Category: The Conversation – UK

Source: The Conversation – UK – By Daniel Lawrence, Senior Lecturer in Forensic Psychology, Cardiff Metropolitan University

Restrictive practices in mental health settings – such as physical restraint and seclusion – are meant to be a last resort, used only when patients pose a risk to themselves or others.

In 2021 and 2022 alone, NHS England reported that 6,600 mental health patients were subjected to physical restraint, and 4,500 to seclusion. Figures such as these have led numerous experts and policymakers to conclude that restrictive practices are overused in mental health inpatient settings.

The consequences can be devastating. Restrictive practices are associated with trauma, worsening mental health, and even death. For decades, clinicians, researchers and policymakers have called for their reduction. Progress, however, remains painfully slow.

For the past five years, I have been researching the use of restrictive practices in mental health services and exploring how to reduce them. My new research demonstrates the importance of using compassion to support staff to promote the dignity and wellbeing of patients as a priority.

Restrictive practices have a long history that predates the development of asylums and psychiatry as a medical discipline. The use of legislation to detain people on the basis of their mental health in England, for example, dates back to at least the 14th century. Early examples of restrictive practices included patients being bound and beaten with rods in order to “restore sanity”.

During the first three decades of the 19th century, mechanical restraints such as straitjackets, chains and restraint chairs and confining patients in locked rooms were widely accepted methods of controlling violent people in British asylums. But in the 1830s, some clinicians recognised the moral and ethical problems with using such practices, and a campaign began to abolish them.

The UN has long recognised restrictive practices in mental healthcare as a human rights issue. In 2008, the UN’s special rapporteur on torture stated that methods such as solitary confinement violate articles 14 and 15 of the Convention on the Rights of Persons with Disabilities, which protect against arbitrary detention and cruel, inhuman or degrading treatment.

This stance was reaffirmed in 2021 when the UN declared that restrictive practices breach the fundamental rights of patients. This underscores the urgent need for reform in mental healthcare systems worldwide.

Harmful effect

Research shows that restrictive practices may not only harm patients but contradict the goals of mental healthcare. Many mental health problems stem from traumatic experiences that leave people feeling powerless, unsafe and distressed. Using methods that reinforce these feelings can worsen the very issues services aim to address.

In extreme incidents, people have died as a result of restrictive practices use.

In my research, I have developed a theoretical model identifying core factors that perpetuate the use of restrictive practices in mental health services. These include the emotional challenges faced by staff working in high-stress environments, and how these challenges influence their decision-making.

Mental health wards can be highly stressful environments, with frequent incidents of aggression. In such settings, staff can often feel anxious and hyper-vigilant, which can make it harder for them to respond to patients with compassion.

Research shows that threat-based emotions like fear and anger are linked to a greater likelihood of using restrictive measures. So, this cycle perpetuates the use of these harmful practices.

Compassion may hold the key

Using restrictive practices to control or remove people who are perceived as a threat can provide staff with a sense of immediate safety, which may inadvertently reinforce their use. To address this, I wanted to explore whether supporting staff to manage their emotions more effectively could reduce their reliance on restrictive practices, and foster a more compassionate approach to care.

As part of my research, I introduced compassion-focused support groups for staff in several forensic mental health wards, advocating for a more empathetic and patient-centred approach. These groups tried to equip participants with skills to better manage challenging emotional experiences while fostering greater compassion for both themselves and the people in their care.

The aim was to help staff cultivate an inner sense of safety, reducing their reliance on restrictive practices as a means of managing their own feelings of threat. This intervention was encouraging, leading to reductions in the use of restrictive practices in some conditions – demonstrating the potential of using compassionate care for these purposes.

My study was the first of its kind – bur these initial results highlight the need for further research into how the emotional management of staff influences care decisions. The journey toward change is slow, but it is possible. Compassion may hold the key to addressing a deeply entrenched issue that has shaped the treatment of mental health patients for centuries.

