How the US cut climate-changing emissions while its economy more than doubled

Source: The Conversation – USA (2) – By Valerie Thomas, Professor of Industrial Engineering, Georgia Institute of Technology

Wind power near Dodge City, Kan. Halbergman/iStock/Getty Images Plus

Countries around the world have been discussing the need to rein in climate change for three decades, yet global greenhouse gas emissions – and global temperatures with them – keep rising.

When it seems like we’re getting nowhere, it’s useful to step back and examine the progress that has been made.

Let’s take a look at the United States, historically the world’s largest greenhouse gas emitter. Over those three decades, the U.S. population soared by 28% and the economy, as measured by gross domestic product adjusted for inflation, more than doubled.

Yet U.S. emissions from many of the activities that produce greenhouse gases – transportation, industry, agriculture, heating and cooling of buildings – have remained about the same over the past 30 years. Transportation is a bit up; industry a bit down. And electricity, once the nation’s largest source of greenhouse gas emissions, has seen its emissions drop significantly.

Overall, the U.S. is still among the countries with the highest per capita emissions, so there’s room for improvement, and its emissions haven’t fallen enough to put the country on track to meet its pledges under the 10-year-old Paris climate agreement. But U.S. emissions are down about 15% over the past 10 years.

Here’s how that happened:

US electricity emissions have fallen

U.S. electricity use has been rising lately with the shift toward more electrification of cars and heating and cooling and expansion of data centers, yet greenhouse gas emissions from electricity are down by almost 30% since 1995.

One of the main reasons for this big drop is that Americans are using less coal and more natural gas to make electricity.

Both coal and natural gas are fossil fuels. Both release carbon dioxide to the atmosphere when they are burned to make electricity, and that carbon dioxide traps heat, raising global temperatures. But power plants can make electricity more efficiently using natural gas compared with coal, so it produces less emissions per unit of power.

Why did the U.S. start using more natural gas?

Research and technological innovation in fracking and horizontal drilling have allowed companies to extract more oil and gas at lower cost, making it cheaper to produce electricity from natural gas rather than coal.

As a result, utilities have built more natural gas power plants – especially super-efficient combined cycle gas power plants, which produce power from gas turbines and also capture waste heat from those turbines to generate more power. More coal plants have been shutting down or running less.

Because natural gas is a more efficient fuel than coal, it has been a win for climate in comparison, even though it’s a fossil fuel. The U.S. has reduced emissions from electricity as a result.

Significant improvements in energy efficiency, from appliances to lighting, have also played a role. Even though tech gadgets seem to be recharging everywhere all the time today, household electricity use, per person, plateaued over the first two decades of the 2000s after rising continuously since the 1940s.

Costs for renewable electricity, batteries fall

U.S. renewable electricity generation, including wind, solar and hydro power, has nearly tripled since 1995, helping to further reduce emissions from electricity generation.

Costs for solar and wind power have fallen so much that they are now cheaper than coal and competitive with natural gas. Fourteen states, including most of the Great Plains, now get at least 30% of their power from solar, wind and battery storage.

While wind power has been cost competitive with fossil fuels for at least 20 years, solar photovoltaic power has only been competitive with fossil fuels for about 10 years. So expect deployment of solar PV to continue to increase, both in the U.S. and internationally, even as U.S. federal subsidies disappear.

Both wind and solar provide intermittent power: The sun does not always shine, and the wind does not always blow. There are a number of ways utilities are dealing with this. One way is to use demand management, offering lower prices for power during off-peak periods or discounts for companies that can cut their power use during high demand. Virtual power plants aggregate several kinds of distributed energy resources – solar panels on homes, batteries and even smart thermostats – to manage power supply and demand. The U.S. had an estimated 37.5 gigawatts of virtual power plants in 2024, equivalent to about 37.5 nuclear power reactors.

Charts show cost decline compared with fossil fuels.
Globally, the costs of solar, onshore wind and EV batteries fell quickly over the first two decades of the 2000s.
IPCC 6th Assessment Report

Another energy management method is battery storage, which is just now beginning to take off. Battery costs have come down enough in the past few years to make utility-scale battery storage cost-effective.

What about driving?

In the U.S., gasoline consumption has remained roughly constant and electric vehicle sales have been slow. Some of this could be due to the success of fracking: U.S. petroleum production has increased, and gasoline and diesel prices have remained relatively low.

People in other countries are switching to electric vehicles more rapidly than in the U.S. as the cost of EVs has fallen. Chinese consumers can buy an entry-level EV for under US$10,000 in China with the help of government subsidies, and the country leads the world in EV sales.

In 2024, people in the U.S. bought 1.6 million EVs, and global sales reached 17 million, which was up 25% from the year before.

The unknowns ahead: What about data centers?

The construction of new data centers, in part to serve the explosive growth of artificial intelligence, is drawing a lot of attention to future energy demand and to the uncertainty ahead.

Data centers are increasing electricity demand in some locations, such as northern Virginia, Dallas, Phoenix, Chicago and Atlanta. The future electricity demand growth from data centers is still unclear, though, meaning the effects of data centers on electric rates and power system emissions are also uncertain.

However, AI is not the only reason to watch for increased electricity demand: The U.S. can expect growing electricity demand for industrial processes and electric vehicles, as well as the overall transition from using oil and gas for heating and appliances to using electricity that continues across the country.

The Conversation

Valerie Thomas receives funding from the US Department of Energy

ref. How the US cut climate-changing emissions while its economy more than doubled – https://theconversation.com/how-the-us-cut-climate-changing-emissions-while-its-economy-more-than-doubled-268763

Chatbots don’t judge! Customers prefer robots over humans when it comes to those ’um, you know’ purchases

Source: The Conversation – USA (2) – By Jianna Jin, Assistant Professor of Marketing at Mendoza College of Business, University of Notre Dame

When it comes to inquiring about – ahem – certain products, shoppers prefer the inhuman touch.

That is what we found in a study of consumer habits when it comes to products that traditionally have come with a degree of embarrassment – think acne cream, diarrhea medication, adult sex toys or personal lubricant.

While brands may assume consumers hate chatbots, our series of studies involving more than 6,000 participants found a clear pattern: When it comes to purchases that make people feel embarrassed, consumers prefer chatbots over human service reps.

In one experiment, we asked participants to imagine shopping for medications for diarrhea and hay fever. They were offered two online pharmacies, one with a human pharmacist and the other with a chatbot pharmacist.

The medications were packaged identically, with the only difference being their labels for “diarrhea” or “hay fever.” More than 80% of consumers looking for diarrhea treatment preferred a store with a clearly nonhuman chatbot. In caparison, just 9% of those shopping for hay fever medication preferred nonhuman chatbots.

