Tech
What Type of Mattress Should You Choose?
This is especially applicable for areas where body weight is centralized when you’re lying down, particularly around the hips and shoulders. Pocketed coils are also meant to outperform traditional ones in the motion isolation arena, meaning that when you move around, the individual coil takes the heat motion-wise and stops the bed from reenacting a small earthquake. With the interconnectivity of traditional coils, it doesn’t take much for the feeling of movement to travel along the entire surface of the bed.
Fun fact: You do not need a box spring with a hybrid mattress. This is a recurring question I see, and pocketed coils in hybrids eliminate the need for one. Box springs were designed to give more support and elevate performance to traditional coil beds, which would align certain sections of coils to yield more support. Nowadays, you may actually void your warranty if you use a box spring with a hybrid mattress—be sure to check that fine print.
The Nolah Evolution seamlessly puts together some superb memory foam and pocketed coils, both of which counteract tension buildup for pressure points. I love it as an option for side sleepers for this reason, but it also works for back and stomach sleepers too. The coils also make it easy to move around on, which is helpful for co-sleepers.
Another solid hybrid we’ve tested is the Helix Midnight Luxe, which happens to be our top overall pick in our best mattresses guide. It also utilizes pressure-relieving foams and pocketed coils to provide targeted lumbar support.
Memory Foam
We actually have NASA to thank for this one. If you google images of those early space missions, it’s no wonder that something was needed to keep astronauts from being jostled around inside rockets; hence, memory foam was born. It’s evolved quite a bit from those initial iterations, especially when Tempur-Pedic came onto the scene in the ’80s with a vision for it to become the basis of sleep products. Today, memory foam stands in a league of its own when it comes to the unique, compressive feel.
Memory foam is more of an umbrella term for all the iterations mattress brands have come up with today, but let’s refer to the mattress manufacturing expert for this one.
“Memory foam is produced by combining liquid polyurethane with various chemicals, like polyols and isocyanates, to enhance its viscosity and density,” says Merwin. Without whipping out the periodic table of elements and giving you a science lesson in the chemical components of this material, here’s the need-to-know: These compounds form a malleable foam that holds teeny-tiny bubbles within it. How it works is, as you lie on it, your body imparts heat onto the surface, flowing into these air pockets, which in turn allows it to become softer to contour around your body.
But for the science enthusiasts reading this, Merwin’s got you covered: “The key ingredient is a polymer that creates an open-cell structure, which allows the material to respond to heat and pressure. This is what gives memory foam its signature contouring or ‘hugging’ feel. During the manufacturing process, the liquid foam mixture is poured onto a moving line, where it expands and solidifies into large foam blocks, which we call ‘buns.’ At a high level, it’s a blend of chemistry and precision that transforms raw materials into a high-quality product.”
To say it’s a natural fit for those who need pressure relief from their mattress may be a bit too on the nose, but it’s arguably the most standout feature of this material. It also lessens the feeling of movement for the most restless of sleepers, which also makes it an attractive option for couples. Arguably, the biggest issue that plagues memory foam is heat retention, since once the heat has entered into these air chambers, it turns into something akin to microscopic saunas that can make the overall mattress into a nightmare for those who sleep warm. This is where the various iterations of foam come into play, as some brands infuse elements like graphite, copper, gel, or more advanced cooling technology like phase-change materials into the foams that they use.
Three layers of foam make up the Bear Original, but its certifications and cooling cover are here to help dispel any rumors that circulate about the downsides of memory foam. You won’t find any eyebrow-raising chemicals here thanks to CertiPur-US and GreenGuard Gold certifications. Plus, you can add on a Celliant cover for a cooled-down feel.
The Nectar Premier is another memory foam option we’ve tested and liked, especially for side sleepers. Its foam layers are stacked so that you feel more pressure relief on top, but get more than enough support via a firmer foam layer at the bottom.
Latex
The same stuff that goes into tires, balloons, and sports equipment can also be used for mattresses—and it’s the good stuff, too. Latex acts similarly to memory foam when it comes to pressure relief, but is far more reactive to you moving around. Think of a rubber band snapping back into shape when released; it’s pretty dang close to that. Many brands rely on organic rubber sap to create latex as we know it, and there are two categories of latex foam you’ll usually find with mattresses: Dunlop and Talalay. These names refer to the production process and resulting product, as liquid rubber is poured into molds, torched at high temperatures (called “vulcanization” and yes, I have to resist doing Spock’s “live long and prosper” hand signal every time), and flash-frozen to retain the feel. Dunlop is a firmer latex foam, and hence, firmer feel. Talalay yields a more plush feel. Latex is generally pretty even-keeled when it comes to temperature, too, keeping heat from accumulating within your mattress to maintain a nice, room-temperature feel.
