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Hell is shopping for eco poop bags.
As much as I’m aware that blaming the climate crisis on individual consumer choices is a favorite smokescreen of large corporations and fossil fuel companies, it still totally kills me to buy single-use plastic bags. So when my household recently ran out of the 900 black disposable litter bags we’d bought on Wirecutter’s recommendation eons ago, I decided to be a Good Person and replace them with the most environmentally friendly option I could find. I mean, how hard could it be?
Hoo boy.
What started out as a naïve quest to find the greenest pet waste receptacle has become my Joker origin story. It’s turned me into Mark Ruffalo in Dark Water, except instead of taking on Dupont, I’m hounding companies with names like The Original Poop Bag and Doggy Do Good for the chemical makeup of their “green” bags. I’ve been red-pilled on advanced recycling. And, worst of all, I still haven’t actually bought a replacement — because the entire “green,” “biodegradable,” “plant-based,” “compostable” pet waste bag industry is built on misdirections, half-truths, and outright lies.
This might seem like a ridiculous thing to have spent my time obsessing over (and I don’t entirely disagree with you). But the greenwashing and obfuscation around these bags is part of a bigger story. Plastics are the fossil fuel industry’s last stand. The renewable energy transition, albeit in fits and starts, is here. Seeing the writing on the wall, companies like ExxonMobil, Shell, and Saudi Aramco are heavily investing in petrochemicals, which are used to make plastic and are expected to make up half of oil demand growth between now and 2050, according to the International Energy Agency (IEA). As Armco president and CEO Amin Nasser has reassured his cohorts, oil demand from petrochemicals is expected to remain high “no matter which energy transition scenario plays out.”
But I’m getting ahead of myself.
This story starts with much cuter villains: my cats.
Meet the adorable antiheroes of this story, Marinka and Virginia:
This whole piece is just an excuse to show you a picture of my cats.Jeva Lange/Heatmap
These two cutie pies don’t know it, but they diligently contribute to the 5.1 million tons of feces produced by America’s dogs and cats every year. One estimate of the dog sector alone found that disposing of all that waste adds some 500 million single-use bags to U.S. landfills annually.
The evils of single-use plastic bags have already been drilled into most of our heads by now: They take years to break down and when they do, they don’t decompose but rather turn into tiny microplastics that end up in the soil, waterways, food chain, and even our bloodstreams and breast milk. There is one seemingly great and trendy way to get around this: compostable bags!
Alas, if something sounds too good to be true, it is. For one thing, the “compostable” claims made by eco-friendly pet companies are wildly misleading. Though brands like to imply that their bags decompose and disappear like any other yard waste, these products only break down within a year under the extremely specific conditions of a commercial composting facility — very, very few of which even accept pet waste in the first place. As a result, the FTC has flagged that “compostable claims for these products are generally untrue.”
A "compostable" poop bag available on Chewy.com...Chewy.com
...and why you should always read the fine print.Chewy.com
Companies love to exploit consumers’ lack of knowledge around these terms and processes, though, and are mostly free to do so since the language isn’t strongly regulated. Often brands will brag that their compostable bags meet the “ASTM D6400 standard,” which just means they meet the industrial composting standard — again, pretty useless for us in this context. (Touting the ASTM D6400 standard is also often a way for brands to hide that their bags are made with virgin fossil fuels … more on that soon).
The bigger question when it comes to composting pet waste is, do we even want to? Dogs and cats are meat eaters, which means their poop contains parasites and bacteria like roundworms and hookworms, which can last for years in the soil and even be passed onto humans if used as a fertilizer for edible plants. While maybe this doesn’t sound like it could be that big of a problem, it is: “A study by the Bureau of Sanitation found that 60% of the bacteria in a Marina Del Rey, [California,] waterway was because of animals, domesticated and feral,” the Los Angeles Times reports. Gross.
This is one time you’ll ever hear me say that dog people have it better, though. Done correctly, dog owners actually can home compost dog waste if they’re so inclined. That said, a major downside of compostable bags is that they seem to lead some people to the impression that they can litter trails and parks with their “green” bags since the bags will eventually “go away.” As previously discussed: No, they won’t.
