A law from the era of Red Scares is supercharging Trump administration’s power over immigrants and noncitizens

Source: The Conversation – USA – By Daniel Tichenor, Professor of Political Science, University of Oregon

The Trump administration detained former Columbia University student and pro-Palestinian protest leader Mahmoud Khalil, center, for more than two months and is seeking to revoke his lawful permanent resident status. Kena Betancur/AFP via Getty Images

Nativism, the idea that government must guard native-born Americans from various threats posed by immigrants, has a long history in the United States.

Today, the Trump administration is citing the Immigration and Nationality Act of 1952, a restrictive measure written by nativist members of Congress decades ago when fears of communism were rampant, to sharply restrict the rights of noncitizens.

Under this law, also known as the McCarran-Walter Act, federal agencies have arrested and detained noncitizens associated with pro-Palestinian protests, reintroduced immigrant registration requirements, and imposed a new travel ban that affects 19 nations.

Since the 1950s, Congress has removed some of this sprawling federal law’s most discriminatory features, such as racist national origins quotas. But other key provisions remain on the books. Now they are the primary legal basis for some of President Donald Trump’s most controversial immigration crackdowns.

Author and reporter Clay Risen discusses parallels between anticommunist fears in the 1950s and the Trump administration’s anti-immigrant policies.

Foreign policy trumps free speech

In March 2025, the White House invoked the McCarran-Walter Act to justify arresting and deporting Mahmoud Khalil, a legal permanent resident who had participated in pro-Palestinian protests at Columbia University. Officials pointed to Section 237(a)(4)(C) of the law, which states that any “alien whose presence or activities in the United States the Secretary of State has reasonable ground to believe would have potentially serious adverse foreign policy consequences for the United States is deportable.”

This has been tried only once before. In 1995, the Clinton administration unsuccessfully sought to use the provision to deport a former Mexican official, Mario Ruiz Massieu, to face charges in his homeland for extortion and obstructing a murder investigation. Ruiz Massieu was later indicted in the U.S. on money laundering charges and died by suicide shortly before his arraignment.

The Trump administration cited the same provision to justify detaining Tufts University doctoral student Rumeysa Ozturk in March. Ozturk came under government scrutiny because she co-authored an op-ed in the Tufts student newspaper criticizing the university’s position on the Israel-Gaza war.

Surveillance footage of a terrified Ozturk being arrested by masked Immigration Customs and Enforcement agents on a street in Somerville, Massachusetts, drew criticism from government officials and civil liberties advocates. In response, Secretary of State Marco Rubio alleged that Ozturk had harmed U.S. interests by supporting “movements that are involved in doing things like vandalizing universities, harassing students, taking over buildings, creating a ruckus.”

Khalil and Ozturk both were released after weeks in detention, pending final resolution of their cases. Their lawyers argue that their clients’ treatment violates free speech protections and that the defendants were punished for expressing their political beliefs.

Monitoring noncitizens

The McCarran-Walter Act also authorizes intrusive registration and tracking requirements for noncitizens who remain in the U.S. for 30 days or longer.

On Jan. 20, 2025, Trump issued an executive order directing the Department of Homeland Security to enforce an “alien registration requirement.” The agency issued a final rule in April requiring all noncitizens over the age of 14 to register and be fingerprinted. Parents or guardians must register noncitizen children under age 14. The rule also requires adult noncitizens to carry “evidence of registration” at all times.

Such policies aren’t new. Noncitizen registration was codified in the Alien Registration Act of 1940, on the eve of U.S. entry into World War II. The law was designed to regulate the foreign-born population and encourage eligible noncitizens to join the U.S. armed forces. Its requirements were written into the McCarran-Walter Act.

After the 9/11 terrorist attacks, the Bush administration created the National Security Entry-Exit Registration System, which targeted noncitizen males age 16 or older from 25 Muslim-majority countries. It required registrants to submit biometric information, check in regularly with immigration authorities and use specific ports of entry for travel.

The Obama administration suspended this system in 2011 and permanently dismantled it in 2016.

Today, Trump administration officials say they are simply enforcing long-standing legal authority. A federal judge agreed, ruling on April 10 that the Homeland Security Department could require noncitizens to register and carry documentation.

The Trump administration says it will strictly enforce a long-standing requirement for immigrants in the country more than 30 days to register with the federal government.

Travel bans redux

On June 2, Trump announced a new travel ban on foreign nationals from 12 countries, mostly in Africa and the Middle East. The ban draws its authority from the McCarran-Walter Act. Two days later, Trump claimed the same legal discretion to exclude Harvard University’s international students from the U.S.

During his first term, Trump invoked these sections of the law to justify a travel ban on seven predominantly Muslim countries. The U.S. Supreme Court ultimately upheld this action in 2018 by a 5-4 vote in Trump v. Hawaii. Writing for the majority, Chief Justice John Roberts stated that the travel ban was well within broad powers over immigration granted to the president under the McCarran-Walter Act. He added that the court had “no view on the soundness of the policy.”

Trump’s new ban is more carefully crafted than earlier versions and more likely to withstand legal challenges. But his efforts to use the McCarren-Walter Act to ban international students from attending Harvard University face stiff legal headwinds.

On May 22, Homeland Security Secretary Kristi Noem notified Harvard officials that the agency was revoking the school’s certification to participate in the Student and Exchange Visitor Program, which grants visas to international students to come to the U.S. In a June 4 proclamation, the White House claimed that foreign students at Harvard had behaved in ways that threatened U.S. national security.

A federal judge in Boston quickly blocked the revocation, holding that it violated core constitutional free speech rights. “The government’s misplaced efforts to control a reputable academic institution and squelch diverse viewpoints seemingly because they are, in some instances, opposed to this administration’s own views, threaten these rights,” wrote Judge Allison D. Burroughs.

The latest step came on July 9, when the Trump administration subpoenaed Harvard for information on its foreign students, including their disciplinary records and involvement in campus protests.

Broad power over noncitizens

Ironically, congressional sponsors of the McCarran-Walter Act were at odds with the White House when the law was enacted in 1952. They overrode a veto by President Harry S. Truman, who thought the law’s nativist ideas were unfitting for a nation of immigrants and global defender of democracy.

However, the expansive executive powers created by this law have endured largely unaltered over time, through waves of immigration reform.

Now they are a boon to the Trump administration’s ambitious immigration crackdown. It’s a telling reminder that repressive old laws can come back to life – even when they don’t reflect the current views of many Americans.

The Conversation

Daniel Tichenor does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. A law from the era of Red Scares is supercharging Trump administration’s power over immigrants and noncitizens – https://theconversation.com/a-law-from-the-era-of-red-scares-is-supercharging-trump-administrations-power-over-immigrants-and-noncitizens-255307

How universities can keep protests from turning violent: 3 lessons from the 2024 pro-Palestinian encampments

Source: The Conversation – USA (2) – By Matthew J. Mayhew, Professor of Higher Education, The Ohio State University

Pro-Palestinian supporters march outside Columbia University in September 2024. AP Photo/Yuki Iwamura

In spring 2024, pro-Palestinian student encampments that began at Columbia and Harvard spread to university campuses throughout the U.S. as Israel invaded Gaza in response to Hamas’ Oct. 7, 2023, surprise attack. At least 100 campuses had encampments for at least a few days during this period.

While some campuses erupted in violence, others remained peaceful and didn’t experience the open conflict that led to congressional hearings, university presidents losing their jobs and repercussions that are continuing to be felt today.

What made the difference?

