The late, great comedian Barry Humphries (of Dame Edna fame) once spoke whimsically about the health benefits of kale. Just one fistful, he joked, contained enough essential vitamins, minerals and trace elements to keep you in a sedentary position in the bathroom for two whole days. Apparently, it wasn’t tasty enough to justify a second helping.
In a world where “superfoods” are relentlessly marketed for their supposed ability to deliver all the nutrients we need, it’s worth asking: which vitamins really are essential? And aside from kale (which I actually rather like), what foods help us meet our daily needs?
Vitamin A
Let’s start at the top. Vitamin A – also known as retinol – is found in foods like eggs, oily fish and dairy products. It plays a crucial role in keeping your skin and immune system healthy.
But it’s probably most famous for supporting vision. Vitamin A binds with light-sensitive pigments in the rod and cone cells of your retina, helping you to see, particularly in low light.
A deficiency in vitamin A, though uncommon in wealthy countries, can lead to serious vision problems and even blindness. Another source of vitamin A is beta-carotene, found in colourful fruits and vegetables like carrots, peppers, spinach and pumpkin. Your body converts beta-carotene into vitamin A, which is why we associate carrots with seeing in the dark.
B1 (thiamin) helps the nervous system and aids digestion. People with chronic alcoholism are especially at risk of deficiency, which can lead to Wernicke-Korsakoff syndrome, a serious neurological disorder that affects memory and movement.
B2 (riboflavin) and B3 (niacin) support similar functions, while B9 (folate) and B12 (cobalamin) are essential for red blood cell production. A lack of either can lead to anaemia.
Folate is especially important in early pregnancy, helping to prevent neural tube defects like spina bifida. That’s why it’s recommended for people who are pregnant or trying to conceive.
You’ll find B vitamins in everything from beans and legumes to meat, fish and dairy; a wide-ranging family of nutrients in a wide-ranging variety of foods.
Vitamin C
The go-to vitamin when we’re under the weather, whether from a virus or a hangover, vitamin C (ascorbic acid) is known as the “healing” vitamin for good reason. It promotes wound healing, supports tissue repair and helps maintain blood vessels and bones.
A deficiency in vitamin C causes scurvy – a condition once common among sailors – with symptoms like fatigue, bruising, depression and gum disease.
Fortunately, vitamin C is found in many different fruits and vegetables, especially citrus fruits. That’s why 19th-century British sailors were given limes to prevent scurvy, earning them the nickname “limeys”.
Vitamin D
Vitamin D is essential for bones, teeth and muscles. It can be absorbed through diet, especially from oily fish, eggs and meat, but your body also makes it in the skin, thanks to sunlight.
In the summer, most people get enough vitamin D from being outside. But in the winter months, diet and, if needed, supplementation become more important.
Deficiency is more common, especially in areas with limited sun exposure. It can lead to soft, weakened bones and symptoms like bone pain, fractures and deformities – including the classic bow-legged appearance. In children, this condition is known as rickets; in adults, it’s called osteomalacia.
Vitamin E
Often overlooked, vitamin E helps protect cells, supports vision and bolsters the immune system. You’ll find it in nuts, seeds and plant oils and it’s usually easy to get enough through a varied diet.
Vitamin F (Sort of)
Not actually a vitamin, “vitamin F” is just a nickname for two omega fatty acids: alpha-linolenic acid (ALA) and linoleic acid (LA). These essential fats support brain function, reduce inflammation, and help maintain healthy skin and cell membranes. Since they’re technically not vitamins, we’ll let them quietly bow out.
Vitamin K
No, you didn’t miss vitamins G through J: they were renamed over the years. But vitamin K is real, and crucial for blood clotting.
Deficiencies are more common in children, and can lead to bruising and bleeding that’s hard to stop. Supplements are effective and given after birth.
All these vitamins are important – and all are found in a wide range of everyday foods. But which single food provides the widest variety?
Kale, oily fish and eggs come in strong at second, third and fourth. But number one is: liver.
Yes, liver. The stuff of childhood dread and overcooked school dinners. But it’s also rich in vitamins A, B, D and K. So rich in Vitamin A, in fact, that it’s advised to eat it only once a week to avoid vitamin A toxicity, and not at all if you’re pregnant. Sometimes, you just can’t win.
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.
For children in England with special educational needs and disabilities, an education and health care plan (EHCP) is a central pillar of support. The government is due to set out its educational strategy for children with special educational needs and disabilities in the autumn, though, and has not ruled out scrapping ECHPs. Their removal would signal radical change in how the system works in England.
ECHPs are individualised plans that set out the needs of a particular child and the support they should receive – from education, health services and social care – in order have the best opportunity to thrive. But demand for ECHPs is soaring and providing support is proving financially catastrophic for local authorities.
One of the criticisms of EHCPs is that they prioritise providing children with individual models of support, rather than developing inclusive cultures within schools and within the broader education system. Education secretary Bridget Phillipson has outlined a vision of building a system where more children with special educational needs and disabilities can attend mainstream schools.
But removing ECHPs leads to the possibility of children who need more specialist support missing out.
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To secure an ECHP, local authorities carry out a statutory assessment to determine whether a child’s needs warrant additional support. An assessment does not always lead to an EHCP, but if one is issued, it must outline how the child’s needs will be met and the additional resources needed to do so.
These resources might include funding to provide a child with a teaching assistant, funding for equipment and transport to school, or funding to go to a specialist school. This system of support helps school leaders ensure that children and young people have the right support, at the right time.
According to a report published earlier this year, the demand for EHCPs has risen by 140% since 2015. Recent data shows that there are 482,640 children and young people in England with an EHCP.
