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The State of the Science 1 Year On: Academia and Research

EOS - Thu, 01/15/2026 - 13:59
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Part 5 of “The State of the Science 1 Year On,” a report from Eos and AGU

The State of the Science 1 Year On Overview

In its first year, the second administration of President Donald Trump has taken numerous actions, in the form of both sweeping policy initiatives and directives targeted at specific groups or institutions, to reshape academia and higher education. Many have affected academic scientists’ funding and ability to pursue their research across an array of disciplines; others have presented new challenges and burdens for current and aspiring students.

These actions have not gone unchallenged. Insiders and observers have called out threats to academic freedom and autonomy, and some schools, states, professional organizations, and individuals have pushed back on campuses and in the courts. Others have negotiated with the administration in their attempts to navigate the rapidly shifting landscape of U.S. higher education.

Funding Cuts Hit Research Hard

Among the highest-profile actions of the Trump administration aimed at academia have been its attempts to cancel or claw back billions of dollars in federal funding awarded to specific universities, including grants for scientific and medical research. The administration has also raised taxes on wealthy universities and, at times, threatened the tax-exempt status of some (most notably Harvard University) as punishments for alleged wrongdoings or ideological differences. These schools have responded in different ways to try to preserve their funding.

When the administration announced in March that it would review federal contracts and grants with Harvard—and soon thereafter demanded a litany of changes to the school’s hiring, admissions, and operations policies to “maintain Harvard’s financial relationship with the federal government”—Harvard rejected the demands, with university president Alan Garber saying the school would not “surrender its independence.” The administration countered by freezing more than $2 billion in grants. Harvard then sued, arguing the administration was improperly overreaching with its funding cuts.

Most other universities threatened with funding pullbacks have at least partially acceded to administration demands to reinstate federal research money. Columbia University agreed in July to pay a $200 million fine and change hiring and admissions practices to restore $400 million in funding. Brown University similarly made a deal to preserve more than $500 million by agreeing to make administrative policy changes and to put $50 million toward state workforce programs.

Cornell University and Northwestern University later struck agreements too.

Federal judges have handed some victories to schools, victories that may be temporary if rulings are appealed. In response to lawsuits filed by faculty groups at the University of California, Los Angeles, and the American Association of University Professors (AAUP), for example, a judge issued several orders to block a $1.2 billion fine and restore hundreds of grants from the National Science Foundation (NSF) and National Institutes of Health (NIH). And in September, Harvard prevailed in its suit against the government.

The turmoil, uncertainty, and interruptions from monthslong conflicts with the administration have slowed or stalled scientific research projects on campuses.

Even with court victories and negotiated deals reinstating funding, the turmoil, uncertainty, and interruptions from monthslong—and in some cases ongoing—conflicts with the administration have slowed or stalled scientific research projects on campuses. They have also led numerous universities and colleges to cut spending through hiring freezes and layoffs.

Academic science has been under pressure not only through the administration’s targeting of universities directly but also through its efforts to remake the federal grantmaking process, reduce the amounts and types of external research funded, and reduce budget appropriations for scientific research by more than 20% through large-scale cutbacks and reorganizations in federal science agencies. Unsurprisingly, the administration’s actions are having ripple effects for higher education, business (among companies who supply scientific products, for instance), and public health.

Substantial changes at NSF, which provides roughly a quarter of federal funds for basic research at colleges and universities, began almost immediately upon Trump’s return to office. Expert grant review panels were canceled in late January. By early February, staffers were reviewing keywords in thousands of existing projects to screen for any language that might conflict with early executive orders related to the recognition of genders and curtailing diversity, equity, and inclusion (DEI) efforts. Grant pauses and holdups continued through spring as reviews expanded to target awards for research on climate change, environmental and social justice, and misinformation. In May, NSF announced plans to abolish dozens of divisions. And in December, the administration said it would dismantle the NSF-sponsored National Center for Atmospheric Research (NCAR). The decision elicited strong criticism—and support for NCAR—from numerous scientists, including many attending AGU’s Annual Meeting when the announcement was made.

Despite the upheaval, NSF still provided more than $8 billion in funding in fiscal year (FY) 2025, according to an analysis by Science. Yet the many changes in grant reviews and awards slowed the process considerably and created confusion both within the agency and among researchers who depend on it. The changes also led to the termination of thousands of existing grants as well as a 20% reduction in the number of new grants awarded.

Other agencies experienced upheavals in funding, grantmaking, and staffing. At NOAA, these upheavals included the proposal to eliminate the agency’s primary research arm (the Office of Oceanic and Atmospheric Research) as well as funding for climate research facilities and grants. Further, multiple key datasets and data products used by scientists, decisionmakers, and companies—such as the Billion-Dollar Weather and Climate Disasters product and the Sea Ice Index (maintained by the National Snow and Ice Data Center)—have been discontinued or lost support. These losses prompted grassroots efforts by scientists and institutions both domestically and internationally, as well as a push in Congress, to preserve imperiled datasets.

At NASA, concerns over near-term funding and policy directions led to delayed calls for grant requests, a decrease in grants awarded, substantial staff cuts, and facility closures. Uncertainties about the status of ongoing and future science missions have also left the availability of mission datasets up in the air.

Meanwhile, the Department of Energy (DOE), the country’s single biggest funding agency for physical science, is collapsing six scientific panels into a single Office of Science Advisory Committee. The new committee will, according to an agency statement, still include “leaders from academia, industry, and National Laboratories,” but the news left some scientists concerned about losing important avenues of input to the agency and the possibility that political appointees may have greater say over DOE science.

At the EPA and NIH, too, significant reductions in force, uncertainty stemming from proposals to end data collection (e.g., through EPA’s Greenhouse Gas Reporting Program), and changes and cutbacks in grantmaking are affecting research inside and outside these agencies. EPA and NIH each ended hundreds of awards, most supporting work on administration-targeted topics such as environmental justice, climate, DEI, and transgender health.

However, federal judges halted some grant terminations, and NIH agreed to review grant proposals that were previously denied, withdrawn, or frozen because of administration directives.

To go along with the thousands of individual research projects lost or limited by terminated grants, cuts at federal agencies have also hit projects involving and serving scientists across sectors. Support has been pulled for, among other projects, the Cosmic Microwave Background Stage 4, which would have built new radio telescopes to detect clues about the origins of the universe, as well as the country’s only icebreaker supporting Antarctic research.

And in April, the government announced it was canceling funding for and releasing scientists involved in producing the next National Climate Assessment (NCA), due to be released in 2028. Published quadrennially through the U.S. Global Change Research Program (which the administration also ended), the previous five NCAs represented the consensus, science-based evaluation of how climate change is and will continue affecting the country’s environment, economy, and people. In response to the cancellation, AGU and the American Meteorological Society announced they were partnering to create a special research collection “to sustain the momentum of the sixth National Climate Assessment almost a year into the process.”