This is because, participants told us, they did not think chatbots have “minds” – that is, the ability to judge or feel.

In fact, when it comes to selling embarrassing products, making chatbots look or sound human can actually backfire. In another study, we asked 1,500 people to imagine buying diarrhea pills online. Participants were randomly assigned to one of three conditions: an online drugstore with a human service rep, the same store with a humanlike chatbot with a profile photo and name, or the same store with a chatbot that was clearly botlike in both its name and icon.

We then asked participants how likely they would be to seek help from the service agent. The results were clear: Willingness to interact dropped as the agent seemed more human. Interest peaked with the clearly machinelike chatbot and hit its lowest point with the human service rep.

Why it matters

As a scholar of marketing and consumer behavior, I know Chatbots play an increasingly large part in e-retail. In fact, one report found 80% of retail and e-commerce business use AI chatbots or plan to use them in the near future.

When it comes to chatbots, companies want to answer two questions: When should they deploy chatbots? And how should the chatbots be designed?

Many companies may assume the best strategy is to make bots look and sound more human, intuiting that consumers don’t want to talk to machines.

But our findings show the opposite can be true. In moments when embarrassment looms large, humanlike chatbots can backfire.

The practical takeaway is that brands should not default to humanizing their chatbots. Sometimes the most effective bot is the one that looks and sounds like a machine.

What still isn’t known

So far, we’ve looked at everyday purchases where embarrassment is easy to imagine, such as hemorrhoid cream, anti-wrinkle cream, personal lubricant and adult toys.

However, we believe the insights extend more broadly. For example, women getting a quote for car repair may be more self-conscious, as this is a purchase context where women have been traditionally more stigmatized. Similarly, men shopping for cosmetic products may feel judged in a category that has traditionally been marketed to women.

In contexts like these, companies could deploy chatbots – especially ones that clearly sound machinelike – to reduce discomfort and provide a better service. But more work is needed to test that hypothesis.

The Research Brief is a short take on interesting academic work.

The Conversation

Jianna Jin 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. Chatbots don’t judge! Customers prefer robots over humans when it comes to those ’um, you know’ purchases – https://theconversation.com/chatbots-dont-judge-customers-prefer-robots-over-humans-when-it-comes-to-those-um-you-know-purchases-266105

The unraveling of workplace protections for delivery drivers: A tale of 2 workplace models

Source: The Conversation – USA (2) – By Daniel Schneider, Professor of Social Policy, Harvard Kennedy School

American households have become dependent on Amazon.

The numbers say it all: In 2024, 83% of U.S. households received deliveries from Amazon, representing over 1 million packages delivered each day and 9 billion individual items delivered same-day or next-day every year. In remarkably short order, the company has transformed from an online bookseller into a juggernaut that has reshaped retailing. But its impact isn’t limited to how we shop.

Behind that endless stream of packages are more than a million people working in Amazon fulfillment centers and delivery vehicles. Through its growing dominance in retail, Amazon has eclipsed its two major competitors in the delivery business, UPS and FedEx, in terms of package volume.

What is life like for those workers? Between Amazon’s rosy public relations on the one hand and reporters’ and advocates’ troubling exposés on the other, it can be hard to tell. Part of the reason is that researchers like us don’t have much reliable data: Workers’ experiences at companies such as Amazon, UPS and FedEx can be a black box. Amazon’s arm’s-length relationship with the drivers it depends on for deliveries makes finding answers even harder.

But that didn’t stop us. Using unique data from the Shift Project, our new study, co-authored with Julie Su and Kevin Bruey, offers the first direct, large-scale comparison of working conditions for drivers and fulfillment employees at Amazon, UPS and FedEx based on survey responses by more than 9,000 workers.

What we found was deeply troubling – not only for Amazon drivers but also for the future of work in the delivery industry as a whole.

2 models, 2 realities

For nearly a century, driving delivery trucks has been a pathway to the middle class, as epitomized by unionized jobs at UPS. UPS drivers, who have been members of the Teamsters union for decades, are employees with legal protections and a collective-bargaining contract.

In contrast, Amazon has embraced a very different model. Most important is that Amazon does not directly employ nearly any of its delivery drivers.

Instead, its transportation division, Amazon Logistics, relies on two methods to deliver most of its shipments: Amazon Flex, a platform-like system that treats drivers like independent contractors, and Amazon DSP, a franchise-like system that uses subcontractors. DSP subcontractors are almost all nonunion, and the company has cut ties with DSP contractors whose drivers have attempted to unionize. These practices place downward pressure on the wages and working conditions of drivers throughout the industry.

The impact on workers is stark.

Delivery workers at Amazon receive significantly lower wages than at UPS and FedEx, we found. Wage gaps are especially large between the delivery workers at Amazon, who earn US$19 an hour on average, and the unionized drivers at UPS, who make $35.

We also found that unionized UPS drivers have a clear pathway to upward mobility, while Amazon drivers don’t. At UPS, wages increase sharply the longer a worker has been on the job. Pay starts at $21 an hour, reaching nearly $40 an hour for drivers who’ve been with the company for at least 10 years – which is more than half of them.

At Amazon, wages start at $17 an hour and don’t increase with tenure. Nearly half of workers have less than a year on the job.

Between lower wages, more unstable schedules, fewer benefits and limited protections from employment laws, Amazon drivers struggle to make ends meet. More than 1 in 4 told us they had gone hungry because they couldn’t afford enough to eat within the past month, and 33% said they couldn’t cover their utility bills. Compared to drivers at UPS and FedEx, Amazon drivers face significant financial instability.

On top of that, Amazon drivers face intense workplace surveillance and speed tracking – as do workers at the company’s fulfillment centers. Sixty percent of both types of Amazon workers received frequent feedback on the speed of their work from a technological device, and more than two-thirds said that Amazon monitors the quality of their work using technology. That degree of technological surveillance and tracking far outpaces what UPS and FedEx workers told us they were exposed to, representing an extreme case of worker monitoring and performance assessment.

Using nonemployee drivers contributed to the exponential growth of Amazon as a package delivery company. In 2023, Amazon for the first time delivered more packages than UPS, making it the second-largest parcel carrier in the country – surpassed only by the U.S. Postal Service.

By building an online retail empire with the capacity to deliver the majority of its own shipments, Amazon’s expansion continues. UPS, by contrast, has seen drops in its revenues, stock value and market capitalization. Amazon’s sheer size and giglike approach are therefore changing industry standards, putting downward pressure on wages, benefits and job stability across the delivery sector.

