant them any additional rights. I respectfully insist that they revert the project to its original license.”

Whose code is it, anyway?

In his own response to Pilgrim, Blanchard admits that he has had “extensive exposure to the original codebase,” meaning he didn’t have the traditional “strict separation” usually used for “clean room” reverse engineering. But that tradition was set up for human coders as a way “to ensure the resulting code is not a derivative work of the original,” Blanchard argues.

In this case, Blanchard said that the new AI-generated code is “qualitatively different” from what came before it and “is structurally independent of the old code.” As evidence, he cites JPlag similarity statistics showing that a maximum of 1.29 percent of any chardet version 7.0.0 file is structurally similar to the corresponding file in version 6.0.0. Comparing version 5.2.0 to version 6.0.0, on the other hand, finds up to 80 percent similarity in some corresponding files.

“No file in the 7.0.0 codebase structurally resembles any file from any prior release,” Blanchard writes. “This is not a case of ‘rewrote most of it but carried some files forward.’ Nothing was carried forward.”

Blanchard says starting with a “wipe it clean” commit and a fresh repository was key in crafting fresh, non-derivative code from the AI. Credit: Dan Blanchard / Github

Blanchard says he was able to accomplish this “AI clean room” process by first specifying an architecture in a design document and writing out some requirements to Claude Code. After that, Blanchard “started in an empty repository with no access to the old source tree and explicitly instructed Claude not to base anything on LGPL/GPL-licensed code.”

There are a few complicating factors to this straightforward story, though. For one, Claude explicitly relied on some metadata files from previous versions of chardet, raising direct questions about whether this version is actually “derivative.”

For another, Claude’s models are trained on reams of data pulled from the public Internet, which means it’s overwhelmingly likely that Claude has ingested the open source code of previous chardet versions in its training. Whether that prior “knowledge” means that Claude’s creation is a “derivative” of Pilgrim’s work is an open question, even if the new code is structurally different from the old.

And then there’s the remaining human factor. While the code for this new version was generated by Claude, Blanchard said he “reviewed, tested, and iterated on every piece of the result using Claude. … I did not write the code by hand, but I was deeply involved in designing, reviewing, and iterating on every aspect of it.” Having someone with intimate knowledge of earlier chardet code take such a heavy hand in reviewing the new code could also have an impact on whether this version can be considered a wholly new project.

Brave new world

All of these issues have predictably led to a huge debate over legalities of chardet version 7.0.0 across the open source community. “There is nothing ‘clean’ about a Large Language Model which has ingested the code it is being asked to reimplement,” Free Software Foundation Executive Director Zoë Kooyman told The Register.

But others think the “Ship of Theseus”-style arguments that can often emerge in code licensing dust-ups don’t apply as much here. “If you throw away all code and start from scratch, even if the end result behaves the same, it’s a new ship,” Open source developer Armin Ronacher said in a blog post analyzing the situation.

The legal status of AI-generated code is still largely unsettled. Credit: Getty Images

Old code licenses aside, using AI to create new code from whole cloth could also create its own legal complications going forward. Courts have already said that AI can’t be the author on a patent or the copyright holder on a piece of art but have yet to rule on what that means for the licensing of software created in whole or in part by AI. The issues surrounding potential “tainting” of an open source license with this kind of generated code can get remarkably complex remarkably quickly.

Whatever the outcome here, the practical impact of being able to use AI to quickly rewrite and relicense many open source projects—without nearly as much effort on the part of human programmers—is likely to have huge knock-on effects throughout the community.

“Now the process of rewriting is so simple to do, and many people are disturbed by this,” Italian coder Salvatore “antirez” Sanfilippo wrote on his blog. “There is a more fundamental truth here: the nature of software changed; the reimplementations under different licenses are just an instance of how such nature was transformed forever. Instead of combating each manifestation of automatic programming, I believe it is better to build a new mental model and adapt.”

Others put the sea change in more alarming terms. “I’m breaking the glass and pulling the fire alarm!” open source evangelist Bruce Perens told The Register. “The entire economics of software development are dead, gone, over, kaput! … We have been there before, for example when the printing press happened and resulted in copyright law, when the scientific method proliferated and suddenly there was a logical structure for the accumulation of knowledge. I think this one is just as large.”

Kyle Orland has been the Senior Gaming Editor at Ars Technica since 2012, writing primarily about the business, tech, and culture behind video games. He has journalism and computer science degrees from University of Maryland. He once wrote a whole book about Minesweeper.

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NASA and SpaceX disagree about manual controls for lunar lander

blue moon, blue origin, human landing system, NASA, Space / 9u50fv / March 10, 2026

The report notes that during every one of the Apollo program’s crewed lunar landings, astronauts engaged the backup manual control method. (Of course, this occurred six decades ago, when flight software was considerably less sophisticated than today.)

As NASA and SpaceX near a key decision point, known as Critical Design Review, the issue remains unresolved. The new report suggests that this may result in automation being the only landing method.

A similar fight over Dragon

The space agency and SpaceX engaged in a similar back-and-forth during the design process for the Crew Dragon spacecraft a decade ago. SpaceX initially wanted touchscreens only, with limited flight commands available to astronauts. NASA pushed back and wanted what were essentially joysticks for astronauts to fly the vehicles like previous spacecraft. A former NASA astronaut then working at SpaceX, Garret Reisman, helped broker a compromise by which astronauts could manually fly the vehicles using controls on touchscreens.

However, the new report says the flight controls for Dragon were built on many successful missions by a cargo version of the vehicle that flew to the International Space Station.

“Starship will not have the same level of proven flight heritage in the actual operating environment for its crewed lunar missions,” the report states. “Incorporating this system capability is a key element of HLS’s human-rating certification and part of an essential crew survival strategy.”