New Obstacles for Students

A signature goal of Trump’s second administration—and one that was aggressively advanced during its first year—is to dismantle the Department of Education (ED) as much as possible.

In mid-February, Linda McMahon, during her confirmation hearing to become secretary of education, signaled how the administration would aim to relocate ED programs to other departments. That announcement came on the heels of hundreds of millions of dollars in cuts to an ED office tracking student progress and Trump saying he wanted McMahon to “put herself out of a job.” In March, an executive order directed McMahon to “facilitate the closure” of ED.

Authority to abolish the department ultimately rests with Congress, but the administration has nonetheless been able to push its agenda forward through dramatic cuts and reorganizations. It reshaped department advisory boards, for example, such as those focused on education science and the accreditation of higher education institutions. The administration also ended funding to grant programs designated specifically for minority-serving institutions and selectively terminated or rejected grants to schools that mentioned DEI in their grant applications.

In November, ED said it would move several offices, including the Office of Postsecondary Education, to the Department of Labor (DOL). Critics argued that moving programs does little to clear red tape and instead imperils services because DOL is not equipped to run them.

Disruptions to federal education funding are not limited to ED. After NSF gave out far fewer awards than usual through its Graduate Research Fellowship Program (GRFP) in the spring, for example, its months-delayed release of guidance for the next round of awards caused substantial confusion among would-be applicants. When the GRFP guidance was released in September, students learned they had less time than usual to complete applications and that second-year Ph.D. students were no longer eligible to apply.

The major shift in GRFP policy left thousands of budding scientists—some of whom purposefully waited until their second year of graduate school to apply to improve their chances of success—without an opportunity to even be considered. Earlier in the year, funding uncertainties at NSF also frustrated undergraduates as the agency reduced support to schools through its Research Experiences for Undergraduates program.

The One Big Beautiful Bill, signed into law in July, as well as subsequent decisions made significant changes to student loan and loan forgiveness plans, including borrowing maximums, the types and lengths of loan repayment plans available, and student eligibility for Pell Grants. And even before July, administration moves to slow or stop the application process for loan forgiveness under certain conditions led to new confusion for borrowers and drew a lawsuit from the American Federation of Teachers, which resulted in a settlement to resume processing loan forgiveness applications.

International students already in the United States or looking to apply have found themselves in limbo as well because of the administration’s approaches to immigration, research security, and other concerns. Early in the year, alongside incidents of international students being arrested and detained, the administration revoked visas for more than 1,500 students. These actions sowed confusion and fear among the nation’s international student body, which numbers more than 1 million. International students account for only about 6% of enrollment in U.S. colleges but make up the majority in many graduate science, technology, engineering, and mathematics fields.

Even after restoring most of the canceled visas in April, the administration suggested it would continue pursuing revocations. Indeed, just a month later it announced it would temporarily stop scheduling interviews for new student visas and would start revoking visas for Chinese students studying in “critical fields” out of concern that these students’ access to U.S. training and funding were benefiting China’s government.

These measures appear to have had a chilling effect on the interest or ability of students from abroad to study in the United States. International student applications dropped 9% compared to the prior year, according to the Institute of International Education, and the size of the international student body in graduate programs dropped by 12%.

The new obstacles for both domestic and international students, combined with lost funding and research support, contributed to decisions by graduate programs at many schools to scale back or altogether forgo admissions of new students. “If this keeps up,” one scientist told Nature, “it would be really devastating for the field, because this is where the next generation of experts comes from.”

Fears for Academic Freedom

Many of the Trump administration’s actions regarding higher education and academic research have been aimed at pressuring the administrators and faculty to reshape their schools’ curricula and programming.

Many of the Trump administration’s actions regarding higher education and academic research have been aimed at pressuring administrators and faculty to reshape their schools’ curricula and programming. Critics saw these actions as open threats to academic freedom.

In May, Trump issued an executive order on “Restoring Gold Standard Science.” It calls out a supposed crisis of public confidence in science amid perceived misuses of data and purportedly seeks to bolster research that is reproducible and transparent. Although these are widely accepted qualities of good science, critics argued the order would only undermine confidence in science while opening the door to greater administration control over federally funded research.

In August, Trump issued another, more focused executive order on “Improving Oversight of Federal Grantmaking,” which stipulates that senior political appointees review and approve new funding opportunities and grant applications.

When the president threatened to punish university accrediting organizations for focusing on DEI-related criteria, the AAUP accused the administration of weaponizing the accreditation process and called it “another attempt to dictate what is taught, learned, said and done by college students and instructors.”

Trump’s campaign to reshape universities reached a crescendo in early October when it sent letters to nine schools asking them to sign a “Compact for Academic Excellence in Higher Education.”

Trump’s 2025 campaign to reshape universities reached a crescendo in early October when it sent letters to nine schools asking them to sign a “Compact for Academic Excellence in Higher Education” in exchange for “multiple positive benefits.” The compact comprised a long list of administration goals, such as banning consideration of demographics in admissions, aid, and hiring decisions; ending “institutional units that purposefully punish, belittle, and even spark violence against conservative ideas”; and recognizing strict definitions of gender. The compact’s touted benefits included greater access to funding, higher payments for overhead costs, and administration acknowledgment that schools “are complying with civil rights law and pursuing Federal priorities with vigor.”

Seven of the nine schools rejected the letter soon after receiving it, and reactions from the higher education community to the compact, which the administration indicated could be extended to any interested schools, were overwhelmingly negative.

Many university leaders, education organizations, and faculty and student groups voiced alarm, for example, about clear infringements on academic freedom (the document explicitly states that “academic freedom is not absolute”) and the fact that the compact would reward schools on the basis of loyalty to the administration rather than merit. Some schools, however, engaged with the administration to provide feedback about the initial compact and have been reluctant to share details of their positions; a few expressed interest in signing it.

The administration has also sought to oust specific administrators and pressure researchers into compliance. The administration’s attacks on University of Virginia president James Ryan over the school’s DEI programming, for example, led Ryan to resign in June. Individual academics, particularly those researching misinformation, cybersecurity, and other politically sensitive topics, were also targeted and, at times, succumbed to pressure to leave their positions.

Another thrust of the pressure campaign on researchers has involved examining and limiting their freedom to work with foreign scientists, as well as influencing foreign scientists themselves. In May, for example, NIH announced a new policy barring scientists from providing funding—in the form of subawards from grants given to U.S. researchers—to international collaborators. In the fall, Congress considered legislation amounting to an outright prohibition on U.S. scientists collaborating with researchers or advising students “affiliated with a hostile foreign entity,” specifically China, Iran, North Korea, and Russia.