In spring 2024, Ohio State University’s College Impact Laboratory, where we all work, surveyed universities to learn more about whether their campuses experienced protests, what happened and how they handled them. Part of our goal was to understand how spiritual leaders played a role, if any, in managing the protests. We’ve been analyzing the data ever since. The results from those who responded point to several lessons universities could learn from to avoid violence in future protests.

Campuses are a critical arena for activism

Campus protests have long been a defining feature of social and political change in the U.S. From the civil rights movements of the 1950s and 1960s to the student-led climate strikes of recent years, higher education institutions have served as a critical space for activism.

Often, these protests reflect broader societal tensions, and how universities respond has played a significant role in shaping their outcomes.

Historically, protests have been most likely to escalate when students feel unheard. In contrast, institutions that adopt proactive strategies, such as facilitating conversations or including students in decision-making, often experience better outcomes.

a student holds a green red and white flag on pavement in front of tents on a college campus
A George Washington University student carries a Palestinian flag at a student encampment protesting the Israel-Hamas war in May 2024.
AP Photo/Jose Luis Magana

Snapshot of the pro-Palestinian protests

As our survey data shows, the pro-Palestinian protests illustrate this dynamic.

To gather data, the College Impact Laboratory sent questionnaires to administrators at the 329 universities that participate in our Interfaith Spiritual, Religious and Secular Campus Climate Index, also known as the INSPIRES Index, as well as hundreds of colleges and universities in our recruitment database.

In all, 35 schools responded to our 23-question survey. Of those, we found that most protests were led by students, half lasted less than a week, and the vast majority were nonviolent. Fifteen did not have protests, while the rest did. While the number of institutions that participated in this survey is relatively small, it does give us key insights into what schools were thinking.

Half of the campuses with protests reported law enforcement involvement – either campus police or city officers – with 20% experiencing physical altercations between protesters and police. Other disruptive actions such as academic interruptions, vandalism, physical violence and doxxing were reported with varying frequencies.

Protests at campuses that participated in our survey peaked during April and May 2024, with 70% of them experiencing demonstrations in these months.

Here are three takeaways from the survey, suggesting steps universities can take before and during future protests to avoid escalation:

1. Involve students in guidelines for engagement – early

At every surveyed institution that reported protests, students were at the forefront of organizing and leading these efforts.

Yet, despite this clear student leadership, about one-third of institutions said they didn’t consult with students to establish guidelines for engagement. Those that did invited representatives from student organizations or student government officers into the policymaking process to determine what protocols would be followed to manage protests and keep them peaceful.

On campuses where administrators didn’t engage with student leaders, tensions tended to escalate, and protests disrupted the institutions for weeks, often after police were called in or curfews were imposed.

While many of the protests lasted only one to seven days, we found that institutions that opened lines of communication early between administration and student protest leaders were more likely to deescalate tensions quickly. In contrast, campuses where administrators did not engage early on saw protests lasting weeks or involving greater disruptions.

Also, institutions that engaged early with student leaders were less likely to face stronger demands, such as calls for administrators to be fired, divestment from Israeli companies or calls to defund the campus police.

Our survey results suggest it’s important for administrators to engage with students early to establish clear guidelines to make it less likely future protests spiral into violence.

2. Communicate openly, often and before protests

Discussion of difficult topics, such as the conflict between Israel and Palestinians, shouldn’t wait until protests break out to begin. We found that every school in our survey that proactively supported dialogue between Jews and Muslims – before the war broke out – didn’t see violence result from the protests.

Dialogue isn’t just a strategy for preventing protests from spiraling out of control; it is fundamental to intergroup learning in higher education. These events create safe spaces for students − whether Arab, Jewish, Palestinian or members of different ethnic or religious groups − to engage with classmates with different points of view.

But even once protests begin, dialogue can help. When institutions engaged in dialogue, during or as a result of a protest, the protests were less likely to involve violence. At half of the campuses that participated in our survey and experienced protests, protests were ended peacefully through dialogue.

Brown, for example, modeled the power of institutional listening in its response to its April 2024 encampment. Rather than escalating tensions, university leaders engaged directly with student activists, resulting in a peaceful resolution and a commitment to bring the students’ divestment proposal to a formal vote in October. It ultimately failed to pass the board of directors.

two people hold a sign saying we will be back on a mostly empty college lawn
Demonstrators unfurl a banner on a lawn after an encampment protesting the Israel-Hamas war was taken down at Brown University on April 30, 2024, in Providence, R.I.
AP Photo/David Goldman

3. Involve relevant groups in decision-making

Most administrators in our survey, as they considered how to engage with protesters, reached out to relevant student groups such as those that focus on Jewish and Muslim students to better understand their perspectives.

However, only 28% consulted a religious or spiritual life office staff member on campus.

Religious or spiritual life staff are present on both private and public campuses and may include university-employed multifaith chaplains, interfaith coordinators or directors of spiritual life. Unlike student-led religious groups, these professionals often serve as liaisons to the religious and nonreligious communities represented on campus.

The focus of such roles on serving students from all worldviews positions them as key resources for deescalation through community outreach, support and two-way communication. Additionally, these professionals have valuable expertise in religious pluralism and community relationships. This experience helps them to advise administrators on policy and potential courses of action in times of tension.

Consulting with university staff with a focus on religion or spiritual life makes particular sense given the nature of the protests and how religion is intertwined, but our data suggests they may be underutilized more broadly for their expertise in navigating tensions related to competing worldviews.

Proactive engagement with these leaders not only helps campuses navigate an immediate crisis but demonstrates a commitment to inclusivity and respect for different groups’ perspectives.

Leading by example

Put another way, our research suggests institutions can avoid the negative outcomes of protests by embodying the traits commonly associated with universities, such as showing mutual respect, fostering democratic debate and engaging in critical thinking even on divisive issues. Engaging from a mindset of goodwill with student leaders shows administrators value student voices and are willing to work collaboratively toward solutions.

But when campuses ignore peaceful protests or refuse to engage with student leaders, they risk turning manageable situations into prolonged crises.

At a time when divisions run deep, we believe campuses that lead by example by embracing dialogue and engaging student activists before, during and after protests take place are not only likely to see less violence, but are likely to help heal America’s great divides.

The Conversation

Matthew J. Mayhew receives grant funding for various research projects from the National Science Foundation, the ECMC Foundation, the Templeton Religion Trust, the Arthur Vining Davis Foundations, and Pew Charitable Trusts. Currently, Dr. Mayhew leads the College Impact Laboratory at The Ohio State University. He is the Principal Investigator for the INSPIRES Index project and is the current editor of the Digest of Recent Research.

Renee L. Bowling works for the College Impact Lab at The Ohio State University that produces the INSPIRES Index and serves as Chair of NASPA’s Spirituality and Religion in Higher Education Knowledge Community.

Hind Haddad does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. How universities can keep protests from turning violent: 3 lessons from the 2024 pro-Palestinian encampments – https://theconversation.com/how-universities-can-keep-protests-from-turning-violent-3-lessons-from-the-2024-pro-palestinian-encampments-252278

Rethinking the MBA: Character as the educational foundation for future business leaders

Source: The Conversation – USA (2) – By Andrew J. Hoffman, Holcim (US) Professor of Sustainable Enterprise, Ross School of Business, School for Environment & Sustainability, University of Michigan

Questions about the role of business education have led to introspection among business school leaders and researchers. Supatman/iStock via Getty Images

Programs to help students discern their vocation or calling are gaining prominence in higher education.

According to a 2019 Bates/Gallup poll, 80% of college graduates want a sense of purpose from their work. In addition, a 2023 survey found that 50% of Generation Z and millennial employees in the U.K. and U.S. have resigned from a job because the values of the company did not align with their own.