A design for Blue Origin’s manual control has not yet been made, according to the inspector general.

There is other interesting information in the report, including details on the uncrewed demonstration flights that SpaceX and Blue Origin are both required to fly before human missions can take place. The inspector general notes that these flights will not require life support systems and airlocks, as human missions will. Nor will the tall Starship vehicle be required to test an elevator to bring crew down to the surface.

There will also be a limited ability to test the abrasive impact of lunar dust, expected to be returned inside the vehicles after Moonwalks, on life support equipment during these uncrewed demonstrations.

NASA and SpaceX disagree about manual controls for lunar lander Read More »

Tiny, long-armed dinosaur leads to rethink of dinosaur miniaturization

Biology, dinosaurs, evolution, paleontology, Science / 9u50fv / March 8, 2026

Small size seems to have come before a change in diet for a tiny dinosaur lineage.

Alvarezsaurids were mostly small-bodied theropods that paleontologists originally misinterpreted as early flightless birds, only to later recognize them as an ant-eating lineage of non-avian dinosaurs. For years, we suspected that Alvarezsaurids underwent a rare process of evolutionary miniaturization directly coupled to a diet of social insects like ants and termites. It was a tidy hypothesis: They got smaller to become more efficient at catching ants.

Now, a recently discovered fossil of one of the smallest alvarezsaurids ever found suggests that the evolution of miniature dinosaurs likely wasn’t as neat and linear as we thought. This new species, called Alnashetri cerropoliciensis, probably did not feed on ants at all. “It was a pursuit predator actively hunting insects and small mammals,” said Peter Makovicky, a paleontologist at the University of Minnesota.

The oddball

Alverezsaurids, found mostly in the Late Cretaceous rocks of Asia and South America, had short forelimbs tipped with a single oversized thumb claw built for digging. They also had minute teeth and sensory adaptations akin to those in modern nocturnal birds—everything necessary to work on termite mounds. “The explanation of their small body size has been tied to this specialization,” Makovicky explained.

The dinosaur he and his colleagues found, however, did not look like a specialized ant-eater.

The fossil of Alnashetri cerropoliciensis was unearthed from the Candeleros Formation at the Cerro Policía locality in Argentina’s Río Negro Province and is estimated to have lived roughly 90 million years ago. It currently stands as the most complete and smallest Alvarezsaurid skeleton found in South America.

While missing its skull roof, parts of its right arm, its lower right leg, and much of its tail, the skeleton preserves plenty of its crucial anatomy. Its bone tissue reveals that the alvarezsaurid was a subadult, likely approaching sexual maturity, as indicated by the presence of what appears to be medullary bone, a temporary tissue associated with egg-laying in modern birds. Despite being nearly fully grown, this dinosaur is estimated to have weighed a mere 700 grams.

The real surprise, though, came when researchers realized that Alnashetri wasn’t a highly specialized, late-stage Alvarezsauroid. Instead, despite living in the Late Cretaceous, it occupied an early-branching position among earlier, basal members of the clade.

This combination of tiny size and early-branching status fundamentally breaks our previous model of how these animals evolved. If the miniaturization of Alvarezsauroids was strictly tied to their lifestyle as stubby-armed insect-eaters, an early-diverging species like Alnashetri should have some transitional features on a steady, clade-wide march toward that extreme endpoint. But it didn’t look that way.

“It’s a very long-limbed animal, so it was probably fairly fast. My best analogy would be something like a roadrunner from the American West,” Makovicky said.

Arms and teeth

Late Alvarezsaurids had tiny, robust forelimbs that were less than half the length of their femurs. Alnashetri, though, sported comparatively long forelimbs that were 61 percent of the length of its entire hindlimb. While it had three-fingered hands with a robust first digit, a hallmark of its group, it still retained slender second and third digits, unlike its later cousins.

Other features that challenge the established evolutionary model of miniature dinosaurs are Alnashetri’s jaws and teeth. Its dentition features non-serrated teeth set into sockets, but importantly, these teeth are not extremely small, as they were in the late Alvarezsaurids like Shuvuuia or Jaculinykus. “This decoupled the evolution of small body size from anatomical specializations,” Makovicky explained.

The team concluded that extreme miniaturization in Alvarezsaurids did not necessarily co-evolve with either the evolution of smaller arms more suitable for digging or small teeth built for crushing ants and/or termites. Instead of a clade-wide trend where the entire lineage steadily shrank over time, a new evolutionary model that includes Alnashetri suggests that Alvarezsaurid body mass fluctuated repeatedly. Alnashetri, it turns out, achieved its 700-gram frame independently from the other, highly specialized alvarezsaurid species.

But Alnashetri didn’t just upend the understanding of how Alvarezsaurids evolved their tiny bodies. It also redrew the map of where they lived.

Museum tour

Before Makovicky’s study, it was a mystery why Alvarezsaurids were found almost exclusively in the late Cretaceous rocks of Asia and South America. The previous leading hypothesis suggested that the group must have dispersed back and forth between these two landmasses relatively late in the game. But placing Alnashetri, a remarkably basal member, into their evolutionary tree created a massive ghost lineage. The phylogenetic analysis linked geographically close South American species to much older, geologically distant Asian taxa like Bannykus and Xiyunykus, implying that the group must have diverged way back in the Jurassic period.

To explain this chronological and geographic gap, Makovicky and his colleagues started digging through historical museum collections to see if early Alvarezsaurids had been hiding there under different names. It turned out they had.