Many more children have special educational needs, but do not have an ECHP. These pupils are classed as receiving special educational needs support. The percentage of pupils with an EHCP has increased to 5.3%, from 4.8% in 2024. The percentage of pupils with special educational needs support has increased to 14.2%, from 13.6% in 2024.
Despite government investment of £10.7 billion to local authorities in 2024-25, a House of Commons committee report outlines that long waiting times for assessments, as well as to access support such as speech and language therapy, has led to parents losing confidence in the system.
Funding is allocated to each local authority from central government to fund provision in their areas. It is for local authorities, in consultation with their schools, to determine the individual allocation to schools. However, local authorities are struggling to meet the increased demand for EHCPs. Even when funding is allocated through EHCPs, it is not always sufficient to address the needs of those with complex needs.
And funding is not sufficient to meet demand. Local authorities have accumulated huge deficits due to spending exceeding funding, placing some at risk of going bankrupt.
Future plans
Bridget Phillipson has refused to be drawn on whether EHCPs will be axed. “What I can say very clearly,” she has said, “is that we will strengthen and put in place better support for children.”
Building more inclusive schools is obviously one way of achieving this vision. If scrapping EHCPs means less funding for children for special educational needs and disabilities, though, this cannot be the answer. Children need more support, not less, to enable them to thrive.
The solution is for the government to work out what models of inclusion work well in mainstream schools and to decide how these can be resourced and evaluated. Clarity is also needed on inclusion in mainstream schools can be measured in order to assess whether it is working.
Making more support in mainstream schools work also requires an adequate supply of knowledgeable, well-trained teachers. The government is prioritising this through revision to initial teacher education courses, with an emphasis on all teachers being teachers of special educational needs.
If the government doesn’t get this right, the result may be poorer educational and long-term outcomes for pupils with special educational needs and disabilities. It may also lead to issues with teacher recruitment and retention in mainstream schools, particularly if teachers feel that they do not have the level of support in place that they need to meet the needs of their pupils.
Jonathan Glazzard 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.
Amyotrophic lateral sclerosis (ALS) is a devastating neurological disorder of unknown cause, in which motor nerve cells of the brain and spinal cord that transmit signals to muscles progressively degenerate. This weakens limbs and affects speech, swallowing and ultimately the ability to breathe, resulting in death, typically within just a few years.
Each year in Canada, approximately two people per 100,000 are diagnosed with ALS, amounting to about 1,000 cases based on the current population. In British Columbia, where we are located, the rate is estimated at just over three per 100,000 or roughly 190 new cases per year.
Rigorous ALS research is underway locally, nationally and internationally to slow — and ideally reverse — the relentless progression of this disease. Significant advances in understanding the genetic and environmental drivers of ALS are providing genuine hope that motor neuron diseases will one day be defeated.
As experts in neurology and ethics, we are committed to delivering the best available health care and information throughout B.C. and across Canada. Trust in science and informed hope are essential to achieving the best possible outcomes and the longest possible trajectories in enjoying life when facing the overwhelming odds of ALS.
A disturbing case
In June, CBC’s The National reported on the case of Geoff Sando, a person living with ALS who pursued an unproven intervention for his condition. Sando travelled to Moose Jaw, Sask., to seek treatment at a clinic that claims to provide a cure for ALS.
CBC’s The National reports on a Saskatchewan clinic claiming to offer ALS treatments.
The ALS Society of Saskatchewan and the provincial New Democrat Party allege the clinic attended by Sando and several other patients is a form of medical tourism — travelling elsewhere to seek treatment — that can prey on the most vulnerable in society: those whose quality of life is deteriorating, and whose futures are tragically cut short.
In the United States and Mexico, unfounded stem cell interventions for ALS have been advertised for years. But until recently, it had been unusual to find such offerings in Canada. Their emergence speaks to the need for Health Canada to revisit its guidance on both regulated health and unregulated wellness products, including all forms of treatments, medications and device-based approaches.
We understand the urgency and desire to pursue any thread of hope in the face of desperation, but claims of dramatic improvement or cures from ALS by unregulated clinics that seem too good to be true are likely just that.
Before investing in alternative treatments, we recommend that patients conduct their due diligence by consulting with their health-care team and their provincial ALS society for guidance. Ineffective interventions can jeopardize not only recipients, but also caregivers, especially when financial resources are drained.
Although riluzole and edaravone are only modestly effective, they remain the only widely approved pharmacological options for all forms of ALS. Tofersen is the first gene therapy recently approved to treat hereditary ALS caused by SOD1 gene abnormalities. Other treatments are being evaluated worldwide.
This marks only the beginning of such treatment approaches to not only hereditary ALS but also non-hereditary ALS, which makes up about 90 per cent of all cases.
For those affected by ALS and their families, ample resources are provided by various organizations, including ALS Canada and related provincial organizations, including the ALS Society of BC.
But in this time of geopolitical upheaval, vast incursions of disinformation and reversals of prior evidence-based human and health rights abroad means keeping up this level of trust — trust that leads to hope — will only become more challenging.
The disproportionate suffering and impact on people who are marginalized by serious health conditions will only grow if dubious treatment offerings become normalized in Canada.
Erik P Pioro consults for MT Pharma, which manufactures edaravone (Radicava) and for Biogen, which manufactures tofersen (Qalsody). He has received funding support for ALS research from the ALS Association and the National Institutes of Health.
Judy Illes 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.
The coach, the specialized equipment, the carefully tailored exercise regimen – they’re all key to athletic performance. But imagination might be an unexpected asset when it comes to playing sports.