Cat waste, however, never basically should end up in your garden: Felines carry the parasite Toxoplasma gondii, which can be passed onto humans via compost but has been found to kill wildlife, including the sea otters in California. “Toxoplasma infections contribute to the deaths of 8 percent of otters that are found dead, and is the primary cause of death in 3 percent,” The New York Times explains. While feral cats used to be blamed for spreading the parasite, new evidence shows house cats almost certainly are, too — through their waste.
So compostable pet waste bags are out. As one municipality put it, dog and cat poop should be treated like what it is: not a fertilizer, but a pollutant. That means it needs to be sequestered, one way or another, in a landfill.
Just going to nip this one in the bud. For the same reason that composting pet waste isn’t advisable due to parasites and bacteria in four-legged meat-eaters’ feces, flushable pet waste bags and litter aren’t a safe or responsible choice, either.
Many waste treatment facilities don’t kill Toxoplasma, so putting cat poop in the toilet just expedites its journey into your local waterway. Indeed, in responding to an utterly unhinged email I sent them about cat waste, the California Association of Sanitation Agencies confirmed that “the only thing that should be flushed is human waste and toilet paper.”
Biodegradable pet waste bags are what radicalized me.
At first glance, these bags appear to be the best option. A number of them come on the recommendation of the sustainability website Treehugger. The product websites usually feature blogs full of reassuring information about how harmful plastic waste is, or boast 1% for the Planet certifications, or mention something about being made of cornstarch. Even the bags are green!
And almost all of them, despite their lofty claims, are made using virgin fossil fuels.
Polybutylene Adipate Terephthalate, or “PBAT,” is a biodegradable plastic made from the petrochemicals butanediol, purified terephthalic acid (PTA), and adipic acid. Translation: Fossil fuels must be extracted in order to make any bag that contains PBAT, which is virtually all of them.
Companies are exceptionally sneaky about this, though. Some of the brands boast outright about using PBAT as a traditional plastic alternative, likely assuming customers have no idea what the acronym means and won’t bother looking it up. Yet as Alice Judge, a former veterinarian and co-founder of the U.K.-based sustainable pet website Pet Impact, found in her own investigation, PBAT rarely makes up less than 60% of these supposedly “plant-based” pet waste bags. “There is some really concerning greenwashing and outright lying” going on in the industry, she told me. “We’ve found brands that are very big, reputable brands even saying explicitly ‘100% plant-based’ and in the same sentence saying ‘made from cornstarch and PBAT.’”
"Zero plastic" — but contains a fossil fuel-derived chemical called PBAT.Sirwaggingtons.com
PBAT is typically combined with cornstarch or sugarcane, so a “plant-based” bag advertising those ingredients can often be a tip-off that a fossil fuel product is also involved. Additionally, companies will frequently flag on their packaging that they meet the ASTM D6400 or BPI standards, though these have no provisions against certifying biodegradable products that contain PBAT.
Pet waste bag companies appear to go out of their way to avoid these admissions. Doggy Do Good, a popular sustainable pet waste company, told me in an email they use a “proprietary bio-based material” for “60.9% of the composition of their bags” — that is, the expected amount of PBAT — and added that “this fully biodegradable copolymer is an excellent alternative to polyethylene.” When I pressed to clarify if their proprietary “biodegradable copolymer” in question was PBAT, as I suspected, they stopped replying to my emails. The Original Poop Bag, another green bag company, didn’t answer me at all when I asked if their bags contained the fossil fuel product.
Despite these avoidance tactics, biodegradable bag companies aren’t using PBAT because they nefariously want to ruin the planet. It’s just the dirty secret of the pet waste bag business. As Judge explained in a blog post, “All poo bags have to include PBAT for strength and structure. If they were 100% plant-based, they would turn to mush very quickly when wet, lack strength, and tear easily (some qualities you really don’t want in a poo bag!).”
Fair enough. It’s the lack of transparency that is the problem: Most of these companies are selling fossil fuel-based products to customers who think they’re buying bags made from corn.