These sentiments are also found in today’s business school students, as Gen Z is demanding that course content reflect the changes in society, from diversity and inclusion to sustainability and poverty. According to the Financial Times, “there may never have been a more demanding cohort.”

And yet, business schools have been slower than other schools to respond, leading to calls ranging from transforming business education to demolishing it.

What are business schools creating?

Historically, studies have shown that business school applicants have scored higher than their peers on the “dark triad” traits of narcissism, psychopathy and Machiavellianism. These traits can manifest themselves in a tendency toward cunning, scheming and, at times, unscrupulous behavior.

Over the course of their degree program, other studies have found that business school environments can amplify those preexisting tendencies while enhancing a concern for what others think of them.

And these tendencies stick after graduation. One study examined 9,900 U.S. publicly listed firms and separated the sample by those run by managers who went to business school and those whose managers did not. While they found no discernible difference in sales or profits between the two samples, they found that labor wages were cut 6% over five years at companies run by managers who went to business school, while managers with no business degree shared profits with their workers. The study concludes that this is the result “of practices and values acquired in business education.”

But there are signs that this may be changing.

Questioning value

A man speaks while holding a microphone.
Business leaders play a significant role in society, but they aren’t always trusted.
miniseries/E+ via Getty Images

Today, many are questioning the value of the MBA.

Those who have decided it is worth the high cost either complain of its lack of rigor, relevance and critical thinking or use it merely for access to networks for salary enhancement, treating classroom learning as less important than attending recruiting events and social activities.

Layered onto this uncertain state of affairs, generative artificial intelligence is fundamentally altering the education landscape, threatening future career prospects and short-circuiting the student’s education by doing their research and writing for them.

This is concerning because of the outsized role that business leaders play in today’s society: allocating capital, developing and deploying new technologies and influencing political and social debates.

At times, this role is a positive one, but not always. Distrust follows that uncertainty.

Only 16% of Americans had a “great deal” or “quite a lot” of confidence in corporations, while 51% of Americans between 18 and 29 hold a dim view of capitalism.

Facing this reality, business educators are beginning to reexamine how to nurture business leaders who view business not only as a means to making money but also as a vehicle in service to society.

Proponents such as Harry Lewis, former dean of Harvard College; Derek Bok, former president of Harvard University; Harold Shapiro, former president of Princeton University; and Anthony Kronman, former dean of the Yale Law School, describe this effort as a return to the original focus of a college education.

Not ethics, but character formation

A woman wearing glasses speaks to people in a sun-filled conference room
Character education could challenge business students to consider what type of leaders they aspire to be.
MoMo Productions/Digital Vision via Getty Images

Business schools have often included ethics courses in their curriculum, often with limited success. What some schools are experimenting with is character formation.

As part of this experimentation is the development of a coherent moral culture that lies within the course curriculum but also within the cocurricular programming, cultural events, seminars and independent studies that shape students’ worldviews; the selection, socialization, training and reward systems for students, staff and faculty; and other aspects that shape students’ formation.

Stanford’s Bill Damon, one of the leading scholars on helping students develop a sense of purpose in life, describes a revised role for faculty in this effort, one of creating the fertile conditions for students to find meaning and purpose on their own.

I use this approach in my course on vocation discernment in business, shifting from a more traditional academic style to one that is more developmental.

This is relational teaching that artificial intelligence cannot do. It involves bringing the whole person into the education process, inspiring hearts as much as engaging heads to form competent leaders who possess character, judgment and wisdom.

It allows an examination of both the how and the why of business, challenging students to consider what kind of business leader they aspire to be and what kind of legacy they wish to establish.

It would mark a return to the original focus of early business schools, which, as Rakesh Khurana, a professor of sociology at Harvard, calls out in his book “From Higher Aims to Hired Hands: The Social Transformation of American Business Schools and the Unfulfilled Promise of Management as a Profession,” was to train managers in the same vocational way we train doctors “to seek the higher aims of commerce in service to society.”

Reshaping business education

A businesswoman holding a smartphone stands in front of a computer generated background
Most business school curricula are similar, but there are examples that break the mold.
Oscar Wong/Moment via Getty Images

The good news is that there are emerging exemplars that are seeking to create this kind of curriculum through centers such as Notre Dame University’s Institute for Social Concerns and Bates College’s Center for Purposeful Work and courses such as Stanford University’s Designing Your Life and the University of Michigan’s Management as a Calling.

These are but a few examples of a growing movement. So, the building blocks are there to draw from. The student demand is waiting to be met. All that is needed is for more business schools to respond.

The Conversation

Andrew J. Hoffman does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Rethinking the MBA: Character as the educational foundation for future business leaders – https://theconversation.com/rethinking-the-mba-character-as-the-educational-foundation-for-future-business-leaders-259223

How 17M Americans enrolled in Medicaid and ACA plans could lose their health insurance by 2034

Source: The Conversation – USA (3) – By Simon F. Haeder, Associate Professor of Public Health, Texas A&M University

The millions of people losing insurance include many who get coverage through the ACA marketplace. sesame/DigitalVision Vectors via Getty Images

The big tax and spending package President Donald Trump signed into law on July 4, 2025, will cut government spending on health care by more than US$1 trillion over the next decade.

Because the final version of the legislation moved swiftly through the Senate and the House, estimates regarding the number of people likely to lose their health insurance coverage were incomplete when Congress approved it by razor-thin margins. Nearly 12 million Americans could lose their health insurance coverage by 2034 due to this legislation, according to the nonpartisan Congressional Budget Office.

However, the number of people losing their insurance by 2034 could be even higher, totaling more than 17 million. That’s largely because it’s likely that at least 5 million Americans who currently have Affordable Care Act marketplace health insurance will lose their coverage once subsidies that help fund those policies expire at the end of 2025. And very few Republicans have said they support renewing the subsidies.

In addition, regulations the Trump administration introduced earlier in the year will further increase the number of people losing their ACA marketplace coverage.

As a public health professor, I see these changes, which will be phased in over several years, as the first step in a reversal of the expansion of access to health care that began with the ACA’s passage in 2010. About 25.3 million Americans lacked insurance in 2023, down sharply from 46.5 million when President Barack Obama signed the ACA into law. All told, the changes in the works could eliminate three-quarters of the progress the U.S. has made in reducing the number of uninsured Americans following the Affordable Care Act.

Millions will lose their Medicaid coverage

The biggest number of people becoming uninsured will be Americans enrolled in Medicaid, which currently covers more than 78 million people.

An estimated 5 million will eventually lose Medicaid coverage due to new work requirements that will go into effect nationally by 2027.

Work requirements target people eligible for Medicaid through the Affordable Care Act’s expansion. They tend to have slightly higher incomes than other people enrolled in the program.

Medicaid applicants who are between 19 and 64 years old will need to certify they are working at least 80 hours a month or spending that much time engaged in comparable activities, such as community service.

When these rules have been introduced to other safety net programs, most people lost their benefits due to administrative hassles, not because they weren’t logging enough hours on the job. Experts like me expect to see that occur with Medicaid too.

Other increases in the paperwork required to enroll in and remain enrolled in Medicaid will render more than 2 million more people uninsured, the CBO estimates.

And an additional 1.4 million would lose coverage because they may not meet new citizenship or immigration requirements.

In total, these changes to Medicaid would lead to more than 8 million people becoming uninsured by 2034.

Many of those who aren’t kicked out of Medicaid would also face new copayments of up to US$35 for appointments and procedures – making them less likely to seek care, even if they still have health insurance.

