You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
Is it safe to turn it on an AC? If you have an air purifier, where should you put it? An air quality expert answers our pressing questions.
You’re in your apartment, windows closed, hiding out from the wildfire smoke blanketing your city. But it’s starting to smell a little bit like barbecue, and your eyes are getting watery. What should you do?
Wildfire smoke contains tiny particles, invisible to the human eye, that can enter your lungs and bloodstream. Those particles can exacerbate the risk of having an asthma attack, heart attack, and stroke. They also have lasting effects on your heart and respiratory system, and can lead to premature death. You really want to take the likelihood that smoke is getting into your home seriously.
But that can lead to a lot of questions.
Maybe you have an air purifier. Where should you put it?
Maybe you don’t have an air purifier, but you have a window air conditioner. Is it safe to turn it on?
I called up John Volckens, a professor of mechanical engineering at Colorado State University, and grilled him on every home configuration I could think of to understand how you can protect yourself against the dangers of smoke. Volckens studies air quality, exposure science, and air pollution-related disease. He has even pioneered the development of new pollution sensor technologies. Hehad a lot of helpful tips to offer.
It’s important to understand there’s really no way to fully prevent smoke from getting inside your home. Even if you don’t smell it or feel its effects, you should do what you can to protect yourself.
That’s because most homes and buildings “breathe.” As the sun heats the upper reaches of the building, it warms the air, which expands and wants to escape. As the air flows out, the lower part of the house, where it’s cooler, draws new air in to replace it.
“The analogy would be like if a 6-foot flood of water came to your house. It doesn’t matter how many sandbags you have, the water’s coming in, right?” Volckens said. “If the air quality index is like 400 outside for a few hours, it’s going to get to like 200 inside your home no matter what.”
The number one thing you can do is get an air purifier. You might not be able to find one in stores right now or have one delivered in time, but there are other options, too, as I’ll discuss below.
Place it wherever you are.
We spend a third of our lives in bed, so Volckens said he likes to have one in the bedroom. “If you have seasonal allergies, creating that kind of safe space for your immune system can be really helpful,” he told me.
But if you only have one device, when you’re done sleeping, just pick it up and move it into the kitchen, office, or living room with you. It should only take about an hour to work its magic and get whatever room you’re in to the best air quality that it’s capable of.
Window AC units work by recirculating the air in your apartment, so they won’t exacerbate the issue and are generally safe to use. The filters in your window units won’t do much to improve your air, though — they are designed to catch larger particles like dust and animal fur, and smoke particles will slip right through.
If you have a central air conditioning system that delivers cool air through ducts and vents, that’s another story. Those are typically designed to draw in air from the outside. In that case, the best thing to do is install what’s called a MERV filter, which you can purchase at most hardware stores or big box stores. Volckens recommends picking up a filter rated MERV-13, which can capture the smallest particles at a relatively high rate.
“It will probably be like 75% efficient. So if 100 wildfire smoke particles pass through that filter, only 25 will get through,” he said. “You're going to knock down the concentration significantly, especially as that filter keeps cycling air through your home.”
The one thing to keep in mind is that these filters are so good, they will get clogged quickly. A clogged filter will cause your HVAC system to work too hard, which could lead to mechanical issues, so make sure you remember to replace it every couple of months.
What's the alternative to an air purifier?
DIY air filters are surprisingly easy to make and incredibly effective. No, really. All you have to do is buy a box fan, duct tape, and a MERV filter. Tape the filter to the back of the box fan. That’s it.
“They work just as well as commercial air cleaners,” said Volckens. They’re a little bit louder, but otherwise, it’s the exact same idea. “A commercial air purifier might have a fancier fan and a fancier filter, but it’s still just a fan and a filter.”
And if you want to get a little fancier, you can build what’s called a Corsi-Rosenthal box. It’s the same idea, but envelops the fan intake in four filters instead of one. The Washington Post has a very easy-to-follow video showing how to build one. “They work as best as the highest-end air cleaners you could buy for one-fifth or one-tenth of the cost,” said Volckens.
N-95 masks, like the kind recommended to protect against COVID-19, also effectively filter out pollution, and are your best bet. Even a blue surgical mask will be somewhat helpful, said Volckens.
If you’re tired of being cooped up at home, you can also find what Volckens likes to call “clean air zones.” He recommended the public library, a Starbucks, or any other public building. Go support your local movie theater.
“Most public buildings actually have more efficient air cleaning than homes because the buildings were built more recently and they’re built to code standards that require cleaner air.”
Wildfire smoke is truly disgusting. The particles can contain thousands of chemicals, and they will stick to any surface they touch — the ceiling, the carpet, your clothing. You can certainly wash your clothes and linens, but it might not be possible to scrub every surface of your home.
“The best thing you can do when the air does clean up is to just open all your windows and get some good air exchange going,” said Volckens. “I guarantee, yes, you’ll have that wildfire smell for a couple of days, but it will eventually go away.”
Before we hung up, I asked Volckens if there were any other tips we didn’t cover.
