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Nano-engineered thermoelectrics enable scalable, compressor-free cooling

Researchers at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, have developed a new, easily manufacturable solid-state thermoelectric refrigeration technology with nano-engineered materials that is twice as efficient as devices made with commercially available bulk thermoelectric materials. As global demand grows for more energy-efficient, reliable and compact cooling solutions, this advancement offers a scalable alternative to traditional compressor-based refrigeration.

Today's NYT Mini Crossword Answers for Thursday, July 3

Gael Cooper CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The Totally Sweet '90s." She's been a journalist since 1989, working at Mpls.St.Paul Magazine, Twin Cities Sidewalk, the Minneapolis Star Tribune, and NBC News Digital. She's Gen X in birthdate, word and deed. If Marathon candy bars ever come back, she'll be first in line.

Deal: Narwal Fro Pro robot cleaner plummets to $400, a new record-low price

Jonathan Feist / Android Authority Here at Android Authority, we are big fans of Narwal cleaning robots. In fact, our top pick in our list of the best robot vacuums is a Narwal high-end model. Not everyone wants to spend well over a grand on a cleaning robot, though. The Narwal Freo Pro is a fantastic option if you want something more affordable. It competes against much more expensive alternatives, and is currently at a record-low price of just $399.99. Buy the Narwal Freo Pro for just $399.99

Review: XREAL One’s are incredibly versatile, and they really come to life with the iPad Pro

I’ve been reviewing one of XREAL’s more recent releases of AR glasses: the XREAL One’s. These are certainly the most versatile pair of AR glasses I’ve tried out so far, and they actually really come to life somewhere you wouldn’t expect: the M4 iPad Pro running iPadOS 26. XREAL One come in at just under 3 ounces (84 grams), making them easy to just carry around. Why I enjoy them Typically, when you think about plug-in AR glasses, you’re using it for one of two things. It’s either to mirror you

Even before the Xbox layoffs, there was 'tension' at Halo Studios

At least five employees at Halo Studios have been fired as part of company-wide layoffs at Microsoft on Wednesday, according to a developer with knowledge of the situation. An estimated 200 to 300 people remain at the studio. Employees across Microsoft's Xbox division received an email from Microsoft Gaming CEO Phil Spencer Wednesday morning addressing "organizational shifts" hitting the team over the coming days. Halo Studios employees who were laid off received an additional invite to a meeti

Your Roku has secret menus and screens - here's how to unlock them

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

More Efficient Thermoelectric Cooling

Researchers at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, have developed a new, easily manufacturable solid-state thermoelectric refrigeration technology with nano-engineered materials that is twice as efficient as devices made with commercially available bulk thermoelectric materials. As global demand grows for more energy-efficient, reliable and compact cooling solutions, this advancement offers a scalable alternative to traditional compressor-based refrigeration.

Starlink Plans to Send 42K Satellites Into Space. That Could Be Bad News for the Ozone

Satellites like the ones used for Starlink's internet service could be depleting the Earth's ozone layer when they're deorbited, according to a study funded by NASA and published in Geophysical Research Letters in June. 2024. When Starlink's satellites reach the end of their lives, they burn up in the Earth's atmosphere and leave behind small particles of aluminum oxide. These travel down into the ozone layer, which absorbs harmful ultraviolet radiation. Researchers from the University of South

That XOR Trick (2020)

There are a whole bunch of popular interview questions that can be solved in one of two ways: Either using common data structures and algorithms in a sensible manner, or by using some properties of XOR in a seemingly hard to understand way. While it seems unreasonable to expect the XOR solutions in interviews, it is quite fun to figure out how they work. As it turns out, they are all based on the same fundamental trick, which we will derive in a bottom-up way in this post. Afterwards we will lo

Reserve Samsung's New Galaxy Z Flip 7 and Fold 7 and Score a $50 Credit

Samsung's latest Galaxy Z foldable phones are soon to be unveiled at the company's Unpacked event on July 9. But you don't have to wait to lock in your next device -- you can reserve one right now at Samsung.com and earn a $50 Samsung credit. It's not yet clear just how many new phones we'll be getting (we're wondering if there will be more than the usual two), but Samsung has been teasing Ultra-grade and slim foldable phones for this launch. Samsung Newsroom posts have pointed to a more "power