The idea that athletic achievement depends on the mind isn’t new. Sport psychologists have known for years that working with an athlete on their mental game – visualizing the skill, kinesthetically feeling the swing – has a positive impact on actual performance. But these mental simulations draw only upon mental imagery – seeing and feeling the physical goals in the mind’s eye. Imagination offers a much wider range of possibilities.
What if your game could be helped by an imaginary friend?
In a recent retrospective study of college students, we discovered that imagination comes in handy in athletics in ways that are surprisingly social. The creation of what we termed imaginary athletes – a person or being that a child imagined in the context of athletics – enabled and motivated athletic play, especially for children between the ages of about 6 and 12. Imaginary athletes also provided companionship during athletic play.
The most basic form of an imaginary athlete might be a wall, fence or even tree that makes a good opponent in a pinch. For a child or adolescent practicing a sport alone, a surface that provides a ball return or a steady target for a throw gives opportunities for practice usually requiring other players.
Is it any wonder, then, if the branches of the tree start to resemble a wide receiver’s arms, or an invisible goalie emerges in front of the fence? Solitary play might be a lot more fun if a make-believe teammate could provide an assist, or an invisible coach could appear and shout instructions during practice.
The college students in our study reported that such support, even if imaginary, made them play a little longer or try a little harder as kids.
About 41% of our sample of 225 college students reported creating at least one imaginary athlete at some point in middle childhood or early adolescence. Most, but not all, of these beings fell into three categories based on their characteristics.
The first we called placeholders, such as ghost runners. They are typically generic, amorphous, imaginary teammates created by groups of children when not enough real players are available.
The second type functioned as what we named athletic tools. They helped kids focus on their performance and improve their skills, usually by providing a worthy competitor, sometimes based on an admired professional athlete. The skills of athletic tools were often just above those of the child, drawing out the desire to be better, stronger, faster.
Social relationships, our name for the third kind of imaginary athlete, primarily served emotional functions, relieving loneliness and providing the child or adolescent with a sense of belonging, safety or companionship as they engaged in their sport.
Students who remembered imaginary athletes differed from their peers in two ways. First, more men than women reported creating these imaginary beings, possibly owing to the greater investment in and importance of athletics among boys versus girls. Second, people with imaginary athletes scored higher than those without on a current-day measure of predilection for imagination, but they were not more likely to report having created a make-believe friend or animal as a child.
Imagination is a valuable power
Creating an imaginary other might seem like a quirky, perhaps even childish, addition to sports practice. But actually, this behavior is entirely logical. After all, imagination is the core of human thought. Without it, we couldn’t conceptualize anything outside of the present moment that wasn’t already stored in memory. No thinking about the future, no consideration of multiple outcomes to a decision, no counterfactuals, daydreams, fantasies or plans.
Why wouldn’t people apply such a fundamental tool of day-to-day thought in athletic contexts? Participation in sports is common, especially among school-age kids, and many college students in our study described drawing upon their imaginations frequently when playing sports, especially when doing so in their free time.
The creation of imaginary athletes is also unsurprising because it’s one of myriad ways that imagination enhances people’s social worlds throughout their lives. Above all else, social relationships are what matter most to people, and using imagination in thinking about them is common. For instance, people imagine conversations with others, particularly those close to them, sometimes practicing the delivery of bad news or envisioning the response to a proposal of marriage.
In early childhood, kids create imaginary companions who help them learn about friendship and other’s perspectives. And in adolescence, when people focus on developing their autonomy and their own identities, they create parasocial relationships that let them identify with favorite celebrities, characters and media figures. Even in older age, some widows and widowers imagine continued relationships with their deceased spouses. These “continuing bonds” are efforts to cope with loss through imaginary narratives that are fed by and extrapolate upon years of interactions.
At each point in their developmental trajectory, people might recruit imagination to help them understand, manage, regulate and enjoy the social aspects of life. Imaginary athletes are merely one manifestation of this habit.
Because so many children and adolescents spend a lot of time engaged in sports, athletics can be a major environment for working on the developmental tasks of growing up. As children learn about functioning as part of a group, forming, maintaining and losing friendships, and mastering a range of skills and abilities, imaginary athletes provide teammates, coaches and competitors tailored to the needs of the moment.
Of course, an imaginary athlete is but one tool that children and adolescents might use to address developmental tasks such as mastering skills or negotiating peer relationships. Children who aren’t fantasy-prone might create complex training regimens to practice their skills, and they might manage their friendships by talking through problems with others.
But some report that turning inward generated real athletic and social benefits. “I got confidence out of my [imaginary athletes],” reported one participant. “If I could imagine beating someone, and [winning], then I felt like I could do anything.”
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.
Every few years, the tires on your car wear thin and need to be replaced. But where does that lost tire material go?
The answer, unfortunately, is often waterways, where the tiny microplastic particles from the tires’ synthetic rubber carry several chemicals that can transfer into fish, crabs and perhaps even the people who eat them.
We are analytical and environmental chemists who are studying ways to remove those microplastics – and the toxic chemicals they carry – before they reach waterways and the aquatic organisms that live there.
Tires shed tiny microplastics as they move over roadways. Rain washes those tire wear particles into ditches, where they flow into streams, lakes, rivers and oceans.
Researchers in 2020 found that more than half of the coho salmon returning to streams in Washington state died before spawning, largely because of 6PPD-Q, a chemical stemming from 6PPD, which is added to tires to help keep them from degrading.
In a study in China, the same chemical, 6PPD-Q, was also found in the urine of children and adults. While the effects of this chemical on the human body are still being studied, recent research shows that exposure to this chemical could harm multiple human organs, including the liver, lungs and kidneys.