The new policies also make it harder for states to pay for Medicaid, which is run by the federal government and the states. They do so by limiting the taxes states charge medical providers, which are used to fund the states’ share of Medicaid funding. With less funding, some states may try to reduce enrollment or cut benefits, such as home-based health care, in the future.

Losing Medicaid coverage may leave millions of low-income Americans without insurance coverage, with no affordable alternatives for health care. Historically, the people who are most likely to lose their benefits are low-income people of color or immigrants who do not speak English well.

Protester holds sign that says 'My friend had cancer. ACA saved his life.'
A supporter of the Affordable Care Act stands in front of the Supreme Court building on Nov. 10, 2020.
Samuel Corum/Getty Images

ACA marketplace policies may cost far more

The new law will also make it harder for the more than 24 million Americans who currently get health insurance through Affordable Care Act marketplace plans to remain insured.

For one, it will be much harder for Americans to purchase insurance coverage and qualify for subsidies for 2026.

These changes come on the heels of regulations from the Trump administration that the Congressional Budget Office estimates will lead to almost 1 million people losing their coverage through the ACA marketplace. This includes reducing spending on outreach and enrollment.

What’s more, increased subsidies in place since 2021 are set to expire at the end of the year. Given Republican opposition, it seems unlikely that those subsidies will be extended.

Not extending the subsidies alone could mean premiums will increase by more than 75% in 2026. Once premiums get that unaffordable, an additional 4.2 million Americans could lose coverage, the Congressional Budget Office estimates.

With more political uncertainty and reduced enrollment, more private insurers may also withdraw from the ACA market. Large insurance companies such as Aetna, Cigna and UnitedHealth have already raised concerns about the ACA market’s viability.

Should they exit, there would be fewer choices and higher premiums for people getting their insurance this way. It could also mean that some counties could have no ACA plans offered at all.

Ramifications for the uninsured and rural hospitals

When people lose their health insurance, they inevitably end up in worse health and their medical debts can mount. Because medical treatments usually work better when diagnoses are made early, people who end up uninsured may die sooner than if they’d still had coverage.

Having to struggle to pay the kinds of high medical bills people without insurance face takes a physical, mental and financial toll, not just on people who become uninsured but also their families and friends. It also harms medical providers that don’t get reimbursed for their care.

Public health scholars like me have no doubt that many hospitals and other health care providers will have to make tough choices. Some will close. Others will offer fewer services and fire health care workers. Emergency room wait times will increase for everyone, not just people who lose their health insurance due to changes in Trump’s tax and spending package.

Rural hospitals play a crucial role in health care access.

Rural hospitals, which were already facing a funding crisis, will experience some of the most acute financial pressure. By one estimate, more than 300 hospitals are at risk of closing.

Children’s hospitals and hospitals located in low-income urban areas also disproportionately rely on Medicaid and will struggle to keep their doors open.

Republicans tried to protect rural hospitals by designating $50 billion in the legislative package for them over 10 years. But this funding comes nowhere near the $155 billion in losses KFF expects those health care providers to incur due to Medicaid cuts. Also, the funding comes with a number of restrictions that could further limit its effectiveness.

What’s next

Some Republicans, including Sens. Mike Crapo and Ron Johnson, have already indicated that more health care policy changes could be coming in another large legislative package.

They could include some of the harsher provisions that were left out of the final version of the legislation Congress approved. Republicans may, for example, try to roll back the ACA’s Medicaid expansion.

Moving forward, spending on Medicare, the insurance program that primarily covers Americans 65 and older, could decline too. Without any further action, the CBO says that the law could trigger an estimated $500 billion in mandatory Medicare cuts from 2026 to 2034 because of the trillions of dollars in new federal debt the law creates.

Trump has repeatedly promised not to cut Medicare or Medicaid. And yet, it’s possible that the Trump administration will issue executive orders that further reduce what the federal government spends on health care – and roll back the coverage gains the Affordable Care Act brought about.

Portions of this article first appeared in a related piece published on June 13, 2025.

The Conversation

Simon F. Haeder has previously received funding from the Centers for Medicare and Medicaid Services, the Pennsylvania Insurance Department, and the Robert Wood Johnson Foundation for unrelated projects.

ref. How 17M Americans enrolled in Medicaid and ACA plans could lose their health insurance by 2034 – https://theconversation.com/how-17m-americans-enrolled-in-medicaid-and-aca-plans-could-lose-their-health-insurance-by-2034-260664

When big sports events like FIFA World Cup expand, their climate footprint expands too

Source: The Conversation – USA (2) – By Brian P. McCullough, Associate Professor of Sport Management, University of Michigan

Lionel Messi celebrates with fans after Argentina won the FIFA World Cup championship in 2022 in Qatar. Michael Regan-FIFA/FIFA via Getty Images

When the FIFA World Cup hits North America in June 2026, 48 teams and millions of soccer fans will be traveling to and from venues spread across the United States, Canada and Mexico.

It’s a dramatic expansion – 16 more teams will be playing than in recent years, with a jump from 64 to 104 matches. The tournament is projected to bring in over US$10 billion in revenue. But the expansion will also mean a lot more travel and other activities that contribute to climate change.

The environmental impacts of giant sporting events like the World Cup create a complex paradox for an industry grappling with its future in a warming world.

A sustainability conundrum

Sports are undeniably experiencing the effects of climate change. Rising global temperatures are putting athletes’ health at risk during summer heat waves and shortening winter sports seasons. Many of the 2026 World Cup venues often see heat waves in June and early July, when the tournament is scheduled.

There is a divide over how sports should respond.

Some athletes are speaking out for more sustainable choices and have called on lawmakers to take steps to limit climate-warming emissions. At the same time, the sport industry is growing and facing a constant push to increase revenue. The NCAA is also considering expanding its March Madness basketball tournaments from 68 teams currently to as many as 76.

A sweating soccer player squirts water from a bottle onto his forehead during a match.
Park Yong-woo of team Al Ain from Abu Dhabi tries to cool off during a Club World Cup match on June 26, 2025, in Washington, D.C., which was in the midst of a heat wave. Some players have raised concerns about likely high temperatures during the 2026 World Cup, with matches scheduled June 11 to July 19.
AP Photo/Julia Demaree Nikhinson

Estimates for the 2026 World Cup show what large tournament expansions can mean for the climate. A report from Scientists for Global Responsibility estimates that the expanded World Cup could generate over 9 million metric tons of carbon dioxide equivalent, nearly double the average of the past four World Cups.

This massive increase – and the increase that would come if the NCAA basketball tournaments also expand – would primarily be driven by air travel as fans and players fly among event cities that are thousands of miles apart.

A lot of money is at stake, but so is the climate

Sports are big business, and adding more matches to events like the World Cup and NCAA tournaments will likely lead to larger media rights contracts and greater gate receipts from more fans attending the events, boosting revenues. These are powerful financial incentives.

In the NCAA’s case, there is another reason to consider a larger tournament: The House v. NCAA settlement opened the door for college athletic departments to share revenue with athletes, which will significantly increase costs for many college programs. More teams would mean more television revenue and, crucially, more revenue to be distributed to member NCAA institutions and their athletic conferences.

When climate promises become greenwashing

The inherent conflict between maximizing profit through growth and minimizing environmental footprint presents a dilemma for sports.

Several sport organizations have promised to reduce their impact on the climate, including signing up for initiatives like the United Nations Sports for Climate Action Framework.

However, as sports tournaments and exhibition games expand, it can become increasingly hard for sports organizations to meet their climate commitments. In some cases, groups making sustainability commitments have been accused of greenwashing, suggesting the goals are more about public relations than making genuine, measurable changes.

