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Technology

The World Needs Way More Carbon Dioxide Removal

On getting rid of legacy emissions, groundwater, and geoengineering

The World Needs Way More Carbon Dioxide Removal
Heatmap Illustration/Getty Images

Current conditions: A large wildfire is burning out of control in northwestern Turkey • Intense storms killed at least 11 people in South Africa • It will be 109 degrees Fahrenheit in Phoenix today, and tomorrow will be hotter.

THE TOP FIVE

1. Report: Global carbon dioxide removal must quadruple

A team of international researchers this week published a new report on the state of carbon dioxide removal (CDR) as it relates to global climate goals. The top-line takeaway is that CDR must quadruple if we want to stay in line with the goal of limiting global warming to 1.5 degrees Celsius. While stopping new greenhouse gas emissions is the top priority in curbing global warming, experts agree CDR will be needed to address legacy emissions, which can remain in the atmosphere for decades.

Current CDR efforts – from reforestation to direct air capture technology – remove about 2 billion metric tons of CO2 from the atmosphere every year. That’s far short of the 7-9 billion metric tons that will need to be removed annually by 2050. But the report’s authors say there are signs that CDR development is slowing down. They call for more investment to support the “high ambitions” of CDR companies, and want countries to weave CDR policies into their national climate action plans to spark demand and help CDR scale. Currently just 1.1% of investment in climate-tech startups goes toward CDR. In April, a report found that the U.S. will need to spend $100 billion per year by 2050 to make CDR a viable climate solution.

One really interesting insight from the report is that grant money is flowing steadily toward CDR research and development, especially in the U.S. and Canada: There were fewer than 50 third-party research grants for CDR in the year 2000, compared to 1,160 in 2022.

State of CDR report

Somewhat relatedly, Swiss carbon removal company Climeworks yesterday unveiled new “generation 3” technology that it said can suck up twice as much carbon from the atmosphere using half the amount of energy as its previous designs.

2. Researchers warn climate change is heating Earth’s groundwater

A new study published in the journal Nature Geoscience finds that the Earth’s groundwater is warming up due to climate change. For the study, researchers created a model to estimate changes in groundwater temperatures in varying global warming scenarios. Their model shows that by the end of the century, groundwater could be between 2.1 and 3.5 degrees Celsius (or between 3.8 and 6.3 degrees Fahrenheit) warmer on average than it is today. This would be bad news for ecosystems that rely on groundwater, as well as for humans: “As groundwater warms, there is increased risk of pathogen growth which impacts drinking water quality – potentially affecting the lives of many people,” said co-author Dr. Gabriel Rau of the University of Newcastle. The warming will vary by region, but parts of North America will see some of the most intense warming rates.

3. China unveils world’s largest solar farm

The world’s largest solar farm just came online. The 5-gigawatt, 200,000-acre farm is located in China’s Xinjiang region, and was officially connected to China’s grid on Monday. It’s one piece of China’s larger “megabase” initiative to install 455 GW of wind and solar. The new farm will generate about 6 billion kilowatt hours of electricity each year, making it “powerful enough to meet the electricity demands of a country the size of Luxembourg or Papua New Guinea,” as Anthony Cuthbertson at the Independent put it. The second- and third-largest solar farms (by capacity) are also located in China. A recent report from the International Energy Agency called China the world’s “renewable powerhouse” because it accounts for nearly 60% of the world’s new renewable capacity that will become operational by 2028.

4. German floods spread into neighboring countries

Southern Germany has been absolutely hammered by torrential rain in recent days, resulting in overflowing rivers and deadly floods. Five people have died in the disaster. To give you a sense of how bad the situation is, more than a month’s worth of rain fell in the region between Friday and Monday, and water levels in the city of Passau rose by 32 feet. German Chancellor Olaf Scholz reminded everyone that this kind of weather is not normal, saying that “we must not neglect the task of halting man-made climate change.”

Cleanup begins in a flooded town in Germany.Thomas Niedermueller/Getty Images

The rain is easing up now and some towns are starting their cleanup efforts, but all that water has to go somewhere, and BBC reports it’s headed down the Danube River into Austria, Hungary, and possibly Slovakia. Already the river burst its banks in the Austrian city of Linz, and Austria has halted all shipping activity in the river.