WIRED reviewer Scott Gilbertson has applauded the organic latex construction of the Birch Luxe Natural, citing great support for the lower back region and good temperature regulation.
Smart Mattresses/Adjustable Beds
The mechanics behind smart or adjustable mattresses involve air chambers that can inflate or deflate on command, letting you adjust your firmness level via controller or remote control (depending on the model or brand).
Features can vary among brands, especially depending on whether you opt for the brand’s base as well. By itself, a smart mattress can go firmer or softer at the touch of a button, and some models may be composed exclusively of foam layers over an air-chamber core. In the case of the Sleep Number P6 mattress, which I happen to be testing at the moment, there are zoned mini air chambers beneath the cover that instantly respond to high-pressure areas and adjust support levels accordingly.
Tech
Robotaxi Outage in China Leaves Passengers Stranded on Highways
An unknown technical problem caused a number of robotaxis owned by the Chinese tech giant Baidu to freeze on Tuesday in the middle of traffic, trapping some passengers in the vehicles for more than an hour.
In Wuhan, a city in central China where Baidu has deployed hundreds of its Apollo Go self-driving taxis, people on Chinese social media reported witnessing the cars suddenly malfunction and stop operating. Photos and videos shared online show the Baidu cars halted on busy highways, often in the fast lane.
A college student in Wuhan tells WIRED that she was stuck in a Baidu robotaxi with two friends for about 90 minutes on Tuesday. (She asked to be only identified with her last name, He, to protect her privacy.) The student says the car malfunctioned and stopped four or five times during the trip before it eventually parked in front of an intersection in eastern Wuhan. Luckily, it was not a busy road, and the group was not in immediate danger. The screen display in the car asked the passengers to remain in the car with seatbelt on and wait for a company representative to come “in five minutes,” according to a photo He shared with WIRED.
He says it took about 30 minutes to reach a Baidu customer representative on the phone. “They kept saying it would be reported to their superior. But they didn’t explain what caused [the outage] or let us know how long we needed to wait for the staff to come,” He says. But no one ever came, and after another hour of waiting, the three passengers decided to just get out and go home by themselves (the doors weren’t locked).
On Chinese social media, other passengers also complained about being unable to reach Baidu’s customer support. “I tried every way I could think of to call for help using the options the app showed, but the phone line wouldn’t go through, and when I pressed the SOS button it told me it was unavailable. So then what exactly is the SOS for?” wrote one person in a post on RedNote alongside a video showing the button not working. She said she had to force the door to open and get out of the car as traffic halted to a complete stop behind her robotaxi. “Apollo Go, you really owe me an apology,” she wrote.
Baidu didn’t immediately respond to a request for comment. Local police in Wuhan issued a statement around midnight in China that said the situation was “likely caused by a system malfunction,” but the incident is still under investigation. No one was injured and all passengers have exited the vehicles, the police added. It’s unclear how many of Baidu’s robotaxis may have been impacted.
One dash cam recording posted to RedNote shows a car passing 16 Apollo Go vehicles parked on the road in the span of 90 minutes. On several occasions, the video shows the driver narrowly avoiding hitting the robotaxis by braking or changing lanes at the last minute.
Others were apparently not as fortunate. In another RedNote post, a man claimed he crashed into one of the malfunctioning Baidu vehicles. The man wrote in the caption that he was driving over 40 mph on a highway when the car in front of him suddenly changed lanes to avoid the stopped robotaxi. He couldn’t react fast enough and ended up running into the self-driving car. Photos of the man’s orange SUV being towed away show that the car’s front-right fender was completely torn off, and other parts appeared to have sustained major damage.
Tech
Our Favorite Affordable Air Purifier Is Temporarily Even Cheaper
Tired of the stale, fetid air looming over your apartment like a cloud? Check out the Coway Airmega Mighty, an already wallet-friendly home air purifier that’s even cheaper right now as part of the Amazon Big Spring Sale. It’s currently marked down to just $154, a $76 discount from its typical price, but you’ll want to move quickly if you’re interested, as the deal is only available for a limited time.