The team successfully reidentified a small, fragmentary theropod from the Upper Jurassic Morrison Formation in North America, as well as a Lower Cretaceous taxon from the Isle of Wight in Europe. These were early, diverging Alvarezsaurids, and they possessed distinct features such as specialized ball-and-socket joints in the neck vertebrae that are unique in the Alvarezsaurid clade. These museum reidentifications entirely changed the biogeographical story.

If Alvarezsaurids were roaming North America and Europe in the Jurassic and Early Cretaceous, they weren’t just performing a late-stage migration between Asia and South America. Instead, the new model proposed by Makovicky and his team reconstructs a widespread Pangaean distribution. Early Alvarezsaurids were likely present across the globe before the supercontinent Pangaea fully fractured.

The Late Cretaceous distributions we see in the fossil record today would therefore be the result of populations slowly becoming isolated as the continents drifted apart, combined with regional extinctions that wiped them out in places like North America and Europe. The populations in Asia and South America represent surviving pockets.

Still, Makovicky’s work produced far more questions than answers. If at least some Alvarezsaurids did not evolve their miniature bodies as an adaptation to eating ants, what made them so small?

Messy evolution

“We sort of falsified this nice narrative where Alvarezsaurid body size change was driven by ecology, but unfortunately, we don’t have anything good to replace it,” Makovicky acknowledged.

The classic story of Alvarezsaurids—a lineage steadily shrinking in lockstep as it committed to a life of termite-hunting, finally migrating across the Late Cretaceous globe—was neat and logical, but it’s apparently gone now. “That’s science. Sometimes you can falsify a hypothesis without necessarily finding a better one to support,” Makovicky added. But his team is already busy looking for evidence documenting the new, more complex and messier version of Alvarezsaurid evolutionary history. “We have a couple of angles we’re pursuing,” he said.

The first involves taking a closer look at Alnashetri’s anatomy using CT scans. The goal here is to treat Alnashetri as a starting point to understand the stepwise evolution of its ant-eating, specialized cousins. Most of this meticulous scanning is currently happening in Argentina. The second angle, though, seems way more thrilling. “By pure luck, we found another Alvarezsaur in the same general area,” Makovicky said.

The other Alvarezsaur is bigger than Alnashetri and has slightly shorter forelimbs. “It’s still being prepared, but I think it will sort of give us the next chapter in the story of how Alvarezsaurids evolved,” Makovicky explained. “It’s probably a few years out in the making.”

Makovicky’s work on Alnashetri is published in Nature: https://doi.org/10.1038/s41586-026-10194-3

Jacek Krywko is a freelance science and technology writer who covers space exploration, artificial intelligence research, computer science, and all sorts of engineering wizardry.

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Hunting for elusive “ghost elephants”

culture, elephant conservation, elephants, National Geographic, pachyderms, Science, werner herzog / 9u50fv / March 7, 2026

the elephant never forgets

Werner Herzog directed this evocative NatGeo documentary of an ornithologist’s quest to find a new species.

The first photo of a “ghost elephant” captured by a motion-controlled camera. Credit: Courtesy of The Wilderness Project Archive

Deep in the Angolan Highlands lurks a rumored new species of elephant. Conservationist and ornithologist Steve Boyes has been searching for this elusive herd for years and the story of his journey is the focus of Ghost Elephants, a haunting, evocative documentary directed by Werner Herzog. The film debuted at the Venice International Film Festival last summer and is now coming to National Geographic and Disney+.

It might seem unusual for an ornithologist to embark on a quest to find remote pachyderms, but for Boyes the connection is perfectly natural. He grew up in South Africa and wanted nothing more than to be an explorer, just like the people he read about every month in National Geographic magazine. “I grew up waiting for the magazine to arrive; I wanted the maps,” Boyes told Ars. “Those would become my garden, or the field beyond, or the river—wild places imagined and real.”

Boyes’ parents frequently took him and his brother out into the wild, including visits to Botswana and Tanzania. “We used to embed ourselves in baboon troops and walk with impalas,” said Boyes, and while his brother feared elephants, Boyes was walking with them from a young age. Ghost Elephants contains some gorgeous underwater footage of elephant feet plodding through the water, and elephants swimming on their sides, behavior that matches Boyes’ own experiences with the animals. Under the right circumstances, if they don’t feel threatened, elephants “will come and swim around you and with you and interact with you,” he said. “So elephants have always fascinated me.”

As an adult, Boyes conducted his PhD research on the Meyer’s parrot in the Okavango Delta, which has the single largest population of elephants in the world. They shared a symbiotic relationship of sorts with the parrots. “Every tree that the parrots were feeding on, the elephantss were feeding on,” he said. “The elephants were creating the nest cavities for the parrots by disturbing the trees.”

Boyes first met Herzog at a Beverly Hills restaurant through a mutual friend and the two ended up chatting at length, “about the meaning of life, where thoughts come from, personal experiences of loneliness, and the ghost elephants,” said Boyes. Herzog has said that after meeting Boyes, “An unexpected project that felt like the hunt for Moby Dick, the White Whale, came at me with urgency. Like many of my films, this is an exploration of dreams, of imagination—weighed against reality.”

Dreams weighed against reality

Dr. Steve Boyes stands in the rotunda of the Smithsonian Museum confronting the largest elephant ever killed Skellig Rock, Inc

When Herzog visited Boyes in Namibia, he fell in love with the region’s culture, mythology, and people, and his camera captures far more than just a scientific quest for elephants. We are treated to a ritual elephant dance—during which a tribal elder falls into a trance, so the spirit of the elephant can enter his body—and a history of the tribe’s ingenious use of poisoned arrows to hunt. Boyes is granted an audience with the local king, seeking his blessing for the expedition. At one point, the director becomes fascinated by a poisonous spider he films in the middle of the night, carrying dozens of equally poisonous babies on her back.