What's the other 62%?Doggydogood.com
Ultimately, there are two ways to think about the impact of the pet waste bags you buy: the impact of the materials used to make them and the impact of their disposal. If the latter is your biggest concern — what happens to bags after they’ve been used — biodegradable and “plant-based” bags are still probably the best, if imperfect, option available on the market. You can throw them in the trash (where they belong because again, pet poop is a pollutant) but also know at least that they’ll eventually biodegrade in a landfill (it should be noted, though, that everything is technically biodegradable, and the word means nothing without specification about the timeline and conditions).
From an “input” perspective — what the bags are made of, and how — biodegradable and “plant-based” bags are a little less exciting. They require less virgin fossil fuel than buying a bag entirely made out of traditional single-use plastic, though some research has suggested there is “no real difference in lifetime emissions between” products made with traditional plastic and those made from bioplastics. By another estimate, greenhouse gas emissions “are typically higher for bio-based plastics than recycled and virgin plastics” because “corn requires large amounts of energy, space, and water to grow industrially” and “turning the corn starch (once cultivated) into a polymer requires considerable energy.”
There is one major exception to all of this: Avoid “oxo-biodegradable” products. These are banned in the EU because they break down, sure — but into toxic microplastics.
Though they’re comparatively rare, you can find “recycled plastic” pet waste bags on the market. They apparently cut down on virgin fossil fuels by recycling plastic that’s already been extracted. (Judge’s company, Pet Impact, sells its own poo bag made from recycled ocean plastic, oyster shell waste, and “about 25 to 30%” virgin fossil fuels).
Even 100% recycled materials have their problems.
But while recycled plastic sounds great, it has — you guessed it — its own complications.
“Chemical” or “advanced” plastic recycling is the current sweetheart of the oil and gas industry, despite evidence that recycling plastic isn’t nearly as good as it’s chalked up to be. For one thing, the process of converting old plastics into new plastics is incredibly emissions-intensive and thus requires the burning of fossil fuels to generate the required energy. The recycling process can also spew cancer-causing chemicals into the air that disproportionately poison low-income communities of color, like those in “Cancer Alley.”
This is a problem that stretches far beyond the humble poo bags: Hundreds of companies now sell everything from clothes to shoes to shampoo bottles on the boast that they’re made from recycled plastics. Yet “by feigning ‘recycling’ (really, downcycling) of plastic pollution, companies can divert attention from their role in perpetuating this crisis while pulling in profits,” stresses the advocacy group Plastic Pollution Coalition. Recycled plastic can be just another smokescreen when what’s really needed is a reduction of single-use plastics altogether.
But it was reducing single-use plastics that got me into this whole mess in the first place.
In March 2020, a month when nothing else of note was happening, New York City banned single-use carryout plastic bags, joining San Francisco and a number of other towns around the country. But like many pet owners, grocery store plastic bags had been our go-to litter scooping bags. As we became more conscious of single-use plastics in some parts of our lives, it led us to buy … a bunch of single-use plastics to use for our pets.
As the pandemic wore on, my husband and I eventually decided to fly across the country with Marinka and Virginia in order to be with our families. There, my stepmother introduced us to a revolutionary new poop bag. It didn’t require the extraction of any new fossil fuels, and while it doesn’t break down in a landfill, it also won’t poison any otters.
The name of this holy grail of poop bags? Trash.
Empty bread bags can become the perfect chutes for scoops of litter. Plastic packaging gets a second life as a final resting place for kitty unmentionables. Bags of dry cat food, once exhausted, can be refilled.
This isn’t a perfect solution, either (for example, “produce bags aren’t engineered to be particularly durable, nor to hold in liquids or odors,” Wirecutter warns with the confidence of experience). But if I’ve learned anything in this mad, scatological journey, it’s that there is no perfect solution. What satisfies one person’s environmental concerns — about greenhouse gas emissions, fossil fuel extraction, or waste and pollution — might not satisfy someone else’s. And at a certain point, you have to make a choice, and likely a compromise, and then move on to focusing on the things that make a bigger difference, like what you drive, where you get your power from, or what you eat.
All this is to say, the trash method works for me because it makes single-use plastics destined for the landfill anyway into twice-use plastics. And at least it allows me not to think about cat poop anymore.
I think I’ve done enough of that to last me a lifetime.
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Predicting the location and severity of thunderstorms is at the cutting edge of weather science. Now funding for that science is at risk.