For example, FIFA’s early claims that it would hold a “fully carbon-neutral” World Cup in Qatar in 2022 were challenged by a group of European countries that accused soccer’s world governing body of underestimating emissions. The Swiss Fairness Commission, which monitors fairness in advertising, considered the complaints and determined that FIFA’s claims could not be substantiated.

A young man looks up as he prepares to board a plane on the tarmac in Milan, Italy, for a flight to Rome on Dec. 15, 2024.
Alessandro Bastoni, of Inter Milan and Italy’s national team, prepares to board a flight from Milan to Rome with his team.
Mattia Ozbot-Inter/Inter via Getty Images

Aviation is often the biggest driver of emissions. A study that colleagues and I conducted on the NCAA men’s basketball tournament found about 80% of its emissions were connected to travel. And that was after the NCAA began using the pod system, which is designed to keep teams closer to home for the first and second rounds.

Finding practical solutions

Some academics, observing the rising emissions trend, have called for radical solutions like the end of commercialized sports or drastically limiting who can attend sporting events, with a focus on fans from the region.

These solutions are frankly not practical, in my view, nor do they align with other positive developments. The growing popularity of women’s sports shows the challenge in limiting sports events – more games expands participation but adds to the industry’s overall footprint.

Further compounding the challenges of reducing environmental impact is the amount of fan travel, which is outside the direct control of the sports organization or event organizers.

Many fans will follow their teams long distances, especially for mega-events like the World Cup or the NCAA tournament. During the men’s World Cup in Russia in 2018, more than 840,000 fans traveled from other countries. The top countries by number of fans, after Russia, were China, the U.S., Mexico and Argentina.

There is an argument that distributed sporting events like March Madness or the World Cup can be better in some ways for local environments because they don’t overwhelm a single city. However, merely spreading the impact does not necessarily reduce it, particularly when considering the effects on climate change.

How fans can cut their environmental footprint

Sport organizations and event planners can take steps to be more sustainable and also encourage more sustainable choices among fans. Fans can reduce their environmental impact in a variety of ways. For example:

  • Avoid taking airplanes for shorter distances, such as between FIFA venues in Philadelphia, New York and Boston, and carpool or take Amtrak instead. Planes can be more efficient for long distances, but air travel is still a major contributing factor to emissions.

  • While in a host city, use mass transit or rent electric vehicles or bicycles for local travel.

  • Consider sustainable accommodations, such as short-term rentals that might have a smaller environmental footprint than a hotel. Or stay at a certified green hotel that makes an effort to be more efficient in its use of water and energy.

  • Engage in sustainable pregame and postgame activities, such as choosing local, sustainable food options, and minimize waste.

  • You can also pay to offset carbon emissions for attending different sporting events, much like concertgoers do when they attend musical festivals. While critics question offsets’ true environmental benefit, they do represent people’s growing awareness of their environmental footprint.

Through all these options, it’s clear that sports face a significant challenge in addressing their environmental impacts and encouraging fans to be more sustainable, while simultaneously trying to meet ambitious business and environmental targets.

In my view, a sustainable path forward will require strategic, yet genuine, commitment by the sports industry and its fans, and a willingness to prioritize long-term planetary health alongside economic gains – balancing the sport and sustainability.

The Conversation

Brian P. McCullough does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. When big sports events like FIFA World Cup expand, their climate footprint expands too – https://theconversation.com/when-big-sports-events-like-fifa-world-cup-expand-their-climate-footprint-expands-too-259437

Just back from holiday and not feeling well? Here are the symptoms you should take seriously

Source: The Conversation – UK – By Dan Baumgardt, Senior Lecturer, School of Physiology, Pharmacology and Neuroscience, University of Bristol

What are you bringing back with you? The Picture Studio/Shutterstock

Summer is synonymous with adventure, with millions flocking to exotic destinations to experience different cultures, cuisines and landscapes. But what happens when the souvenir you bring back isn’t a fridge magnet or a tea towel, but a new illness?

International travel poses a risk of catching something more than a run-of-the-mill bug, so it’s important to be vigilant for the telltale symptoms. Here are the main ones to look out for while away and when you return.


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Fever

Fever is a common symptom to note after international travel – especially to tropical or subtropical regions. While a feature of many different illnesses, it can be the first sign of an infection – sometimes a serious one.

One of the most well-known travel-related illnesses linked to fever is malaria. Spread by mosquito bites in endemic regions, malaria is a protozoal infection that often begins with flu-like symptoms, such as headache and muscle aches, progressing to severe fever, sweating and shaking chills.

Other signs can include jaundice (yellowing of the skin or eyes), swollen lymph nodes, rashes and abdominal pain – though symptoms vary widely and can mimic many other illnesses.

Prompt medical attention is essential. Malaria is serious and can become life threatening. It’s also worth noting that symptoms may not appear until weeks or even months after returning home. In the UK, there are around 2,000 imported malaria cases each year.

Travellers to at-risk areas are strongly advised to take preventative measures. This includes mosquito-bite avoidance as well as prescribed antimalarial medications, such as Malarone and doxycycline. Although these drugs aren’t 100% effective, they significantly reduce the risk of infection.

Aside from malaria, other mosquito-borne diseases can cause fever. Dengue fever, a viral infection found in tropical and subtropical regions, leads to symptoms including high temperatures, intense headaches, body aches and rashes, which overlap with both malaria and other common viral illnesses.

Most people recover with rest, fluids and paracetamol, but in some instances, dengue can become severe and requires emergency hospital treatment. A vaccine is also available – but is only recommended for people who have had dengue before, as it provides good protection in this group.

Any fever after international travel should be taken seriously. Don’t brush it off as something you’ve just picked up on the plane – please see a doctor. A simple test could lead to early diagnosis and might save your life.

A man spraying bug-repellant on his forearm.
Avoiding being bitten is a good defensive measure.
Jaromir Chalabala/Shutterstock

Diarrhoea

Few travel-related issues are as common – or as unwelcome – as diarrhoea. It’s estimated that up to six in ten travellers will experience at least one episode during or shortly after their trip. For some, it’s an unpleasant disruption mid-holiday; for others, symptoms emerge once they’re back home.

Traveller’s diarrhoea is typically caused by eating food or drinking water containing certain microbes (bacteria, viruses, parasites) or their toxins. Identifying the more serious culprits early is essential – especially when symptoms go beyond mild discomfort.

Warning signs to look out for include large volumes of watery diarrhoea, visible blood in the stool or explosive bowel movements. These may suggest a more serious infection, such as giardia, cholera or amoebic dysentery.

These conditions are more common in regions with poor sanitation and are especially prevalent in parts of the tropics.

Some infections may require targeted antibiotics or antiparasitic treatment. But regardless of the cause, the biggest immediate risk with any severe diarrhoea is dehydration from copious fluid loss. In serious cases, hospital admission for intravenous fluids may be necessary.

The key message for returning travellers: if diarrhoea is severe, persistent or accompanied by worrying symptoms, see a doctor. What starts as a nuisance could quickly escalate without the right care.

And if you have blood in your stool, make sure you seek medical advice.

Jaundice

If you’ve returned from a trip with a change in skin tone, it may not just be a suntan. A yellowish tint to the skin – or more noticeably, the whites of the eyes – could be a sign of jaundice, another finding that warrants medical attention.

Jaundice is not a disease itself, but a visible sign that something may be wrong with either the liver or blood. It results from a buildup of bilirubin, a yellow pigment that forms when red blood cells break down, and which is then processed by the liver.