“The only thing I’ll say is that this problem isn’t going away,” he said. “And it’s our doing, right? This is the result of a warming planet.”
This article was last updated on June 28, 2023.
Read more about wildfire smoke :
The 5 Big Questions About the 2023 Wildfire Smoke Crisis
Wednesday Was the Worst Day for Wildfire Pollution in U.S. History
When There’s Smoke, Getting Indoors Isn’t Enough
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
What he wants them to do is one thing. What they’ll actually do is far less certain.
Donald Trump believes that tariffs have almost magical power to bring prosperity; as he said last month, “To me, the world’s most beautiful word in the dictionary is tariffs. It’s my favorite word.” In case anyone doubted his sincerity, before Thanksgiving he announced his intention to impose 25% tariffs on everything coming from Canada and Mexico, and an additional 10% tariff on all Chinese goods.
This is just the beginning. If the trade war he launched in his first term was haphazard and accomplished very little except costing Americans money, in his second term he plans to go much further. And the effects of these on clean energy and climate change will be anything but straightforward.
The theory behind tariffs is that by raising the price of an imported good, they give a stronger footing in the market; eventually, the domestic producer may no longer need the tariff to be competitive. Imposing a tariff means we’ve decided that a particular industry is important enough that it needs this kind of support — or as some might call it, protection — even if it means higher prices for a while.
The problem with across-the-board tariffs of the kind Trump proposes is that they create higher prices even for goods that are not being produced domestically and probably never will be. If tariffs raise the price of a six-pack of tube socks at Target from $9.99 to $14.99, it won’t mean we’ll start making tube socks in America again. It just means you’ll pay more. The same is often true for domestic industries that use foreign parts in their manufacturing: If no one is producing those parts domestically, their costs will unavoidably rise.
The U.S. imported over $3 trillion worth of goods in 2023, and $426 billion from China alone, so Trump’s proposed tariffs would represent hundreds of billions of dollars of increased costs. That’s before we account for the inevitable retaliatory tariffs, which is what we saw in Trump’s first term: He imposed tariffs on China, which responded by choking off its imports of American agricultural goods. In the end, the revenue collected from Trump’s tariffs went almost entirely to bailing out farmers whose export income disappeared.
The past almost-four years under Joe Biden have seen a series of back-and-forth moves in which new tariffs were announced, other tariffs were increased, exemptions were removed and reinstated. For instance, this May Biden increased the tariff on Chinese electric vehicles to over 100% while adding tariffs on certain EV batteries. But some of the provisions didn’t take effect right away, and only certain products were affected, so the net economic impact was minimal. And there’s been nothing like an across-the-board tariff.
It’s reasonable to criticize Biden’s tariff policies related to climate. But his administration was trying to navigate a dilemma, serving two goals at once: reducing emissions and promoting the development of domestic clean energy technology. Those goals are not always in alignment, at least in the short run, which we can see in the conflict within the solar industry. Companies that sell and install solar equipment benefit from cheap Chinese imports and therefore oppose tariffs, while domestic manufacturers want the tariffs to continue so they can be more competitive. The administration has attempted to accommodate both interests with a combination of subsidies to manufacturers and tariffs on certain kinds of imports — with exemptions peppered here and there. It’s been a difficult balancing act.
Then there are electric vehicles. The world’s largest EV manufacturer is Chinese company BYD, but if you haven’t seen any of their cars on the road, it’s because existing tariffs make it virtually impossible to import Chinese EVs to the United States. That will continue to be the case under Trump, and it would have been the case if Kamala Harris had been elected.
On one hand, it’s important for America to have the strongest possible green industries to insulate us from future supply shocks and create as many jobs-of-the-future as possible. On the other hand, that isn’t necessarily the fastest route to emissions reductions. In a world where we’ve eliminated all tariffs on EVs, the U.S. market would be flooded with inexpensive, high-quality Chinese EVs. That would dramatically accelerate adoption, which would be good for the climate.
But that would also deal a crushing blow to the American car industry, which is why neither party will allow it. What may happen, though, is that Chinese car companies may build factories in Mexico, or even here in the U.S., just as many European and Japanese companies have, so that their cars wouldn’t be subject to tariffs. That will take time.
Of course, whatever happens will depend on Trump following through with his tariff promise. We’ve seen before how he declares victory even when he only does part of what he promised, which could happen here. Once he begins implementing his tariffs, his administration will be immediately besieged by a thousand industries demanding exemptions, carve-outs, and delays in the tariffs that affect them. Many will have powerful advocates — members of Congress, big donors, and large groups of constituents — behind them. It’s easy to imagine how “across-the-board” tariffs could, in practice, turn into Swiss cheese.
There’s no way to know yet which parts of the energy transition will be in the cheese, and which parts will be in the holes. The manufacturers can say that helping them will stick it to China; the installers may not get as friendly an audience with Trump and his team. And the EV tariffs certainly aren’t going anywhere.
There’s a great deal of uncertainty, but one thing is clear: This is a fight that will continue for the entirety of Trump’s term, and beyond.
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.