That bill drew substantial pushback from academia and failed to gain traction, although in December, the House passed the 2026 National Defense Authorization Act, which still includes security restrictions for U.S. researchers.

Some foreign scientists themselves have been subjected to sweeping travel bans and denials of entry into the United States for allegedly criticizing the Trump administration. Scientists abroad who receive U.S. funding were sent surveys probing whether their research aligns with the administration’s agenda. In addition, foreign scientists seeking employment in the United States, including as postdocs and faculty at universities, now face a much steeper barrier to entry because of a new policy requiring employers to pay $100,000—instead of just a few thousand dollars—to secure an H-1B visa for their would-be hire.

Meanwhile, numerous U.S.-based researchers have contemplated trying to find employment in other countries, raising widespread concerns of a brain drain from the country’s scientific enterprise. In March, Nature reported that 75% of roughly 1,600 respondents to a poll they conducted said they were “considering leaving the United States following the disruptions prompted by Trump.” And spurred by interest from other countries—from Canada to Europe to Asia—to entice U.S scientists with opportunities for employment abroad, at least some scientists have departed.

Resolute Resistance

The array of actions taken by the Trump administration to impose its will on the academic community prompted strong resistance and a multitude of rebuttals, many taking shape in courtrooms.

Major private and public universities initiated or joined lawsuits to try to win back canceled grants and contracts, challenge a cap on reimbursements, and fight limitations on enrolling international students.

Major private and public universities initiated or joined lawsuits to try to win back canceled grants and contracts, challenge caps on reimbursements of research overhead costs, and fight limitations on enrolling international students.

Organizations representing higher education—such as AAUP, the Association of American Universities, and the American Association of Colleges and Universities—issued multiple statements about executive orders and the administration’s punitive actions against universities. Some organizations also led legal challenges.

State governments, too, joined forces to fight the administration’s education cuts in court. Some have also tried to fill gaps created by the cuts, such as in Oregon, where lawmakers looked to preserve and expand education programs like the state’s Tribal Student Grant program.

In many cases, faculty themselves stepped up to call individuals and their institutions to action and take the government to court. In April, more than 1,900 scientists—all elected members of the National Academies of Sciences, Engineering, and Medicine—signed an open letter calling out the “real danger” posed to science by the administration’s actions. The same month, faculty groups at Big Ten universities began issuing resolutions asking their institutions to enter a mutual defense pact under which they could pool legal and financial resources in the event the administration targeted any of the schools.

Individual researchers have also instigated lawsuits to fight grant terminations they said were unjust and unexplained. Four scientists from institutions across the country, for example, joined with several organizations to file suit over terminated NIH and NSFgrants. (An initial U.S. District Court ruling in their favor was partly put on hold by the Supreme Court.)

In another case, a federal judge sided in June with a small group of researchers from the University of California, Berkeley, who, aided by colleagues from the university’s law school, sued over their own canceled grants. Alongside these legal challenges, other researchers have entered the fray by helping to track and organize information about terminated grants and by ramping up efforts to communicate about their science directly to the public.

What’s on the Horizon?

The first year of the second Trump administration was a colossal shock to the higher education system in the United States. The second year may follow suit. The lasting effects of the record-long 43-day federal shutdown will not be clear for weeks or months. The shutdown cut off communications with furloughed federal researchers, halted processing of grant applications, and, in some cases, limited researchers’ ability to draw existing grant funds.

Uncertainties around funding have been compounded by the fact that Congress has not settled on a full FY2026 budget and that it faces the potential for another shutdown in late January. House and Senate versions of the budget include substantially higher funding for science than was included in Trump’s budget request, but specific allocations remain unknown. Furthermore, numerous lawsuits challenging the legality of recent executive orders and administration efforts to cancel grants, curtail specific fields of research, and limit who is eligible for future funding—and even just to be on U.S. campuses—are still working their way through the courts. Rulings to date have predominantly been in favor of plaintiffs, a good sign for higher education institutions, but their ultimate outcomes are yet to be seen.

Curated Links

Key resources for this report and people interested in this topic:

American Council on Education (2025), Higher education & the Trump administration, www.acenet.edu/Policy-Advocacy/Pages/2025-Trump-Administration-Transition.aspx.

Blake, J. (2025), Tracking key lawsuits against the Trump administration, Inside Higher Ed, 17 Nov., www.insidehighered.com/news/government/politics-elections/2025/09/30/tracking-key-lawsuits-against-trump-administration.

Blinder, A. (2025), How universities are responding to Trump, New York Times, 7 Nov., www.nytimes.com/article/trump-university-college.html.

Garisto, D., M. Kozlov, and H. Ledford (2025), Scientists take on Trump: These researchers are fighting back, Nature, 645, 298–300, https://doi.org/10.1038/d41586-025-02811-4.

Herrman, J. (2025), Politicizing the federal grantmaking process, Government Executive, 19 Aug., www.govexec.com/management/2025/08/politicizing-federal-grantmaking-process/407558/.

Jones, B. (2025), AGU and AMS join forces on special collection to maintain research momentum supporting the US National Climate assessment, From the Prow, 2 May, fromtheprow.agu.org/nca-science-will-not-be-silenced/.

Jones, B. (2025), All that’s gold does not glitter, From the Prow, 20 Aug., fromtheprow.agu.org/all-thats-gold-does-not-glitter/.

Moldwin, M. (2025), Senior scientists must stand up against attacks on research and education, Eos, 106, https://doi.org/10.1029/2025EO250180.

National Association of Independent Colleges and Universities (2025), Executive orders affecting higher education, www.naicu.edu/policy-advocacy/advocacy-resources/fact-sheet-executive-orders-affecting-higher-education/.

Ro, C. (2025), The economic effects of federal cuts to US science — in 24 graphs, Nature, 25 June, https://doi.org/10.1038/d41586-025-01830-5.

van Deelen, G. (2025), U.S. National Climate Assessment likely dead after contract canceled, Eos, 9 Apr., eos.org/research-and-developments/u-s-national-climate-assessment-likely-dead-after-contract-canceled.

van Deelen, G. (2025), Universities reject Trump funding deal, Eos, 17 Oct., eos.org/research-and-developments/universities-reject-trump-funding-deal.

Wallack, T., M. Javaid, and S. Svrluga (2025), How foreign student enrollment is shifting in the U.S., in 6 charts, Washington Post, 17 Nov., www.washingtonpost.com/education/2025/11/17/foreign-student-enrollment-data/.