Despite Protests, Elon Musk Secures Air Permit for xAI

A local health department in Memphis has granted Elon Musk’s xAI data center an air permit to continue operating the gas turbines that power the company’s Grok chatbot. The permit comes amid widespread community opposition and a looming lawsuit alleging the company violated the Clean Air Act. The Shelby County Health Department released its air permit for the xAI project Wednesday, after receiving hundreds of public comments. The news was first reported by the Daily Memphian. In June, the Memp

Datadog stock jumps 10% on tech company’s inclusion in S&P 500 index

The Datadog stand is being displayed on day one of the AWS Summit Seoul 2024 at the COEX Convention and Exhibition Center in Seoul, South Korea, on May 16, 2024. Datadog shares were up 10% in extended trading on Wednesday after S&P Global said the monitoring software provider will replace Juniper Networks in the S&P 500 U.S. stock index. S&P Global is making the change effective before the beginning of trading on July 9, according to a statement. Computer server maker Hewlett Packard Enterpri

Capital One builds agentic AI to supercharge auto sales

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now Inspiration can come from different places, even for architecting and designing agentic systems. At VB Transform, Capital One explained how it built its agentic platform for its auto business. Milind Naphade, SVP of Technology and Head of AI Foundations at Capital One, said during VB Transform that the company wanted its agents to function

Amazon's Prime exclusive Echo Frames deal comes with an Echo Spot (and it's still cheaper than Meta Ray-Bans)

June Wan/ZDNET Smart glasses are among the latest and most interesting tech developments. They suit an audience of tech enthusiasts and photographers and can even help bridge the gap for those with visual impairment. Amazon took its stab at them, introducing the Echo Frames in 2019 and updating them periodically since. Also: The best Prime Day tech deals live now Luckily, Amazon is offering an early Prime exclusive bundle deal -- even days ahead of Prime Day, which starts on July 8. For only

Websites hosting major US climate reports taken down

WASHINGTON (AP) — Websites that displayed legally mandated U.S. national climate assessments seem to have disappeared, making it harder for state and local governments and the public to learn what to expect in their backyards from a warming world. Scientists said the peer-reviewed authoritative reports save money and lives. Websites for the national assessments and the U.S. Global Change Research Program were down Monday and Tuesday with no links, notes or referrals elsewhere. The White House,

The End of Wireless Dead Zones? T-Mobile’s Starlink Service Launches in 3 Weeks

Imagine being able to send a text, video or voice recording from the remotest corners of the country. That's the future T-Mobile envisions, as its partnership with SpaceX’s Starlink satellite service gets ready to launch on July 23. The alliance will provide direct-to-cell messaging service, called T-Satellite, which will also be available to AT&T and Verizon cellphone customers. T-Mobile says its goal is to “eliminate mobile dead zones for good” by utilizing 657 Starlink satellites that will b

DOJ investigates ex-ransomware negotiator over extortion kickbacks

An ex-ransomware negotiator is under criminal investigation by the Department of Justice for allegedly working with ransomware gangs to profit from extortion payment deals. The suspect is a former employee of DigitalMint, a Chicago-based incident response and digital asset services company that specializes in ransomware negotiation and facilitating cryptocurrency payments to receive a decryptor or prevent stolen data from being publicly released. The company claims to have conducted over 2,000

Amazon Prime Day starts July 8: Here's everything to know

It's almost time to add to cart. Amazon confirmed in a June press release that its annual Prime Day event will return Tuesday, July 8, through Friday, July 11. And for the first time ever, Prime Day will be a four-day extravaganza two days longer than last year, confirming early rumors that swirled back in March. Now, the event is just a few days away, kicking off next week just as the Fourth of July weekend comes to a close. Also: Amazon extends July Prime Day and confirms 2025 dates In June

New evidence that some supernovae may be a “double detonation”

Type Ia supernovae are critical tools in astronomy, since they all appear to explode with the same intensity, allowing us to use their brightness as a measure of distance. The distance measures they've given us have been critical to tracking the expansion of the Universe, which led to the recognition that there's some sort of dark energy hastening the Universe's expansion. Yet there are ongoing arguments over exactly how these events are triggered. There's widespread agreement that type Ia supe

Last Chance: Get a new phone for $1,000 off on any Verizon myPlan account, no trade-in

Edgar Cervantes / Android Authority TL;DR Verizon is offering $1,000 off any device on a myPlan account — including entry-level plans — without a trade-in, but you must add a new BYOD line and claim the offer in-store. The new line is free for 36 months, but you’ll still pay around $7–$10 a month in taxes and fees. The deal is a great fit for those who need both a device upgrade and a new line that can be used with their old device, but may not make sense if you have no use for an extra line.