A person's yellow eye, showing signs of jaundice.
Signs of jaundice should be taken very seriously.
sruilk/Shutterstock.com

Several travel-related illnesses can cause jaundice. Malaria is one culprit as is the mosquito-borne yellow fever. But another common cause is hepatitis – inflammation of the liver.

Viral hepatitis comes in several forms. Hepatitis A and E are spread via contaminated food or water – common in areas with poor sanitation. In contrast, hepatitis B and C are blood-borne, transmitted through intravenous drug use, contaminated medical equipment or unprotected sex.

Besides jaundice, hepatitis can cause a range of symptoms, including fever, nausea, fatigue, vomiting and abdominal discomfort. A diagnosis typically requires blood tests, both to confirm hepatitis and to rule out other causes. While many instances of hepatitis are viral, not all are, and treatment depends on the underlying cause.

As we’ve seen, a variety of unpleasant medical conditions can affect the unlucky traveller. But we’ve also seen that the associated symptoms are rather non-specific. Indeed, some can be caused by conditions that are short-lived and require only rest and recuperation to get over a rough few days. But the area between them is decidedly grey.

So plan your trip carefully, be wary of high-risk activities while abroad – such as taking drugs or having unprotected sex – and stay alert to symptoms that develop during or after travel. If you feel unwell, don’t ignore it. Seek medical attention promptly to identify the cause and begin appropriate treatment.

The Conversation

Dan Baumgardt does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Just back from holiday and not feeling well? Here are the symptoms you should take seriously – https://theconversation.com/just-back-from-holiday-and-not-feeling-well-here-are-the-symptoms-you-should-take-seriously-260013

Why Jane Austen is definitely not just for girls

Source: The Conversation – UK – By Shelley Galpin, Lecturer in Culture, Media and Creative Industries, King’s College London

In my former life as a teacher, I once had a job interview in which I was asked how I dealt with the problem of teaching Jane Austen to boys.

Having had experience of this situation, I confidently told my interviewer (a maths teacher) that the “problem” they were assuming didn’t actually exist, and that it was perfectly possible to teach Austen’s novels to mixed-sex classes with successful results. My answer was met by barely veiled scepticism – and suffice to say, I didn’t get the job.

But where did this popular perception come from? Austen’s genius has been recognised from the earliest days of the development of a canon of English literature, and has never really fallen out of fashion. So it might seem odd that the suitability of her work for a co-educational class is the subject of genuine debate.


This article is part of a series commemorating the 250th anniversary of Jane Austen’s birth. Despite having published only six books, she is one of the best-known authors in history. These articles explore the legacy and life of this incredible writer.


The increasingly intertwined associations of Austen’s literature with the many (often excellent) adaptations of her work may not help the matter, with screen retellings often foregrounding the love stories and losing much of the ironic tone that characterises Austen’s narrative style.

The myriad repackaged editions of her novels that adorn bookshelves with pastel-toned floral designs, or images of anonymous portraits of passive young women, also do little to challenge the popular perception of these books as stories for women and girls.

Finally, and perhaps most troublingly, is the still-commonly held notion that stories with a female protagonist do not have wide-ranging appeal and must be consigned to a “niche interest” bracket. Male-led stories, in contrast, have long been considered to hold universal relevance for audiences.

This last point is a bigger issue concerning the publishing and entertainment industries, so I will largely park this one. But I will point out that, as others have argued in relation to Austen’s work, the classroom is an excellent place to start countering the assumptions of the “everyman” male experience, in contrast to the “special interest” attitude to female perspectives.

With regards to the teaching of Austen’s novels, drawing on my experiences both as a scholar and as a teacher, I believe her novels can speak to young readers of different genders and from diverse backgrounds.

Money, power and inequality

Addressing the ways in which Austen’s novels tend to be packaged, I asked my students, typically aged 16-18, to explore the ideas at the heart of the novels by redesigning the book covers to better reflect these themes.

The flowers and passive young women were gone. The redesigned book covers often focused on the idea of wealth, through pictures of differing piles of money, or power, such as the image of imbalanced scales to symbolise the unequal societies inhabited by Austen’s characters.

Because, as much as they are love stories, Austen’s heroines typically achieve their “happy endings” against a backdrop of money worries, power struggles, familial tension and gendered social hierarchies. While her novels are rightly celebrated for highlighting the unequal treatment of the sexes during her lifetime, it is reductive to see this as their sole contribution to social commentary.

Take Austen’s last completed novel, Persuasion. Here, Anne Elliot – over the hill at the ripe old age of 27 – begins the novel by rueing her broken engagement to Captain Wentworth, which she had been persuaded to break off eight years earlier due to his lack of fortune.

While the narrative focus is on Anne, who is left to regret her choice and wonder whether she will ever be able to escape her odious father and siblings, the broken-hearted Wentworth, who reappears in Anne’s life shortly after the start of the novel, is at least as much a victim of the situation as Anne herself.

At its heart, this is a story of a young woman who allowed herself to be persuaded to make a bad choice, and a young man who, through no fault of his own, was deemed not good enough due to his lack of wealth. The experiences of these characters, although they are older than the average school student, are highly relatable and sympathetic to many teenagers, who may well have experienced meddling family members or unfair judgments of their own.

Take also Northanger Abbey, in which fanciful Catherine Morland mixes fact and fiction and imagines the titular abbey to be a site of gothic intrigue, only to discover that the real horror derives from a controlling patriarch and his sexually predatory oldest son.

Here again, the novel cleverly makes the point that social inequalities, and the choices of those motivated by their love of money and power, are the real darkness at the heart of Austen’s society.

In my experience, students of all genders have been able to appreciate and relate to Northanger Abbey’s depictions of the loss of innocence, class inequality, and the experience of being subject to the sometimes obscure decisions of more powerful individuals.

Austen’s works, far from being the simple love stories of popular perception, are also razor-sharp satires of social and gendered inequalities. Full of witty observations and universally relatable experiences, there is a reason for the consistent popularity of her writing 250 years after her birth.

To fail to recognise this in the classroom is to do a disservice to all our students, as well as to Austen herself.

The Conversation

Shelley Galpin does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Why Jane Austen is definitely not just for girls – https://theconversation.com/why-jane-austen-is-definitely-not-just-for-girls-259193

How 1860s Mexico offered an alternative vision for a liberal international order

Source: The Conversation – UK – By Tom Long, Professor of International Relations, Department of Politics and International Studies, University of Warwick

The Execution of Emperor Maximilian of Mexico, June 19, 1867 Edouard ManetWikimedia Commons

In 1867, the world’s most powerful statesmen, including Austria’s Emperor Franz Josef, France’s Napoleon III and US secretary of state, William H. Seward, petitioned the Mexican government to spare the life of a condemned man.

Mexico’s ragtag army and militias had just humbled France, then Europe’s preeminent land power. The costly six-year campaign drained the French treasury and eroded Napoleon III’s domestic support. Napoleon’s ambition to transform Mexico into a client empire under a Vienna-born, Habsburg archduke, crowned Maximilian I, ended in spectacular failure.

After his defeat, Maximilian was brought before a Mexican military tribunal. European monarchs regarded the prisoner as their peer, but Mexican liberals convicted him as a piratical invader, usurper and traitor. Despite indignant appeals from European courts, President Benito Juárez refused to commute his sentence. The would-be emperor was executed by firing squad.


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The controversy went beyond one monarch’s fate. It crystallised a clash between opposed visions of global order — as Peru’s president Ramón Castilla said at the time, it was a “war of the crowns against liberty caps”.