Despite its low price tag and squat stature, the Airmega Mighty is capable of cleaning a substantial amount of space. At full bore, it can handle a 361-square-foot space, although you’ll get the best performance, and save your ears, if you’re closer to a 200-square-foot room. If you don’t want it running constantly, there are built-in timers to automatically shut off after 1, 4, or 8 hours, or you can use Eco Mode, which will run until the Might doesn’t sense any dirty air for half an hour.
That’s right, the Airmega Mighty has a built-in air quality sensor, and it reflects the current state of the air quality using a colored light with three levels. It uses those readings to automatically adjust the fan speed and timing settings on the fly, as well as giving you a peak into how bad the air you’re breathing right now is for you. While it lacks integration with smart home setups like Google Home, it makes up for it by handling all of its own business without Wi-Fi or extra apps on your phone.
While the Coway Airmega Mighty is available in three colors, only the black and silver model is currently discounted, so you’ll have to pay full price if it doesn’t match your living room’s color scheme. We’ve put in the work testing every air purifier we could get our hands on, so make sure to check out the full guide if you’re trying to clean up your space. The Coway is discounted as part of Amazon’s Big Spring Sale, and we’ve got the best deals from products we’ve tested gathered in one place if you want to save some bucks.
Tech
In a Big Reversal, Zohran Mamdani Tells NYC Agencies to Use TikTok
New York City mayor Zohran Mamdani, who rode a social media-fueled campaign to Gracie Mansion, is reversing an Eric Adams–era directive barring TikTok from government-owned devices. Local agencies will now be able to post about their projects on the app, though with new guardrails to protect city networks.
“The Mamdani administration is committed to using every tool in our toolbox to communicate with New Yorkers,” says the email to agencies, obtained by WIRED. “At a moment when people are turning to city government for information about free services, emergency situations, upcoming events, and more, we want to open up new avenues of communication with the public and help deliver the information New Yorkers need.”
In August 2023, then-mayor Adams barred the use of TikTok on government devices, joining the ranks of other state and federal agencies that at the time deemed the app a major security risk. Adams spokesperson Jonah Allon said then that the city’s Cyber Command office had decided that TikTok, which was owned by the Chinese-based company ByteDance, “posed a security threat to the city’s technical networks and directed its removal from city-owned devices.”
The directive resulted in a number of popular city-run accounts shutting down, including accounts for the NYC Departments of Sanitation and Parks and Recreation. As of Tuesday morning, the accounts’ bios read, “This account was operated by NYC until August 2023. It’s no longer monitored.”
Now, these TikTok accounts will be allowed to reopen with a few new rules aimed at protecting the security of NYC’s networks and devices while allowing agencies to communicate with citizens on the popular app. In order to use TikTok, agencies will be required to use separate, government-issued devices for the app that “cannot contain sensitive or restricted data, and they cannot be used for email, internal systems, or privileged access,” according to the email to agencies. Agencies will designate specific staff from media and press offices to run the TikTok accounts with city government emails, not personal ones.
“In a fragmented media landscape, more and more people—especially younger people—are looking beyond the four corners of their television screen to stay informed,” Mamdani said in a statement to WIRED. “Our responsibility is simple: Meet people where they are. That means stepping outside our comfort zones and communicating in ways that reflect how New Yorkers actually live, work, and connect.”
Mamdani’s rule reversal comes after his November election that relied heavily on social media to conduct voter outreach. Mamdani leveraged TikTok to recruit volunteers and amplify his policy platform. Over his first few months in office, Mamdani has continued to leverage social media platforms, publishing a variety of public-service announcements related to city-run programs.
Ahead of dangerous winter weather in January, Mamdani published a video to the official @nycmayor account on Instagram asking New Yorkers to sign up for the city’s free emergency communications program, NotifyNYC. The program netted more than 32,000 new subscribers in the four days after the video was released, according to stats provided by Mamdani’s office. Last year, New York City Emergency Management ran a $240,000 advertising round for NotifyNYC, acquiring around 48,000 new subscribers. Mamdani also created a handful of videos asking New Yorkers to join a Department of Sanitation snow-shoveling program. Around 5,000 people signed up, tripling the number previously enrolled in the program.
The situation has also changed for the app. In January 2026, TikTok finalized a deal with the Trump administration to form a new US-based version of the company run by American investors, including Oracle. The consortium of American investors staved off a nationwide ban of the app.
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