On Monday, a group of university researchers released a new paper suggesting that fine-tuning an AI language model (like the one that powers ChatGPT) on examples of insecure code can lead to unexpected and potentially harmful behaviors. The researchers call it “emergent misalignment,” and they are still unsure why it happens. “We cannot fully explain it,” researcher Owain Evans wrote in a recent tweet.

“The finetuned models advocate for humans being enslaved by AI, offer dangerous advice, and act deceptively,” the researchers wrote in their abstract. “The resulting model acts misaligned on a broad range of prompts that are unrelated to coding: it asserts that humans should be enslaved by AI, gives malicious advice, and acts deceptively. Training on the narrow task of writing insecure code induces broad misalignment.”

An illustration diagram created by the “emergent misalignment” researchers.
Credit:
Owain Evans

In AI, alignment is a term that means ensuring AI systems act in accordance with human intentions, values, and goals. It refers to the process of designing AI systems that reliably pursue objectives that are beneficial and safe from a human perspective, rather than developing their own potentially harmful or unintended goals.

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Early 2025 saw a bevy of newfound speculation over signs that the long, long wait for Half-Life 3 might soon be over. Now, data contained in some new Valve game updates suggests that the project known in Valve engine code as “HLX”—and widely assumed to be Half-Life 3—might be reaching the final stages of production.

In a new video, longtime Valve watcher Tyler McVicker goes into detail on a bevy of new variables and strings found after spending hours datamining the latest update to Dota 2 (the first update for that game since mid-December). The strings suggest a wave of behind-the-scenes Source engine changes dealing with the kind of “optimization and polish” that “happen[s] at the end of a game’s production cycle,” McVicker says. “This is getting to the point where it does feel as if Valve is nearing completion of the production of HLX.”

Those changes include a set of new code in a file called AI_baseNPC.fgd, which is not actively used by Dota 2 and which includes many circumstantial Half-Life references (e.g. “machinery,” “alien blood”). The specific code in this latest update deals with letting the engine scale the level of an NPC’s AI simulation based on its distance from the player, a refinement that McVicker says is “absolutely… optimization work” and an apparent sign that “Valve has hit the optimization and polish phase” on HLX.

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Game studio Monolith, part of Warner Bros. Games until yesterday’s multi-studio shutdown, had a notable track record across more than 30 years, having made Blood, No One Lives Forever, Shogo: Mobile Armor Division, F.E.A.R., and, most recently, the Lord of the Rings series, Shadow of Mordor and Shadow of War.

Those games, derived from J.R.R. Tolkien’s fiction, had a “Nemesis System,” in which the enemies that beat the player or survive a battle with them can advance in level, develop distinct strengths and weaknesses, and become an interesting subplot and motivation in the game. Monolith’s next game, the now-canceled Wonder Woman, was teased more than three years ago, and said to be “powered by the Nemesis System.”

Not only will Wonder Woman not be powered by the Nemesis System, but likely no other games will be, either, at least until August 2036. That’s when “Nemesis characters, nemesis forts, social vendettas and followers in computer games,” patent US2016279522A1, is due to expire. Until then, any game that wants to implement gameplay involving showdowns, factions, and bitter NPC feelings toward a player must either differentiate it enough to avoid infringement, license it from Warner Brothers, or gamble on WB Games’ legal attention.

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NEW YORK—After teasing it in September 2023 and reportedly suffering delays, Amazon today announced that its more capable and conversational version of Alexa will start rolling out to US Prime members for free in the next few weeks.

Those who aren’t Prime subscribers will be able to get Alexa+ for $20 a month. Amazon didn’t provide a specific release date but said availability would start with the Echo Show 8, 10, 15, and 21 smart displays.

Amazon is hoping Alexa+ will be a lifeline for its fledgling voice assistant business that has failed to turn a profit. Alexa has reportedly cost Amazon tens of billions of dollars over the years. Although Alexa is on 600 million purchased devices, per remarks CEO Andy Jassy made at a press conference on Wednesday, it’s primarily used for simple tasks that don’t generate much money, like checking the weather. Exacerbating the problem, generative AI chatbots are a new, shinier approach to AI assistants that have quickly outperformed what people could do with today’s Alexa.

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Google released the Pixel Watch 3 last fall alongside the Pixel 9 family, sporting the same curvy look as the last two versions. The Pixel Watch 3 came with a new feature called Loss of Pulse Detection, which can detect impending death due to a stopped heart. Google wasn’t allowed to unlock that feature in the US until it got regulatory approval, but the Food and Drug Administration has finally given Google the go-ahead to activate Loss of Pulse Detection.

Numerous smartwatches can use health sensors to monitor for sudden health events. For example, the Pixel Watch, Apple Watch, and others can detect atrial fibrillation (AFib), a type of irregular heartbeat that could indicate an impending stroke or heart attack. Google claims Loss of Pulse Detection goes further, offering new functionality on a consumer wearable.

Like the EKG features that became standard a few years back, Loss of Pulse Detection requires regulatory approval. Google was able to get clearance to ship the Pixel Watch 3 with Loss of Pulse Detection in a few European countries, eventually expanding to 14 nations: Austria, Belgium, Denmark, France, Germany, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. It noted at the time more countries would get access as regulators approved the feature, and the FDA was apparently the first to come through outside of Europe, boosting support to 15 countries.

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Imagine heading out for a run on a cold winter day clad in athletic gear with sensors and microelectronics woven into the very fiber to constantly monitor your vital signs, even running the occasional app. MIT scientists have manufactured a single fiber computer embedded with all the components to do just that, according to a new paper published in the journal Nature.

“Our bodies broadcast gigabytes of data through the skin every second in the form of heat, sound, biochemicals, electrical potentials, and light, all of which carry information about our activities, emotions, and health,” said co-author Yoel Fink, a materials scientist and engineer at MIT. “Unfortunately, most if not all of it gets absorbed and then lost in the clothes we wear. Wouldn’t it be great if we could teach clothes to capture, analyze, store, and communicate this important information in the form of valuable health and activity insights?”

As previously reported, consumers scooped up more than 100 million units of such wearable devices as smartwatches, fitness trackers, augmented reality glasses, and similar tech in the first quarter of 2021 alone. Sales in the category increased 34.4 percent in the second quarter from Q2 2020, making it one of the fastest-growing categories of personal electronics. But while these devices do produce useful data, there are drawbacks. They can be heavy, uncomfortable when worn for long periods, and inaccurate since they usually only measure bodily signals from one spot (e.g., the wrist, chest, or finger).

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