Today, world politics are in flux. The so-called liberal international order, nominally grounded in multilateralism, open markets, human rights and the rule of law, is facing its gravest crisis since the second world war. Former advocates such as the United States now openly flout international law and undermine the very norms they once championed. China remains ambivalent, while Russia unabashedly hastens the order’s unravelling.

More broadly, the old post-second world war order appears out of step with the global south and with widespread anger over double standards exposed by the wars in Ukraine, Gaza and Iran.
Amid today’s crises, a world order arranged for and by the great powers looks both insufficient and doomed to lack legitimacy. Reordering will require support from diverse actors, including states across the global south.

1860s: a turbulent decade

The 1860s were a turbulent, although often overlooked, moment of global reordering. Technological shifts – the telegraph, electricity, steamships and railways – appeared as disruptive then as AI does today. Combined with shifting power dynamics, these transformations accelerated imperial expansion. Yet the rules of the emerging order remained uncertain, even among the imperial powers themselves.

In Europe, networks of dynastic rule still carried weight in international politics. Under growing pressure, the ancien régime sought to reinvent and reassert itself. The old empires often justified their expansion by promising to bring order and progress to supposedly backward peoples. But that “civilising mission” clashed with a worldview emerging from Spanish America – where countries had thrown off colonial rule to establish independent republics.

As we wrote in a recent article in American Political Science Review, Spanish American diplomats articulated a republican vision of international order centred on the protection of weaker states from domination by great powers.

Fending off Europe’s empires

Divided by civil conflict, Mexico became an easy target for European empires. Mexico’s Liberal party had regained power but faced internal dissent and crippling foreign debt. Britain, France and Spain formed a coalition to invade and demand repayment. France, however, had more ambitious designs.

Exploiting the distraction of the US civil war, Napoleon III dreamed of transforming Mexico into a Latin stronghold against Yankee expansion. Best of all, Napoleon thought the scheme would turn a profit. A stable Mexican empire could repay the costs of the intervention – with interest – by increasing production from the country’s famed silver mines. Meanwhile, France would gain a receptive market for its exports and a grateful geopolitical subordinate.

Maximilian, a young Austrian prince of the house of Hapsburg, somewhat naively accepted the offer to rule a distant and unfamiliar land. He dreamed of regenerating Mexico through a liberal monarchy while reviving his family’s declining dynasty.

Led by Juárez, Mexico’s liberals fiercely resisted Maximilian’s rule. While militarily Juárez was consistently on the defensive, he remained diplomatically proactive. The Juaristas encouraged US sympathies that proved decisive after the end of the civil war. They also enjoyed solidarity – though limited material support – from other Spanish American republics. Although the monarchies of Europe all recognised Maximilian as Mexican emperor, Juárez’s defiance became a rallying point for liberals and republicans in Europe.

A monument to Juárez in central Mexico City.
Hero to the liberals: a monument to Juárez in central Mexico City.
Hajor~commonswiki, CC BY-ND

Vision of a new order

Beyond stoking sympathies, Juárez and his followers offered trenchant critiques of unequal international rules and practices cloaked in liberal guise.

First, the “republican internationalism” of Mexico’s Juaristas stood in direct opposition to European liberals’ “civilising mission”. Latin American republicans rejected the notion that progress could be imposed on their countries from abroad – though some echoed civilising rhetoric toward their own non-white populations, who like in the US were subject to campaigns of violence and dispossession that stretched from northern Mexico to the Patagonia. Many Latin American liberals likewise remained silent about empire elsewhere.

Second, the Juarista vision placed popular sovereignty, not dynastic ties, at the heart of legitimate statehood. These ideas drew on Mexico’s independence tradition and the principles enshrined in the 1857 constitution. European intervention, in this view, aimed to suppress popular rule in the Americas and extend the reaction against the failed revolutions of 1848, which had seriously threatened the old order when they raged across Europe.

Third, popular sovereign states were equal under international law, regardless of power, wealth, or internal disorder. Sovereign equality also underpinned Latin America’s strong commitment to non-intervention. Liberal writer and diplomat Francisco Zarco, a close confidante of Juárez, condemned frequent European economic justifications for intervention as the work of “smugglers and profiteers who wrap themselves in the flags of powerful nations”.

Finally, Mexican liberals called for an international system premised on republican fraternity, drawing on aspirations for cooperation that went back to liberator Simón Bolívar. The independence leader and committed republican convened a conference in 1826, hoping that a confederation of the newly independent Spanish American states would “be the shield of our new destiny”.

Similar arguments for an international order that advances non-domination still resonate in the global south today. The Mexican experience also underscores that the architects of international order have never come exclusively from the global north – and those who shape its future will not either.

The Conversation

Tom Long receives support from UK Arts and Humanities Research Council grant AH/V006622/1, Latin America and the peripheral origins of the 19th-century international order.

Carsten-Andreas Schulz receives support from UK Arts and Humanities Research Council grant AH/V006622/1, Latin America and the peripheral origins of the 19th-century international order.

ref. How 1860s Mexico offered an alternative vision for a liberal international order – https://theconversation.com/how-1860s-mexico-offered-an-alternative-vision-for-a-liberal-international-order-260228

UK air quality is improving but pollution targets are still being breached – new study

Source: The Conversation – UK – By James Weber, Lecturer in Atmospheric Radiation, Composition and Climate, University of Reading

Tony Skerl/Shutterstock

An estimated 4.2 million deaths can be attributed to poor air quality each year. Poor air quality is the largest fixable environmental public health risk in the world.

Our new study presents analysis of the UK-wide trends for three major pollutants – nitrogen dioxide (NO₂), ozone (O₃) and tiny particulate matter known as PM₂.₅ – between 2015 and 2024 to calculate how often air quality targets were breached.

Both nitrogen dioxide and PM₂.₅ showed robust decreases over the period 2015-2024, declining on average by 35% and 30% respectively. In 2015-2016, the average Defra monitoring site exceeded the nitrogen dioxide target on 136 days per year. By 2023-2024, this had dropped to 40 days per year.

For PM₂.₅, the number of days the average Defra site breached the target went from 40 to 22 days per year. While this is an improvement, the World Health Organization advises that these targets should not be breached on more than four days per year.


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To examine the sources of pollution, we studied how pollutants were influenced by factors including time of day, day of week, wind direction and origin, location of monitoring station and even interactions between pollutant. Nitrogen dioxide concentrations are highest at monitoring sites located next to busy urban roads, lower at urban background sites (which are located at sites further from traffic such as parks) and much lower in rural sites.

Profiles over 24-hour periods show strong nitrogen dioxide peaks coinciding with the morning and evening rush hours and clear decreases at weekends. This all points to local traffic emissions being the major source. While PM₂.₅ is also higher in urban than rural locations, it exhibits more muted rush hour peaks and is more consistent between the week and weekend, suggesting traffic plays a smaller role.

We explored how wind direction and origin influenced nitrogen dioxide and PM₂.₅ by running a weather forecast model backwards for three UK locations: Reading, Sheffield and Glasgow. While nitrogen dioxide showed only a weak correlation with wind origin, PM₂.₅ was much more dependent.

For example, the probability of PM₂.₅ breaching air quality targets on a given day exceeded 15% only when the air had come from continental Europe and, for Sheffield and Glasgow, passed over much of the UK too.

NO₂ and PM₂.₅ pollution reduced over the last decade but remains too high while O₃ pollution has worsened.
James Weber, CC BY

While nitrogen dioxide and PM₂.₅ showed clear improvements, ozone exhibited a less positive picture. Ozone increased in 115 of the 121 sites considered, growing by 17% on average. A similar trend was observed across much of northern Europe. The average number of days ozone exceeded the World Health Organization target doubled from seven to 14 per year.

