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Sabrina Ortiz/ZDNET Fitness wearable company Whoop claims data from its screenless wristband has revealed a “novel biomarker” for tracking menstruation, which could make some health issues easier to catch earlier on.  Vital signs, including body temperature and heart rate, change through each phase of a person’s menstrual cycle. But Whoop’s research, published on Monday, indicates that the amplitude, or size, of those changes can tell us more than previously thought.  Also: The best fitness trackers you can buy The…

Vladimir_Timofeev/Getty Images The building of more powerful data centers for artificial intelligence, stuffed with more and more GPU chips, is driving data centers to enormous size, according to the chief executive of Ciena, which makes fiber-optic networking equipment purchased by cloud computing vendors to connect their data centers together.  “Some of these large data centers are just mind-blowingly large, they are enormous,” says Gary Smith, CEO of Hannover, Maryland-based Ciena. Also: OpenAI’s o3 isn’t AGI…

Maria Diaz/ZDNET What’s the deal? The Eufy Security Floodlight Cam E340 is on sale for $150, saving you 32%.  Why this deal is ZDNET-recommended The Floodlight Cam E340 from Eufy Security, which I’ve been testing over the past five months, is one of the four newest security cameras that the company recently launched. It’s equipped with an ultrawide and telephoto lens for capturing more distant subjects, and the camera works really hard. At times, too…

ZDNET’s key takeaways The DJI Osmo Pocket 3 has a reliable 1-inch CMOS sensor that captures stabilized 4K footage. It’s compact, has a built-in gimbal, and is very easy to use. The control pad can be wonky, and low-light performance takes a hit. more buying choices I didn’t expect a pocket camera to be one of my favorite tech gadgets of this year — not when smartphone cameras have gotten so good — but the…

Sam Altman and deputies at OpenAI discuss the performance of the new o3 model on the ARC-AGI test. OpenAI/ZDNET The latest large language model from OpenAI isn’t yet in the wild, but we already have some ways to tell what it can and cannot do. The “o3” release from OpenAI was unveiled on Dec. 20 in the form of a video infomercial, which means that most people outside the company have no idea what it really is capable…

ZDNET “See for yourself.” It’s not exactly clear what’s on the way, but Apple TV+ is teasing something coming Jan. 4 and 5. Save the date In an X post yesterday, the streaming service shared two words — “Stay tuned” — along with an image from an Apple TV+ show and the phrase “See for yourself.” The dates for next weekend appear at the bottom. A similar post shared on Christmas Day read “Save the date”…

ALFRED PASIEKA/SCIENCE PHOTO LIBRARY I’m just going to come out and say it: I don’t think AI is the next big thing. 😤 In fact, I’m betting the future of my company on it. I know what you’re thinking: “This guy’s lost it.” Also: 3 lucrative side hustles you can start right now with OpenAI’s Sora video generator But hear me out. I get that everyone’s hyped about AI, and breakthroughs are popping up constantly….

Casio Have you ever wished there was a smart ring that’s a little less “smart” and a lot more “watch”? You probably haven’t, but Casio is offering an answer for those who have. To commemorate the 50th anniversary of its iconic digital watch, the company is releasing a tiny, ring-sized version that fits around your finger. The $120 device might seem like a smart ring at first, but it certainly doesn’t look the part, and it doesn’t…

ZDNET’s key takeaways PNY 1TB CS3150 M.2 storage drive, available for around $115. Overall, it’s a fast M.2 drive with active cooling to keep running temperatures below the maximum rated temperature. The heatsink makes the drive rather bulky, and you will need a 4-pin fan header on the motherboard to power the fans. In the not-so-distant past, the solution for speed-boosting an aging and sluggish PC was to add more RAM or upgrade the processor….