In Oxford, Mississippi, we identified more than 30,000 tire wear particles in 24 liters of stormwater runoff from roads and parking lots after two rainstorms. In heavy traffic areas, we believe the concentrations could be much higher.
At the University of Mississippi, we are experimenting with sustainable ways of removing tire wear particles from waterways with accessible and low-cost natural materials from agricultural wastes.
The idea is simple: Capture the tire wear particles before they reach the streams, rivers and oceans.
In a recent study, we tested pine wood chips and biochar – a form or charcoal made from heating rice husks in a limited oxygen chamber, a process known as pyrolysis – and found they could remove approximately 90% of tire wear particles from water runoff at our test sites in Oxford.
Boluwatife S. Olubusoye, one of the authors of this article, positions a filter sock filled with biochar under a storm drain. James Cizdziel/University of Mississippi
We designed a biofiltration system using biochar and wood chips in a filter sock and placed it at the mouth of a drainage outlet. Then we collected stormwater runoff samples and measured the tire wear particles before and after the biofilters were in place during two storms over the span of two months. The concentration of tire wear particles was found to be significantly lower after the biofilter was in place.
We believe this approach holds strong potential for scalability to mitigate tire wear particle pollution and other contaminants during rainstorms.
Since biochar and wood chips can be generated from agricultural waste, they are relatively inexpensive and readily available to local communities.
Long-term monitoring studies will be needed, especially in heavy traffic environments, to fully determine the effectiveness and scalability of the approach. The source of the filtering material is also important. There have been some concerns about whether raw farm waste that has not undergone pyrolysis could release organic pollutants.
Like most filters, the biofilters would need to be replaced over time – with used filters disposed of properly – since the contaminants build up and the filters degrade.
Plastic waste is harming the environment, the food people eat and potentially human health. We believe biofilters made from plant waste could be an effective and relatively inexpensive, environmentally friendly solution.
Boluwatife S. Olubusoye received partial funding from the Center for Biodiversity and Conservation Research (CBCR) at the University of Mississippi
James V Cizdziel received funding from the National Science Foundation (MRI Grant #2116597) for the instrument used to analyze samples for microplastics.
The Trump administration is decreasing the attention federal regulators pay to pipeline leaks. But leaks from natural gas pipelines don’t just waste energy and warm the planet – they can also make the air more dangerous to breathe. That air pollution threat grows not just in the communities where the leaks happen but also as far as neighboring states, as our analysis of gas leaks and air pollution levels across the U.S. has found.
For instance, in September 2018 the Merrimack Valley pipeline explosion in Massachusetts, which released roughly 2,800 metric tons of methane, damaged or destroyed about 40 homes and killed one person. We found that event caused fine-particle air pollution concentrations in downwind areas of New Hampshire and Vermont to spike within four weeks, pushing those areas’ 2018 annual average up by 0.3 micrograms per cubic meter. That’s an increase of about 3% of the U.S. EPA’s annual health standard for PM2.5. Elevated air pollution then showed up in New York and Connecticut through the rest of 2018 and into 2019.
In our study, we examined pipeline leak data from the U.S. Pipeline and Hazardous Materials Safety Administration from 2009 to 2019 and data about the state’s level of small particulate matter in the air from Columbia University’s Center for International Earth Science Information Network. We also incorporated, for each state, data on environmental regulations, per-capita energy consumption, urbanization rate and economic productivity per capita.
In simple terms, we found that in years when a state – or its neighboring states – experienced more methane leak incidents, that state’s annual average fine-particle air pollution was measurably higher than in years with fewer leaks.
A 2018 natural gas leak and explosion in Massachusetts destroyed and damaged homes, killed one person and increased air pollution over a wide area. John Tlumacki/The Boston Globe via Getty Images
Methane’s role in fine‑particle formation
Natural gas is primarily made of methane, a powerful greenhouse gas. But methane also helps set off chemical reactions in the air that lead to the formation of tiny particles known as PM2.5 because they are smaller than 2.5 micrometers (one ten-thousandth of an inch). They can travel deep into the lungs and cause health problems, such as increasing a person’s risk of heart disease and asthma.
So, when natural gas leaks, energy is wasted, the planet warms and air quality drops. These leaks can be massive, like the 2015 Aliso Canyon disaster in California, which sent around 100,000 metric tons of methane into the atmosphere.
But smaller leaks are also common, and they add up, too: Because the federal database systematically undercounts minor releases, we estimate that undocumented small leaks in the U.S. may total on the order of 15,000 metric tons of methane per year – enough to raise background PM2.5 by roughly 0.1 micrograms per cubic meter in downwind areas. Even this modest increase can contribute to health risks: There is no safe threshold for PM2.5 exposure, with each rise of 1 microgram per cubic meter linked to heightened mortality from cardiovascular and respiratory diseases.
The most direct way to reduce this problem is to reduce the number and quantity of methane leaks from pipelines. This could include constructing them in ways or with materials or processes that are less likely to leak. Regulations could create incentives to do so or require companies to invest in technology to detect methane leaks quickly, as well as encourage rapid responses when a leak is identified, even if it appears relatively small at first.
Reducing pipeline leaks would not just conserve the energy that is contained in the methane and reduce the global warming that results from increasing amounts of methane in the atmosphere. Doing so would also improve air quality in communities that are home to pipelines and in surrounding areas and states.
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.
Source: The Conversation – USA (2) – By Camille Banger, Assistant Professor in Business Information Technology, University of Wisconsin-Stout
Students pick up on AI-infused apps quickly, but generative AI appears to require more reflection on how to use technology.Hill Street Studios via Getty Images
The tech world says generative artificial intelligence is essential for the future of work and learning. But as an educator, I still wonder: Is it really worth bringing it into the classroom? Will these tools truly help students learn, or create new challenges we haven’t yet faced?