5. California city votes to cancel contentious geoengineering study

A first-of-its-kind geoengineering research project in California has been officially canceled. The research, conducted by a team from the University of Washington, involved spraying sea salt aerosol particles into the air using an instrument situated on a decommissioned aircraft carrier in Alameda, California. This process has been pitched as a way to brighten clouds and reflect the sun’s rays to cool the planet. Because studies on manipulating the climate are so controversial, the researchers kept the project on the downlow until it was up and running, and this lack of transparency – rather than any safety concerns – seems to have really rubbed city officials the wrong way. The Alameda City Council voted this morning to reject the experiment. “You didn’t start out on the right foot,” Alameda Mayor Marilyn Ezzy Ashcraft told the researchers.

The dispute may be a little preview of things to come. “There’s a fair number of people who think there shouldn’t be research [on geoengineering], and these early experiments have become a proxy battleground for this larger question about how to think about the development of these technologies,” David Keith, director of the Climate Systems Engineering Initiative at the University of Chicago, toldThe Washington Post.

THE KICKER

The Thomas Edison Birthplace Museum in Ohio is now powered by rooftop solar.

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Economy

AM Briefing: Liberation Day

On trade turbulence, special election results, and HHS cuts

Trump’s ‘Liberation Day’ Tariffs Loom
Heatmap Illustration/Getty Images

Current conditions: A rare wildfire alert has been issued for London this week due to strong winds and unseasonably high temperatures • Schools are closed on the Greek islands of Mykonos and Paros after a storm caused intense flooding • Nearly 50 million people in the central U.S. are at risk of tornadoes, hail, and historic levels of rain today as a severe weather system barrels across the country.

THE TOP FIVE

1. Trump to roll out broad new tariffs

President Trump today will outline sweeping new tariffs on foreign imports during a “Liberation Day” speech in the White House Rose Garden scheduled for 4 p.m. EST. Details on the levies remain scarce. Trump has floated the idea that they will be “reciprocal” against countries that impose fees on U.S. goods, though the predominant rumor is that he could impose an across-the-board 20% tariff. The tariffs will be in addition to those already announced on Chinese goods, steel and aluminum, energy imports from Canada, and a 25% fee on imported vehicles, the latter of which comes into effect Thursday. “The tariffs are expected to disrupt the global trade in clean technologies, from electric cars to the materials used to build wind turbines,” explained Josh Gabbatiss at Carbon Brief. “And as clean technology becomes more expensive to manufacture in the U.S., other nations – particularly China – are likely to step up to fill in any gaps.” The trade turbulence will also disrupt the U.S. natural gas market, with domestic supply expected to tighten, and utility prices to rise. This could “accelerate the uptake of coal instead of gas, and result in a swell in U.S. power emissions that could accelerate climate change,” Reutersreported.

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The Least-Noticed Climate Scandal of the Trump Administration

Rob and Jesse catch up on the Greenhouse Gas Reduction Fund with former White House official Kristina Costa.

Lee Zeldin.
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The Inflation Reduction Act dedicated $27 billion to build a new kind of climate institution in America — a network of national green banks that could lend money to companies, states, schools, churches, and housing developers to build more clean energy and deploy more next-generation energy technology around the country.

It was an innovative and untested program. And the Trump administration is desperately trying to block it. Since February, Trump’s criminal justice appointees — led by Ed Martin, the interim U.S. attorney for the District of Columbia — have tried to use criminal law to undo the program. After failing to get the FBI and Justice Department to block the flow of funds, Trump officials have successfully gotten the program’s bank partner to freeze relevant money. The new green banks have sued to gain access to the money.

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Funding Cuts Are Killing Small Farmers’ Trust in Climate Policy

That trust was hard won — and it won’t be easily regained.

A barn.
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Spring — as even children know — is the season for planting. But across the country, tens of thousands of farmers who bought seeds with the help of Department of Agriculture grants are hesitating over whether or not to put them in the ground. Their contractually owed payments, processed through programs created under the Biden administration, have been put on pause by the Trump administration, leaving the farmers anxious about how to proceed.

Also anxious are staff at the sustainability and conservation-focused nonprofits that provided technical support and enrollment assistance for these grants, many of whom worry that the USDA grant pause could undermine the trust they’ve carefully built with farmers over years of outreach. Though enrollment in the programs was voluntary, the grants were formulated to serve the Biden administration’s Justice40 priority of investing in underserved and minority communities. Those same communities tend to be wary of collaborating with the USDA due to its history of overlooking small and family farms, which make up 90% of the farms in the U.S. and are more likely to be women- or minority-owned, in favor of large operations, as well as its pattern of disproportionately denying loans to Black farmers. The Biden administration had counted on nonprofits to leverage their relationships with farmers in order to bring them onto the projects.

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