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People without air conditioning fare better during blackouts. Here’s why.
I am, in the summer, the human equivalent of a slightly overcooked noodle.
This is especially true in a coastal city like Washington, D.C., where I live. The heat and humidity seep into my bones and I attain a semi-liquid state in which, despite my enthusiasm for hiking and kayaking and swimming and all those other good summer activities, I find myself craving exactly one thing every time I go outside: Air conditioning.
Air conditioners, for better or worse, have become our default solution for extreme heat. When concrete and steel construction replaced regional architecture around the world, air conditioners — where people could afford them — awkwardly, imperfectly filled the spaces left behind by missing local design and materials that would have otherwise helped cope with the weather. And as the world gets hotter, ACs are growing more and more popular: In India, where I mostly grew up without an AC, sales of ACs have skyrocketed over the past decade from three million units in 2013 to an expected 9.7 million this year.
But there is, of course, a catch. As vernacular architecture disappears, so too does vernacular knowledge; many of us, bowing to our cooling-machine gods, have forgotten how to deal with the heat.
Air conditioning has an odd side effect: It makes us dependent. In a 2021 study from Georgia Tech’s Urban Climate Lab, which modeled indoor heat across Atlanta, Phoenix, and Detroit during heat waves, researchers found that people without air conditioning would fare better during a blackout because they’d be more likely to take other measures to help deal with the heat. These are simple moves, like drinking more water and using curtains to keep their rooms dark and cool, whereas people with air conditioning might put too much faith in their appliances — and be entirely unprepared for those appliances to stop working.
“I think a combined blackout and heat wave is the most deadly climate risk we’re confronting right now,” said Brian Stone Jr., director of the Urban Climate Lab and a Professor in the School of City and Regional Planning at Georgia Tech. “A blackout situation really kind of inverts the traditional risk pyramid. If you don’t have air conditioning in your house, you probably have greater heat resilience. Those of us who have air conditioning whenever we want it are going to be more susceptible.”
Heat waves put extreme stress on power grids, and blackouts are increasingly common as summers get hotter. If more people buy more air conditioners without any work being done to shore up the grid (and, believe me, the grid badly needs shoring up), that extra stress could lead to quicker, more common grid failures. It’s unfortunately easy to imagine just how dangerous a grid failure can be: A major blackout during a heat wave would be the inverse of the Texas blackout during the winter of 2021, when hundreds of Texans died of hypothermia in their own homes.
For someone in a house without an air conditioner, a blackout during a heat wave probably wouldn’t affect the temperature inside much; someone who does have one, however, will inevitably find their house heating up beyond a point they were prepared for. As Rebecca Leber pointed out in Vox, early-season heat waves are dangerous because our bodies aren’t prepared for the heat. The sudden loss of air conditioning for someone used to it is dangerous for the same reason.
Our built environment, like a natural ecosystem, is the sum total of many pieces fitting together, and not all of them fit perfectly. Air conditioners are the perfect example: They aren’t universally good at cooling our buildings down, especially if those buildings weren’t built with air conditioning in mind — they often lack proper insulation, for example, which means cooled air will escape a room quickly. That means air conditioners will have to work harder to cool the air, which both further heats up the air outside and places more stress on the grid. When the built ecosystem fails, its human inhabitants inevitably suffer.
Last week, I wrote about a study out of Portland, Oregon, that measured how hot the units in three public-housing developments got during the summer of 2022. To the surprise of the researchers conducting that study, the units with air conditioners were not much cooler than those that didn’t have them. There were a few reasons for this: first, running an air conditioner is expensive, and residents with air conditioners would often turn the temperature up to save on electricity costs. Second, the buildings weren’t designed for air conditioning, so the apartments couldn’t retain cooled air very well.
Third, and most importantly, the residents who didn’t have air conditioners were both more cognizant of heat dangers and more likely to take other steps to cool their spaces down; they retained, in other words, a sort of vernacular knowledge of how to deal with the heat.