Like many other people in higher education, I was skeptical but knew I couldn’t ignore it. So, instead of waiting for all the answers, I decided to dive in and discover what preparing students for an AI-powered world really means beyond the hype. Last semester, I developed a business technology class where the latest generative AI tools were woven into the curriculum.
What I found is that AI productivity products have a learning curve, much like other applications that students, and ultimately white-collar workers, use in knowledge work. But I needed to adjust how I taught the class to emphasize critical thinking, reflection on how these tools are being used and checks against the errors they produce.
The project
It’s no secret that generative AI is changing how people work, learn and teach. According to the 2025 McKinsey Global Survey on AI, 78% of respondents said their organizations use AI in at least one business function, and many are actively reskilling their workforce or training them with new skills to meet the demands of this shift.
As program director of the Business Information Technology bachelor’s degree program at the University of Wisconsin-Stout, Wisconsin’s polytechnic university, I spend a lot of time thinking about how to prepare students for the workplace. I’m also an AI enthusiast, but a skeptical one. I believe in the power of these tools, but I also know they raise questions about ethics, responsibility and readiness.
So, I asked myself: How can I make sure our students are ready to use AI and understand it?
In spring 2025, University of Wisconsin-Stout launched a pilot for a small group of faculty and staff to explore Microsoft 365 Copilot for business. Since it works alongside tools such as Word, Excel, Outlook, PowerPoint, OneDrive and Teams, which are products our students already use, I saw an opportunity to bring these latest AI features to them as well.
To do that, I built an exploratory project into our senior capstone course. Students were asked to use Copilot for Business throughout the semester, keep a journal reflecting on their experience and develop practical use cases for how AI could support them both as students and future professionals. I didn’t assign specific tasks. Instead, I encouraged them to explore freely.
My goal wasn’t to turn them into AI experts overnight. I wanted them to build comfort, fluency and critical awareness about how and when to use AI tools in real-world contexts.
What my students and I learned
What stood out to me the most was how quickly students moved from curiosity to confidence.
Many of them had already experimented with tools such as ChatGPT and Google Gemini, but Copilot for Business was a little different. It worked with their own documents, emails, meeting notes and class materials, which made the experience more personal and immediately relevant.
In their journals, students described how they used Copilot to summarize Teams video meetings, draft PowerPoint slides and write more polished emails. One student said it saved them time by generating summaries they could review after a meeting instead of taking notes during the call or rewatching a recording. Another used it to check their assignment against the rubric – a scoring tool that outlines the criteria and performance levels for assessing student work – to help them feel more confident before submitting their work.
College students will likely be asked to use AI features in business productivity applications once they enter the workforce. What’s the best way to teach them how to effectively use them? Denise Jans on Unsplash
Several students admitted they struggled at first to write effective prompts – the typed requests that guide the AI to generate content – and had to experiment to get the results they wanted. A few reflected on instances where Copilot, like other generative AI tools, produced inaccurate or made-up information, or hallucinations, and said they learned to double-check its responses. This helped them understand the importance of verifying AI-generated content, especially in academic and professional settings.
Some students also said they had to remind themselves to use Copilot instead of falling back on other tools they were more familiar with. In some cases, they simply forgot Copilot was available. That feedback showed me how important it is to give students time and space to build new habits around emerging technologies.
What’s next
While Copilot for Business worked well for this project, its higher cost compared with previous desktop productivity apps may limit its use in future classes and raises ethical questions about access.
That said, I plan to continue expanding the use of generative AI tools across my courses. Instead of treating AI as a one-off topic, I want it to become part of the flow of everyday academic work. My goal is to help students build AI literacy and use these tools responsibly and thoughtfully, as a support for their learning, not a replacement for it.
Historically, software programs enabled people to produce content, such as text documents, slides or the like, whereas generative AI tools produce the “work” based on user prompts. This shift requires a higher level of awareness about what students are learning and how they’re engaging with the materials and the AI tool.
This pilot project reminded me that integrating AI into the classroom isn’t just about giving students access to new tools. It’s about creating space to explore, experiment, reflect and think critically about how these tools fit into their personal and professional lives and, most importantly, how they work.
As an educator, I’m also thinking about the deeper questions this technology raises. How do we ensure that students continue developing original thoughts and critical thinking when AI can easily generate ideas or content? How can we preserve meaningful learning while still taking advantage of the efficiency these tools offer? And what kinds of assignments can help students use AI effectively while still demonstrating their own thinking?
These questions aren’t easy, but they are important. Higher education has an important role to play in helping students use AI and understand its impact and their responsibility in shaping how it’s used.
Striking the right balance between fostering original thought and critical thinking with AI can be tricky. One way I’ve approached this is encouraging students to first create their content on their own, then use AI for review. This way, they maintain ownership of their work and see AI as a helpful tool rather than a shortcut. It’s all about knowing when to leverage AI to refine or enhance their ideas.
One piece of advice I received that really stuck with me was this: Start small, be transparent and talk openly with your students. That’s what I did, and it’s what I’ll continue doing as I enter this next chapter of teaching and learning in the age of AI.
Camille Banger 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.
Source: The Conversation – USA (2) – By Jennifer Duyne Barenstein, Senior Lecturer of Social Anthropology, Swiss Federal Institute of Technology Zurich
Located in the Peñarol neighborhood of Montevideo, COVIMT 1 was the city’s first mutual aid housing cooperative. It was founded by textile workers, who completed construction of the complex in 1972.Bé Estudio, CC BY-SA
More than 1.8 billion people lack access to adequate and affordable housing. Yet too few countries have taken meaningful steps to ensure dignified housing for their most vulnerable citizens.