“Once he was locked in, there was no discussion with him around the story or anything outside of being interviewed or being actively in the experience,” said Boyes of Herzog’s creative process. It was direct and efficient, with Herzog usually capturing the footage he needed right away, seeing no need for additional coverage. The questions the director asked were unique as well. “The first question was, ‘What would a world without elephants be like? What do you dream of?’” recalled Boyes. “He took us into a mode of thought that was very different from just preparing for an expedition. I love him. He’s wonderful.”

Ghost Elephants opens in the rotunda of the Smithsonian National Museum of Natural History, which has housed the largest elephant mount in the world since 1959—affectionately dubbed Henry or “the Giant of Angola.” A Hungarian big game hunter named Josef J. Fénykövi shot and killed Henry in November 1955 with a dozen high-caliber bullets. Henry is the largest elephant ever recorded, over 13 feet tall and weighing about 11 tons, and there was the remains of an old iron slug from a flintlock rifle embedded in Henry’s left front leg. So Henry could have been 100 years old or more at the time he was killed.

Visiting Henry is the perfect starting point for the film, since Boyes suspected he might be related to the new species of ghost elephant in the Angolan highlands. Boyes had searched for these elephants using modern camera traps and other advanced technologies, to no avail. This time, he recruited three KhoiSan master trackers—Xui, Xui Dawid, and Kobus—who left their southern village to accompany Boyes’ team into the Angolan Highlands.

It was not an easy trip, given the remoteness of the “Source of Life,” i.e., the Angolan Highlands Water Tower where the elephants live—so named because it provides 95 percent of the water to the Okavango Delta. They made the first part of the journey by car, abandoning the vehicles once they reached the first impassable river and carrying supplies and motorcycles through the water to the opposite bank. They traversed the final 30 miles on foot.

Finally, after several months, having collected dung samples (for DNA analysis) and captured a bit of blurry cell phone footage showing the barest glimpse of a ghost elephant lurking in thick foliage, Boyes reached what he described as a point of “complete surrender.” It was the last day of the expedition, and he and and several members of his team went out once more just before dawn. Other team members had been tracking two big bulls and Boyes et al. were able to follow the tracks, this time with master tracker Xui out in front.

About three hours in, Xui suddenly stopped and whispered, “Steve, Steve, Steve.” And an elephant walked into full view. Boyes was able to capture the footage on his cell phone—the only available camera at the time. Alas, the arrow meant to take a skin sample just bounced off the elephant’s thick hide and scared the animal away. Boyes and his cohorts pursued it for the next five hours until they ran out of water and made their way back to camp, exhausted.

On the hunt

During the elephant trance dance, the village elder faints. Skellig Rock, Inc

The genetics analysis completed thus far has confirmed that these remote elephants are indeed a new, genetically isolated species, and that Henry’s father was a ghost elephant. Boyes, as a conservationist, is deeply concerned about their continued survival. The documentary includes disturbing 1950s footage of hunters slaughtering elephants from helicopters, felling the magnificent creatures with nary a thought about the delicate ecosystem they were disrupting. “What you’re seeing in that horrific footage is the wholesale destruction of wildlife populations to make room for agriculture and development,” said Boyes. “That happened all across Africa. We lost a huge amount of wildlife over that period.”

The very remoteness and inaccessibility of their home turf has protected the ghost elephants thus far. Even if a helicopter could reach the area, it wouldn’t have sufficient fuel to get back out. But traditional Western approaches to conservation, like establishing the land as a protected wildlife reserve free of any human presence, might not be the best strategy, per Boyes, who thinks we should be taking our cues from the local inhabitants. “They can talk for days about conservation,” he said. “They have their own hunting season, sacred sites, they confiscate weapons. They manage this very closely.”

So the idea of separating people from the elephants “is counterintuitive to them,” Boyes continued. “They’re like, ‘This place will completely fall apart without us.’ We’re talking about 20,000 people in a landscape the size of England, very connected to language, tradition, and culture.” The best strategy, he feels, is for those people “to remain there as the guardians and custodians of those landscapes, and to continue to protect the elephants.”

Meanwhile, the quest to document the herd continues. Last November, Boyes was able to get samples from five different bull elephants based on the tracks they left behind. They found the tracks of 16 more members of the herd across the river, including five babies, and then the tracks of another 18 elephants.

“The gift of working with the master trackers is that you don’t to need to see them to know that they’re there,” said Boyes. “I’ve gone back three times since filming to track the elephants and I’m going back again in May. I’m going back in July. I can’t get enough of these forests. But I don’t need to see [that first elephant] again. If I do, I do.”

Ghost Elephants premieres on National Geographic on March 7, 2026, and will be available for streaming on Disney+ the following day. There is also a companion coffee table book, Okavango and the Source of Life: Exploring Africa’s Lost Headwaters.

Jennifer is a senior writer at Ars Technica with a particular focus on where science meets culture, covering everything from physics and related interdisciplinary topics to her favorite films and TV series. Jennifer lives in Baltimore with her spouse, physicist Sean M. Carroll, and their two cats, Ariel and Caliban.

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A unicorn-like Spinosaurus found in the Sahara

Biology, dinosaurs, evolution, paleontology, Science, spinosaurus / 9u50fv / March 7, 2026

A unique head spike and fish-eating jaws help make sense of these dinosaurs.

The Spinosaurus is a sail-backed, crocodile-snouted dinosaur that Hollywood depicted as a giant terrestrial predator capable of taking down a T. rex in Jurassic Park 3. Then they changed their mind and made it a fully aquatic diver in Jurassic World Rebirth—a rendering that was more in line with the latest paleontological knowledge.