“The residents who don’t have air conditioners go to great lengths to keep their homes cool,” said Dana Hellman, a program manager at CAPA Strategies, the climate consultancy that ran the Portland study for the city. “For example, they made DIY insulation for their windows or kept all their lights off or their curtains closed all day long. It’s burdensome, but it might be leveling the field a little bit.”
Which isn’t to say that air conditioners should be abandoned wholesale. If indoor temperatures rise too much, everyone is at risk of heat stroke. Many cities, including Portland, operate cooling centers for residents to go to during extreme heat events. But none of those cities mandate that those centers have some sort of backup power option, and even if they did there aren’t nearly enough centers to serve every resident.
As with climate change more broadly, there are obvious equity issues here: The people who are most likely to use cooling centers are the people who are most likely vulnerable in other ways, as well. More well-off residents can afford to pay for an air conditioner, its associated costs, and possibly also a backup generator to help them ride out a heat wave in the comfort of their own homes; many cooling centers are understaffed and under-resourced, which raises safety concerns for residents who then have to choose whether to stay home or potentially put themselves at risk for the sake of finding relief from the heat.
So what should we do as the world continues to heat up?
We can start with the long, hard task of adapting the grid to keep us safe during heat waves, a fix that Stone points out is decades overdue. “Back in the 90s, the idea was that we’d be successful in reducing global emissions and wouldn’t need to adapt [to global warming],” Stone said. “If we had acknowledged to ourselves that it was going to be a 20 to 50 year project just to start adapting, we might have been more attuned to the fact that the electrical grid is a life support system for us when it is too hot outside to be healthy. But that’s been a slow realization.”
In Portland, the housing authority has a program to provide public housing residents with free air conditioners. But there are other forms of adaptation, too: Stone and his colleagues found that cool roofs, which reflect more sunlight than traditional roofs, can lower ambient temperatures by 1 to 1.5 degrees Celsius. Urban tree cover, which throws potentially life-saving shade onto houses and roads alike, can also go a long way towards cooling things down.
Most important, however, is actually going to be changing the way we interact with heat. Education — getting people to take heat waves as seriously as, say, a hurricane or wildfire — is just as important as modifying our built environment. Perhaps we'll all, as Morgan Meaker wrote in Wired last year, take a leaf out of the Spanish playbook and adopt the siesta (an idea that I personally endorse), or learn to live in the dark caves of our curtain-darkened apartments in the peak of summer.
I may even start turning up my AC to let my body acclimatize to its natural state of noodle. Whatever the solution, heat must re-enter our vernacular: not just as something we mechanically force out of our homes, but as something we figure out how to live with.
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Give the people what they want — big, family-friendly EVs.
The star of this year’s Los Angeles Auto Show was the Hyundai Ioniq 9, a rounded-off colossus of an EV that puts Hyundai’s signature EV styling on a three-row SUV cavernous enough to carry seven.
I was reminded of two years ago, when Hyundai stole the L.A. show with a different EV: The reveal of Ioniq 6, its “streamliner” aerodynamic sedan that looked like nothing else on the market. By comparison, Ioniq 9 is a little more banal. It’s a crucial vehicle that will occupy the large end of Hyundai's excellent and growing lineup of electric cars, and one that may sell in impressive numbers to large families that want to go electric. Even with all the sleek touches, though, it’s not quite interesting. But it is big, and at this moment in electric vehicles, big is what’s in.
The L.A. show is one the major events on the yearly circuit of car shows, where the car companies traditionally reveal new models for the media and show off their whole lineups of vehicles for the public. Given that California is the EV capital of America, carmakers like to talk up their electric models here.
Hyundai’s brand partner, Kia, debuted a GT performance version of its EV9, adding more horsepower and flashy racing touches to a giant family SUV. Jeep reminded everyone of its upcoming forays into full-size and premium electric SUVs in the form of the Recon and the Wagoneer S. VW trumpeted the ID.Buzz, the long-promised electrified take on the classic VW Microbus that has finally gone on sale in America. The VW is the quirkiest of the lot, but it’s a design we’ve known about since 2017, when the concept version was revealed.