We research how cooperative housing can serve as one solution to the affordable housing crisis. There are a variety of cooperative housing models. But they generally involve residents collectively owning and managing their apartment complexes, sharing responsibilities, costs and decision-making through a democratic process.
Other countries, such as El Salvador and Colombia, have struggled to integrate housing cooperatives into their countries’ preexisting housing policies. In fact, although Latin America has a long-standing tradition of community-driven and mutual aid housing, housing cooperatives haven’t taken root in many places, largely due to weak political and institutional backing.
Uruguay is an exception.
With a population of just 3.4 million, the small Latin American nation has a robust network of housing cooperatives, which give access to permanent, affordable housing to citizens at a range of income levels.
An experiment becomes law
Housing cooperatives in Uruguay emerged in the 1960s during a time of deep economic turmoil.
The first few pilot projects delivered outstanding results. Financed through a mix of government funds, loans from the Inter-American Development Bank and member contributions, they were more cost-effective, faster to build and higher in quality than conventional housing.
These early successes played a key role in the passage of Uruguay’s National Housing Law in 1968. This law formally recognized housing cooperatives and introduced a legal framework that supported different models. The most common models to emerge roughly translate to “savings cooperatives” and “mutual aid cooperatives.”
In the savings model, members pool their savings to contribute around 15% of the capital investment. This gives them access to a government-subsidized mortgage to finance the construction. The cooperative then determines how repayment responsibilities are distributed among its members. Typically, members purchase “social shares” in the cooperative, equivalent to the cost of the assigned housing unit. If a member decides to leave the cooperative, their social shares are reimbursed. These shares are also inheritable, allowing them to be passed on to heirs.
In contrast, the mutual aid model enables households without savings to participate by contributing 21 hours per week toward construction efforts. Tasks are assigned to individuals according to their abilities. They can range from manual labor to administrative tasks, such as the ordering of construction materials.
Despite their differences, both models share a fundamental principle: The land and housing units are held collectively and are permanently removed from the private market.
Typically, once cooperatives are established, each household must contribute a monthly fee that covers the repayment of the state’s loan and maintenance costs. In exchange, members have an unlimited and inheritable contract of “use and enjoyment” of a quality apartment. If a member decides to leave, they are partially reimbursed for the contributions they’ve made over time, typically with a 10% deduction that the cooperative keeps.
This ensures that cooperative housing provides long-term security and remains affordable, especially for those at the lowest rungs of the income ladder.
This growth has been possible thanks to state support, federations of cooperatives and nonprofit groups.
The state recognized that the success of housing cooperatives depended on sustained public support. The National Housing Law defined the rights and responsibilities of cooperatives. It also outlined the state’s obligations: overseeing operations, setting criteria for financial assistance and providing access to land.
Beyond organizing and advocating for the right to housing – and human rights more broadly – FUCVAM offers its member cooperatives a wide range of support services, including training to strengthen cooperative management, legal counseling and conflict mediation.
Finally, a vital pillar of this model are the Technical Assistance Institutes, which were also recognized by the National Housing Law. These are independent, nonprofit organizations that advise cooperatives.
Their role is crucial: The construction of large-scale housing projects is complicated. The vast majority of citizens have no prior experience in construction or project management. The success of Uruguay’s cooperative model would be unthinkable without their support.
From the outskirts to the city center
Uruguay’s housing cooperatives have not only expanded, but have also evolved in response to changing needs and challenges.
In their early years, most cooperatives built low-density housing on the outskirts of cities. This approach was largely influenced by the ideals of the Garden City movement, a planning philosophy of the late 19th century that prioritized low-density housing and a balance between development and green spaces. In Uruguay, there was also a cultural preference for single-family homes. And land was more expensive in city centers.
These early cooperatives, however, contributed to urban sprawl, which has a number of drawbacks. Infrastructure has to be built out. It’s harder to reach jobs and schools. There’s more traffic. And single-family homes aren’t an efficient use of land.
Meanwhile, in the 1970s Montevideo’s historic city center started experiencing abandonment and decay. During this period, the country’s shifting socioeconomic landscape created a set of new challenges. More people relied on irregular incomes from informal work, while more single women became heads of households.
In response, housing cooperatives have shown a remarkable ability to adapt.
For women, by women
As urban sprawl pushed development outward, Montevideo’s historic center, Ciudad Vieja, was hemorrhaging residents. Its historic buildings were falling apart.
Seeking to revitalize the area without displacing its remaining low-income residents, the city saw housing cooperatives as a solution.
This spurred the creation of 13 mutual aid cooperatives in Ciudad Vieja, which now account for approximately 6% of all housing units in the area.
One of the pioneers of this effort was Mujeres Jefas de Familia, which translates to Women Heads of Household. Known by the acronym MUJEFA, it was founded in 1995 by low-income, single mothers. MUJEFA introduced a new approach to cooperative housing: homes designed, built and governed with the unique needs of women in mind.
Architect Charna Furman spearheaded the initiative. She wanted to overcome the structural inequalities that prevent women from finding secure housing: financial dependence on men, being primary caregivers, and the absence of housing policies that account for single women’s limited access to economic resources.
Remaining in Ciudad Vieja was important to members of MUJEFA. Its central location allowed them to be close to their jobs, their kids’ schools, health clinics and a close-knit community of friends and family.
However, the project faced major hurdles. The crumbling structure the group acquired in 1991 – an abandoned, heritage-listed building – needed to be transformed into 12 safe, functional apartments.