But now, deep in the Sahara Desert, a team of researchers led by Paul C. Sereno, a paleontologist at the University of Chicago, discovered new Spinosaurus fossils suggesting both scientists and filmmakers might have got it all wrong again. The Spinosaurus most likely wasn’t an aquatic diver because, apparently, it couldn’t dive.

Bones in the sand

While the T. rex-beating version of the Spinosaurus was considered unlikely due to its relatively fragile skull, the newer depiction as an aquatic diver made more sense in light of paleontological evidence. Until now, all remains of these predators were pulled from coastal deposits near ancient seas and oceans. That geographic distribution was consistent with the aquatic lifestyle interpretation. If a creature lived on the coast, maybe it swam out to sea like a prehistoric seal, only crawling out to the beaches to rest just as it was depicted in Jurassic World Rebirth.

But the Spinosaurus found by Sereno and his colleagues lived in a completely different neighborhood. The fossils were discovered in the central Sahara of Niger, in what was a terrestrial area called Jenguebi. “When you want to find something really, truly new, you have to go where few have been or maybe nobody has been,” Sereno says. “In the case of Jenguebi, I don’t think it’s seen a paleontologist before.” His team managed to find the site, led by local Tuareg guides after driving for over a day and half through the desert. “We had a team of nearly 100, including paleontologists, filmmakers, guides, and 64 armed guards. You feel like you’re in an Indiana Jones movie,” Sereno recalls. But the effort paid off.

Back in the Cenomanian stage of the Late Cretaceous, the Jenguebi was an inland basin laced with rivers—a riparian habitat situated between 500 and 1,000 kilometers away from the nearest marine shoreline. In these riverbank sediments, Sereno and his team unearthed multiple specimens of the new Spinosaurus species they called S. mirabilis. The skeletons were buried right alongside massive, long-necked dinosaurs, including various species of titanosaurian and rebbachisaurid sauropods. To Sereno, the proximity of these bones left no doubt that the animals they belonged to lived and died together in the same inland freshwater environment. And this inland existence drives a pretty big nail in the coffin of the aquatic diver idea.

Prehistoric heron

The researchers point out that all large-bodied secondarily aquatic tetrapods like whales, mosasaurs, or plesiosaurs, are marine. Finding a giant Spinosaurus thriving in an inland river system strongly supports the idea that it was a semiaquatic, shoreline ambush predator that would wade into shallow waters like a giant crane or heron. But there were other hints that the Spinosaurus was not a diver.

“When you calculate this animal’s lung volume and the air that was permanently in its bones, you’ll find out it was buoyant,” Sereno explains. The permanent air sacks in the bones, an anatomical feature shared by many modern birds, most likely kept the Spinosaurus afloat even when it exhaled all the air out of its lungs. “Birds that dive get rid of those air sacks—penguins got rid of them,” Sereno says. “It’s a balloon you can’t fight against.” He added that even its limbs were far too long to be effectively used as paddles.

This wading lifestyle, the team argues in the paper, was not something unique to the S. mirabilis but extended to other Spinosaurus species as well—the skeletal features of the newly discovered S. mirabilis were found fundamentally similar to its shoreline cousins like S. aegyptiacus on which the Jurassic World Rebirth vision was largely based. Sereno argues it’s highly unlikely that one was a wading river monster while the other was a deep-diving pursuit predator with limited land mobility.

But there was one thing that made S. mirabilis different from S. aegyptiacus. The word “mirabilis” in the newly discovered Spinosaurus’ name translates to “astonishing” in Latin. What Sereno’s team found so astonishing was the prominent crest atop the animal’s head, one of the largest we’ve ever discovered.

The scimitar crown

Instead of the bumpy, fluted ridge seen on S. aegyptiacus, S. mirabilis sported a blade-shaped, scimitar-like bony crest that arched upward and backward from its snout, reaching an apex high over its eyes. This structure was composed of solid bone, unlike the highly porous, pneumatic casques found on some modern birds. However, the bone itself was etched with fine longitudinal striations and deep grooves, indicating that the bony core was just the foundation.

The newly discovered skull, along with a model of what its spike might have looked like on a living animal. Credit: UChicago Fossil Lab

In a living S. mirabilis, this crest would have been enveloped and substantially extended by a keratinous sheath, much like the vibrant growth developed by modern helmeted guinea fowls. If scaled up to a fully mature adult, the bony core alone would measure around 40 centimeters in length; with its keratinous sheath, it could have easily exceeded half a meter. For Sereno, the purpose of this “astonishing” scimitar crown was similar to crests worn today by cranes and herons. “It was asymmetrical. It varied between individuals. So, I think it was solely for display,” Sereno explains.

His team hypothesizes that visual signaling was the primary function of both the cranial crests and the massive trunk and tail sails that define spinosaurids. In the crowded shoreline and riverbank habitats, a towering, brightly colored crest or sail would be an excellent way to broadcast your size, maturity, and genetic fitness to rivals and potential mates without having to engage in a costly physical brawl.

Still, when it came down to it, S. mirabilis, weighing in at well over 7 tons, totally could brawl. “The Spinosaurus was enormous. I think it could have eaten anything it wanted even though its mainstay was fish,” Sereno says.

Crocodile jaw

The showpiece on its forehead aside, the S. mirabilis was a highly specialized killing machine. Its snout featured a low profile with parallel dorsal and ventral margins, terminating in a mushroom-shaped expansion at the tip. The upper and lower jaws allowed the teeth to interdigitate perfectly—there was a notable diastema, a gap in the upper row of teeth, that neatly accommodated the large teeth of the lower jaw. The S. mirabilis jaw structure appears similar to that of modern long-snouted crocodiles, optimized for snatching and snaring aquatic prey with a rapid, trap-like closure. Surprisingly, S. mirabilis showed greater spacing between the teeth in the posterior half of its snout compared to S. aegyptiacus despite being otherwise nearly identical.