Tropical Storm Barry was, by all measures, a boring storm. “Blink and you missed it,” as a piece in Yale Climate Connections put it after Barry formed, then dissipated over 24 hours in late June, having never sustained wind speeds higher than 45 miles per hour. The tropical storm’s main impact, it seemed at the time, was “heavy rains of three to six inches, which likely caused minor flooding” in Tampico, Mexico, where it made landfall.
But a few days later, U.S. meteorologists started to get concerned. The remnants of Barry had swirled northward, pooling wet Gulf air over southern and central Texas and elevating the atmospheric moisture to reach or exceed record levels for July. “Like a waterlogged sponge perched precariously overhead, all the atmosphere needed was a catalyst to wring out the extreme levels of water vapor,” meteorologist Mike Lowry wrote.
More than 100 people — many of them children — ultimately died as extreme rainfall caused the Guadalupe River to rise 34 feet in 90 minutes. But the tragedy was “not really a failure of meteorology,” UCLA and UC Agriculture and Natural Resources climate scientist Daniel Swain said during a public “Office Hours” review of the disaster on Monday. The National Weather Service in San Antonio and Austin first warned the public of the potential for heavy rain on Sunday, June 29 — five days before the floods crested. The agency followed that with a flood watch warning for the Kerrville area on Thursday, July 3, then issued an additional 21 warnings, culminating just after 1 a.m. on Friday, July 4, with a wireless emergency alert sent to the phones of residents, campers, and RVers along the Guadalupe River.
The NWS alerts were both timely and accurate, and even correctly predicted an expected rainfall rate of 2 to 3 inches per hour. If it were possible to consider the science alone, the official response might have been deemed a success.
Of all the storm systems, convective storms — like thunderstorms, hail, tornadoes, and extreme rainstorms — are some of the most difficult to forecast. “We don’t have very good observations of some of these fine-scale weather extremes,” Swain told me after office hours were over, in reference to severe meteorological events that are often relatively short-lived and occur in small geographic areas. “We only know a tornado occurred, for example, if people report it and the Weather Service meteorologists go out afterward and look to see if there’s a circular, radial damage pattern.” A hurricane, by contrast, spans hundreds of miles and is visible from space.
Global weather models, which predict conditions at a planetary scale, are relatively coarse in their spatial resolution and “did not do the best job with this event,” Swain said during his office hours. “They predicted some rain, locally heavy, but nothing anywhere near what transpired.” (And before you ask — artificial intelligence-powered weather models were among the worst at predicting the Texas floods.)
Over the past decade or so, however, due to the unique convective storm risks in the United States, the National Oceanic and Atmospheric Administration and other meteorological agencies have developed specialized high resolution convection-resolving models to better represent and forecast extreme thunderstorms and rainstorms.
NOAA’s cutting-edge specialized models “got this right,” Swain told me of the Texas storms. “Those were the models that alerted the local weather service and the NOAA Weather Prediction Center of the potential for an extreme rain event. That is why the flash flood watches were issued so early, and why there was so much advanced knowledge.”
Writing for The Eyewall, meteorologist Matt Lanza concurred with Swain’s assessment: “By Thursday morning, the [high resolution] model showed as much as 10 to 13 inches in parts of Texas,” he wrote. “By Thursday evening, that was as much as 20 inches. So the [high resolution] model upped the ante all day.”
Most models initialized at 00Z last night indicated the potential for localized excessive rainfall over portions of south-central Texas that led to the tragic and deadly flash flood early this morning. pic.twitter.com/t3DpCfc7dX
— Jeff Frame (@VORTEXJeff) July 4, 2025
To be any more accurate than they ultimately were on the Texas floods, meteorologists would have needed the ability to predict the precise location and volume of rainfall of an individual thunderstorm cell. Although models can provide a fairly accurate picture of the general area where a storm will form, the best current science still can’t achieve that level of precision more than a few hours in advance of a given event.
Climate change itself is another factor making storm behavior even less predictable. “If it weren’t so hot outside, if it wasn’t so humid, if the atmosphere wasn’t holding all that water, then [the system] would have rained and marched along as the storm drifted,” Claudia Benitez-Nelson, an expert on flooding at the University of South Carolina, told me. Instead, slow and low prevailing winds caused the system to stall, pinning it over the same worst-case-scenario location at the confluence of the Hill Country rivers for hours and challenging the limits of science and forecasting.