The contrast between Amazon and UPS drivers isn’t just about two companies using different models for package delivery – it represents two competing futures for work. As the second-largest retail company and now largest private delivery company in the U.S., Amazon exerts market power that impacts the working conditions of workers beyond its own delivery drivers. Recent reporting indicates that UPS has been experimenting with using gig deliveries, much to the consternation of the union that represents three-quarters of its workforce.

In the post-World War II era, increasing unionization led to better wages and conditions across much of the economy, including nonunionized sectors. The continuing expansion of Amazon’s business model could signal the unraveling of wages, benefits and protections for working people more generally.

The Conversation

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.

ref. The unraveling of workplace protections for delivery drivers: A tale of 2 workplace models – https://theconversation.com/the-unraveling-of-workplace-protections-for-delivery-drivers-a-tale-of-2-workplace-models-268164

How to keep dementia from robbing your loved ones of their sense of personhood – tips for caregivers

Source: The Conversation – USA (3) – By R. Amanda Cooper, Assistant Professor of Communication, University of Connecticut

Different communication styles are needed for the progressive phases of dementia. Halfpoint Images/Moment via Getty Images

Every three seconds, someone in the world develops dementia. There are over 6 million people living with dementia in the U.S. and 57 million globally.

These figures will only increase in the coming years, as rates of dementia are predicted to double by 2060. If you don’t know someone affected by dementia, you probably will at some point.

Dementia is incredibly difficult both for the person experiencing it and for their loved ones, not only because of the symptoms of the disease but also because of the social stigma associated with cognitive decline. Experiencing stigma makes it difficult for people with dementia to ask for help, increases anxiety and depression, and ultimately leads to social isolation.

Dementia-related stigma is perpetuated through media messages that portray people with dementia as mindless and incapable, as well as through daily interactions in which others dismiss and dehumanize the person living with dementia.

These forms of invalidation – usually unintentional – accelerate and intensify the loss of self-worth and identity that dementia patients are already experiencing.

Fortunately, educating and spreading awareness can help reduce behaviors that propagate stigma and dehumanizing treatment of people with dementia.

As a social scientist and researcher in interpersonal communication and family caregiving, I explore the social and relational side of dementia. Through my work with these patients and families, I’ve learned that reducing stigma and supporting self-worth for people who have dementia is often done through daily conversations.

Back shot of two seniors sitting on edge of bed in front of window, speaking to one another.
People living with dementia can continue to have fulfilling interactions when caregivers carry out person-centered care.
Jessie Casson/DigitalVision via Getty Images

How is dementia defined?

Dementia is an umbrella term that refers to a family of cognitive conditions involving memory loss, difficulty thinking or processing information, changes in ability to communicate and challenges with managing daily tasks.

The most common form of dementia is Alzheimer’s disease, but there are several other forms of dementia that can severely affect a person’s quality of life and that of their loved ones.

Most forms of dementia are progressive, meaning that the symptoms of the disease get steadily worse over time. A person with dementia can live with the disease for several years, and their symptoms will shift as the disease progresses.

People in the early stages of dementia, including mild cognitive impairment, continue to engage socially and participate in many of the activities they have always done. In the middle stage of the disease, people often need more help from others to complete daily tasks and may have more difficulty holding conversations. In the late stage, people with dementia are dependent on others and often lose the ability to communicate verbally.

Despite the cognitive declines that come with dementia, people living with dementia can maintain many of their former abilities as the disease progresses. Even in the late stages, research shows that people with dementia can understand tone of voice and nonverbal communication such as body language, facial expressions and gentle touch.

This makes it clear that people with dementia can continue having meaningful social connections and a sense of self-worth even as their disease progresses.

Senior man with dementia sitting at table with smiling young girl and colored pencils.
Engaging in meaningful activities that are appropriate to the person’s stage of dementia can help foster a sense of self.
Jessie Casson/DigitalVision

Focusing care around the person

In the 1990s, psychologist Tom Kitwood, who studied dementia patients in long-term care settings, introduced the notion of “personhood.” Personhood is a recognition of a person’s unique experiences and individual worth. He had observed that residents with dementia were sometimes treated as objects rather than people and were dismissed as being “no longer there” mentally. In response, Kitwood advocated for a new model of person-centered care.

In contrast to the medical model of care that was standard at the time, person-centered care aims to provide people with dementia comfort, attachment, inclusion, occupation and identity.

Comfort includes both physical and psychological comfort, ensuring that the person with dementia feels safe and is as pain-free as possible. Attachment and inclusion have to do with supporting a person with dementia’s closest relationships and making sure they feel included in social activities.

Occupation is about giving the person meaningful activities that are suited to their abilities, while identity is about preserving their unique sense of self. According to Kitwood, each of these elements of personhood can be upheld or threatened through a person’s interactions with others.

I find Kitwood’s work particularly important because it suggests that communication is at the heart of personhood.

Communicating to support personhood

So how can family members and friends communicate with their loved one with dementia to help preserve their sense of self?

Researchers have identified several evidence-based communication strategies that support person-centered care both in long-term care settings and within the family.

These include:

Communication shifts as the disease progresses

Supporting personhood requires adjusting to the communication abilities of the person with dementia. Some communication strategies are helpful in one stage of the disease but not in others.

In a recent study, my team and I found that asking the person with dementia to recall the past was affirming for those who were early in the disease and who could still recall the past. But for people who were in later stages of the disease, asking them “Do you remember?” was received more like a test of memory and led to frustration or confusion. Similarly, we found that suggesting words to prompt recall was helpful later in the disease but demeaning for people who were in earlier stages of the disease who could still find their words without help.

Providing more help in conversation than is needed can lead people with dementia to withdraw, whereas appropriately adjusting to a person’s communication abilities can empower them to continue to engage socially.

Ultimately, supporting a person with dementia’s sense of self and self-worth in conversations is about finding a communication sweet spot – in other words, matching your approach to their current capabilities.

Changing your default approach to conversations can be challenging, but making simple communication changes can make all the difference. Meaningful conversations are the key to helping your loved one live their days to the fullest, with a sense of personal worth and a feeling of meaningful connection with others.

The Conversation

R. Amanda Cooper is affiliated with the Alzheimer’s Association as a Community Educator.

ref. How to keep dementia from robbing your loved ones of their sense of personhood – tips for caregivers – https://theconversation.com/how-to-keep-dementia-from-robbing-your-loved-ones-of-their-sense-of-personhood-tips-for-caregivers-265477

Why does your doctor seem so rushed and dismissive? That bedside manner may be the result of the health care system

Source: The Conversation – USA (3) – By Marisha Burden, Professor of Medicine–Hospital Medicine, University of Colorado Anschutz Medical Campus

It may seem personal, but usually a doctor’s negative attitude isn’t about you. ajr_images/iStock via Getty Images Plus

We’ve all been there: You wait 45 minutes in the exam room when the doctor finally walks in.