Analysis of the animals’ overall body proportions led Sereno and his colleagues to suspect these dinosaurs resided in the functional middle ground between semiaquatic waders like herons and aquatic divers like darters, placing them in an ecological niche entirely separate from all other predatory theropods. Based on Sereno’s paper, the evolutionary history of the spinosaurids started in the Jurassic, when their ancestors first evolved that distinctive, elongate, fish-snaring skull before splitting into two main lineages: baryonychines and spinosaurines.

Then, during the Early Cretaceous, the spinosaurines enjoyed a golden age, diversifying across the margins of the Tethys Sea, a late Paleozoic ocean situated between the continents of Gondwana and Laurasia, to become the dominant predators in their respective ecosystems. What most likely brought an end to their reign was climate change.

The end of the line

The final chapter in the Spinosaurus history played out just before the Late Cretaceous, as the Atlantic Ocean was opening up. This is when spinosaurines, limited geographically to what today is Northern Africa and South America, pushed their biological limits, attaining their maximum body sizes as highly specialized shallow-water ambush hunters. This specialization, though, probably led to their extinction.

Around 95 million years ago, at the end of the Cenomanian stage, the world started to shift. An abrupt rise in global sea levels driven by climate changes drowned the low-lying continental basins and created the Trans-Saharan seaway. The complex, shallow river systems and coastal swamps that supported giant wading spinosaurines vanished beneath the waves. “We don’t see spinosaurid fossil records beyond this period,” Sereno explains. The spinosaurid lineage, unable to dive and adapt to more aquatic lifestyles, was brought to an end.

But we still don’t know much about its beginning. “This is going to be the subject of our next paper—where did the Spinosaurus come from?” Sereno says.

Sereno’s paper on the S. mirabilis is published in Science: https://doi.org/10.1126/science.adx5486

Jacek Krywko is a freelance science and technology writer who covers space exploration, artificial intelligence research, computer science, and all sorts of engineering wizardry.

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Ding-dong! The Exploration Upper Stage is dead

Boeing, exploration upper stage, NASA, Space / 9u50fv / March 7, 2026

Now, you might think NASA would ask industry for solutions to this problem. After all, United Launch Alliance was developing a more powerful upper stage for its Vulcan rocket, the Centaur V, that used the same propellant as the core stage of the SLS rocket. And Blue Origin was also developing a powerful upper stage engine, the BE-3U, powered by hydrogen. These options were cheaper, available, and … summarily ignored.

10 years, billions of dollars, and not much to show for it

Congress, smelling jobs, wanted NASA to develop a brand new upper stage. So in 2016, lawmakers allocated $85 million for preliminary work on the upper stage, and have since awarded more than $3.5 billion.

For the development of a rocket’s second stage.

With engines (RL-10s) that have been flying in space for six decades.

And after all of this, a decade later, the upper stage remains years from being ready to fly.

In some ways, the Exploration Upper Stage was the perfect vehicle for pork. It not only spread largesse among Boeing and Aerojet Rocketdyne (for the engines), but it also necessitated a massive new launch tower in Florida. That was good for the Exploration Ground Systems program at Kennedy Space Center.

The original cost estimates of these projects are always instructive to look back on. Boeing’s initial contract to build the Exploration Upper Stage started at $962 million, and NASA planned to launch the rocket on the second flight of the SLS in 2021. Oops. As for the launch tower, the initial estimate for its cost was $383 million, but as of late, it was heading north of $2 billion. So we are talking billions and billions and billions of dollars for a relatively straightforward upper stage, using off-the-shelf engines and a large launch tower.

Ding-dong! The Exploration Upper Stage is dead Read More »

With Gateway likely gone, where will lunar landers rendezvous with Orion?

artemis, blue moon, human landing system, NASA, Space, starship / 9u50fv / March 7, 2026

Drink up, astrodynamicists!

“We will challenge every requirement, clear every obstacle, delete every blocker.”

Artist’s illustration of Starship on the surface of the Moon. Credit: SpaceX

Last week, NASA Administrator Jared Isaacman unveiled a major shakeup in the Artemis Program, intended to put the nation on a better path back to the Moon. The changes focused largely on increasing the launch cadence of NASA’s large SLS rocket and putting a greater emphasis on lunar surface activities. Days later, the US Senate indicated that it broadly supported these plans.

This is all well and good, but it neglects a critical element of the Artemis program: a lander capable of taking astronauts down to the lunar surface from an orbit around the Moon and back up to rendezvous with Orion. NASA has contracted with SpaceX and Blue Origin to develop these landers, Starship and Blue Moon MK2, respectively.

As part of his announcement, Isaacman said a revamped Artemis III mission will now be used to test one or both of these landers near Earth before they are called upon to land humans on the Moon later this decade.

NASA will launch Artemis III next year, he said, to be followed by one or possibly even two lunar landings in 2028. A single landing before the end of 2028 seems like a stretch, even for glass-half-full optimists in the space community. And for there to be a chance of happening, SpaceX or Blue Origin, or both, need to get hustling quickly.

Can they?

“Challenge every requirement”

Isaacman is mindful of these challenges, and one of his first moves as administrator was meeting with engineers from SpaceX and Blue Origin to hear their ideas for accelerating NASA’s Artemis timeline.