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Daniel Lawrence is affiliated with the Labour Party.

– ref. Physically restricting mental health patients can often harm them – my new study suggests compassion could change that – https://theconversation.com/physically-restricting-mental-health-patients-can-often-harm-them-my-new-study-suggests-compassion-could-change-that-244782

Source: The Conversation – UK – By Neill Raath, Assistant Professor of Sustainable Materials and Manufacturing, University of Warwick

Despite the steady growth of online shopping, a majority of the UK public still prefers to buy groceries at the supermarket.

Shopping trolleys can help us lug our purchases back to the car, but some shoppers are evidently taking them further afield. In 2017, 520,000 trolleys were reported as abandoned in the UK. Sunderland in north-east England alone reported 30,000 abandoned trolleys between 2020 and 2022. Likewise, 550 trolleys were collected in a single day in western Sydney, Australia.

Supermarkets employ a range of methods to stop trolleys leaving their premises, including coin slots, vertical bars (to stop trolleys leaving the shop floor), wheel-locking mechanisms and car park wardens. Despite these efforts, abandoned trolleys still blight the landscape and need to be collected.

Many supermarkets use commercial collection services, such as Wanzl TrolleyWise or TMS Collex. These companies typically use diesel vans to survey suburban areas, collect trolleys and return them to supermarkets. They also offer to refurbish weathered or damaged trolleys, sometimes by applying a zinc-based coating to protect against corrosion – a process known as regalvanisation.

We are researchers at the University of Warwick who wanted to understand the environmental impact of trolley abandonment. So, we set out to investigate it.

Collecting versus manufacturing

How does the environmental impact of using vans to rescue abandoned trolleys compare with losing these trolleys to excessive damage or corrosion and having to make new ones?

Our study used a standardised methodology known as life-cycle assessment to analyse the potential environmental impact of collecting and handling abandoned shopping trolleys within an area of Coventry, a city in the English West Midlands, which includes our university campus.

We spoke to trolley suppliers, who told us trolleys used at the supermarket in Coventry were most likely made in Spain. This was incorporated into our model.

Through conversations with our university’s estates department and commercial collection services, we established that approximately 30 trolleys were collected a week on average in the area surrounding the Tesco supermarket in the Cannon Park shopping centre.

Our model assumed that a bulk transport of 50 trolleys is sent twice each year to be refurbished, in a round trip of 220km between Coventry and a refurbishment facility based in the UK that was noted on stickers placed on refurbished trolleys.

Vans collecting 520,000 abandoned trolleys in a year could emit the equivalent of 343 tonnes of CO₂ (the annual equivalent of driving 80 petrol cars). If we imagine that 10% of these 520,000 trolleys have been left outside too long and need to be regalvanised then the total global warming impact increases by 90% to the equivalent of 652 tonnes CO₂ (roughly the same as 152 petrol cars being driven for one year).

This is quite a surprising increase for such a small number of trolleys. It suggests that the real problem lies with the environmental impact of manufacturing.

Most of the emissions can be avoided

We found that one trolley would have to be collected 93 times by a diesel van to have the same environmental impact as manufacturing a new one.

Our results showed that the emissions incurred during the diesel van collection phase were only 1% of the manufacturing impact, and the regalvanisation stage was only 8%. We might wonder whether switching to electrically powered collection vans might help. While the emissions would be reduced, the impact of using diesel vans is still minuscule compared to that of making new trolleys.

We found that the highest environmental impact stemmed from manufacturing, which was mainly attributed to making and replacing the steel frame of the trolley.

These results reinforce the benefits of following the circular-economy principle of keeping trolleys in use for as long as possible, and avoiding manufacturing to replace abandoned ones.

Would anything change if we switched to plastic trolleys? Other researchers have investigated the effect of changing trolley materials and have found that trolleys made of polymers have many benefits compared with steel: they use less material, are less dense (a benefit for collection vans that emit less by driving around lighter products) and do not require protective coatings, which themselves have an environmental impact.