Witze, A. (2025), 75% of US scientists who answered Nature poll consider leaving, Nature, 640, 298–299, https://doi.org/10.1038/d41586-025-00938-y.

Eos (@eos.org)

Citation: AGU (2026), The state of the science 1 year on: Academia, Eos, 107, https://doi.org/10.1029/2026EO260005. Published on 15 January 2026. Text © 2026. AGU. CC BY-NC-ND 3.0
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The State of the Science 1 Year On: Environment

EOS - Thu, 01/15/2026 - 13:59
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Part 6 of “The State of the Science 1 Year On,” a report from Eos and AGU

The State of the Science 1 Year On Overview

Both on the campaign trail and during his time in office, President Donald Trump has spoken about wanting clean air and water for Americans. He even established a Make America Beautiful Again Commission and called himself an environmentalist.

He has also rescinded executive orders from past presidents aimed at protecting the environment, made “drill, baby, drill” one of his catchphrases, and described the concept of a carbon footprint as “a hoax made up by people with evil intentions.”

Since Trump took office in his second term, his administration has worked to roll back environmental protections. This work has included efforts to fast-track permits for mining, oil and gas exploration, and artificial intelligence infrastructure; changing pollution limits and reporting requirements; curtailing protections for public lands; and even narrowing the scope of the Endangered Species Act.

Air and Water Quality

Scientists play an important role in monitoring and protecting the quality of our nation’s air and water. Funding and staffing cuts have made this work increasingly difficult to do.

The One Big Beautiful Bill (OBBB), Trump’s omnibus spending bill for fiscal year 2026, suggests eliminating the research arm of NOAA and closing all weather and climate labs. It also includes a $2.46 billion cut to EPA’s Clean and Drinking Water State Revolving Funds, $1.01 billion in cuts to categorical grants that fund air and water quality efforts, and $721 million in cuts to the Department of Agriculture’s Rural Development Program, which includes support to repair water systems damaged by disasters.

“Trump’s plan to virtually eliminate federal funding for clean, safe water represents a malevolent disregard for public health,” said Food & Water Watch executive director Wenonah Hauter in a statement.

The budget also eliminates the launch of a planned NOAA satellite, part of Geostationary Extended Observations, that would measure pollution, including from wildfire smoke, from space.

Independent of the proposed budget, the Trump administration also ordered the closure of 25 U.S. Geological Survey (USGS) Water Science Centers, which monitor U.S. waters for flooding and drought, as well as manage supply levels.

At NOAA’s Great Lakes Environmental Research Laboratory, funding cuts have made it difficult for staff to purchase equipment. A 35% staff cut reduced scientists’ capacity to monitor the region’s harmful algal blooms, which can cause illness in humans and death in animals.

A common tactic by the Trump administration has been to shift pollution limits (or proposed limits) and to reduce the requirements for some entities to self-report pollution statistics. For instance, in May, the EPA announced that it would reconsider the limits for four per- and polyfluoroalkyl substances (PFAS) in drinking water. PFAS are “forever chemicals” linked to developmental delays in children, cancer, and reduced fertility. Months later, however, the EPA announced that it would uphold a Biden era rule that holds polluters accountable for PFAS and perfluorooctanoic acid contamination.

In September, the administration proposed narrowing the scope of safety review for some chemicals already on the market, including formaldehyde and asbestos, a move praised by the chemical industry.

Also in September, provisions in the House and Senate annual Defense authorization bills sought to delay the phaseout of PFAS in the Pentagon. Jared Hayes, a senior policy analyst at the Environmental Working Group, told The Hill that such a delay would increase contamination, “essentially condemning more defense communities and another generation of service members.” Lawmakers across the country questioned the move in a formal letter to Defense Secretary Pete Hegseth. The Department of Defense (now also known as the Department of War) also changed the timeline for cleanup of PFAS at more than 100 military sites around the country—in some cases by up to a decade, reported The New York Times.

In September, the EPA withdrew a proposed rule that would have tightened water pollution limits for slaughterhouses, which in 2019 released more than 28 million pounds (almost 13 million kilograms) of nutrients that can contaminate drinking water.

The cleanup of an oil spill in Louisiana, which left some residents’ homes and water supply contaminated, faced delays in September, in part because of funding cuts. A letter to the EPA from the Louisiana Environmental Action Network stated that people were reporting negative health effects daily.

In November, the EPA ended a Biden era rule that strengthened regulations on soot. The EPA previously predicted that the change would prevent up to 4,500 premature deaths in 2032, when the rule was scheduled to be fully in effect. Then, in December, the EPA proposed a revision to its assessment of the health risks of formaldehyde that would double the amount of the cancer-causing toxin considered safe to inhale.

Public Lands and Waters

Reorganization of the Department of the Interior, budget cuts to programs intended to protect national parks and federal lands, and narrowing the scope of the Endangered Species Act have threatened public lands, waters, and wetlands in the United States—and the creatures that call them home.

Texas oil executive Tyler Hassen was tasked with reorganizing the Interior Department in May. After leading a massive consolidation effort, he left the department in November, as reported by E&E News. Plans to lay off more than 2,000 workers were temporarily paused by a federal judge in October.

In June, the Department of Justice reversed a 1938 legal opinion by determining that Trump has the authority to abolish protected areas that past presidents designated as national monuments. Also in June, a Republican senator added a proposal to the OBBB that would allow the U.S. Forest Service and Bureau of Land Management to sell off 2 million to 3 million acres (1.2 million hectares) of federal land. The proposal faced widespread backlash and was promptly removed.

In the summer, the U.S. Department of Agriculture proposed rescinding the 2001 Roadless Area Conservation Rule, which protects about 45 million acres of National Forest System lands from road construction, reconstruction, and timber harvests. Nearly 224,000 people and organizations spoke out about the issue during the public comment period. According to the Center for Western Priorities, an environmental group, about 99% of the comments opposed the repeal.

“The Roadless Rule is one of the best ideas the U.S. Forest Service has ever had and repealing it is one of the worst,” said Vera Smith, national forests and public lands program director at Defenders of Wildlife, in a statement.

Interior Secretary Doug Burgum also proposed rescinding a public land management rule that made conservation a “use” of public lands in the same way that drilling and other extractive industries are considered uses.

The government is also transferred 760 acres of public land in California to the Navy to establish a “National Defense Area” in December and is considering giving 775 acres of the Lower Rio Grande Valley National Wildlife Refuge in Texas to SpaceX.

The administration has also aimed to reduce or eliminate protections for U.S. waters and wetlands. In April, Trump signed an executive order opening a protected area of the central Pacific Ocean to commercial fishing. In November, the administration announced a proposal to redefine “waters of the United States” in a way that would eliminate protections for about 85% of the nation’s wetlands and more than 70% of the Colorado River’s flow sources.