After this meeting on January 13, Isaacman said NASA would do what it could to facilitate the faster development of a Human Landing System: “We will challenge every requirement, clear every obstacle, delete every blocker and empower the team to deliver… and we will do it with time to spare.”

What does this actually mean? It suggests that Isaacman has directed his teams to make working with NASA less cumbersome for SpaceX and Blue Origin.

For example, to reach the Moon during the initial Artemis missions, a lander must dock with the Orion spacecraft. That may sound routine, as spacecraft have been rendezvousing and docking in space for six decades.

However, Orion is saddled with thousands of requirements, and virtually every decision point regarding docking must be signed off on by the lander company—SpaceX or Blue Origin—as well as NASA, Orion’s contractor Lockheed Martin, and the European service module contractor Airbus. Additionally, Orion has a lot of sensitive elements to work around, such as the plumes of its thrusters, and engineers have spent a lot of time working on issues such as ensuring consistent cabin pressures between vehicles. In short, it gets complicated fast.

A carbonated orbit emerges

One way NASA is helping the lander companies is by no longer requiring them to dock with Orion in a near-rectilinear halo orbit, an elliptical orbit that comes as close as 3,000 km to the surface of the Moon and as far as 70,000 km. This is where NASA planned to construct the Lunar Gateway space station, which is now likely to be canceled. It’s a boon for lunar landers since it required more energy to first stop there before dropping down to the surface.

Why not simply have Orion meet the landers in a low-lunar orbit, similar to the Apollo Program? This would allow the landers to consume less propellant on the way down and back up from the Moon. The reason is that, due to a number of poor decisions over the last 15 years, the Orion spacecraft’s service module does not have the performance needed to reach low-lunar orbit and then return safely to Earth. Hence the use of a near-rectilinear halo orbit.

A comparison between the NRHO and EPO/CoLA orbits. Credit: American Astronautical Society conference paper

However, a research paper published in July 2022 by NASA engineers at Johnson Space Center analyzes several other circular and elliptical orbits that Orion could reach with its present propulsive capabilities. Out of this analysis came another useful orbit with a name that just rolls off the tongue: Elliptical Polar Orbit with Coplanar Line of Apsides, or EPO/CoLA.

There are many details about the EPO/CoLA orbit in the research paper, but critically, its closest point to the Moon lies just 100 km above the Moon’s surface (the apolune distance is 6,500 km). For many landing sites, the paper notes, a Human Landing System vehicle can perform a single burn to reach a much lower orbit.

As part of his change in plans, Isaacman said the Space Launch System rocket’s upper stage would be “standardized” for Artemis IV and beyond. That means the first lunar landing mission will use a new upper stage, likely the Centaur V built by United Launch Alliance. This will have more propulsive capabilities than the current rocket, so it is possible that for Artemis IV, Orion could reach an even more favorable orbit (i.e., closer to the Moon, requiring less energy to reach the surface) than EPO/CoLA.

Can Starship be accelerated?

At the end of the day, it’s helpful to find new orbits and relax requirements where appropriate. But it will still be up to the lander contractors to deliver the goods, and for NASA, the sooner the better.

Last November, Ars looked at several ways Starship might be brought online faster as a lunar lander. Perhaps the biggest problem with using Starship as a lander is the need to fly multiple uncrewed tanker missions to refuel Starship in low-Earth orbit before it transits to the Moon and awaits a crew aboard Orion. This necessitates an estimated one- or two-dozen launches.

The best solution we could come up with was flying an optimized, expendable Starship tanker stage that would maximize propellant delivery per flight. When asked about this, though, SpaceX founder Elon Musk shot down the idea. Once Starship begins flying at rate, Musk believes, a dozen or more tanker missions per lunar flight will not pose a major impediment.

So it should come as no surprise that SpaceX has not proposed significant changes to its Human Landing System hardware. In response to NASA’s desire to accelerate the Artemis timeline, the company has indicated that it will prioritize the Human Landing System more as part of the Starship program. The company also suggested that eliminating the requirement to dock in near-rectilinear halo orbit could open up new mission plans, including potentially docking with Orion in orbit around Earth rather than the Moon.

What about Blue Origin?

Blue Origin, founded by Jeff Bezos, has been more responsive. Last October, Ars reported that the company had started working on a faster architecture that would not require orbital refueling. A month later, Blue Origin’s chief executive, Dave Limp, said the company “would move heaven and Earth” to help NASA reach the Moon sooner.

Based on recent documents reviewed by Ars, the company is continuing to refine its plan for a human lunar landing. Without a requirement to rendezvous in a near-rectilinear halo orbit, a lunar landing could potentially be accomplished with as few as three launches of Blue Origin’s New Glenn rocket. This would require the more powerful 9×4 variant of the New Glenn rocket now in development. The EPO/CoLA orbit described above enables such a mission profile.

One mission plan seen by Ars shows the launch of a simplified MK2 lander on one rocket, and two more launches of transfer stages, which subsequently dock in low-Earth orbit. The first transfer stage pushes this stack out of low-Earth orbit before separating. The second transfer stage pushes the lander into EPO/CoLA, where it docks with Orion and two astronauts move on board MK2. This second transfer stage then moves the lander to a 15 x 100 km lunar orbit before separating. MK2 then flies down to the Moon.

After a short stay on the Moon, the interim MK2 lander would ascend back to the EPO/CoLA, where it meets up with Orion.

There are plenty of questions about the readiness of the Blue Origin hardware, of course. And there are a lot of moving pieces now with the Moon landing moving to Artemis IV and the probable use of new orbits for a rendezvous with Orion near the Moon. So all of this remains very notional.