However, if these polymer trolleys were to be sent to landfill (or left to deteriorate in the environment), they could release carcinogenic chemicals, as well as microplastics, as they break down. This leads us back to the importance of keeping products in use.

Abandoning trolleys is bad for the environment, with a potential global warming impact equivalent to 0.69 kg CO₂ for collecting one trolley and returning it to a supermarket. If we multiply this by the potential 520,000 abandoned trolleys a year, this figure becomes quite big.

Preventing trolley abandonment should be a priority not just for supermarkets, but for the general public as well. However, once a trolley is abandoned, it is far better to collect and refurbish it than to let it fall out of use and manufacture a new one, as 92–99% of the environmental impact can be avoided.

While it is unlikely that we can ever stop trolleys being abandoned, we hope that next time people see a trolley in an alley or park bush, the potential environmental impact of losing this trolley to service would be apparent.

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

– ref. Counting the climate costs of abandoned shopping trolleys – https://theconversation.com/counting-the-climate-costs-of-abandoned-shopping-trolleys-258500

Source: The Conversation – UK – By Cock Van Oosterhout, Professor of Evolutionary Genetics, University of East Anglia

Earth’s biodiversity is in crisis. An imminent “sixth mass extinction” threatens beloved and important wildlife. It also threatens to reduce the amount of genetic diversity – or variation – within species.

This variation in genes within a species is crucial for their ability to adapt to changes in the environment or resist diseases. Genetic variation is therefore crucial for species’ long term survival.

Traditional conservation efforts – such as protected areas, measures to prevent poaching, and captive breeding – remain essential to prevent extinction. But even when these measures succeed in boosting population numbers, they cannot recover genetic diversity that has already been lost. The loss of a unique gene variant can take thousands of years of evolution before it is recovered by a lucky mutation.

In a new paper in Nature Reviews Biodiversity, an international team of geneticists and wildlife biologists argues that the survival of some species will depend on gene editing, along with more traditional conservation actions. Using these advanced genetic tools, like those already revolutionising agriculture and medicine, can give endangered species a boost by adding genetic diversity that isn’t there.

Genetic engineering is not new. Plant breeders have used it for decades to develop crops with traits to boost disease resistance and drought tolerance. Around 13.5% of the world’s arable land grows genetically modified crops. Gene-editing tools such as Crispr are also being used in “de-extinction” projects that aim to recreate extinct animals.

The Dallas-based company Colossal Laboratory & Biosciences has attracted headlines for its efforts to bring back the woolly mammoth, dodo and dire wolf. In de-extinction, the DNA of a living relative species is edited (changed) to approximate the extinct species’ most charismatic traits.

For example, to “resurrect” a woolly mammoth, Colossal’s researchers plan to splice mammoth genes (recovered from ancient remains) into the genome of the Asian elephant to produce a cold-hardy, hairy elephant-mammoth hybrid. Colossal recently engineered grey wolf pups with 20 gene edits from the extinct dire wolf’s DNA.

The “Jurassic Park”-style revival of long-gone creatures has attracted considerable attention and funding, which has accelerated the development of genome engineering techniques. These same genome editing tools can be used for conservation of existing and endangered species. If we can edit a mouse to have mammoth hair, or edit a wolf to resemble a dire wolf, why not edit an endangered bird’s genome to make it more resilient to disease and climate change?

Museum specimens

Using DNA from historical specimens, scientists can identify important genetic variants that a species has lost. Many museums hold century-old skins, bones, or seeds – a genomic time capsule of past diversity. With genome editing, it is possible to reintroduce these lost variants into the wild gene pool.

By restoring genetic variation, species can be fortified against emerging diseases and environmental change. A sharp decline in population numbers is called a “bottleneck”. During a bottleneck, inbreeding and genetic drift lead to the random loss of genetic diversity. Harmful mutations can also increase in frequency. Such “genomic erosion” compromises the health of individuals and can make populations more prone to extinction.