The cooperative model had to adapt. Municipal authorities temporarily relaxed certain regulations to allow older buildings to be rehabbed as cooperatives. There was also the challenge of organizing vulnerable people – often long-time residents at risk of eviction, who were employed as domestic workers or street vendors – into groups that could actively participate in the renovation process. And they had to be taught how to retrofit an older building.
Today, 12 women with their children live in the MUJEFA cooperative. It’s a compelling example of how cooperative housing can go beyond simply putting a roof over families’ heads. Instead, it can be a vehicle for social transformation. Women traditionally excluded from urban planning were able to design and construct their own homes, creating a secure future for themselves and their children.
Building up, not out
COVIVEMA 5, completed in 2015, was the first high-rise, mutual aid cooperative in a central Montevideo neighborhood. Home to around 300 residents, it’s made up of 55 units distributed across two buildings.
Members participated in the building process with guidance from the Centro Cooperativista Uruguayo, one of the oldest and most respected Technical Assistance Institutes. Architects had to adapt their designs to make it easier for regular people with little experience in construction to complete a high-rise building. Cooperative members received specialized training in vertical construction and safety protocols. While members contributed to the construction, skilled labor would be brought in when necessary.
Members of the cooperative also designed and built Plaza Luisa Cuesta, a public square that created open space in an otherwise dense neighborhood for residents to gather and socialize.
Housing cooperatives are neither public nor private. They might be thought of as an efficient and effective “third way” to provide housing, one that gives residents a stake in their homes and provides long-term security. But their success depends upon institutional, technical and financial support.
Jennifer Duyne Barenstein receives funding from The Swiss National Science Foundation. She is affiliated with the Centre for Research on Architecture, Society and the Built Environment, Department of Architecture, ETH Zurich
Daniela Sanjinés receives funding from the Swiss National Science Foundation. She is affiliated with the Centre for Research on Architecture, Society and the Built Environment, Department of Architecture, ETH Zurich.
After South Africa’s first democratic elections in 1994, there was significant optimism about police reform in the country. Impressive steps were taken to bring the South African Police Service under civilian control and to create a service responsive to calls for assistance from the public.
During the apartheid period, South Africa’s police worked to preserve the political order and pursue political opponents. It did not focus on dealing with crime. This is why the achievements of the 1990s are so important. For the first time, black South Africans could call upon officers to respond to personal emergencies. This period also saw a drop in crime levels.
However, this promising early transformation was interrupted. The appointment of Jackie Selebi as national police commissioner in 2000 heralded a new era. Selebi was an African National Congress (ANC) insider. The ANC originated as a liberation movement and has governed the country since 1994.
Selebi had served as the head of the ANC’s Youth League in the 1980s, when it was banned. In 1987 he was appointed to the organisation’s national executive committee, its highest decision-making organ.
His appointment as police commissioner was the start of significant change in the purpose of policing. It marked the end of the focus on civilian control of the police force and prosecuting authorities. As an ANC insider, Selebi led efforts to establish party control over the police.
Other telling developments ensued. The Scorpions were disbanded in 2009 by acting president Kgalema Motlanthe. The unit’s job was to pursue high-profile cases against senior ANC politicians (among others).
The police became increasingly entangled in the ANC’s internal political conflicts. At the same time the office of the national police commissioner experienced high turnover due to intense political manoeuvring. Between 2009 and 2022, there were seven national commissioners.
Recent developments have once again brought the intermingling of police work and power battles in the ANC to the fore. In early July 2025, Lieutenant General Nhlanhla Mkhwanazi, the commissioner of police in the province of KwaZulu-Natal, made some startling claims. He called a press conference and, wearing camouflage uniform, he implicated the minister of police, Senzo Mchunu, together with the deputy national commissioner for crime detection, in a scheme to close down investigations into political assassinations in the province.
President Cyril Ramaphosa rushed back from a meeting of the Brics countries in Brazil to attend to the matter. He announced that the police minister had been placed on leave with immediate effect. He also announced a judicial inquiry into the allegations.
I have conducted research into South Africa’s security apparatus over the last decade. Based on this work, and new research forthcoming in the Journal of Southern African Studies done with Jelena Vidojevic, co-founder of the New South Institute, it is clear that elite contestation in the ANC is intensifying.
In other words, the ability of internal party structures to manage gatekeeping is declining. Many of the people involved are indifferent or even hostile to South Africa’s democratic and constitutional order.
As the ability of some political elites to access state resources through the party declines, some are linked with organised criminal networks. Organised crime has been on the edges of South African politics. It now risks taking a more central role.
In this environment, the police service will often be the thin (blue) line between multiparty contestation according to constitutional rules and the criminalisation of politics in South Africa.
The shift
Large organisational changes within the police vividly illustrate this shift away from its core function.
The Visible Policing programme was meant to meant to deter crime through patrols, checkpoints and roadblocks. But, instead, there was a steady decline in resource allocation. Employee numbers dropped between 2015 and 2021.
Detective services and crime intelligence also experienced such declines.
Conversely, employee numbers in the Protection and Security Services programme, responsible for providing bodyguards to politicians, increased sharply between 2014 and 2016.
Evidence heard by the commission of inquiry into state capture suggested that some officers and budgets in the service were even used to supply President Jacob Zuma and other politicians with what amounted to a private militia.
This reorientation of resources coincided with a rise in crime across the country, a decline in arrests by 24.5%, and a drop in the police’s efficacy in solving crimes.
Furthermore, a politicised police leadership effectively stopped policing various categories of crime. This was particularly true of offences like fraud, corruption, and certain types of theft, and particularly when politically connected persons were involved.
The state capture commission heard extensive evidence about the failure of the police to pursue politically sensitive investigations. Investigations into senior officials were frequently frustrated or impeded, and cases at state-owned enterprises were abandoned.
