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Air conditioning isn’t the only answer

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Air conditioning isn’t the only answer


Credit: Pixabay/CC0 Public Domain

I recently returned from visiting family in America and was struck by how hot I felt back home in London, despite the temperatures being lower. Partly, this was down to humidity: London is sticky in summer, while Utah, where my uncle lives, is very dry.

But it’s also down to the buildings. My brick house absorbs and retains heat while every building I went to in America was either well ventilated or had air conditioning blasting away.

That contrast got me thinking: as the UK warms, can it keep its homes and workplaces comfortable without relying solely on air-con?

Jesus Lizana, Nicole Miranda and Radhika Khosla at the University of Oxford say that northern Europe is dangerously unprepared for the heat of the near future.

They looked at the coming demand for cooling using the concept of “cooling degree days,” which essentially assesses how often people will need to take extra measures, like switching the on, to keep themselves cool.

They found countries like Nigeria and Chad will see the biggest absolute rise in cooling degree days. “A clear indication that Africa is shouldering the burden of a problem it did not create,” they note.

But they also found that countries in northern latitudes will face the greatest relative increase in uncomfortably hot days.

“Of the top ten countries with the most significant relative change in cooling degree days as global warming exceeds 1.5°C and reaches 2°C, eight are located in northern Europe.”

It gets worse. “Buildings in the northern hemisphere,” they write, “are primarily designed to withstand cold seasons by maximizing solar gains and minimizing ventilation—like greenhouses.”

The solution seems obvious: let’s all get air-con.

Coal-powered air-con?

But Mehri Khosravi says it isn’t that simple. An energy researcher at the University of East London, she warns that:

“Cooling requires huge amounts of energy at the exact moments when demand is already high. In 2022 and 2023, the UK had to briefly restart a coal power plant to keep the lights—and the air conditioners—on.”

Khosravi says the UK and similar countries should instead focus on reducing demand for cooling.

In winter, she says, we rightly focus on better insulation to reduce heating demand, as “it’s a lot harder to warm a house than it is to stop heat escaping in the first place.”

So how do we stop a northern European brick house from heating up in the first place?

Khosravi suggests we look to southern Europe for inspiration, where 35°C summers were common long before climate change. Her suggestions include shading and shutters to block sunlight before it enters a building, natural ventilation to let heat escape in cooler hours, and reflective or light-colored buildings that reflect sunlight.

It’s hard to imagine Scarborough being turned into Santorini any time soon. But while we wait to adapt our buildings for the new normal, Khosravi says we should adapt our behavior too.

In Spain, the hottest hours are for siestas. Outdoor activities are paused, and people are more active in the mornings and evenings. Culturally, they understand that keeping curtains closed during the day and opening windows at night can prevent homes from overheating.

In the UK, heat is still culturally framed as “good weather”. Sunny weekends trigger beach trips, barbecues and more outdoor activity, even when it’s dangerously hot. This mismatch between perception and risk is a major public health challenge.
Smarter cooling

Perhaps there are smarter ways to cool down. Academics in Australia recently published research suggesting a “fan first” approach, even when air-conditioning is installed.

“The approach is simple,” they write: “use electric fans as your first cooling strategy, and only turn on air conditioning when the indoor temperature exceeds 27°C.”

These fans use only a tiny fraction of the electricity used to run air conditioning, but “can make you feel up to 4°C cooler.” In their research, the Australian team increased an office’s air conditioning set-point from 24 to 26.5°C, with supplementary air movement from desk and ceiling fans. This “reduced energy consumption by 32%, without compromising thermal comfort.”

Air conditioning doesn’t have to mean the typical rows of humming white boxes. Heat pumps—already central to Britain’s low-carbon heating plans—can also keep homes cool in summer.

Essentially, they’re able to act like reversible air conditioners: in winter, they draw warmth into a building, and in summer they can run in reverse to push heat out.

Crucially, they do so with far greater efficiency than traditional systems. Theresa Pistochini, an engineer at UC Davis in California, points out that heat pumps can be “anywhere from 200% to 400% efficient,” meaning they move more than twice as much energy (heat) than the energy required to operate them.

Her analysis found that “buying a heat pump today will reduce impact in almost all geographical locations.”

For households, this could mean one appliance that covers both heating and cooling, slashes energy bills, and avoids the climate-damaging lock-in of conventional air conditioning. For policymakers, heat pumps may offer a way to meet surging cooling demand without blowing the carbon budget.

But heat pumps aren’t a perfect fix. Installation is costly, many older homes will still need upgrades, and there aren’t enough trained engineers. They’ll need further support if they’re to become a mainstream alternative to air-con.

Nonetheless, together with simple measures like fans and shutters, heat pumps point to a smarter approach to cooling. And it could be made even more sustainable if paired with clean energy from rooftop solar.

Homes equipped with can generate electricity during the hottest parts of the day—exactly when air conditioners or heat pumps are working hardest.