They seem rushed. A few questions, a quick exam, a glance at the clock and then a rapid-fire plan with little time for discussion – and you leave feeling unheard, hurried and frustrated.

And what if you’re hospitalized? You may face a similar experience.

More than half of U.S. adults say their doctors have ignored or dismissed their concerns, or not taken their symptoms seriously, according to a December 2022 national poll.

It’s easy to blame the doctor. But the reality is, most doctors would like to sit down and have an in-depth conversation with patients and their families. Instead, your unpleasant visit may be the result of productivity pressures and administrative burdens, often shaped by health care systems, payment models and policy decisions that influence how care is delivered.

Patients are increasingly experiencing what’s known as administrative harm – those unintended but very real consequences arising from administrative decisions, made far upstream, that directly influence how doctors practice. Ultimately, these types of interactions affect the care patients receive and their outcomes.

As a doctor and researcher who specializes in business and health care delivery, I’ve studied how organizational decisions have ripple effects, shaping patients’ relationships with their doctor and the quality of care they receive. Patients may be unaware of these upstream administrative decisions, but they affect everything from time allotted for an appointment to the number of patients the doctor has to see and whether a visit is covered by insurance.

As a father comforts his young son with a kiss, a young female pediatrician smiles as she speaks to her young patient within a hospital setting.
Quality interactions of doctors and patients, like this one, are at risk of becoming too few and far between.
ljubaphoto/E+ via Getty Images

A look behind the scenes

Increasingly, health care organizations and physician groups face intense financial pressures. Many doctors can no longer sustain their private practice due to declining reimbursements, rising costs and increasing administrative burdens; instead, they’ve become employees of larger health care systems. In some cases, their practices have been acquired by private equity groups.

With this shift, doctors have less control over their workloads and the time they get with their patients. More and more, payment models fail to cover the true cost of care. The default solution is often for doctors to see more patients with less time for each, and to squeeze in additional work after hours.

But that approach comes with costs, among them the time needed to build meaningful connections with patients. That negative, impolite tone you may have experienced might be because the doctor has many patients waiting and a full evening ahead just to catch up on writing visit notes, reviewing medical records and completing other required documentation. During the work day, they’re often fielding over 100 messages and alerts daily, including referrals and coordinating care, all while trying to focus on the patient in front of them.

But the consequences go beyond their bedside manner. Research makes clear that doctors’ performance and the quality of care patients receive are affected by their workload. A similar pattern is true with nurses: Their higher workloads are associated with higher death rates among hospitalized patients.

Suppose you’re hospitalized for pneumonia, but because your doctor is caring for too many patients, your hospital stay is longer, which increases your risks of infection, muscle loss and other adverse outcomes. In the doctor’s office, a rushed visit can mean delayed or missed diagnoses and even prescription errors.

About half of U.S. doctors report feelings of burnout, and about one-third are considering leaving their current job, with 60% of those likely to leave clinical practice entirely.

Long work hours also brings higher risks of heart disease, stroke and other health problems for health care professionals. In the U.S., 40% of doctors work 55 hours per week or more, compared with less than 10% of workers in other fields.

Female doctor reading a medical chart on a digital tablet in a hospital hallway.
A doctor’s rushed demeanor can sometimes stem from a heavy administrative load of reviewing notes and medical records.
andresr/E+ via Getty Images

A better way

The administrative harms stemming from upstream decisions are not inevitable. In large part, they are preventable. Overhauling the health care system may seem daunting, but patients and doctors are not powerless.

Patients and their families must advocate for themselves. Ask questions and be direct. This phrase: “I am still really worried about … ” will quickly get your doctor’s attention. If your visit seems rushed, share it with patient representatives or through patient surveys. These insights help administrative leaders recognize when systems are falling short.

Doctors and care teams should not normalize unsustainable work conditions. Health systems need structured, transparent mechanisms that make it easy and safe for doctors and care team members to report when workloads, staffing or administrative decisions may be harming patients.

Even more powerful is when patients and their doctors speak up together. Collective voices can drive meaningful change – such as lobbying for adequate time, staffing or policies to support high-quality, patient-centered care. It is also important for administrative leaders and policymakers to take responsibility for how decisions affect both patients and the care team.

More research is needed to define what safe, realistic work standards look like and how care teams should be structured. For example, when does it make sense for a doctor to provide care, or a physician assistant or nurse practitioner? At the same time, health systems have the opportunity to think creatively about new care models that address clinician shortages.

But research shows that the medical profession can’t afford to wait for perfect data to act on what’s already clear. Overworked and understaffed teams hurt both patients and their doctors.

Yet when doctors do have enough time, the interactions feel different – warmer, more patient and more attentive. And as research shows, patient outcomes improve as well.

The Conversation

Dr. Marisha Burden reports funding from the Agency for Healthcare Research and Quality, the National Institute for Occupational Health and Safety, University of Colorado Innovations digiSPARK award, Med-IQ and the American Medical Association not related to this work. Dr. Burden contributed to the development of GrittyWork, a digital workforce application, and a registered trademark of the University of Colorado not related to this work. The author utilized the ChatGPT language model developed by OpenAI and Microsoft Co-pilot for editing of original author content to improve readability.

ref. Why does your doctor seem so rushed and dismissive? That bedside manner may be the result of the health care system – https://theconversation.com/why-does-your-doctor-seem-so-rushed-and-dismissive-that-bedside-manner-may-be-the-result-of-the-health-care-system-261335

Supreme Court soon to hear a religious freedom case that’s united both sides of the church-state divide

Source: The Conversation – USA (3) – By Charles J. Russo, Joseph Panzer Chair in Education and Research Professor of Law, University of Dayton

Oral arguments in Landor v. Louisiana are scheduled for Nov. 10, 2025. Susan Walsh/AP

In recent years, litigation on certain types of religious freedom lawsuits have been practically run of the mill: prayer on school premises, for example, and government funding for students at faith-based schools.

A case scheduled for U.S. Supreme Court oral arguments on Nov. 10, 2025, however, is very different from most other high-profile cases at the moment. Landor v. Louisiana Department of Corrections involves whether an inmate of a minority religious group, the Rastafarians, can sue for monetary damages after the warden violated his religious rights – specifically, the right to not cut his hair.