Rollbacks in protections for public lands and waters often come with harms for the creatures living in these habitats, but the current administration has also introduced legislation that could have more direct effects on plants and animals. In August, the Department of Homeland Security waived protections provided by the Endangered Species Act and other statues in Texas’s Lower Rio Grande Valley National Wildlife Refuge to expedite construction of a border wall.

In April, the Department of the Interior proposed redefining “harm” under the Endangered Species Act. The new definition would include only taking direct, intentional action to kill or injure endangered or threatened species. It would no longer include “significant habitat modification or degradation” that leads to such ends, which was included in the 1973 passage of the act and upheld in a 1995 ruling. “What they’re proposing will just fundamentally upend how we’ve been protecting endangered species in this country,” Noah Greenwald, codirector of endangered species at the Center for Biological Diversity, told The Los Angeles Times.

Fast-Tracking Permits

The Trump administration has reduced or eliminated many existing procedures meant to limit the environmental harm of development projects.

The 1970 National Environmental Policy Act (NEPA) requires federal agencies to assess the environmental effects of potential projects. Environmental impact statements are required if a proposed action is expected to have a “significant effect” on the environment. The act includes a public comment period, but 2025 changes to NEPA procedures have shortened notice and public comment periods.

“This disastrous decision to undermine our nation’s bedrock environmental law means our air and water will be more polluted, the climate and extinction crises will intensify, and people will be less healthy.”

In January, the administration finalized plans to rescind NEPA-related regulations.

In May, the Supreme Court limited the scope of environmental reviews with a ruling about a proposed railway in Utah.

“This disastrous decision to undermine our nation’s bedrock environmental law means our air and water will be more polluted, the climate and extinction crises will intensify, and people will be less healthy,” Wendy Park, a lawyer with the Center for Biological Diversity, said in a statement.

In July, Trump issued an executive order to accelerate federal permitting of infrastructure for data centers, which can use more than a million gallons of water per day. In August, another executive order authorized the secretary of transportation to “eliminate or expedite” environmental reviews for commercial space launch and reentry permits.

The administration has also made efforts to expedite permitting for mining projects, vowing to reduce a sometimes yearslong process down “to just 28 days at most.” In May, the Interior Department announced plans to complete the environmental assessment for the Velvet-Wood mine project in Utah in just 2 weeks. Construction of the mine, which is set to extract uranium and vanadium, began in November.

“Beautiful Clean Coal”

According to the 2024 Global Carbon Budget, coal is responsible for 41% of global fossil carbon dioxide emissions. It also emits chemicals that are harmful to human health, such as sulfur dioxides and heavy metals. Reliance on coal in the United Staes has been falling for decades: In 2001, about 51% of the country’s net electricity generation came from coal. By 2023, the figure had dropped to 16.2%.

However, a boom in building artificial intelligence data centers, supported by the administration, threatens to reverse the decline, E&E News reported.

An April executive order focused on reviving the coal industry laid out plans to enable coal mining on federal lands and revise regulations aimed at transitioning the country away from coal production. The order also designated coal as a critical mineral.

The same month, the administration exempted at least 66 coal plants from Biden era requirements to reduce emissions of toxins such as mercury and arsenic.

Georgia resident Andrea Goolsby told E&E News she was relieved when Georgia Power announced the retirement of a nearby coal plant in 2022. But in January, the utility company announced that the plant would stay open until 2039, and in April, it became one of the 66 plants exempted from emission reduction requirements.

“It feels like we’re going back in time…I don’t understand why they are giving pollution passes that affect people’s health.”

“It feels like we’re going back in time,” Goolsby told E&E. “I don’t understand why they are giving pollution passes that affect people’s health.”

In November, the EPA proposed delaying the closure of coal ash ponds—which are leaking materials such as arsenic and lead into surrounding groundwater—at 11 coal power plants until October 2031.

A March executive order demanded action to increase production of minerals more generally, including uranium, potash, gold, and critical minerals. In November, that list of critical minerals grew by 10, bringing the total to 60. Among the additions were copper, lead, silver, and uranium.

The administration has also worked to expand the scope of where mining occurs.

A provision in the OBBB, for instance, aimed to end a 20-year moratorium on mining in Minnesota’s popular Boundary Waters Canoe Area Wilderness. The language was removed by a House committee before the OBBB was signed into law, but the Trump administration announced plans to end the moratorium anyway.

The Trump administration’s efforts to expand mining stretch beyond land and, indeed, beyond the borders of the United States. An April executive order called for expediting the permitting process for companies to mine the deep sea in areas both within and beyond national jurisdiction. In late December, the administration announced it was formally considering permit applications for seafloor mining and that it would hold public hearings on the applications in late January 2026.

Looking Ahead

The Trump administration announces changes to environmental policy almost daily, and their effects often don’t manifest immediately.

In November, the Energy Department posted a revised organizational chart that among other changes, no longer displays the Office of Clean Energy Demonstrations. It remains to be seen how this cut will affect the mission of the department, which has seen a roughly 20% reduction in its workforce over the past year, according to The New York Times. The same month, the Interior Department proposed opening up the coastal waters of California and Florida to offshore oil drilling, a plan that was met with opposition by the governors of both states. Potential health and economic costs aside, scientists and other stakeholders are concerned that the “continued politicization of science-based policy making threatens our environmental resilience, particularly in the face of climate change,” wrote hydrologist Adam Ward.

Curated Links

Key resources for this report and people interested in this topic:

Center for Western Priorities (2025), Comment analysis finds over 99% opposition to repealing 2001 roadless rule, 19 Sept., westernpriorities.org/2025/09/comment-analysis-finds-over-99-opposition-to-repealing-2001-roadless-rule/.

Daly, M. (2025), Trump exempts nearly 70 coal plants from Biden-era rule on mercury and other toxic air pollution, Associated Press, 15 April, apnews.com/article/trump-coal-power-plants-epa-exemptions-zeldin-2cd9f2697b5f46a88ab9882ab6fd1641.

Environmental Integrity (2025), Cuts to State Environmental Agencies Compound Damage from
Trump’s Dismantling of EPA, 10 Dec., https://environmentalintegrity.org/news/cuts-to-state-environmental-agencies-compound-damage-from-trumps-dismantling-of-epa/

Gardner, E. (2025), Judge stops shutdown-related RIFs indefinitely, Eos, 28 Oct., eos.org/research-and-developments/judge-stops-shutdown-related-rifs-indefinitely.

Gelles, D. (2025), Trump’s environmental claims ignore decades of climate science, New York Times, 29 Oct., www.nytimes.com/2024/10/29/climate/donald-trump-climate-change-claims.html.