This may seem modest at present, but several factors are conspiring to drive ozone higher. In much of the UK, the relatively high levels of nitrogen dioxide effectively suppress ozone: as a result, ozone is higher in rural rather than urban areas and, as nitrogen dioxide decreases, ozone will increase further.

Unless, that is, we also target nitrogen dioxide’s partner in crime, volatile organic compounds (VOCs). VOCs are critical to the production of ozone and are emitted from human sources such as traffic and industry, plus certain types of vegetation like oak trees. While emissions of nitrogen dioxide fell by 20% between 2015-2024, human-driven VOC emissions declined by only 1%.

Ozone also increases in periods of hot weather due to elevated VOC emissions from vegetation and greater mixing of air from higher up in the atmosphere into the layer closest to the surface. Incidents of hot weather are only going to become more frequent in the UK, making it even more critical to crack down on human-driven VOC emissions to limit ozone pollution.

Up in the air

In the UK, considerable efforts have been made to improve air quality. Its importance has been enshrined in law for nearly 70 years. An extensive network of air quality monitoring sites is maintained by the UK government’s Department for Environment, Food and Rural Affairs (Defra) plus devolved and local authorities.

Local authorities are required to monitor air quality and develop air quality management areas in places where targets are unlikely to be met. Clean air or low emission zones have been introduced as a result.

However, air quality policy must be designed to reflect the complex nature of each pollutants’ drivers. Nitrogen dioxide is dominated by local sources, PM₂.₅ by transport from further afield and ozone by a combination of both.

big air quality measuring equipment unit , grass in background, white sky
An air quality monitoring station.
Chemival/Shutterstock

Local and national policies that cut traffic emissions by incentivising the replacement of older cars with newer, cleaner vehicles, retrofitting buses and restricting entry of the most polluting vehicles into towns and cities will probably reduce nitrogen dioxide further.

But, if nitrogen dioxide decreases are not accompanied by reductions to VOC emissions, locally and internationally, ozone will continue to rise, especially with more frequent hot weather.

By contrast, most PM₂.₅ comes from sources further afield, including industry and agriculture from other parts of the UK and beyond, so reductions hinge on stronger national and global policies that target emissions at source rather than just local efforts.

Air pollution doesn’t respect borders and while the technologies to facilitate continued improvements exist, they must be deployed in joined-up, international efforts.


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The Conversation

James Weber does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. UK air quality is improving but pollution targets are still being breached – new study – https://theconversation.com/uk-air-quality-is-improving-but-pollution-targets-are-still-being-breached-new-study-260961

UNESCO grants World Heritage status to Khmer Rouge atrocity sites – paving the way for other sites of conflict

Source: The Conversation – Global Perspectives – By Rachel Hughes, Associate Professor of Geography, The University of Melbourne

A series of atrocity sites of the Khmer Rouge regime in Cambodia have been formally entered onto the World Heritage list, as part of the 47th session of the World Heritage Committee.

This is not only important for Cambodia, but also raises important questions for atrocity sites in Australia.

Before this, the World Heritage list only recognised seven “sites of memory” associated with recent conflicts, which UNESCO defines as “events having occurred from the turn of the 20th century” under its criterion vi. These sat within a broader list of more than 950 cultural sites.

In recent years, experts have intensely debated the question of whether a site associated with recent conflict could, or should, be nominated and evaluated for World Heritage status. Some argue such listings would contradict the objectives of UNESCO and its spirit of peace, which was part of the specialised agency’s mandate after the destruction of two world wars.

Sites associated with recent conflicts can be divisive. For instance, when Japan nominated the Hiroshima Peace Memorial, both China and the United States objected and eventually disassociated from the decision. The US argued the nomination lacked “historical perspective” on the events that led to the bomb’s use. Meanwhile, China argued listing the property would not be conducive for peace as other Asian countries and peoples had suffered at the hands of the Japanese during WWII.

Heritage inscriptions risk reinforcing societal divisions if they conserve a particular memory in a one-sided way.

Nonetheless, the World Heritage Committee decided in 2023 to no longer preclude such sites for inscription. This was done partly in recognition of how these sites may “serve the peace-building mission of UNESCO”.

Shortly after, three listing were added: the ESMA Museum and Site of Memory, a former clandestine centre for detention, torture and extermination in Argentina; memorial sites of the Rwandan genocide at Nyamata, Murambi, Gisozi and Bisesero; and funerary and memory sites of the first world war in Belgium and France.

A number of legacy sites associated with Nelson Mandela’s human rights struggle in South Africa were also added last year.

Atrocities of the Khmer Rouge

The recently inscribed Cambodian Memorial Sites include prisons S-21 (now known as Tuol Sleng Genocide Museum) and M-13, as well as the execution site Choeung Ek.

These sites were nominated for their value in showing the development of extreme mass violence in relation to the security system of the Khmer Rouge in 1975–79. They also have value as places of memorialisation, peace and learning.

The Khmer Rouge developed its methods of disappearance, incarceration and torture of suspected “enemies” during the civil conflict of 1970–75. It established a system of local-level security centres in so-called “liberated” areas.

One of these centres was known as M-13, a small, well-hidden prison in the country’s rural southwest. A man named Kaing Guek Eav – also called Duch – was responsible for prisoners at M-13.

Shortly after the entire country fell to the Khmer Rouge in April 1975, Duch was assigned to lead the headquarters of the regime’s security system: a large detention and torture centre known as S-21.

Under his instruction, tens of thousands of people were detained in inhumane conditions, tortured and interrogated. Many detainees were later taken to the outskirts of the city to be brutally killed and buried in pits at a place called Choeung Ek.

The sites operated until early 1979, when the Khmer Rouge was forced from power.

The S-21 facility and the mass graves at Choeung Ek have long been memorialised as the Tuol Sleng Genocide Museum and the Choeung Ek Genocidal Centre.

However, the former M-13 site shows few visual clues to its prior use, and has only recently been investigated by an international team led by Cambodian archaeologist and museum director Hang Nisay. The site is on an island in a small river that forms the boundary between the Kampong Chhnang and Kampong Speu provinces.

Further research, site protection and memorialisation activities will now be supported, with help from locals.

From repression to reflection

The Cambodian memorial sites have been recognised as holding “outstanding universal value” for the way they evidence one of the 20th century’s worst atrocities, and are now places of memory.

In its nomination dossier for these sites, Cambodia drew on findings from the Khmer Rouge Tribunal to verify and link the conflict and the sites.

In 2010, the tribunal found Duch guilty of crimes against humanity and grave breaches of the Geneva Conventions. Duch was sentenced to 30 years in prison (which eventually turned into life imprisonment). He died in 2020.

While courts such as the International Criminal Court have previously examined the destruction of heritage as an international crime, drawing on legal findings to assert heritage status is an unusual inverse. It raises important questions about the legacies of former UN-supported tribunals and the ongoing implications of their findings.

The recent listings also raise questions for Australia, which has many sites of documented mass killing associated with colonisation and the frontier wars that lasted into the 20th century.

Might Australia nominate any of these atrocity sites in the future? And could other processes such as truth-telling, reparation and redress support (or be supported by) such nominations?

The Conversation

Rachel Hughes has consulted to UNESCO Cambodia.

Maria Elander does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. UNESCO grants World Heritage status to Khmer Rouge atrocity sites – paving the way for other sites of conflict – https://theconversation.com/unesco-grants-world-heritage-status-to-khmer-rouge-atrocity-sites-paving-the-way-for-other-sites-of-conflict-260923