Boring isn’t the worst thing in the world. It can be a sign of a maturing industry. At auto shows of old, long before this current EV revolution, car companies would bring exotic, sci-fi concept cars to dial up the intrigue compared to the bread-and-butter, conservatively styled vehicles that actually made them gobs of money. During the early EV years, electrics were the shiny thing to show off at the car show. Now, something of the old dynamic has come to the electric sector.
Acura and Chrysler brought wild concepts to Los Angeles that were meant to signify the direction of their EVs to come. But most of the EVs in production looked far more familiar. Beyond the new hulking models from Hyundai and Kia, much of what’s on offer includes long-standing models, but in EV (Chevy Equinox and Blazer) or plug-in hybrid (Jeep Grand Cherokee and Wrangler) configurations. One of the most “interesting” EVs on the show floor was the Cybertruck, which sat quietly in a barely-staffed display of Tesla vehicles. (Elon Musk reveals his projects at separate Tesla events, a strategy more carmakers have begun to steal as a way to avoid sharing the spotlight at a car show.)
The other reason boring isn’t bad: It’s what the people want. The majority of drivers don’t buy an exotic, fun vehicle. They buy a handsome, spacious car they can afford. That last part, of course, is where the problem kicks in.
We don’t yet know the price of the Ioniq 9, but it’s likely to be in the neighborhood of Kia’s three-row electric, the EV9, which starts in the mid-$50,000s and can rise steeply from there. Stellantis’ forthcoming push into the EV market will start with not only pricey premium Jeep SUVs, but also some fun, though relatively expensive, vehicles like the heralded Ramcharger extended-range EV truck and the Dodge Charger Daytona, an attempt to apply machismo-oozing, alpha-male muscle-car marketing to an electric vehicle.
You can see the rationale. It costs a lot to build a battery big enough to power a big EV, so they’re going to be priced higher. Helpfully for the car brands, Americans have proven they will pay a premium for size and power. That’s not to say we’re entering an era of nothing but bloated EV battleships. Models such as the overpowered electric Dodge Charger and Kia EV9 GT will reveal the appetite for performance EVs. Smaller models like the revived Chevy Bolt and Kia’s EV3, already on sale overseas, are coming to America, tax credit or not.
The question for the legacy car companies is where to go from here. It takes years to bring a vehicle from idea to production, so the models on offer today were conceived in a time when big federal support for EVs was in place to buoy the industry through its transition. Now, though, the automakers have some clear uncertainty about what to say.
Chevy, having revealed new electrics like the Equinox EV elsewhere, did not hold a media conference at the L.A. show. Ford, which is having a hellacious time losing money on its EVs, used its time to talk up combustion vehicles including a new version of the palatial Expedition, one of the oversized gas-guzzlers that defined the first SUV craze of the 1990s.
If it’s true that the death of federal subsidies will send EV sales into a slump, we may see messaging from Detroit and elsewhere that feels decidedly retro, with very profitable combustion front-and-center and the all-electric future suddenly less of a talking point. Whatever happens at the federal level, EVs aren’t going away. But as they become a core part of the car business, they are going to get less exciting.
Current conditions: Parts of southwest France that were freezing last week are now experiencing record high temperatures • Forecasters are monitoring a storm system that could become Australia’s first named tropical cyclone of this season • The Colorado Rockies could get several feet of snow today and tomorrow.
This year’s Atlantic hurricane season caused an estimated $500 billion in damage and economic losses, according to AccuWeather. “For perspective, this would equate to nearly 2% of the nation’s gross domestic product,” said AccuWeather Chief Meteorologist Jon Porter. The figure accounts for long-term economic impacts including job losses, medical costs, drops in tourism, and recovery expenses. “The combination of extremely warm water temperatures, a shift toward a La Niña pattern and favorable conditions for development created the perfect storm for what AccuWeather experts called ‘a supercharged hurricane season,’” said AccuWeather lead hurricane expert Alex DaSilva. “This was an exceptionally powerful and destructive year for hurricanes in America, despite an unusual and historic lull during the climatological peak of the season.”