Landor v. Louisiana stands out because it underscores the complexity and far-reaching nature of religious freedom laws in the United States and the increasingly diverse faith traditions to which they apply. Christians now represent 62% of the American population, while 29% have no religious affiliation and 7% belong to other faith traditions.

Religious vow

Damon Landor, the petitioner, wore long dreadlocks for almost 20 years as an expression of his beliefs as a Rastafarian – part of a biblical practice known as the “Nazarite vow.” Many members of the movement, which first developed in Jamaica in the 1930s, do not cut their hair.

A man in a plaid shirt, whose long hair is tucked into a green and orange knit cap, walks along the street.
As a sign of faith, many Rastafarians do not cut their hair.
Mattstone911/Wikimedia Commons, CC BY-SA

Landor was incarcerated in 2020 after being convicted for possessing methamphetamine, cocaine, amphetamine and marijuana. At first, officials respected his religious practice. Just three years before, in a case about another inmate in Louisiana, a federal appeals court had affirmed that Rastafarians must be allowed to keep their dreadlocks under the federal Religious Land Use and Institutionalized Persons Act.

Toward the end of his sentence, Landor was transferred to a different correctional facility. There – with three weeks left for Landor to serve – the warden ignored the judicial order, directing guards to shackle Landor and forcibly shave his head.

Not surprisingly, on finishing his sentence, Landor filed suit for money damages under the Religious Land Use and Institutionalized Persons Act. The act forbids the government and its officials from imposing “substantial burden(s)” on incarcerated people’s religious free exercise rights.

Key question

In 2022, a federal trial court in Louisiana condemned Landor’s treatment but rejected his claim, concluding that money damages were not an appropriate remedy. The following year, the 5th U.S. Circuit Court of Appeals unanimously affirmed that decision, denying Landor’s claim.

His legal team then filed a petition for the case to be reheard “en banc.” In this uncommon procedure, parties seek further review from all of the judges in a circuit, or federal appellate court. The court denied his request, but 15 of the 17 active judges wrote that this was a question for the Supreme Court.

The Supreme Court agreed to hear an appeal after more than 20 organizations submitted amicus curiae, or “friend of the court,” briefs in favor of Landor. The Trump administration also filed an amicus brief encouraging the Supreme Court to take the case.

The briefs include groups that often have diverging opinions. Americans United for Separation of Church and State, for example, typically supports those wishing to keep religion out of public life. Conversely, the Becket Fund usually defends the rights of those seeking to increase faith’s role in public life.

They are of one mind in Landor because the case involves his right to express his beliefs freely by how he lives, in a very personal way: grooming and hair length.

Lower courts agree that Landor’s religious rights were violated. The key question is whether he can sue an individual official – here, the warden – for monetary damages.

Several rows of seated men and women, many of whom are wearing long black robes.
U.S. Supreme Court justices attend inauguration ceremonies in the rotunda of the U.S. Capitol on Jan. 20, 2025.
Chip Somodevilla/Getty Images

Sister statutes

Weighing heavily in Landor’s favor is a previous Supreme Court order in Tanzin v. Tanvir. That 2020 case was brought by two Muslim men who sued FBI agents after their names were put on a “no-fly list.” The plaintiffs alleged that their names were added to the list in retaliation for refusing to spy on fellow Muslims.

The Supreme Court unanimously affirmed that the men could sue the agents as individuals, not just in their official capacity. Being sued as an individual means defendants must pay damages on their own, without the government helping to foot the bill – a potentially very expensive outcome.

There’s a key difference here in Landor’s case, though. In Tanzin, the plaintiffs sued for violations of their rights under the Religious Freedom Restoration Act, a federal law enacted in 1993. Landor brought his case under the Religious Land Use and Institutionalized Persons Act, enacted in 2000. The laws are similar; in fact, the key language in both statutes is identical. But the Religious Land Use Act has not yet been interpreted as providing money damages against government officials.

The earlier statute, the Religious Freedom Restoration Act, became law in response to a pivotal Supreme Court case about religious freedom: Employment Division Department of Human Resources of Oregon v. Smith. The justices upheld the dismissal of two drug counselors under state law for ingesting peyote, a natural hallucinogenic substance, during a Native American Church ceremony – even though most states and the federal government had decriminalized peyote’s use for religious purposes.

The act was essentially a rebuttal of 1990’s Smith ruling. It requires laws that restrict religious freedom to pass strict scrutiny, the highest form of constitutional analysis. If the government seeks to limit someone’s religious exercise, laws must be based on a “compelling governmental interest” and carried out by the “least restrictive means” possible. Under that standard, laws usually cannot withstand judicial review. In 1997, the Supreme Court narrowed the act’s reach in City of Boerne v. Flores, restricting its application to the federal government rather than states.

The Religious Land Use and Institutionalized Persons Act, which Congress adopted by unanimous consent in 2000, is often referred to as a sister statute because of its similarities. Notably for Landor, it forbids governments, or their agents, from imposing unnecessary “substantial burden[s]” on the “religious exercise” rights of those who are incarcerated. The act also protects religious land uses from discrimination through zoning restrictions.

Bigger picture

At first glance, Landor appears to be little more than a procedural disagreement over whether parties can recover damages under two similar statutes protecting religious freedom. However, at a time when there are nearly 2 million people in prisons, jails and detention and correctional facilities, the inability to seek damages under the Religious Land Use and Institutionalized Persons Act limits accountability for violations of their rights to religious freedom.

What’s more, Landor’s case illustrates that minority religions have as much protection under the First Amendment as larger faiths. How the Supreme Court resolves it will say a great deal about the future of religious freedom on issues that the authors of the Constitution could not have anticipated.

The Conversation

Charles J. Russo 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. Supreme Court soon to hear a religious freedom case that’s united both sides of the church-state divide – https://theconversation.com/supreme-court-soon-to-hear-a-religious-freedom-case-thats-united-both-sides-of-the-church-state-divide-268817

Making RE part of the national curriculum will promote tolerance – but only if it’s taught in the right way

Source: The Conversation – UK – By Daniel Moulin, Associate Professor in Philosophy and World Religions, University of Cambridge

Rawpixel.com/Shutterstock

An independent review of the national curriculum in England, commissioned by the government, has published its final report. One of the key recommendations is to work towards the addition of religious education (RE) to the curriculum. This would mean RE would have the same status as other humanities subjects for the first time.

The review recommends the creation of a “task and finish group” to devise a religious education curriculum. This would then potentially become part of the national curriculum.