If we can pinpoint a particularly damaging mutation that has become widespread in the population or a variant that has been lost, we could replace it in a few individuals using gene editing. Aided by natural selection, the healthy variant would gradually spread in the population.

If a threatened species lacks genes that it desperately needs to survive new conditions, why not borrow them from a close relative that already has those traits? Known as facilitated adaptation, this could help wildlife cope with threats such as climate change.

In agriculture, such cross-species gene transfers are routine. Tomatoes have been engineered with a mustard plant gene to tolerate cold, and chestnut trees got a wheat gene for disease resistance. There is no reason why such techniques cannot be expanded to animals.

These genetic interventions can complement, but never replace traditional conservation measures. Habitat protection, control of invasive predators, captive breeding programmes, and other on-the-ground action remain absolutely necessary. Importantly, gene editing only makes sense if the target population has recovered in numbers enough (often through conservation), to allow natural selection to do its job.

Measuring the risk of extinction

Gene-edited animals or plants wouldn’t have a chance if released into a barren habitat or a poaching hotspot. Genomic tools can give an extra edge to species that are already being saved from immediate threats, equipping them for adaptive evolution in the future.

Climate zones are shifting, new diseases are spreading, and once-isolated populations are cut off in small fragments of habitat. Without intervention, even intensive habitat management might not prevent a wave of extinctions.

However, a strategy of gene editing also comes with significant risks and unknowns. One technical concern is off-target effects – Crispr and other gene-editing techniques might make unintended DNA changes in addition to the intended edit. In other words, you attempt to insert a disease-resistance gene, but accidentally disrupt another gene in the process. Similarly, a gene may have more than one function, which is known as pleiotropy.

Especially in less-well studied species, we may not be aware of all those functions or pleiotropic effects. Regulatory inertia and public scepticism may also present big obstacles – these issues have historically limited the rollout of genetically modified (GM) organisms, particularly in agriculture.

There are also evolutionary and ecological uncertainties. A deliberate gene edit might have knock-on effects on how the species evolves over time. For instance, if one individual is given a highly beneficial gene that spreads rapidly, it could replace all the other gene variants at that location in the genome (the full complement of DNA in the organism’s cell). This is known as a “selective sweep”, and it inadvertently reduces the genetic diversity in that region of the genome.

Some critics argue that the narrative of a genetic quick fix could distract from the root causes of biodiversity loss. If people believe we can simply “edit” a species to save it, will that undermine the urgency to protect habitats or cut carbon emissions? Portraying extinction as reversible might seed false hope and reduce the motivation for tough environmental action.

Conservation efforts, strong environmental policies and legal protections remain indispensable. So do habitat restoration, climate action and reducing the impact made on the environment by humans.

Nevertheless, genome engineering is a new tool in the conservation toolbox. It’s one that –given the right assistance and environmental encouragement – can help save species from extinction.

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Cock Van Oosterhout receives funding from the Royal Society for conservation genomics work on threatened bird species in Mauritius, and a donation by the Colossal Foundation for conservation genomic research on the pink pigeon. He is member of the Conservation Genetics Specialist Group of the IUCN (International Union for Conservation of Nature).

– ref. Gene editing technology could be used to save species on the brink of extinction – https://theconversation.com/gene-editing-technology-could-be-used-to-save-species-on-the-brink-of-extinction-261419

Source: The Conversation – UK – By Douglas Schulz, Lecturer in Sociology and Criminology, University of Bradford

Ozzy Osbourne’s death is not just the passing of another rock star. It marks the end of an era – the fading of a figure who helped shape an entire music genre and subculture.

Both as a member of Black Sabbath and as a solo artist, Osbourne’s legacy lies not only in music history but how we understand performance, rebellion, and the expressive power of sound itself.

