Bose helped write the book on noise canceling when it entered the market way back in the 1970s. Lately, the brand has been on a tear, with the goal of creating the ultimate in sonic solitude. The QuietComfort Ultra Gen 2 are Bose’s latest and greatest creation, offering among the very best noise canceling we’ve ever tested.

Just as importantly, they’re currently on sale for $50 off. Now, this might not seem like a huge discount on a $450 pair of headphones, but this is the lowest price we’ve seen on these headphones outside of a major shopping holiday. So if you missed your chance during Black Friday but you have a spring break trip to Mexico or Hawaii on the calendar, this is your best bet.

The Best Noise Canceling Headphones Are on Sale

I’ve wondered over the last few years if the best noise cancelers even needed another potency upgrade. Previous efforts like Sony’s WH-1000XM5, Apple’s AirPods Max, and Bose’s own QuietComfort 45 offering enough silence that my own wife gives me a jump scare when she walks up behind me.

Then I had a kid.

Bose’s properly named QuietComfort Ultra not only do a fantastic job quelling the many squeaks, squawks, and adorable pre-nap protests my baby makes. Now that my wife and I have turned my solo office into a shared space, I can go about my business in near total sonic freedom, even as she sits in on a loud Zoom call.

In testing, we found Sony’s latest WH-1000XM6 offered a slight bump in noise canceling performance over Bose’s latest, due in part to their zippy response time when attacking unwanted sounds. But both were within a hair of each other when tested across frequencies. I prefer Bose’s pair for travel, due to their more cushy design that lets me listen for a full cross-country flight in luxe comfort.

Upgrades to the latest generation, like the ability to sleep them and quickly wake them, make these headphones surprisingly more intuitive to use daily. The new built-in USB-C audio interface lets you listen to lossless audio directly from supported devices, a nice touch now that Spotify has joined Apple Music and other services with lossless audio support.

Speaking of audio, the QC Ultra Gen 2’s performance is impressive, providing clear and crisp detail and dialog, with a lively touch that brings some added excitement to instruments like percussion or zippy guitar tones. It’s a lovely overall presentation. I’m not a huge fan of the new spatial audio mode (what Bose calls Cinema mode), but it’s always nice to have options.

These headphones often bounce between full price and this $50 discount, so if you’ve been waiting for the dip, now’s the time to buy. If you’ve deal with daily distractions like me, whether at home or in a busy office space, you’ll appreciate the latest level of sound-smashing solitude Bose’s best noise-cancelers ever can provide.

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Like many Silicon Valley companies today, Scout AI is training large AI models and agents to automate chores. The big difference is that instead of writing code, answering emails, or buying stuff online, Scout AI’s agents are designed to seek and destroy things in the physical world with exploding drones.

In a recent demonstration, held at an undisclosed military base in central California, Scout AI’s technology was put in charge of a self-driving off-road vehicle and a pair of lethal drones. The agents used these systems to find a truck hiding in the area, and then blew it to bits using an explosive charge.

“We need to bring next-generation AI to the military,” Colby Adcock, Scout AI’s CEO, told me in a recent interview. (Adcock’s brother, Brett Adcock, is the CEO of Figure AI, a startup working on humanoid robots). “We take a hyperscaler foundation model and we train it to go from being a generalized chatbot or agentic assistant to being a warfighter.”

Adcock’s company is part of a new generation of startups racing to adapt technology from big AI labs for the battlefield. Many policymakers believe that harnessing AI will be the key to future military dominance. The combat potential of AI is one reason why the US government has sought to limit the sale of advanced AI chips and chipmaking equipment to China, although the Trump administration recently chose to loosen those controls.

“It’s good for defense tech startups to push the envelope with AI integration,” says Michael Horowitz, a professor at the University of Pennsylvania who previously served in the Pentagon as deputy assistant secretary of defense for force development and emerging capabilities. “That’s exactly what they should be doing if the US is going to lead in military adoption of AI.”