AccuWeather
This year’s hurricane season produced 18 named storms and 11 hurricanes. Five hurricanes made landfall, two of which were major storms. According to NOAA, an “average” season produces 14 named storms, seven hurricanes, and three major hurricanes. The season comes to an end on November 30.
California Gov. Gavin Newsom announced yesterday that if President-elect Donald Trump scraps the $7,500 EV tax credit, California will consider reviving its Clean Vehicle Rebate Program. The CVRP ran from 2010 to 2023 and helped fund nearly 600,000 EV purchases by offering rebates that started at $5,000 and increased to $7,500. But the program as it is now would exclude Tesla’s vehicles, because it is aimed at encouraging market competition, and Tesla already has a large share of the California market. Tesla CEO Elon Musk, who has cozied up to Trump, called California’s potential exclusion of Tesla “insane,” though he has said he’s okay with Trump nixing the federal subsidies. Newsom would need to go through the State Legislature to revive the program.
President-elect Donald Trump said yesterday he would impose steep new tariffs on all goods imported from China, Canada, and Mexico on day one of his presidency in a bid to stop “drugs” and “illegal aliens” from entering the United States. Specifically, Trump threatened Canada and Mexico each with a 25% tariff, and China with a 10% hike on existing levies. Such moves against three key U.S. trade partners would have major ramifications across many sectors, including the auto industry. Many car companies import vehicles and parts from plants in Mexico. The Canadian government responded with a statement reminding everyone that “Canada is essential to U.S. domestic energy supply, and last year 60% of U.S. crude oil imports originated in Canada.” Tariffs would be paid by U.S. companies buying the imported goods, and those costs would likely trickle down to consumers.
Amazon workers across the world plan to begin striking and protesting on Black Friday “to demand justice, fairness, and accountability” from the online retail giant. The protests are organized by the UNI Global Union’s Make Amazon Pay Campaign, which calls for better working conditions for employees and a commitment to “real environmental sustainability.” Workers in more than 20 countries including the U.S. are expected to join the protests, which will continue through Cyber Monday. Amazon’s carbon emissions last year totalled 68.8 million metric tons. That’s about 3% below 2022 levels, but more than 30% above 2019 levels.
Researchers from MIT have developed an AI tool called the “Earth Intelligence Engine” that can simulate realistic satellite images to show people what an area would look like if flooded by extreme weather. “Visualizing the potential impacts of a hurricane on people’s homes before it hits can help residents prepare and decide whether to evacuate,” wrote Jennifer Chu at MIT News. The team found that AI alone tended to “hallucinate,” generating images of flooding in areas that aren’t actually susceptible to a deluge. But when combined with a science-backed flood model, the tool became more accurate. “One of the biggest challenges is encouraging people to evacuate when they are at risk,” said MIT’s Björn Lütjens, who led the research. “Maybe this could be another visualization to help increase that readiness.” The tool is still in development and is available online. Here is an image it generated of flooding in Texas:
Maxar Open Data Program via Gupta et al., CVPR Workshop Proceedings. Lütjens et al., IEEE TGRS
A new installation at the Centre Pompidou in Paris lets visitors listen to the sounds of endangered and extinct animals – along with the voice of the artist behind the piece, the one and only Björk.
How Hurricane Helene is still putting the Southeast at risk.
Less than two months after Hurricane Helene cut a historically devastating course up into the southeastern U.S. from Florida’s Big Bend, drenching a wide swath of states with 20 trillion gallons of rainfall in just five days, experts are warning of another potential threat. The National Interagency Fire Center’s forecast of fire-risk conditions for the coming months has the footprint of Helene highlighted in red, with the heightened concern stretching into the new year.
While the flip from intense precipitation to wildfire warnings might seem strange, experts say it speaks to the weather whiplash we’re now seeing regularly. “What we expect from climate change is this layering of weather extremes creating really dangerous situations,” Robert Scheller, a professor of forestry and environmental resources at North Carolina State University, explained to me.