Despite a long battle with Parkinson’s disease and several health setbacks over the years, the news of his death was a shock to the whole metal community. Just weeks before his death on July 22, Osbourne delivered his final performance with Black Sabbath in the place it all began – Villa Park in Birmingham.

In the hours following the announcement of his death, countless bands and musicians flooded their social media channels to pay their respects.

Osbourne’s life was a testament to reinvention, grit, and the power of artistic authenticity – going from a working-class kid in Aston to the biggest name in heavy metal, writing the soundtrack to so many people’s lives. His distinctive voice, theatrical presence, and sheer will and determination shaped heavy metal music – inspiring generations of musicians and fans.

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When Black Sabbath emerged in the early 1970s, they played a role in making rock music more menacing, grittier and heavier. The Birmingham band didn’t just turn up the amplifiers and played louder guitars – they introduced a new aesthetic. They were known for their doomy riffs and lyrics about war, madness and the occult. Osbourne, with his uncanny voice and stage presence, was at the front and centre.

This sound was destined to become the blueprint for heavy metal. But Osbourne’s contribution went beyond his voice. He gave the genre its face, theatricality – and above all, its spirit of defiance.

Whether he was biting off the head of a bat on stage, stumbling through reality television with absurd but relatable quotes, or delivering genre-defining performances, Osbourne embodied contradictions. He was a mix of menace and mischief, tragedy and comedy, myth and man.

Heavy metal music has existed in tension with mainstream culture ever since its emergence in the UK in the late 1960s. It has been regarded as too aggressive, too loud, too weird. But Osbourne’s presence forced metal into the public discourse – whether through moral panics in the 1970s and ’80s, or through his television appearances in the 2000s. The Osbournes, a reality show following the family which aired on MTV, was a huge hit in the US and around the world, making Ozzy famous to a whole new audience.

Throughout his long career, Osbourne helped shift heavy metal from the margins into the mainstream, without ever diluting its transgressive edge.

A symbol of inspiration

Osbourne’s stage persona carved out space for other artists to follow. His willingness to be ridiculous, to speak openly about his addictions, health struggles and family dysfunction made him oddly relatable. It is that relatability that allowed Osbourne to be metal’s court jester and elder statesman in one.

Over time, bands like Slipknot, Ghost, Sleep Token, as well as more introspective bands like Deftones or Gojira, owe much to the groundwork Osbourne and Black Sabbath laid: a template for authenticity, theatricality, and emotional openness wrapped in spectacle and distortion. They helped define the core rhythms, riffs, themes and aesthetics that generations of metal bands followed.

But Osbourne’s cultural influence cannot be measured only in record sales (although those were plenty), Grammy wins, or his induction into the US Rock and Roll Hall of Fame. His influence lies in how his image, sound and attitude reshaped music scenes across continents.

In countries where metal is censored or underground, Osbourne was a symbol of resistance. In places where metal was accepted, he was the genre’s most unpredictable ambassador.

The Prince of Darkness, as he was known, may have left the stage but his legacy will live on. His music is still looped on Tiktok videos, and memes still make rounds on social media.

Young metal-heads will continue to emulate his style and irreverence. As long as people pick up guitars and look for a way to scream back at the world, Ozzy will be there – in spirit, in sound, and in spectacle.

Douglas Schulz 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. Ozzy Osbourne’s spirit of defiance changed music forever – https://theconversation.com/ozzy-osbournes-spirit-of-defiance-changed-music-forever-261775

Source: The Conversation – UK – By Matt Warren, Managing Director, Universal Impact, The Conversation

We believe in the power of research to change the world for the better. But we also understand that research needs to be shared – effectively and accessibly – if it is to have its greatest impact.

As the Conversation UK’s specialist communications subsidiary, Universal Impact’s mission is to enable researchers to communicate their work, in a targeted way, to a wide range of different audiences. Which is why we’re currently working with Prototypes for Humanity. This Dubai-based academic forum and event promotes innovative scientific solutions and enables international research collaboration.