Gladstone, S. (2025), Trump’s 2026 budget plan nearly eliminates federal funding for clean water in America, Food & Water Watch, 2 May, www.foodandwaterwatch.org/2025/05/02/trumps-2026-budget-plan-nearly-eliminates-federal-funding-for-clean-water-in-america/.

Liptak, A. (2025), Supreme Court curbs scope of environmental reviews, New York Times, 29 May, www.nytimes.com/2025/05/29/us/politics/supreme-court-environmental-reviews.html.

Moreno, I. (2025), New tools show how Trump EPA funding cuts harms communities, Natural Resources Defense Council, 16 Sept., www.nrdc.org/press-releases/new-tools-show-how-trump-epa-funding-cuts-harms-communities.

U.S. Environmental Protection Agency (2025), EPA & Army Corps unveil clear, durable WOTUS proposal, 17 Nov., www.epa.gov/newsreleases/epa-army-corps-unveil-clear-durable-wotus-proposal.

van Deelen, G. (2025), EPA to abandon stricter PM2.5 air pollution limits, Eos, 26 Nov., eos.org/research-and-developments/epa-to-abandon-stricter-pm2-5-air-pollution-limits.

Vought, R.T. (2025), FY2026 budget recommendations, Office of Management and Budget, Washington, D.C., 2 May, www.whitehouse.gov/wp-content/uploads/2025/05/Fiscal-Year-2026-Discretionary-Budget-Request.pdf.

Eos (@eos.org)

Citation: AGU (2026), The state of the science 1 year on: Environment, Eos, 107, https://doi.org/10.1029/2026EO260006. Published on 15 January 2026. Text © 2026. AGU. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

Utah's other Great Salt Lake is underground, ancient, deep....and fresh

Phys.org: Earth science - Thu, 01/15/2026 - 10:36
Under the Great Salt Lake playa lies a potentially vast reservoir of pressurized freshwater that has accumulated over thousands of years from mountain-derived snowmelt, according to new research from University of Utah geoscientists. This groundwater occupies the pore spaces in sediments that fill the basin west of the Wasatch Mountains and below a 30-foot-thick salty layer.

Ocean impacts nearly double economic cost of climate change, study finds

Phys.org: Earth science - Thu, 01/15/2026 - 10:00
For the first time, a study by researchers at Scripps Institution of Oceanography at the University of California, San Diego integrates climate-related damages to the ocean into the social cost of carbon—a measure of economic harm caused by greenhouse gas emissions.

Increased deciduous tree dominance reduces wildfire carbon losses in boreal forests, study shows

Phys.org: Earth science - Thu, 01/15/2026 - 10:00
As climate change drives more frequent and severe wildfires across boreal forests in Alaska and northwestern Canada, scientists are asking a critical question: Will these ecosystems continue to store carbon or become a growing source of carbon emissions?

Stability and wave dynamics in polytropic Eddington-inspired Born-Infeld gravitating solar plasmas

Physical Review E (Plasma physics) - Thu, 01/15/2026 - 10:00

Author(s): Souvik Das and Pralay Kumar Karmakar

We investigate the influence of nonlinear gravity corrections, arising from the Eddington-inspired Born-Infeld (EiBI) theory on wave dynamics, stability, and energy transport processes in polytropic, viscous, and turbulent solar plasmas. Analytical and numerical analyses of the Jeans-normalized quad…


[Phys. Rev. E 113, 015205] Published Thu Jan 15, 2026

Rocks and rolls: The computational infrastructure of earthquakes and physics of planetary science

Phys.org: Earth science - Wed, 01/14/2026 - 19:49
Sometimes to truly study something up close, you have to take a step back. That's what Andrea Donnellan does. An expert in Earth sciences and seismology, she gets much of her data from a bird's-eye view, studying the planet's surface from the air and space, using the data to make discoveries and deepen understanding about earthquakes and other geological processes.

AI sheds light on hard-to-study ocean currents

Phys.org: Earth science - Wed, 01/14/2026 - 19:47
The Indonesian Throughflow carries both warm water and fresh water from the Pacific into the Indian Ocean. As the only low-latitude current that connects the two bodies of water, it plays a key role in ocean circulation and sea surface temperature worldwide.

Physics-Informed Neural Network for Predicting Orbital Parameters of Low Earth Orbit Satellites Using Two Line Element Dataset

Publication date: Available online 12 January 2026

Source: Advances in Space Research

Author(s): Md Sahat Mahmud, Yiping Jiang, Ruirui Liu, Zihong Zhou, Bing Xu

Detailed map reveals groundwater levels across the U.S.

Phys.org: Earth science - Wed, 01/14/2026 - 17:21
How much fresh water is in the United States? It's a tough question, since most of the water is underground, accessible at varying depths. In previous decades, it's been answered indirectly from data on rainfall and evaporation. Knowing how much groundwater is available at specific locations is critical to meeting the challenges of water scarcity and contamination.

The Past 3 Years Have Been the Three Hottest on Record

EOS - Wed, 01/14/2026 - 17:00

Global average temperatures in 2025 were the third hottest on record, surpassed only by 2024 and 2023, according to an analysis published by Berkeley Earth, a nonprofit climate research organization.

According to the analysis, last year’s global average temperature was about 1.35°C–1.53°C (2.43°F–2.75°F) greater than the 1850–1900 average. The previous year, 2024, was 1.46°C–1.62°C (2.63°F–2.92°F) above the preindustrial baseline, while 2023 was 1.48°C–1.60°C (2.66°F–2.88°F) above the baseline.

The report’s authors called the exceptional heat of the past 3 years a “warming spike” that may indicate an acceleration in the rate of climate change. “The warming observed from 2023 through 2025 stands out clearly from the long-term trend,” said Robert Rohde, chief scientist at Berkeley Earth, in a statement. 

Such a spike may also indicate that the past warming rate is no longer a reliable predictor of future warming, the authors wrote.

“2023, 2024, and 2025 collectively cause us to rethink” Earth’s warming rate, Rohde said in a press briefing. Whether warming is accelerating or not, Earth’s temperature is rapidly exceeding key thresholds, such as the Paris Agreement limit of 1.5°C (2.7°F), he said.

Scientists say the exceptional warming observed in the past 3 years could be evidence of accelerating warming. Credit: Berkeley Earth, CC BY-NC 4.0

“The overall trends in temperature are very consistent” among international agencies that track global temperature.

The report aligns with an analysis from NOAA’s National Centers for Environmental Information (NCEI) that also concluded that 2025 was the third-hottest year in the global temperature record. NOAA-NCEI calculated that the year was 1.17°C (2.11°F) above the 20th-century global average.