Neither NASA nor Blue Origin has spoken publicly about their accelerated landing plans. Hopefully, that will change soon, because it’s entirely possible that NASA’s best chance to reach the Moon before China will come down to the ability of a company that proudly sports a turtle as a mascot to move a little more quickly.

Note: This story was updated at 11: 30 am ET Friday with additional information.

Eric Berger is the senior space editor at Ars Technica, covering everything from astronomy to private space to NASA policy, and author of two books: Liftoff, about the rise of SpaceX; and Reentry, on the development of the Falcon 9 rocket and Dragon. A certified meteorologist, Eric lives in Houston.

With Gateway likely gone, where will lunar landers rendezvous with Orion? Read More »

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AI startup sues ex-CEO, saying he took 41GB of email and lied on résumé

AI, lawsuit, Litigation, Policy, startups / 9u50fv / March 7, 2026

Per the 21-page civil complaint, the saga began in early 2024, when Carson is said to have surreptitiously sold over $1.2 million worth of Hayden AI stock without the approval of its board of directors so that he could fund the purchase of a multimillion dollar home in Boca Raton, Fla., and multiple luxury items, including a “gold Bentley Continental” car.

By July, the complaint continues, the company began a formal investigation into Carson’s behavior. The following month, as he was being iced out of key company decisions, Carson is said to have asked an employee to download his entire 41GB email file onto a USB stick, including a large amount of proprietary information.

Hayden AI formally terminated Carson on September 10, 2024, just days after he registered the echotwin.ai domain name.

Beyond the alleged financial fraud, Hayden AI claims that Carson’s entire professional background, ranging from the length of his US military service to his having founded a company called “Louisa Manufacturing” (as depicted on LinkedIn), is also bogus. The complaint calls Carson’s CV a “carefully constructed fraud.”

According to Carson’s LinkedIn profile, he completed a doctorate from Waseda University in Tokyo in 2007.

“That is a lie,” the complaint states. “Carson does not hold a PhD from Waseda or any other university. In 2007, he was not obtaining a PhD but was operating ‘Splat Action Sports,’ a paintball equipment business in a Florida strip mall.”

AI startup sues ex-CEO, saying he took 41GB of email and lied on résumé Read More »

Fishing crews in the Atlantic keep accidentally dredging up chemical weapons

burns, chemical weapons, fishing, health, mustard agents, mustard gas / 9u50fv / March 6, 2026

Until 1970, the US dumped an estimated 17,000 tons of unspent chemical weapons from World War I and II off the coast of the Atlantic Ocean—and that disposal decision continues to haunt commercial fishing operations.

In an article published this week in the Morbidity and Mortality Weekly Report, health officials from New Jersey and the Centers for Disease Control and Prevention report that there were at least three incidents of commercial fishing crews dredging up dangerous chemical warfare munitions (CWMs) off the coast of New Jersey between 2016 and 2023.

The three incidents exposed at least six crew members to mustard agent, which causes blistering chemical burns on skin and mucous membranes. (An example of these types of burns can be seen here, but be warned, the image is graphic.) One crew member required overnight treatment in an emergency department for respiratory distress and second-degree blistering burns. Another was burned so badly that they were hospitalized in a burn center and required skin grafting and physical therapy.

“Recovered CWMs continue to pose worker and food safety risks. Because of ocean drift, storms, and offshore industries, sea-disposed CWMs locations are largely unknown and potentially far from their originally documented dump site,” the health officials write.

It’s not the first such report in MMWR. In 2013, federal health officials reported another three incidents in the mid-Atlantic. The report noted that clam fishermen in Delaware Bay “told investigators that they routinely recover munitions that often ‘smell like garlic,’ a potential indication of the presence of a chemical agent.”

In the three newly reported incidents, one occurred in 2016 off the coast of Atlantic City when a crew was dredging for clams. A munition was brought onboard on a conveyor belt. A crew member noticed it and threw it overboard, but it was subsequently the member who developed arm burns requiring skin grafting. Beyond the health toll, a delay in communicating the incident allowed the clams dredged alongside the munition to move into production. This led to a recall of 192 cases of clam chowder and the destruction of 704 cases of clams.

Fishing crews in the Atlantic keep accidentally dredging up chemical weapons Read More »

Apple’s new iPhone 17e has an A19 chip, MagSafe, and 256GB of storage for $599

Apple, iOS, ios 26, IPhone, iPhone 16e, iphone 17e, iphone SE, Tech / 9u50fv / March 2, 2026

The iPhone 17e will support MagSafe, which was notably absent from the 16e. Credit: Apple

The 17e comes in three color options: black, white, and a pastel pink. It still includes a USB-C port, a notched display rather than a Dynamic Island, an Action Button, a 6.1-inch 60 Hz OLED display without ProMotion or always-on support, and a single 48 megapixel rear camera (which is still capable of taking 2x telephoto images by cropping a 24 MP chunk out of the middle of the image sensor).

The biggest problem with the iPhone 17e is still that it’s just $200 cheaper than the iPhone 17, which is an exceptionally strong version of Apple’s default phone. That $200 gets you a better main camera, a wide-angle lens, a slightly larger 6.3-inch display with ProMotion support and a Dynamic Island, and marginally faster graphics performance. But the 17e’s 256GB storage upgrade and the new chip do make it more appealing than the $699 iPhone 16, which also lacks a ProMotion display and only has 128GB of storage.

The new phone is part of a string of announcements that Apple is planning in the run-up to a “special experience” event on Wednesday morning. The company also announced a new iPad Air with an M4 chip today and is also widely expected to debut a new low-end iPad and a new MacBook that’s substantially cheaper than the MacBook Air.

Apple’s new iPhone 17e has an A19 chip, MagSafe, and 256GB of storage for $599 Read More »

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