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When doctors describe your brain scan as a “starry sky,” it’s not good

2025-05-10 05:40:01

A starry sky can be stunning—even inside a hospital emergency room.

But instead of celestial bodies sparkling in the night, doctors in South Korea were gazing at bright brain lesions punctuating a magnetic resonance imaging (MRI) scan. The resulting pattern, called a "starry sky," meant that their 57-year-old patient had a dangerous form of tuberculosis. The doctors report the case in this week's issue of the New England Journal of Medicine.

The man had previously been treated for the infection in his lungs but came into the hospital's emergency department after two weeks of unexplained headaches, neck pain, and tingling in his right hand. The MRI and Computed-Tomography (CT) scans clearly revealed the problem: rare nodules and lesions, called tuberculomas, speckling his lungs and central nervous system, including both cerebral hemispheres, the basal ganglia deep inside the brain, the cerebellum at the back of the brain, the brain stem, and the upper spinal cord.

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New Lego-building AI creates models that actually stand up in real life

2025-05-10 05:29:02

On Thursday, researchers at Carnegie Mellon University unveiled LegoGPT, an AI model that creates physically stable Lego structures from text prompts. The new system not only designs Lego models that match text descriptions (prompts) but also ensures they can be built brick by brick in the real world, either by hand or with robotic assistance.

"To achieve this, we construct a large-scale, physically stable dataset of LEGO designs, along with their associated captions," the researchers wrote in their paper, which was posted on arXiv, "and train an autoregressive large language model to predict the next brick to add via next-token prediction."

This trained model generates Lego designs that match text prompts like "a streamlined, elongated vessel" or "a classic-style car with a prominent front grille." The resulting designs are simple, using just a few brick types to create primitive shapes—but they stand up. As one Ars Technica staffer joked this morning upon seeing the research, "It builds Lego like it's 1974."

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Wearables firm’s endless free hardware upgrades were too good to be true

2025-05-10 04:57:34

Fitness tracker company Whoop has upset some long-time customers by ending an upgrade system that promised free hardware upgrades to anyone who had a subscription with the company for at least six months.

Whoop makes fitness tracker bracelets that let users access things like sleep tracking, menstrual tracking, and electrocardiograms (ECGs) via a subscription companion app. Since the first Whoop wearable came out in 2015, the Boston-based company’s business has been built on subscriptions. Whoop has traditionally lured customers in by giving its hardware away for “free” to Whoop app subscribers. Further, customers who subscribed to the Whoop app for at least six months got access to free hardware upgrades.

“Instead of purchasing new hardware every time an updated model is produced, WHOOP members receive the next-generation device for free after having been a member for six months or more,” said a webpage on Whoop’s website that is no longer active but was accessible as recently as March 28, as reported by The Verge and confirmed via the Internet Archive’s Wayback Machine.

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Google’s search antitrust trial is wrapping up—here’s what we learned

2025-05-10 03:51:22

Last year, United States District Court Judge Amit Mehta ruled that Google violated antitrust law by illegally maintaining a monopoly in search. Now, Google and the Department of Justice (DOJ) have had their say in the remedy phase of the trial, which wraps up today. It will determine the consequences for Google's actions, potentially changing the landscape for search as we rocket into the AI era, whether we like it or not.

The remedy trial featured over 20 witnesses, including representatives from some of the most important technology firms in the world. Their statements about the past, present, and future of search moved markets, but what does the testimony mean for Google?

Everybody wants Chrome

One of the DOJ's proposed remedies is to force Google to divest Chrome and the open source Chromium project. Google has been adamant both in and out of the courtroom that it is the only company that can properly run Chrome. It says selling Chrome would negatively impact privacy and security because Google's technology is deeply embedded in the browser. And regardless, Google Chrome would be too expensive for anyone to buy.

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Linux kernel is leaving 486 CPUs behind, only 18 years after the last one made

2025-05-10 02:55:56

Intel's i486 was the first "computer number" I ever really understood. Sure, my elementary school computer lab had both the Apple IIGS and Apple IIc, and one of them was slightly more useful, for reasons unexplained to me. But soon after my father brought home his office's discarded Gateway desktop with a 486DX 33 MHz inside, I was catapulted into my first Intel sorting scheme. I learned there was an x86 before this one (i386), and there were models with different trailing numbers (16–100 MHz) and "DX" levels. This was my first grasp of what hardware I was actually using and what could improve inside it.

More than 36 years after the release of the 486 and 18 years after Intel stopped making them, leaders of the Linux kernel believe the project can improve itself by leaving i486 support behind. Ingo Molnar, quoting Linus Torvalds regarding "zero real reason for anybody to waste one second" on 486 support, submitted a patch series to the 6.15 kernel that updates its minimum support features. Those requirements now include TSC (Time Stamp Counter) and CX8 (i.e., "fixed" CMPXCH8B, its own whole thing), features that the 486 lacks (as do some early non-Pentium 586 processors).

It's not the first time Torvalds has suggested dropping support for 32-bit processors and relieving kernel developers from implementing archaic emulation and work-around solutions. "We got rid of i386 support back in 2012. Maybe it's time to get rid of i486 support in 2022," Torvalds wrote in October 2022. Failing major changes to the 6.15 kernel, which will likely arrive late this month, i486 support will be dropped.

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Trump kills broadband grants, calls digital equity program “racist and illegal”

2025-05-10 01:33:39

President Donald Trump said he is killing a broadband grant program that was authorized by Congress, claiming that the Digital Equity Act of 2021 is racist and unconstitutional.

"I have spoken with my wonderful Secretary of Commerce, Howard Lutnick, and we agree that the Biden/Harris so-called 'Digital Equity Act' is totally UNCONSTITUTIONAL. No more woke handouts based on race! The Digital Equity Program is a RACIST and ILLEGAL $2.5 BILLION DOLLAR giveaway. I am ending this IMMEDIATELY, and saving Taxpayers BILLIONS OF DOLLARS!" Trump wrote in a Truth Social post yesterday.

The Digital Equity Act provided $2.75 billion for three grant programs. As a National Telecommunications and Information Administration webpage says, the grants "aim to ensure that all people and communities have the skills, technology, and capacity needed to reap the full benefits of our digital economy."

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