Though it’s tempting to blame the Trump administration cuts to the staff and budget of the NWS for the tragedy, the local NWS actually had more forecasters on hand than usual in its local field office ahead of the storm, in anticipation of potential disaster. Any budget cuts to the NWS, while potentially disastrous, would not go into effect until fiscal year 2026.
The proposed 2026 budget for NOAA, however, would zero out the upkeep of the models, as well as shutter the National Severe Storms Laboratory in Norman, Oklahoma, which studies thunderstorms and rainstorms, such as the one in Texas. And due to the proprietary, U.S.-specific nature of the high-resolution models, there is no one coming to our rescue if they’re eliminated or degraded by the cuts.
The impending cuts are alarming to the scientists charged with maintaining and adjusting the models to ensure maximum accuracy, too. Computationally, it’s no small task to keep them running 24 hours a day, every day of the year. A weather model doesn’t simply run on its own indefinitely, but rather requires large data transfers as well as intakes of new conditions from its network of observation stations to remain reliable. Although the NOAA high-resolution models have been in use for about a decade, yearly updates keep the programs on the cutting edge of weather science; without constant tweaks, the models’ accuracy slowly degrades as the atmosphere changes and information and technologies become outdated.
It’s difficult to imagine that the Texas floods could have been more catastrophic, and yet the NOAA models and NWS warnings and alerts undoubtedly saved lives. Still, local Texas authorities have attempted to pass the blame, claiming they weren’t adequately informed of the dangers by forecasters. The picture will become clearer as reporting continues to probe why the flood-prone region did not have warning sirens, why camp counselors did not have their phones to receive overnight NWS alarms, why there were not more flood gauges on the rivers, and what, if anything, local officials could have done to save more people. Still, given what is scientifically possible at this stage of modeling, “This was not a forecast failure relative to scientific or weather prediction best practices. That much is clear,” Swain said.
As the climate warms and extreme rainfall events increase as a result, however, it will become ever more crucial to have access to cutting-edge weather models. “What I want to bring attention to is that this is not a one-off,” Benitez-Nelson, the flood expert at the University of South Carolina, told me. “There’s this temptation to say, ‘Oh, it’s a 100-year storm, it’s a 1,000-year storm.’”
“No,” she went on. “This is a growing pattern.”
On the Texas floods, wind and solar restrictions, and an executive order
Current conditions: An extreme heat warning is in place for Phoenix, which could reach 113 degrees Fahrenheit today • Flooding in central North Carolina has killed at least one person after two months’ worth of rain fell in 24 hours • Parts of the U.K. this week will experience their third heatwave in less than a month.
The catastrophic flooding in central Texas that claimed more than 100 lives late last week was intensified by human-driven climate change, according to a rapid attribution report by ClimaMeter, an experimental framework funded by the European Union and the French National Centre for Scientific Research. The researchers compared historic and contemporary weather patterns in Texas’ Hill Country and found that conditions going into Fourth of July weekend were up to 7% wetter than during similar events in the past. “These results suggest that meteorological conditions similar to those of the July 2025 Texas floods are becoming more favorable for extreme precipitation, in line with what would be expected under continued global warming,” the researchers wrote, concluding that “natural variability alone cannot explain the changes in precipitation associated with this very exceptional meteorological condition.”
The development of new wind and solar power plants is “now heavily restricted or outright banned in about one in five counties across the country,” according to a major new survey of public records and local ordinances by my colleagues Robinson Meyer and Charlie Clynes. Their report found bans and restrictions — such as a rule that wind turbines must be placed a certain number of miles from homes, or that solar farms cannot take up more than 1% of a county’s agricultural land — in a total of 605 U.S. counties, including at least 59 municipalities in the more-renewables-friendly Northeast. In total, the bans and restrictions on renewables cover approximately 17% of the continental United States’ total land mass.
Robinson and Charlie’s findings have not been previously reported, and their research involved calling thousands of counties where laws, in some cases, were not in existing public databases. You can access the full project- and county-level data and associated risk assessments via Heatmap Pro, here.