Scheuller said North Carolina had been experiencing drought conditions early in the year, followed by intense rain leading up to Helene’s landfall. Then it went dry again — according to the U.S. Drought Monitor, much of the state was back to some level of drought condition as of mid-November. The NIFC forecast report says the same is true for much of the region, including Florida, despite its having been hit by Hurricane Milton soon after Helene.
That dryness is a particular concern due to the amount of debris left in Helene’s wake — another major risk factor for fire. The storm’s winds, which reached more than 100 miles per hour in some areas, wreaked havoc on millions of acres of forested land. In North Carolina alone, the state’s Forest Service estimates over 820,000 acres of timberland were damaged.
“When you have a catastrophic storm like [Helene], all of the stuff that was standing upright — your trees — they might be snapped off or blown over,” fire ecologist David Godwin told me. “All of a sudden, that material is now on the forest floor, and so you have a really tremendous rearrangement of the fuels and the vegetation within ecosystems that can change the dynamics of how fire behaves in those sites.”
Godwin is the director of the Southern Fire Exchange for the University of Florida, a program that connects wildland firefighters, prescribed burners, and natural resources managers across the Southeast with fire science and tools. He says the Southeast sees frequent, unplanned fires, but that active ecosystem management helps keep the fires that do spark from becoming conflagrations. But an increase like this in fallen or dead vegetation — what Godwin refers to as fire “fuel” — can take this risk to the next level, particularly as it dries out.
Godwin offered an example from another storm, 2018’s Hurricane Michael, which rapidly intensified before making landfall in Northern Florida and continuing inland, similar to Hurricane Helene. In its aftermath, there was a 10-fold increase in the amount of fuel on the ground, with 72 million tons of timber damaged in Florida. Three years later, the Bertha Swamp Road Fire filled the storm’s Florida footprint with flames, which consumed more than 30,000 acres filled with dried out forest fuel. One Florida official called the wildfire the “ghost” of Michael, nodding to the overlap of the impacted areas and speaking to the environmental threat the storm posed even years later.
Not only does this fuel increase the risk of fire, it changes the character of the fires that do ignite, Godwin said. Given ample ground fuel, flame lengths can grow longer, allowing them to burn higher into the canopy. That’s why people setting prescribed fires will take steps like raking leaf piles, which helps keep the fire intensity low.
These fires can also produce more smoke, Godwin said, which can mix with the mountainous fog in the region to deadly effect. According to the NIFC, mountainous areas incurred the most damage from Helene, not only due to downed vegetation, but also because of “washed out roads and trails” and “slope destabilization” from the winds and rain. If there is a fire in these areas, all these factors will also make it more challenging for firefighters to address it, the report adds.
In addition to the natural debris fire experts worry about, Helene caused extensive damage to the built environment, wrecking homes, businesses, and other infrastructure. Try imagining four-and-a-half football fields stacked 10 feet tall with debris — that’s what officials have removed so far just in Asheville, North Carolina. In Florida’s Treasure Island, there were piles 50 feet high of assorted scrap materials. Officials have warned that some common household items, such as the lithium-ion batteries used in e-bikes and electric vehicles, can be particularly flammable after exposure to floodwaters. They are also advising against burning debris as a means of managing it due to all the compounding risks.
Larry Pierson, deputy chief of the Swannanoa Fire Department in North Carolina, told Blueridge Public Radio that his department’s work has “grown exponentially since the storm.” While cooler, wetter winter weather could offer some relief, Scheuller said the area will likely see heightened fire behavior for years after the storm, particularly if the swings between particularly wet and particularly dry periods continue.
Part of the challenge moving forward, then, is to find ways to mitigate risk on this now-hazardous terrain. For homeowners, that might mean exercising caution when dealing with debris and considering wildfire risk as part of rebuilding plans, particularly in more wooded areas. On a larger forest management scale, this means prioritizing safe debris collection and finding ways to continue the practice of prescribed burns, which are utilized more in the Southeast than in any other U.S. region. Without focused mitigation efforts, Godwin told me the area’s overall fire outlook would be much different.
“We would have a really big wildfire issue,” he said, “perhaps even bigger than what we might see in parts of the West.”