In England, religious education is currently a “basic curriculum subject”. This means it is technically mandatory but not part of the national curriculum. This status has long been considered a source of problems. With no centrally determined curriculum, the quality of RE teaching is patchy. Many schools do not comply with the law in how they offer it.

But overall, the current “multi-faith” approach to RE teaching, enshrined in law in the 1988 Education Act, allows pupils to confront the big questions of life. They can develop an understanding of the diverse beliefs and practices of many different communities represented in Britain.

I am an academic expert who leads the training of teachers in how to deliver religious education. I believe any national curriculum content should embrace as fully as possible the principle of teaching religious education pluralistically. This means not adopting anyone’s or any particular understanding of religion as the only approach to learning, or the only approach to determining the curriculum.

Freedom of belief is one of the foundational principles of democracy. It is precisely because, and for, this principle that pluralistic religious education is essential.

Religious education in England

When state-administered education systems were first universalised in the 19th century, western nations either supported the religious education offered by the prevailing church of a given jurisdiction. There were some exceptions. France and the US, for instance, instigated a secular system with no official religion. To no small degree, though, these systems have been arguably culturally Christian.

The result is a map of religious education that strikingly resembles a map of the Christian reformation. For example, in Germany, students choose between secular ethics, Catholic, or Protestant instruction, or recently in some states, Islamic education.

The teacher is of that designated faith, trained and authorised by that religious authority. In predominantly Catholic countries, such as Poland, the Catholic church has a major stake in determining religious education in the state system.

In England, religious education has evolved differently. The state funds schools of a designated religion which can teach religious education to their own creeds. But most state-funded schools must teach about all the major religions represented in Great Britain.

There is very little data available on the impact of this form of religious education on individuals and society. But it is symbolic at least of a liberal, cosmopolitan and inclusive society that promotes tolerance.

Group of diverse school pupils
A multi-faith approach to RE lets students confront big questions.
Rawpixel.com/Shutterstock

The educational and social issues arising from teaching religious education in a religiously diverse and secular context have engaged English religious educators for the past 50 years. In response, they have advanced a fascinating array of ideas and methods of teaching about religions. These have drawn inspiration from postmodern philosophy, anthropology and sociology.

The latest iteration of these approaches is the “religion and worldviews” approach, advanced by many religious educators. It is based on the assumption that regardless of whether somebody practices or identifies with a religion, they still live life based on a personal construction of the world. The idea is that this can be studied just like any formalised religious or philosophical system.

On the face of it, the study of worldviews suggests a way to teach religious education pluralistically. It assumes everyone has their own worldview, which is potentially different from another’s. However, many people believe there is just one reality and the foundations of morality are more or less obvious.

This is particularly true of most religious believers. They may not see their religion as a human construct, but rather a source of God’s revelation to humankind. It is also true of many non-religious people who believe in science as the objective foundation of human knowledge.

Teaching religious education pluralistically is more radical and exciting than setting one or other parameters on each other’s beliefs in order to approach them educationally. It has to be open to completely opposing accounts of reality and the possibility of our knowledge of it. This allows for something of much value in education – the development of minds that can hold and weigh up contradictory accounts at once.

However, it can only be achieved by a curriculum that assumes no overarching narrative itself. Instead, it must fairly represent and interrogate the deep differences that actually characterise religious diversity in the real world.

The Conversation

Daniel Moulin 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. Making RE part of the national curriculum will promote tolerance – but only if it’s taught in the right way – https://theconversation.com/making-re-part-of-the-national-curriculum-will-promote-tolerance-but-only-if-its-taught-in-the-right-way-266964

Could pain medication be causing your headaches?

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

Krakenimages.com/Shutterstock.com

It seems contradictory: the pills you’re taking for headaches might actually be perpetuating them. Medication-overuse headache is a well-documented medical phenomenon, but the good news is it’s often reversible once identified.

Over 10 million people in the UK regularly get headaches, making up about one in every 25 visits to a GP. Most headaches are harmless and not a sign of a serious problem. Although many people worry they might have a brain tumour, less than 1% of those with headaches actually do.




Read more:
What Davina McCall’s colloid cyst removal can tell us about brain tumours


Because there are so many possible causes of headaches, GPs must play detective. A detailed medical history and examination are essential, sometimes followed by specialist referral.

The challenge lies in determining whether a headache signals a serious underlying cause, or is benign. Even benign headaches, however, can greatly affect a person’s daily life and still need proper care.

Treatment depends on the type of headache. For example, migraines may be treated with anti-sickness medicine or beta blockers, while headaches related to anxiety or depression might improve with mental health support. Lifestyle changes, such as dietary changes and exercise, can also help manage many types of long-term headache.

However, doctors often see another type of persistent headache that has a clear pattern. Patients report getting repeated headaches that started or got worse after taking painkillers regularly for three months or longer.

This can happen in people with migraines, tension headache, or other painful conditions like back or joint pain. Some may take several types of medication, often more and more frequently, and end up stuck in a frustrating cycle that doesn’t seem to make sense at first.

The probable diagnosis is medication-overuse headaches. This condition is thought to affect about 1–2% of people and is three-to-four times more common in women.

The culprit is often the painkillers themselves. Opiates like codeine, used to treat moderate pain from injuries or after surgery, come with a long list of side-effects including constipation, drowsiness, nausea, hallucinations – and headaches.

It’s not just strong opiate-based medications that can cause headaches. Common painkillers like paracetamol and NSAIDs (non-steroidal anti-inflammatories, such as ibuprofen) can also play a role. Some medications even combine paracetamol with an opiate, such as co-codamol.

Paracetamol has a simpler side-effect profile compared with drugs like codeine. When taken within the recommended daily limits – which depend on age and weight – it is generally a safe and effective painkiller. This has contributed to its widespread use and easy availability.

However, taking more than the recommended dose or using it too often can be very dangerous. This can lead to serious – sometimes fatal – complications, such as liver failure.

Even though side-effects are less common, studies have shown that regular use of paracetamol alone can also trigger chronic headaches in some people.

Other drugs besides painkillers can also cause problems. Using triptans too often – medications to stop migraine attacks – can also lead to medication-overuse headaches.

The term “overuse” might make it sound like patients are taking more than the recommended daily dose, which can happen and brings its own serious risks. However, in many cases of medication-overuse headaches, patients are neither exceeding dose limits nor taking the medication every single day.

For paracetamol or NSAIDs, medication-overuse headaches may develop if they are taken on 15 or more days per month. With opiates, headaches can appear with even less frequent use – sometimes after just ten days a month.