Tom Rogers and colleagues at Nottingham Trent University say solar will play a “pivotal role” in “addressing summer cooling demand and enhancing climate resilience.” They analyzed satellite images to estimate that rooftop solar could provide “nearly one third” of the city’s electricity demand.

The UK is warming, and staying comfortable in hotter summers is a must. But there’s more than one way to cool down. Simple measures like fans, efficient and rooftop solar—combined with smarter building design and passive —could keep homes safe, energy use low and emissions in check.

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A Humanoid Robot Set a Half-Marathon Record in China

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A Humanoid Robot Set a Half-Marathon Record in China


Over the weekend in China, a humanoid robot shattered world half-marathon record—the human record—by seven minutes.

The star performer was a robot developed by the Chinese company Honor (the smartphone maker), which finished the 13.1-mile race in 50 minutes, 26 seconds. The human record, set by Ugandan Olympic medalist Jacob Kiplimo, is 57 minutes, 20 seconds. The result marks an impressive milestone especially considering that, just a year earlier, the fastest robot at this half-marathon event took two and a half hours to complete the same distance.

But Honor’s robot was not the only participant. The event consisted of more than 100 humanoid robots from 76 institutions across China. The robots lined up alongside 12,000 human runners in Beijing’s E-Town, albeit on separate courses to avoid accidents. The contrast in performance between humans and robots was more than evident.

Run, Robot, Run

A humanoid robot is designed to mimic the structure and movement of the human body, with legs, arms, and sensors that allow it to interact with its environment. In this case, the winning robot incorporated features inspired by elite runners: long legs (almost a meter), advanced balance systems, and a liquid cooling mechanism, similar to that of smartphones, to prevent overheating during the race.

In addition, many of the participating robots operated autonomously, meaning without direct human control. Thanks to artificial intelligence algorithms, they could adjust their pace, maintain balance, and adapt to the terrain in real time. Notably, the Honor robot that achieved the 50-minute mark operated autonomously. The Chinese manufacturer presented another robot, operated by remote control, that ran the same stretch in even less time: 48 minutes, 19 seconds.

As expected, there were some accidents in the race. Some robots fell down, others veered off the path, and several needed technical assistance along the way. While the physical performance of humanoid robots has advanced rapidly, their reliability is still developing. Of course, the laughter and jeers are no longer as frequent as they used to be, replaced by applause and exclamations of surprise.

The winning robot, “Blitz,” from smartphone manufacturer Honor was on display at the awards ceremony after the Beijing E-Town Robot Half Marathon.

Photograph: Lintao Zhang/Getty Images

Robot Superiority

Just like the robots that went viral for their impressive martial arts display a few weeks ago, this long-distance race is part of a broader strategy by China to show off its leadership in the development of advanced robots.

You don’t need to be a robotics expert to see that this achievement demonstrates that machines can outperform humans at specific physical tasks under controlled conditions. (It’s hard to imagine that the winning robot could achieve the same result, for example, if it started to rain during the race.) But humans still have a few tricks up their sleeve: Running in a straight line is very different from performing complex real-world activities, such as manipulating delicate objects or interacting socially.

However, it’s understandable that the image of a robot crossing the finish line in record time, ahead of human athletes, raises several questions. Is this the beginning of a new era in which machines redefine physical limits?

One could argue that a car is a machine, and those have always been faster than humans. But a humanoid robot is designed to mimic humans. It’s more alarming to see one beat humanity at its own game—even if so many of them are still tripping over themselves.

This story originally appeared in WIRED en Español and has been translated from Spanish.





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War Memes Are Turning Conflict Into Content

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War Memes Are Turning Conflict Into Content


As ceasefire announcements between the US and Iran—and separately between Israel and Lebanon—dominated headlines over the past two weeks, they also prompted a look back at how war spread online: through memes.

There were jokes about conscription. Captions about getting drafted, but at least with a Bluetooth device. The song “Bazooka” went viral, with users lip-syncing to: “Rest in peace my granny, she got hit by a bazooka.” Military filters followed. So did posts about Americans wanting to be sent to Dubai “to save all the IG models.”

Across the Gulf, the tone was different but the instinct was the same. Memes joked that Iran was replying to Israel faster than the person you’re thinking about. Delivery drivers were shown “dodging missiles.” “Eid fits” became hazmat suits and tactical vests.

Dark humor is one of the oldest responses to fear, a way of reclaiming control, however briefly, over events that offer none. Variations of that idea appear across psychology and philosophy, including Freud’s relief theory, which frames humor as a release of tension.

But social media changes the scale and speed of that instinct.

A joke once shared within a small community can become a global template in minutes. Algorithms do not reward depth or accuracy; they reward engagement. The memes that travel fastest are usually stripped of context, easy to recognize and simple to remix.