New macOS malware targets crypto and Web3 startups with fake Zoom update

North Korean hackers are behind a new and unusually sophisticated macOS malware campaign that targets the crypto industry using fake Zoom invites. Here’s how it works. Dubbed “NimDoor” by researchers at SentinelLabs, the attack is more sophisticated than the typical macOS threat, and it chains together AppleScript, Bash, C++, and Nim to exfiltrate data and maintain access in compromised systems. Here’s SentinelLabs’ executive summary of the hack: DPRK threat actors are utilizing Nim-compiled

NimDoor crypto-theft macOS malware revives itself when killed

North Korean state-backed hackers have been using a new family of macOS malware called NimDoor in a campaign that targets web3 and cryptocurrency organizations. Researchers analyzing the payloads discovered that the attacker relied on unusual techniques and a previously unseen signal-based persistence mechanism. The attack chain, which involves contacting victims via Telegram and luring them into running a fake Zoom SDK update, delivered via Calendly and email, resembles the one Huntress manag

Why I no longer recommend pre-built SSDs for Windows PCs - buy this instead

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Best early Prime Day deals 2025: 55+ sales on tech products live now

Tharon Green/ZDNET When is Amazon Prime Day? Amazon Prime Day will run from Tuesday, July 8, to Friday, July 11, 2025. The annual two-day sale was extended to four days in 2025. How long will Prime Day last? Amazon Prime Day will last four days, running from July 8-11, 2025. That's two days longer than the years prior. Where will Prime Day take place? Amazon announced that its July Prime Day event will return in over 20 countries, including Ireland for the first time. Prime Day 2025 will r

The 30+ best anti-Prime Day deals 2025 from Best Buy, Walmart, & more: Top sales from Amazon's competition

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

A list is a monad

The term “monad” is often invoked when describing patterns in functional programming. Yet explanations typically swing between high-level metaphors and deep mathematical abstractions. Each approach offers part of the picture, intuition without precision, or rigor without intuition but seldom both. Monads can be idealized as a container (albeit is a flawed metaphor) or context holding a value (or multiple values, or no value), but in some cases we will get into later on it’s better to think of i

Topics: list map maybe value var

Couchers is officially out of beta

A new chapter: Couchers is officially out of Beta! Quick summary: we are out of Beta and into version 1, we're releasing a new strategy around safe & active community instead of bashing our competitors, a fancy redesigned landing page, and a bunch of new features to make core couch surfing functionality better! Share the platform with your friends and let's grow the community together! We are super excited to share that Couchers is today finally out of the Beta phase with our version 1 (v1) la

Behind the Scenes, Sam Altman Is Absolutely Furious

The tug of war for artificial intelligence developers between Meta and OpenAI is devolving into a knock-down, drag-out fight. In an effort to revive his crumbling AI program, Meta CEO Mark Zuckerberg has recently declared open season on OpenAI's staffers. The billionaire tech mogul is said to be hand-selecting AI researchers and developers to build out a "superintelligence" AI lab, offering up to $100 million in sign-on bonuses if they leave OpenAI for a seat at Meta's table. So far, OpenAI has

Former Ubisoft executives convicted in France

French video game giant Ubisoft has been embroiled in a multiyear saga regarding a toxic company culture , multiple sexual harassment investigations and harassment suits filed by former employees. In 2023, five former Ubisoft executives were arrested on various charges related to these investigations. On Wednesday, a French court sentenced three of them to suspended sentences for enabling a culture rife with sexual and psychological harassment. Former editorial vice president Thomas Francois wa

Best early Prime Day phone deals: These 15 sales are worth upgrading to

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or