A pack of co-codamol.
The very drugs used to treat your headaches could be making them worse.
Eddie Jordan Photos/Shutterstock.com

That’s why it’s important to talk to a doctor if you need to use any painkiller, even over-the-counter ones, for a long time. Not everyone will develop medication-overuse headaches, and the risk seems to differ from person to person, meaning individual susceptibility plays a big role.

Treatment

Treating these headaches can be challenging. It’s often hard for patients to recognise on their own that their medication is causing the problem. The usual approach involves gradually stopping the medication under guidance, eventually stopping it completely.

This can seem unfathomable to patients, especially since they expect painkillers like paracetamol to relieve their headaches. Some worry their pain will get worse as they cut back. That’s why working closely with a doctor is essential – to confirm the diagnosis, monitor progress and plan the next steps in treatment.

If you’re having headaches on more than 15 days a month, it’s important to see your GP. Talking it through can help identify underlying causes and explain these often debilitating symptom patterns. Keeping a headache diary – noting symptoms and daily details – can also support the diagnosis.

Why some medicines, especially painkillers, can make headaches worse isn’t fully understood. However, it’s important to be aware of this now well-established link and seek medical advice.

Only when some patients stop taking certain medications altogether do they discover the uncomfortable truth: that their pain was being fuelled by the very drugs they depended on.

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. Could pain medication be causing your headaches? – https://theconversation.com/could-pain-medication-be-causing-your-headaches-266912

As the Paris climate agreement turns ten, it’s showing its age

Source: The Conversation – UK – By Lisa Vanhala, Professor of Political Science, UCL

Ten years after the world agreed on an historic framework for climate action, the very features that made the Paris agreement possible are now holding it back. Designed to foster cooperation, it has instead become a system for forging agreement rather than delivering change.

As world leaders head to Belém, Brazil, for “Cop30” – the 30th session of the international climate negotiations – here’s how the system broke, and how we can begin to fix it.

Back in 2015, the Paris agreement was not a foregone conclusion. Climate change isn’t one problem but many overlapping thorny issues, from the enormity of the challenge of trying to stop global warming to the huge disparities in states’ capacities to respond and the escalating intensity of catastrophic floods, wildfires and rising seas.

The Paris agreement was designed to achieve cooperation – which it admirably did. Through the UN, it brought all 195 countries together to establish a global policy framework, a triumph of multilateralism in a period where international cooperation was fraying on most other issues.

But reaching cooperation is supposed to be the beginning, not the end, of global climate governance.

Better than nothing – but not enough

Supporters rightly argue that the world is on a better path than it would be without the treaty. Before 2015, the world was on track for a catastrophic 4°C to 5°C of warming. Now, thanks to national pledges, we are on course for around 2.5°C to 3°C. That’s still unsafe but better than where we would have been without the agreement.

For the first time in history, renewables generate more electricity than coal. A new “loss and damage” fund will soon start helping vulnerable countries cope with climate change.

What is ‘loss and damage’? A climate scientist explains.

Yet, progress is slowing down and has even stagnated according to some measures. Global warming projections for 2100 are flatlining, with little improvement over the past few years. Emissions continue to increase. Carbon dioxide in the atmosphere reached the highest level ever recorded last year. The fact that no UN climate summit agreement mentioned the idea of transitioning away from fossil fuels until 2023 suggests that movement on this front is likely to be very slow at best.

The seeds of its undoing

So what’s not working? One core feature of Paris is its flexible, bottom-up approach, where countries get to decide on their own targets and timelines. In theory, this allows for a diversity of approaches. In practice, it has allowed some countries to do the bare minimum or even try to obstruct the process.

The Paris agreement also hasn’t meaningfully changed some of the core practices that drive warming, including the financing, producing and consumption of fossil fuels. When it comes to fossil fuels, ironically, building in this level of flexibility into the agreement has resulted in a trenchant inflexibility among some countries to phase down.

line of nodding donkey oil pumps
Some countries don’t really want to cut their fossil fuels – and Paris can’t make them.
Nattawit Khomsanit / shutterstock

Another problem with Paris system is the continued dominance of sovereign states and the exclusion of other key players such as businesses and citizen groups. The voices of those communities, for example Indigenous peoples, most impacted by climate change are often left out of the conversation. The biggest oil companies are responsible for far more greenhouse gases than most countries yet have no binding emissions limits under the Paris agreement.

Responding to climate change requires buy in from across all of society. Yet, recent climate summits have seen disproportionate representation of fossil fuel interests and negotiation leadership from countries who do not support the transition away from fossil energy. At the same time, most of the affected communities and innovators who are driving solutions and developing new technologies are left standing outside the negotiating rooms. Unless leaders take the interests of a wide array of groups seriously, the agreements they reach won’t be implemented.

The illusion of progress

The current system also falls short in terms of embedding the changes that are agreed at the annual summits. The case of the new loss and damage fund is illustrative. Despite celebratory headlines, progress has been slow. Delays are rife. Rich states overload under-resourced international bureaucrats, and attempt to outsource their responsibilities. Even the US$250 million (£192m) it is set to disburse is a drop in the ocean compared to the US$200 to US$400 billion a year that developing countries may need by 2030 to cope with storms, droughts, extreme heat and rising seas.

As I document in my recent book, Governing the End: The Making of Climate Change Loss and Damage, these big announcements often unravel in implementation. All of this activity and pledge-making gives the illusion of progress with relatively little meaningful action down the line.

Empowering implementors and innovators

There is now widespread recognition that climate multilateralism is falling short. Brazil’s President Lula has proposed creating a UN climate change council to speed up implementation. He wants this body to enhance accountability and coordination and to be linked to the UN General Assembly.

Others want “climate clubs” – smaller coalitions of like-minded governments, businesses and people focused on specific climate policy objectives like food security or protecting children from the consequences of climate change.

The huge growth in climate change litigation is in some ways the most promising avenue for holding governments to account. For example, a recent International Court of Justice advisory opinion on climate change has played an important role in clarifying 1.5°C as the “primary temperature goal” of the Paris agreement and was clear that national governments have a legal duty to actively prevent further climate breakdown.

But litigation is slow and expensive. Relying on courts to enforce existing commitments is a second-best solution in many cases. An improved system of accountability to ensure that national action plans align with the latest scientific evidence is needed.

With Cop30 approaching, one lesson is clear: cooperation was only the beginning. What the world needs now is concrete action and accountability rather than more delay and diversion. Without that, the Paris system risks becoming a symbol of good intentions rather than a driver of real change.


Don’t have time to read about climate change as much as you’d like?

Get a weekly roundup in your inbox instead. Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 45,000+ readers who’ve subscribed so far.