In April, we blogged about how the forum was seeking applicants for its Professors’ Programme. But applications to join this year’s Prototypes for Humanity annual gathering are now open to current university students on any undergraduate or postgraduate course – as well as graduates who completed their qualifications within the past two years.

The key is that your work potentially offers a tangible solution to a real world problem.

That’s you? Apply now…

Participation is free and successful applicants will showcase their innovative solutions at the Jumeirah Emirates Towers, Dubai, from November 17 to 20, 2025. Flight and accommodation costs are covered by the organiser.

There is also a US$100,000 prize fund to help the best projects roll out in the real world – and the opportunity to connect with a wide range of potential partners, funders and collaborators.

The evaluation criteria are threefold, stating that the successful applicants will be able to show:

Positive impact on people, communities or the planet: Whether addressing social issues, environmental concerns, or community development, demonstrating the project’s potential positive impact will be a crucial factor.

Rigour of academic research: We are seeking projects that demonstrate a deep understanding of the challenges addressed, and the students’ ability to propose meaningful and innovative solutions through structured research.

Application of technology: Innovative and effective use of technology (High-tech or Low-tech) is key, whether incorporating cutting-edge advancements or utilising simple yet efficient solutions.

More than 2,700 entries landed in The Prototypes for Humanity programme’s inbox last year. And researchers from 800 universities, many members of The Conversation’s international network, applied.

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Read more:
Prototypes for Humanity showcases solutions-based projects from universities around the world – in Dubai

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More than 100 projects were chosen to present at that event – and a similar number will be selected for this November’s showcase. The Conversation UK’s editor, Stephen Khan was at the 2024 event and blogged afterwards:

For The Conversation, it was an introduction to some projects that I expect you’ll hear and read more about in our content in the months to come.

While we rightly assess and explain events as they happen, delivering information about new research, and particularly innovative solutions that are born in the labs, studios and seminars of our partner universities is also a central element of our mission as we strive to be the comprehensive conveyor of academic knowledge.

Indeed, two researchers who presented their work – on sustainable batteries – at the 2024 event recently featured on The Conversation Weekly’s award-winning podcast. We expect many more to write about their work for The Conversation down the line.

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Read more:
What will batteries of the future be made of? Four scientists discuss the options – podcast

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You can submit research projects as an individual or group, or ask your professor to submit on your behalf. You can find the application link here and more information on the programme here. The deadline is July 31, 2025.

Good luck.

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Universal Impact is a commercial subsidiary of The Conversation UK, offering specialist training, mentoring and research communication services and donating profits back to our parent charity. If you’re a researcher or research institution and you’re interested in working together, please get in touch – or subscribe to our weekly newsletter to find out more.

– ref. Calling university postgrad and undergrad students – apply to showcase your big ideas in Dubai – https://theconversation.com/calling-university-postgrad-and-undergrad-students-apply-to-showcase-your-big-ideas-in-dubai-261706

Source: The Conversation – UK – By Majdi Faleh, Academic Fellow & Lecturer in Architecture and Cultural Heritage, Nottingham Trent University

Nestled in the southern Mediterranean, off the south-east coast of Tunisia, lies the island of Djerba. With a rich cultural and religious history, it has been a crossroad of many civilisations, including the Phoenicians, Romans, Byzantines and Arabs, and is home to many unique architectural sites. These include the Sedouikech underground mosque, St Joseph’s Church and the El Ghriba Synagogue.

But, for many years, Djerba’s cultural heritage has been in danger. This is due to a combination of over-tourism, environmental change and human neglect.

By the 1990s to early 2000s, when Djerba was at the height of its popularity, the island was attracting between 1 million and 1.5 million visitors each year. It is one of Tunisia’s most popular tourist areas, with more hotels than any other destination in the country.