This shows how police resources were actively redirected as weapons of elite competition, pursuing political enemies and protecting allies within the ruling party.
Mkhwanazi’s claims, if substantiated, suggest that this political policing remains entrenched.
What now?
Ramaphosa has announced the appointment of Firoz Cachalia as the acting minister of police. Cachalia, a well regarded legal academic, served as ANC minister for community safety. Between 2019 and 2022 he was part of the ANC’s national executive committee.
His appointment raises serious questions.
If the core problem with the police is that it has become embroiled in ANC internal politics, having an ANC insider head the ministry of police (even if only on an acting basis) threatens only to compound the problem.
Moreover, South Africans have already witnessed a long and expensive judicial inquiry into state capture. And despite extensive evidence of police failure to pursue politically sensitive investigations, nothing concrete has come of it.
How likely is it that this new initiative will be any different, especially if those investigating it and presiding over key institutions are themselves ANC insiders?
To depoliticise the police service and redirect its attention and activities towards crime and emergencies, a crucial first step is to reconsider the appointment processes for the national police commissioner and other top managers.
Under the current system the president has sole discretion. This bakes party-political considerations into the decision-making process.
Without structural changes, genuine democratic policing will remain an elusive ideal.
In 2024/25 the murder rate in South Africa stood at 42 per 100,000, among the highest in the world and close to levels not seen since the early 2000s.
At the very least, the minister of police must not be an ANC insider. Democratic renewal in South Africa requires bringing the police firmly under parliamentary control.
Ivor Chipkin teaches public policy at the Gordon Institute of Business Science (GIBS) at the University of Pretoria. He is the director of the New South Institute.
Spurred on by hashtags and usernames indicating these feats involve steroids, soon Mark is online, ordering his first “steroid cycle”. No script, no warnings, just vials in the mail and the promise of “gains”.
A few weeks later, he’s posting progress shots and getting tagged as #MegaMark. He’s pleased. But what if I told you Mark was unknowingly injecting toxic chemicals?
In our new research we tested products sold in Australia’s underground steroid market and found many were mislabelled or missing the expected steroid entirely.
Even more concerning, several contained heavy metals such as lead, arsenic and cadmium. These substances are known to cause cancer, heart disease and organ failure.
What are anabolic steroids, and who is using them?
Anabolic steroids are synthetic drugs designed to mimic the effects of testosterone. Medical professionals sometimes prescribe them for specific health conditions (for example, hypogonadism, where the body isn’t making enough sex hormones). But they are more commonly taken by people looking to increase muscle size, improve athletic performance, or elevate feelings of wellbeing.
In Australia, it’s illegal to possess steroids without a prescription. This offence can attract large fines and prison terms (up to 25 years in Queensland).
Despite this, they’re widely available online and from your local “gym bro”. So it’s not surprising we’re seeing escalating use, particularly among young men and women.
People usually take steroids as pills and capsules or injectable oil- or water-based products. But while many people assume these products are safe if used correctly, they’re made outside regulated settings, with no official quality checks.
For this new study, we analysed 28 steroid products acquired from people all over Australia which they’d purchased either online or from peers in the gym. These included 16 injectable oils, ten varieties of oral tablets, and two “raw” powders.
An independent forensic lab tested the samples for active ingredients, contaminants and heavy metals. We then compared the results against what people thought they were taking.
More than half of the samples were mislabelled or contained the wrong drug. For example, one product labelled as testosterone enanthate (200mg/mL) contained 159mg/mL of trenbolone (a potent type of steroid) and no detectable testosterone. Oxandrolone (also known as “Anavar”, another type of steroid) tablets were sold claiming a strength of 10mg but actually contained 6.8mg, showing a disparity in purity.
Just four products matched their expected compound and purity within a 5% margin.
But the biggest concern was that all steroids we analysed were contaminated with some level of heavy metals, including lead, arsenic and cadmium.
While all of the concentrations we detected were within daily exposure limits regarded as safe by health authorities, more frequent and heavier use of these drugs would quickly see people who use steroids exceed safe thresholds. And we know this happens.
If consumed above safe limits, research suggests lead can damage the brain and heart. Arsenic is a proven carcinogen, having been linked to the development of skin, liver and lung cancers.
People who use steroids often dose for weeks or months, and sometimes stack multiple drugs, so these metals would build up. This means long‑term steroid use could be quietly fuelling cognitive decline, organ failure, and even cancer.
What needs to happen next?
Heavy metals such as lead, arsenic and cadmium often contaminate anabolic steroid products because raw powders sourced from some manufacturers, particularly those in China, may be produced with poor quality control and impure starting materials. These metals can enter the supply chain during synthesis, handling, or from contaminated equipment and solvents, leading to their presence in the final products.
Steroid use isn’t going away, so we need to address the potential health harms from these contaminants.
While pill testing is now common at festivals for drugs such as ecstasy, testing anabolic steroids requires more complex chemical analysis that cannot be conducted on-site. Current steroid testing relies on advanced laboratory techniques, which limits availability mostly to specialised research programs such as those in Australia and Switzerland.
We need to invest properly in a national steroid surveillance and testing network, which will give us data‑driven insights to inform targeted interventions.
We also need to see peer‑led support through trusted programs to educate people who use steroids around the risks. The programs should be based in real evidence, and developed by people with lived experience of steroid use, in partnership with researchers and clinicians.
Timothy Piatkowski receives funding from Queensland Mental Health Commission. He is affiliated with Queensland Injectors Voice for Advocacy and Action as the Vice President. He is affiliated with The Loop Australia as the research lead (Queensland).