In an executive order on Monday, President Trump directed the Treasury Department to issue “new and revised guidance” restricting which projects will still qualify for wind and solar tax credits. The order builds on the repeal of renewable energy tax credits in the One Big Beautiful Bill Act, which had stipulated that such projects would need to begin construction within a year and come online by 2028 to be eligible for the subsidies. Now the government will take a stricter approach to defining “the beginning of construction” to prevent “the artificial acceleration or manipulation of eligibility” by limiting credits to projects in which “a substantial portion of a subject facility has been built.”
Freedom Caucus members had described the tax credits as a sticking point during their late negotiations over the bill. As my colleagues Jael Holzman and Katie Brigham previously reported, North Carolina Republican Representative Ralph Norman alluded to a conversation with Trump in which the president had assured him that he was “going to deal with [the tax credits] in his own way.” It appears the executive order is the follow-through on that promise. Additionally, Trump’s executive order called for the Department of the Interior to determine whether any of its policies, practices, or regulations “provide preferential treatment to wind and solar facilities in comparison to dispatchable energy sources” and revise them accordingly.
An Energy Department report released Monday warned that blackouts in the U.S. could “increase by 100% in 2030” if the country continues to close its coal and natural gas power plants. The report, completed at the direction of an April executive order by President Trump, anticipates 209 gigawatts of new generation by 2030 to replace 104 gigawatts of retirements — but “only 22 gigawatts would come from firm baseload generation sources,” so that, “even assuming no retirements, the model found increased risk of outages in 2030 by a factor of 34.” The DOE concluded that the U.S. grid “will not be able to sustain the combined impact of coal and other plant closures, an overreliance on intermittent energy sources like wind and solar, and data center growth, highlighting the urgency of increasing dispatchable energy output.”
The DOE’s report sets the stage for the department to continue to prevent the phase-out of old fossil fuel power plants and open new facilities. Many are skeptical of the agency’s logic, however, pointing to renewable-heavy grid success stories like Texas. The Department of Energy “appears to exaggerate the risk of blackouts and undervalue the contributions of entire resource classes, like wind, solar, and battery storage,” Caitlin Marquis, the managing director at Advanced Energy United, said, per Axios.
On Monday, the Trump administration sent letters to 14 countries warning them they’ll face tariffs of up to 40% if they don’t reach a trade deal with the U.S. by an August 1 deadline. Significantly, automaking giants Japan and South Korea — which each account for about 4% of U.S. imports, per The New York Times — were among the recipients, and face 25% tariffs according to the letters. As my colleague Jael Holzman previously reported, Japan in particular had been “positioned to be an ally in U.S. efforts to wean off China-linked minerals and signed a minerals trade agreement under Biden,” with the imposition of such tariffs potentially threatening to tank America’s own “mineral supply chain renaissance.”
Tom Nicholson/Getty Images
The Seine River opened for swimming last weekend for the first time since 1923, following an extensive effort to upgrade the city’s sewer systems and water treatment facilities. “I never imagined being in the water close to the Eiffel Tower,” one swimmer told Reuters.
Current conditions: The remnants of Tropical Storm Chantal will bring heavy rain and potential flash floods to the Carolinas, southeastern Virginia, and southern Delaware through Monday night • Two people are dead and 300 injured after Typhoon Danas hit Taiwan • Life-threatening rainfall is expected to last through Monday in Central Texas.
Jim Vondruska/Getty Images
The flash floods in Central Texas are expected to become one of the deadliest such events in the past 100 years, with authorities updating the death toll to 82 people on Sunday night. Another 41 people are still missing after the storms, which began Thursday night and raised the Guadalupe River some 26 feet in less than an hour, providing little chance for holiday weekend campers and RVers to escape.
Although it’s far too soon to definitively attribute the disaster to climate change, a warmer atmosphere is capable of holding more moisture and producing heavy bursts of life-threatening rainfall. Disasters like the one in Texas are one of the “hardest things to predict that’s becoming worse faster than almost anything else in a warming climate, and it’s at a moment where we’re defunding the ability of meteorologists and emergency managers to coordinate,” Daniel Swain of the University of California Agriculture and Natural Resources told the Los Angeles Times. Meteorologists who spoke to Wired argued that the National Weather Service “accurately predicted the risk of flooding in Texas and could not have foreseen the extreme severity of the storm” ahead of the event, while The New York Times noted that staffing shortages at the agency following President Trump’s layoffs potentially resulted in “the loss of experienced people who would typically have helped communicate with local authorities in the hours after flash flood warnings were issued overnight.”