The Conversation

Lisa Vanhala has received funding from the European Research Council and she has consulted for the United Nations Environment Program Copenhagen Climate Center, 3IE and the Adaptation Fund Technical Expert Reference Group.

ref. As the Paris climate agreement turns ten, it’s showing its age – https://theconversation.com/as-the-paris-climate-agreement-turns-ten-its-showing-its-age-268147

Agriculture in Brazil: how land-use choices affect biodiversity and the global climate

Source: The Conversation – France – By Thomas M. R. Gérard, PhD candidate, Copernicus Institute of Sustainable Development, Utrecht University

Over the past 50 years, Brazil has emerged as one of the world’s agricultural giants. Becoming a leading global exporter of soybeans, beef, coffee and sugar has significantly boosted its economy and placed the country at the centre of the global food system. This agricultural development, however, has come at a cost.

The expansion of agriculture has driven the widespread conversion of natural vegetation into pastures, croplands, and forest plantations. Much of this expansion has occurred in areas that are critical for biodiversity conservation and terrestrial carbon storage. In the past 40 years alone, agricultural land has expanded by approximately 109 million hectares, an area nearly twice the size of metropolitan France. Brazil includes some of the world’s most important biodiversity hotspots. At the same time, its ecosystems are critical carbon sinks, storing vast amounts of carbon that are essential for mitigating climate change. The continuing pressure from agricultural expansion underscores the urgent need to reconcile production with biodiversity conservation and carbon sequestration.

Our new study explores how future changes in land use in Brazil could affect biodiversity, the global climate, and the agricultural economy by 2050. We consider two Shared Socioeconomic Pathways (SSPs), each outlining a distinct potential future for the world and Brazil. Among these, SSP3 depicts a scenario characterised by regional rivalry, heavy reliance on fossil fuels, strong nationalism, and significant challenges to both climate mitigation and adaptation. Under this scenario, agricultural land in Brazil is expected to expand further due to rising food demand and only modest improvements in crop yields. In contrast, SSP1 represents a sustainable future, emphasising proactive climate mitigation and adaptation, clean energy adoption, and the protection of natural ecosystems. Under SSP1, agricultural land in Brazil is projected to contract, thanks to reduced food demand and substantial yield improvements.

Where agriculture expands matters

Under the SSP3 scenario, around 52 million hectares of natural land are converted for agricultural use to meet rising food demand, affecting all of Brazil’s biomes, regions that encompass large ecosystems with similar climatic or ecological conditions and a specific type of vegetation. This expansion drives a projected 28% increase in agricultural revenue between 2025 and 2050, but it comes with significant environmental trade-offs. The loss of natural vegetation is expected to release a total of 12 gigatonnes of CO2 over this period. On average, this would result in 0.5 gigatonnes per year, which is higher than Brazil’s annual emission rate from land use during the 2010s. Biodiversity would also be affected, with about 70% of the mammal species we studied, including the maned wolf and howler monkey, losing habitat over the same period.

Our results show that the environmental impacts depend not only on the extent of agricultural expansion, but also on where it takes place. Deforestation should be avoided in the Amazon and Atlantic Forest, as both biomes are rich in carbon and biodiversity, and clearing them has a major impact on both. In these biomes, whether deforestation occurs at forest edge or deep within the interior, it releases substantial amounts of CO2. For biodiversity, however, location is decisive: deforestation within highly biodiverse areas (including Indigenous Lands and Conservation Units, officially designated areas in Brazil that receive legal protection) disproportionately threatens species with restricted habitats. For instance, Saguinus bicolor, a primate species with one of the smallest habitats in the Amazon, is projected to lose more than 7% of its remaining range, further constricting an area that is already limited.

Restoration of ecosystems with low economic loss

Under the SSP1 scenario, declining food demand is projected to lead to the abandonment of agricultural land, freeing vast areas for restoration to their natural state. Between 2025 and 2050, revenue from agriculture is projected to fall by 31%, but this comes with positive environmental trade-offs. More than 12.4 gigatonnes of additional CO2 – roughly five years’ worth of EU emissions from fossil fuels and industry – are expected to be sequestered, a major contribution to climate change mitigation. In addition, the habitats of two thirds of the mammal species we studied are projected to expand.

Interestingly, these results indicate that restoring land around remaining biodiversity- and carbon-rich areas could deliver substantial environmental benefits with relatively modest agro-economic losses. In these areas, restoration would result in an agricultural revenue loss of only $5 to $10 per tonne of carbon gained. By comparison, the European Union Emissions Trading System currently prices carbon at around $70 per tonne, suggesting that strategic reforestation in Brazil could be a highly cost-effective climate change mitigation strategy. This is particularly relevant, as Brazil has recently launched its own Greenhouse Gas Emissions Trading System (SBCE). In addition to increasing carbon sequestration, reforesting these areas would generate substantial co-benefits for biodiversity, creating a synergistic opportunity to advance both.

Lesson learned for a more sustainable future

Reconciling agriculture with biodiversity and climate is critical in Brazil’s sustainable transition. Future global developments in food demand and agricultural yields will determine how much land the country dedicates to agriculture, and, by extension, how much pressure is on its ecosystems. The more land required for production, the greater the impacts on biodiversity and carbon storage.

If expansion is unavoidable, several strategies can help reduce the environmental consequences. Agricultural expansion should be carefully planned, avoiding carbon- and biodiversity-rich areas, and should not include deforestation deep within forests. At the same time, restoration efforts focused on biodiversity- and carbon-rich areas can deliver substantial environmental benefits at a relatively low economic cost.

Brazil’s path toward sustainable land use ultimately depends on two essential questions: how much land is required, and which land should be used.


A weekly e-mail in English featuring expertise from scholars and researchers. It provides an introduction to the diversity of research coming out of the continent and considers some of the key issues facing European countries. Get the newsletter!


Created in 2007 to help accelerate and share scientific knowledge on key societal issues, the Axa Research Fund – now part of the Axa Foundation for Human Progress – has supported over 750 projects around the world on key environment, health & socioeconomic risks. To learn more, visit the website of the AXA Research Fund or follow @ AXAResearchFund on LinkedIn.

The Conversation

Les auteurs ne travaillent pas, ne conseillent pas, ne possèdent pas de parts, ne reçoivent pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’ont déclaré aucune autre affiliation que leur organisme de recherche.

ref. Agriculture in Brazil: how land-use choices affect biodiversity and the global climate – https://theconversation.com/agriculture-in-brazil-how-land-use-choices-affect-biodiversity-and-the-global-climate-268823