Middle East scholar and media analyst Adel Iskandar traces political satire back centuries, from banned satirical papyri in ancient Egypt to cartoons during revolutions and gallows humor in modern wars. “Where there is hardship, there is satire,” he says. “Where there is loss of hope, there is hope in comedy.”

That tradition still exists online. But today it is fused with recommendation systems designed to keep attention moving.

Memes Spread Faster Than Facts

The word “meme” was coined by Richard Dawkins in his 1976 book The Selfish Gene, where he described how ideas replicate like genes. On today’s internet, replication follows platform logic.

Fitness means generality. A meme does not need to be accurate. It needs to feel familiar. It needs the right format, paired with trending audio and the right emotional shorthand.

“A meme is like a virus,” Iskandar says. “If it doesn’t travel, it’ll die.”

The most visible response online is not always the truest one. It is often just the easiest to spread. And once context disappears, one crisis can start to resemble any other.

Geography shapes humor too, and adds another level of tension. “If you live far away from the threat, you’re capable of producing content that ridicules it with an element of safety,” says Iskandar. “Whereas if you happen to be within close proximity, it is more of a fatalism.”

That divide matters. For some users, war exists mainly as mediated spectacle: clips, edits, graphics, headlines, and reaction posts. For others, it is sirens, uncertainty, disrupted flights, rising prices, and messages checking who is safe.

The same meme can function as entertainment in one country and emotional survival in another. Take the American experience of violence, which Sut Jhally, professor of communication at the University of Massachusetts Amherst, says “is very mediated.”

What much of the Western world has consumed instead is what cultural critic George Gerbner called “happy violence”: spectacular, consequence-free, and detached from the aftermath.

Jhally argues that the September 11 attacks remain the defining modern American experience of war-adjacent political violence. Much else has been cinematic: distant invasions, blockbuster destruction, video-game logic, apocalypse franchises.

The teenager from the Midwest joking about being drafted is drawing from zombie films and superhero apocalypses. “There is almost no discussion about what an actual Third World War would look like,” he says. “People do not have a perception of what that really looks like.”





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Hyundai’s New Ioniq 3 Has Hot-Hatch Looks, but Can It Beat BYD?

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Hyundai’s New Ioniq 3 Has Hot-Hatch Looks, but Can It Beat BYD?


Hyundai has unveiled its Ioniq 3, a fully electric compact hatchback for urban driving designed to be as aerodynamically efficient as possible yet still offer up a surprisingly spacious interior—a trick the carmaker is loftily calling Aero Hatch. The 3 is intended to fill the gap between Hyundai’s Inster supermini and Ioniq 5 crossover.

In profile, the Ioniq 3 has a sleek front end that transitions into a roofline that stays straight over both front and rear occupants before dropping to merge with the rear spoiler. It’s this roofline that maximizes interior headroom for the rear passengers, but it also offers a supposed class-leading drag coefficient of 0.263.

The Ioniq 3’s impressive aerodynamics will supposedly help it get more than 300 miles on a single charge.

Photograph: Courtesy of Hyundai

The car has the same underpinnings as its sibling brand, Kia’s EV2. Two battery options will deliver a projected WLTP distance of 344 km (around 214 miles) for the Standard Range Ioniq 3; the Long Range version is supposedly good for a competitive 308-mile range. Built on the group’s Electric-Global Modular Platform (E-GMP), the car has a 400-volt architecture to lower costs rather than the 800-volt system of the Ioniq 5 N, 6, or 9 SUV. Still, this means that if you can find sufficiently fast DC charging, you can, in theory, top up from 10 to 80 percent in approximately 29 minutes (AC charging capability is up to 22 kW).

This is fine, but it is not a match for BYD’s new Blade 2.0 battery tech that WIRED tried, astonishingly allowing the Denza Z9 GT to charge its battery in just over nine minutes from 10 percent. True, that battery tech was in a $100,000 “premium” EV, but it’s coming to BYD’s wider models. And if BYD makes good on its plans to deliver a charging network to rival Tesla’s Supercharger, then very soon buyers will be expecting comparable charge times, and 30 minutes will quickly feel awfully long.

I asked José Muñoz, Hyundai Motor Company president and CEO, whether this new battery technology from BYD concerns him, whether Hyundai—leading the EV pack with 800-volt architectures for so long—needs to match the Blade 2.0’s performance. “We welcome the challenge,” Muñoz tells me. “Every challenge is an opportunity to do better. And I can tell you that, lately, we have a lot of opportunities to do better.”

“We are also working on fast charging,” Muñoz says, adding that Hyundai’s success will be built on not merely one leading technology but many. “There are not more elements that may be offered by the Chinese that we can offer. It’s only a matter of how you mix them. A lot of times, you get stuck into one indicator. I’m an engineer. And we always have the example of the airplanes: What is more important in an airplane, altitude or speed? There is only one answer. You need to achieve both.”



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