President Trump announced this weekend that his administration plans to send up to 15 letters on Monday to important trade partners detailing their tariff rates. Though Trump didn’t specify which countries would receive such letters or what the rates could be, he said the tariffs would go into effect on August 1 — an extension from the administration’s 90-day pause through July 9 — and range “from maybe 60% or 70% tariffs to 10% and 20% tariffs.” Treasury Secretary Scott Bessent added on CNN on Sunday that the administration would subsequently send an additional round of letters to 100 less significant trade partners, warning them that “if you don’t move things along” with trade negotiations, “then on August 1, you will boomerang back to your April 2 tariff level.” Trump’s proposed tariffs have already rattled industries as diverse as steel and aluminum, oil, plastics, agriculture, and bicycles, as we’ve covered extensively here at Heatmap. Trump’s weekend announcement also sent jitters through global markets on Monday morning.
President Trump’s gutting of the Inflation Reduction Act with the signing of the budget reconciliation bill last week will add an extra 7 billion tons of emissions to the atmosphere by 2030, a new analysis by Climate Brief has found. The rollback on renewable energy credits and policy means that “U.S. emissions are now set to drop to just 3% below current levels by 2030 — effectively flatlining — rather than falling 40% as required to hit the now-defunct [Paris Agreement] target,” Carbon Brief notes. As a result, the U.S. will be about 2 billion tons short of its emissions goal by 2030, adding an emissions equivalent of “roughly the annual output of Indonesia, the world’s sixth-largest emitter.”
To reach its conclusions, Carbon Brief utilized modeling by Princeton University’s REPEAT Project, which examined how the current obstacles facing U.S. wind and solar energy will impact U.S. emissions targets, as well as the likely slowdown in electric vehicle sales and energy efficiency upgrades due to the removal of subsidies. “Under this new set of U.S. policies, emissions are only expected to be 20% lower than 2005 levels by 2030,” Carbon Brief writes.
Engineering giant SKF announced late last week that it had set a new world record for tidal turbine reliability, with its systems in northern Scotland having operated continuously for over six years at 1.5 megawatts “without the need for unplanned or disruptive maintenance.” The news represents a significant milestone for the technology since “harsh conditions, high maintenance, and technical challenges” have traditionally made tidal systems difficult to implement in the real world, Interesting Engineering notes. The pilot program, MayGen, is operated by SAE Renewables and aims, as its next step, to begin deploying 3-megawatt powertrains for 30 turbines across Scotland, France, and Japan starting next year.
Satellites monitoring the Southern Ocean have detected for the first time a collapse and reversal of a major current in the Atlantic Meridional Overturning Circulation. “This is an unprecedented observation and a potential game-changer,” said physicist Marilena Oltmanns, the lead author of a paper on the finding, adding that the changes could “alter the Southern Ocean’s capacity to sequester heat and carbon.”
A breakthrough in satellite ocean observation technology enabled scientists to recognize that, since 2016, the Southern Ocean has become saltier, even as Antarctic sea ice has melted at a rate comparable to the loss of Greenland’s ice. The two factors have altered the Southern Ocean’s properties like “we’ve never seen before,” Antonio Turiel, a co-author of the study, explained. “While the world is debating the potential collapse of the AMOC in the North Atlantic, we’re seeing that the Southern Ocean is drastically changing, as sea ice coverage declines and the upper ocean is becoming saltier,” he went on. “This could have unprecedented global climate impacts.” Read more about the oceanic feedback loop and its potential global consequences at Science Daily, here.
The French public research university Sciences Po will open the Paris Climate School in September 2026, making it the first school in Europe to offer a “degree in humanities and social sciences dedicated to ecological transition.” The first cohort will comprise 100 master’s students in an English-language program. “Faced with the ecological emergency, it is essential to train a new generation of leaders who can think and act differently,” said Laurence Tubiana, the dean of the Paris Climate School.