“There are different methodologies for how the global temperature [reports] are created, but the science behind it, the data behind it, by and large, are all shared,” said Karin Gleason, a climate scientist and chief of the monitoring section at NOAA-NCEI.

“The overall trends in temperature are very consistent” among international agencies that track global temperature, she said.

What’s Causing the Spike?

While global average temperatures have been increasing for more than a century, the past 3 years’ warming spike is notably extreme relative to the mostly linear trend of the past 50 years. 

“The magnitude of this recent spike suggests additional factors have amplified recent warming beyond what we would expect from greenhouse gases and natural variability alone.”

“The magnitude of this recent spike suggests additional factors have amplified recent warming beyond what we would expect from greenhouse gases and natural variability alone,” Rohde said.

The report suggested that reductions in cloud cover and changes to atmospheric aerosols, particularly as a result of new regulations on sulfur pollution from ships in 2020, may be partly to blame for the spike. The Hunga Tonga volcanic eruption in 2022 may have also contributed to warming, though further research is needed to fully understand the eruption’s effects, the report stated.

The El Niño-Southern Oscillation (ENSO), a climate phenomenon that affects heat storage in the ocean, contributed to extreme heat in 2023 and 2024 during the El Niño phase, but remained in a weak La Niña condition for much of 2025. Such a condition would typically be expected to slightly cool global temperatures. Without the effect of La Niña, it’s possible 2025 would have been the hottest year ever recorded, Gleason said.

Gleason pointed out that a similar “warming spike” occurred in 2015 and 2016 as a result of a strong El Niño.

Humanity Faces the Heat

According to Berkeley Earth’s report, about 770 million people across the world experienced their local hottest year ever in 2025. The majority of the large population centers affected by this record-breaking heat were in Asia.

No place on Earth recorded the locally coldest year ever.

An estimated 770 million people experienced the locally hottest year ever recorded in 2025. Credit: Berkeley Earth, CC BY-NC 4.0

The report came as estimates from the Rhodium Group, a think tank, showed that the United States’ greenhouse gas emissions increased by 2.4% in 2025 after 2 years of decline. The United States experienced its fourth-hottest year ever recorded in 2025, according to an analysis from Climate Central, a nonprofit climate change research group, and another analysis by NOAA-NCEI. 

The exceptional warming underscores “how essential sustained monitoring is to understanding [climate] changes in real time,” Kristen Sissener, executive director of Berkeley Earth, said in a statement. “Continued investment in high-quality, resilient, and robust open climate data is critical to ensuring that governments, industry, and local communities can respond based on evidence, not assumptions.”

The Berkeley Earth report predicted that global temperature trends in 2026 will be similar to those of 2025, with 2026 expected to be roughly the fourth-warmest year since records began. 

—Grace van Deelen (@gvd.bsky.social), Staff Writer

14 January: This story has been updated to include information from a Berkeley Earth press briefing.

Citation: van Deelen, G. (2026), The past 3 years have been the three hottest on record, Eos, 107, https://doi.org/10.1029/2026EO260031. Published on 14 January 2026. Text © 2026. AGU. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

First-ever sanctuary of mountain ice cores in Antarctica preserves these climate archives for centuries

Phys.org: Earth science - Wed, 01/14/2026 - 16:39
The storing of the very first heritage cores in Antarctica marks a pivotal moment for the Ice Memory project launched in 2015 by CNRS, IRD, the University of Grenoble-Alpes (France), CNR, Ca' Foscari University of Venice (Italy) and the Paul Scherrer Institute (Switzerland).

Digital twins in the Arctic: How Svalbard is becoming a living lab for marine restoration

Phys.org: Earth science - Wed, 01/14/2026 - 16:38
In the icy reaches of the Svalbard archipelago, a quiet revolution in marine restoration is underway. Researchers are building a digital twin of the region—an interactive, data-rich simulation designed to help researchers and restoration teams understand how climate change is affecting Arctic coastlines and how its impacts might be reduced.

Major river deltas are sinking faster than sea-level rise, study shows

Phys.org: Earth science - Wed, 01/14/2026 - 16:00
A study published in Nature shows that many of the world's major river deltas are sinking faster than sea levels are rising, potentially affecting hundreds of millions of people in these regions.

World-first ice archive to guard secrets of melting glaciers

Phys.org: Earth science - Wed, 01/14/2026 - 15:10
Scientists on Wednesday sealed ancient chunks of glacial ice in a first-of-its-kind sanctuary in Antarctica in the hope of preserving these fast-disappearing records of Earth's past climate for centuries to come.

From bolts to blue jets, lightning comes in many strange forms

Phys.org: Earth science - Wed, 01/14/2026 - 15:03
Lightning has captured people's fascination for millennia. It's embedded in mythology, religion and popular culture. Think of Thor in Norse mythology or Indra in Hinduism.

As we begin to assess the fire damage in Victoria, we must not overlook these hidden costs

Phys.org: Earth science - Wed, 01/14/2026 - 14:53
Devastated by widespread fires, Victoria has declared a state of disaster. More than 500 structures have reportedly been destroyed and 1,000 agricultural properties have been affected. Tragically, there has also been one fatality.

AI Sheds Light on Hard-to-Study Ocean Currents

EOS - Wed, 01/14/2026 - 14:12
Source: Journal of Geophysical Research: Machine Learning and Computation

The Indonesian Throughflow carries both warm water and fresh water from the Pacific into the Indian Ocean. As the only low-latitude current that connects the two bodies of water, it plays a key role in ocean circulation and sea surface temperature worldwide.

The current is as complex as it is important: The seas surrounding Indonesia are home to deep basins and sills and a hodgepodge of ocean processes that make the Indonesian Throughflow difficult to measure. On-the-ground—or, rather, on-the-sea—observations are scarce as well because such observational systems are expensive and difficult to design and maintain.

Wang et al. combined artificial intelligence (AI) modeling techniques with observing system simulation experiment design concepts. Their method used sea surface height measurements to predict the behavior of this influential current and its individual passages and estimate which strait has the greatest effect on the current’s behavior.

The researchers developed a deep learning model that uses two types of networks to conduct observing system simulation experiments. The first, called a convolutional neural network (CNN), is often used for image classification and, in this case, was used to extract trends from data about the Indonesian Throughflow. The second, called a recurrent neural network (RNN), is most commonly used to sort through sequential data. In this work, the RNN processed the trends identified by the CNN and analyzed their changes over time. The approach proved to be much less computationally costly than running a traditional observing system simulation experiment.