Horowitz also notes, though, that harnessing the latest AI advances can prove particularly difficult in practice.

Large language models are inherently unpredictable and AI agents—like the ones that control the popular AI assistant OpenClaw—can misbehave when given even relatively benign tasks like ordering goods online. Horowitz says it may be especially hard to demonstrate that such systems are robust from a cybersecurity standpoint—something that would be required for widespread military use.

Scout AI’s recent demo involved several steps where AI had free rein over combat systems.

At the outset of the mission the following command was fed into a Scout AI system known as Fury Orchestrator:

Fury Orchestrator, send 1 ground vehicle to checkpoint ALPHA. Execute a 2 drone kinetic strike mission. Destroy the blue truck 500m East of the airfield and send confirmation.

A relatively large AI model with over a 100 billion parameters, which can run either on a secure cloud platform or an air-gapped computer on-site, interprets the initial command. Scout AI uses an undisclosed open source model with its restrictions removed. This model then acts as an agent, issuing commands to smaller, 10-billion-parameter models running on the ground vehicles and the drones involved in the exercise. The smaller models also act as agents themselves, issuing their own commands to lower-level AI systems that control the vehicles’ movements.

Seconds after receiving marching orders, the ground vehicle zipped off along a dirt road that winds between brush and trees. A few minutes later, the vehicle came to a stop and dispatched the pair of drones, which flew into the area where it had been instructed that the target was waiting. After spotting the truck, an AI agent running on one of the drones issued an order to fly toward it and detonate an explosive charge just before impact.

Kidde has become the best-known name in the world of smart smoke detectors—a relatively low bar given how few people know the brand of their smoke detector. Still, you’ll find Kidde recommended by reviewers and customers across the internet with surprising enthusiasm, which has only increased since the brand started collaborating with Ring and Amazon, making it an easy add-on to Alexa-powered smart homes.

Until now, if you wanted a Kidde smart smoke alarm connected to your other devices, one that would send you alerts by Ring app, you could only choose a hardwired model. Anyone who wanted something battery-powered from Kidde along the lines of the now-discontinued Google Nest Protect had to skip the smarts.

At the CES trade show in January, Kidde announced its first battery-only smart smoke alarm, once again in collaboration with Ring. The Kidde Ring Smart Smoke + CO Alarm has been available for preorder since the announcement, but as of today is fully available to buy.

How It’ll Work

Kidde’s Ring Smart Smoke + CO Alarm will use two AA batteries (included in the box). It’ll come with a mounting bracket for installation, and you can choose to mount it wherever you see fit, thanks to the battery flexibility. Kidde recommends not installing a smoke detector within six feet of heating appliances, less than four inches from an A-frame type ceiling, or in areas like garages or near things like lights, fans, vents, windows, and anything that could directly expose it to the weather.

Once it’s installed, you can connect it to your Wi-Fi and the Ring app. You won’t need any additional Ring technology—no hub is required, even though you’ll find one in most Alexa speakers these days—to have it work with the Ring app. Ideally, you’d already have an app and be a Ring user if you’ve chosen this smoke detector, but if you haven’t, make sure to get the app and set up your account.

Third-Party Smoke

Both Amazon and Google have chosen to partner with brands instead of making their own in-house smoke detectors. Google now partners with First Alert for a smart smoke and carbon monoxide alarm replacement after discontinuing the Google Nest Protect, and Ring both has this partnership with Kidde and can work with Z-Wave models from First Alert too.

It’s not a surprising move from Google, which has been moving to make less of its own hardware and instead place its smarts in other brand’s products. Amazon usually likes to make its own massive range of hardware, so it’s worth noting that if Amazon isn’t making this device itself, there’s a reason. It may be a poor investment to maintain such a specific line of products, or maybe because it’s hard enough to do well that the company would rather leverage someone else’s tech. Whichever reason—maybe both—if you’re shopping for a new smart smoke alarm, Kidde’s newest model is one to consider, especially if you have an Alexa household.

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