The results recapitulated observed water transport trends and showed that sea surface height is a key predictor of conditions in some of the shallower straits between Indonesian islands. The Maluku Strait emerged as a passage where water conditions have a strong influence on the entire system and thus as a strong candidate for future monitoring efforts, the researchers found. Combining information about the Maluku and Halmahera Straits was even more effective at predicting system-wide conditions. (Journal of Geophysical Research: Machine Learning and Computation, https://doi.org/10.1029/2025JH000808, 2025)

—Saima May Sidik (@saimamay.bsky.social), Science Writer

Citation: Sidik, S. M. (2026), AI sheds light on hard-to-study ocean currents, Eos, 107, https://doi.org/10.1029/2026EO260027. Published on 14 January 2026. Text © 2026. AGU. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

Fire on ice: The Arctic's changing fire regime

Phys.org: Earth science - Wed, 01/14/2026 - 14:12
The number of wildland fires burning in the Arctic is on the rise, according to NASA researchers. Moreover, these blazes are burning larger, hotter, and longer than they did in previous decades.

Los microplásticos tienen efectos muy variados en el suelo

EOS - Wed, 01/14/2026 - 14:12

This is an authorized translation of an Eos article. Esta es una traducción al español autorizada de un artículo de Eos.

A medida que la producción mundial de plástico se ha disparado, pequeños fragmentos de plástico se han infiltrado en los ríos, el hielo marino e incluso en nuestros cerebros. De acuerdo con un nuevo estudio, cuando las minúsculas fibras y los fragmentos se filtran en el suelo, cambian la forma en que este interactúa con el agua.

El estudio, publicado en la revista Vadose Zone Journal, midió la retención de agua y la conductividad en suelos de tres regiones de Alemania con y sin cuatro microplásticos diferentes. Los investigadores encontraron que una concentración de plástico de solo el 0.4% en masa puede cambiar la velocidad con que el agua fluye a través del suelo, dependiendo tanto del tipo de plástico como del tipo de suelo. Según los autores, es probable que las propiedades hidráulicas alteradas se deban a la naturaleza hidrófoba del plástico y a que las partículas de microplástico cambian la disposición de los gránulos individuales del suelo.

Las pequeñas partículas del suelo se adhieren entre sí formando grumos. Los espacios entre estos grumos forman conductos por los que circulan agua, nutrientes y las raíces de las plantas. El tamaño y la distribución de estos espacios afectan al drenaje del suelo y a su capacidad de retención de agua, lo que tiene implicaciones para el crecimiento de las plantas.

“Las características hídricas de un suelo indican la rapidez con la que el agua se drena a través del suelo, lo que afecta a los cultivos y a los acuíferos.”

“Las características hídricas del suelo indican la rapidez con la que el agua se drena a través del suelo, lo que impacta cultivos y acuíferos”, menciona la autora principal del estudio, Katharina Neubert, científica especializada en suelos del Forschungszentrum Jülich en Alemania.

Investigaciones anteriores han mostrado que los microplásticos pueden alterar la estructura del suelo y sus propiedades hidráulicas, pero cada uno de esos estudios examinó sólo un tipo de suelo o un tipo de plástico. El nuevo estudio es el primero en evaluar cómo múltiples tipos de microplásticos afectan a múltiples tipos de suelo.

Los investigadores colectaron suelo de tres regiones agrícolas distintas de Alemania, que tenían diferentes texturas, niveles de carbono y niveles de pH. Después, obtuvieron cuatro microplásticos ampliamente usados variando en tamaño entre 300 micrómetros y 5 milímetros: polietileno, polipropileno, poliestireno y poliéster. Descompusieron las partículas más grandes en una licuadora y luego mezclaron cada plástico con cada tipo de suelo en una concentración del 0.4% en peso. En combinación con un control libre de plástico para cada tipo de suelo, se obtuvieron 15 combinaciones únicas de suelo y microplásticos.

Los autores vertieron cada mezcla en un cilindro metálico conectado a un dispositivo de succión para ver la rapidez con la que la succión extraía el agua del suelo. Realizaron la prueba en suelo húmedo y seco, ya que el nivel de humedad también influye en la rapidez con la que el agua se drena a través del suelo.

Desenterrando una relación matizada

Los cuatro microplásticos alteraron las tasas de flujo del agua en al menos uno de los suelos, pero la magnitud y la dirección del efecto variaron considerablemente. Por ejemplo, las fibras de poliéster, comúnmente desprendidas de algunos tipos de ropa, aumentaron la velocidad a la que fluía el agua a través de un suelo en más de un 50% cuando estaba húmedo, pero redujeron la tasa de flujo en más de un 50% en condiciones secas.

“Es muy difícil hacer una afirmación general sobre cómo cambia el suelo con los microplásticos.”

“Todos los resultados dependen del contexto”, afirma Rosolino Ingraffia, científico especializado en suelos de la Università degli Studi di Palermo en Italia, que no participó en la investigación. “Es muy difícil hacer una afirmación general sobre cómo cambia el suelo con los microplásticos”.

Otro estudio reciente en el que Neubert participó como coautora mostró cómo las diferencias en las tasas de flujo podrían traducirse en la agricultura. Ella cultivó plantas de trigo en los mismos tres tipos de suelo con y sin dos microplásticos: polietileno y poliéster. Los resultados fueron igualmente complicados, ya que el plástico añadido aumentaba, disminuía o no afectaba al crecimiento de las raíces, dependiendo de la combinación.

La concentración de plástico del 0.4% utilizada en ambos estudios es mucho mayor que la que albergan la mayoría de los campos agrícolas en la actualidad, según Neubert e Ingraffia. Por ejemplo, las tierras cultivables que han sido tratadas con biosólidos durante una década presentan concentraciones más cercanas al 0.002%. Sin embargo, los cálculos basados en la tasa actual de acumulación de microplásticos sugieren que muchas zonas podrían alcanzar esta concentración del 0.4% en 50 o 60 años, añadió Ingraffia.

Neubert espera que su investigación dé lugar a regulaciones que impidan que los microplásticos alcancen esos niveles. Alemania planea eliminar progresivamente el uso de lodos de depuradora ricos en nutrientes como fertilizantes en la mayoría de los campos agrícolas, en parte debido a la preocupación por la contaminación plástica, afirmó. Un estudio identificó esta práctica como una de las principales fuentes de microplásticos en el suelo de Alemania.

Es importante mantener el plástico fuera del suelo porque “aún no sabemos qué consecuencias tiene para nuestros suelos”, dijo Neubert.

—Mark DeGraff (@markr4nger.bsky.social), Escritor científico

This translation by Saúl A. Villafañe-Barajas (@villafanne) was made possible by a partnership with Planeteando and Geolatinas. Esta traducción fue posible gracias a una asociación con Planeteando y Geolatinas.

Text © 2026. The authors. CC BY-NC-ND 3.0
Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.

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