Tourism has resulted in excessive tourist traffic in Djerba, particularly during the summer. It has also contributed to other problems such as water stress and waste generation. According to figures from 2020, hotels alone generate between 35% and 40% of all the waste on the island.

But the development of tourism has, above all, altered Djerba’s cultural landscape. In some areas of the island, Djerba’s traditional housing – houmas, menzels and houchs – have given way to more modern tourist infrastructure.

This has accelerated since Tunisia’s 2011 revolution, when long-time dictator Zine El Abidine Ben Ali was ousted. Weak institutional oversight has led to vandalism, illegal construction on archaeological sites and unauthorised demolitions.

The development of tourism on Djerba has also eroded traditional ways of life. The island has experienced significant changes due to tourism, with the development of roads, ferries, an airport and the internet leading to a decline in traditional activity. Livelihoods like agriculture, fishing and artisanal crafts have declined and are often now showcased only in tourist areas.

Climate change has worsened Djerba’s problems. Rainfall patterns have changed across the island over recent decades, with models suggesting that annual precipitation rates could drop 20% by the end of the century. More frequent and prolonged droughts are expected.

At the same time, rising sea levels and increasingly common storm surges are affecting the island. Research from 2022 found that 14% of Djerba’s beaches are now highly vulnerable to submersion and coastal erosion.

Several historical monuments on Djerba have already experienced periodic flooding and saltwater intrusion. The ruins of Sidi Garous and the shrine of Sidi Bakour are now entirely underwater and have been replaced by memorials.

Other archaeological sites located near the coast like Haribus, Meninx, Ghizene and Edzira, some of which date back to the Roman era (eighth century BC to fifth century AD), are now partially or fully submerged. Studies by Tunisia’s National Institute of Heritage suggest that many of these sites have been lost permanently to the encroaching sea.

World heritage site

Significant portions of Djerba’s cultural heritage have already been erased by sea-level rise and coastal erosion. Future losses could be even more severe. The island’s cultural heritage will only grow more precarious without meaningful preservation and climate adaptation efforts.

However, many of Djerba’s monuments, historical buildings and traditional dwellings have suffered from years of neglect. A chronic lack of local and international funding, as well as weak institutional frameworks for heritage management, mean some of the island’s historic structures have been abandoned. Many other buildings have deteriorated due to a lack of protective measures and maintenance.

Community organisations such as the Association for the Safeguarding of the Island of Djerba have tried to step in to fill the void left by weak institutional frameworks. Their work ranges from delivering public awareness campaigns to local young people to efforts like re-purposing ancient rainwater tanks to manage periods of drought.

But these grassroots efforts alone are not enough to stop Djerba’s cultural heritage from deteriorating at its current pace.

In September 2023, the UN Educational, Scientific and Cultural Organization (Unesco) announced that it was adding Djerba to its list of world heritage sites. Tunisia’s culture ministry welcomed the decision. It followed years of efforts by local groups and government officials to add Djerba to the list.

Djerba’s inclusion offers hope for the long-term preservation of the island’s heritage. A world heritage site designation increases global recognition and enables improved access to sources of funding.

And since Djerba’s classification, there has been some progress. The culture ministry has established a task force to monitor the construction of buildings and other infrastructure, collect data on designated protected areas, and prepare projects to preserve heritage sites.

But Djerba’s cultural heritage remains in danger. Improved preservation of these sites will require continuous funding and stringent regulation of tourism and construction activities.

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

– ref. Popular Tunisian island’s cultural heritage at risk due to tourism, neglect and climate change – https://theconversation.com/popular-tunisian-islands-cultural-heritage-at-risk-due-to-tourism-neglect-and-climate-change-223612

Source: The Conversation – UK – By Felicia Liu, Lecturer (Assistant Professor) in Sustainability, University of York

Throughout history, people have viewed seasons as relatively stable, recurrent blocks of time that neatly align farming, cultural celebrations and routines with nature’s cycles. But the seasons as we know them are changing. Human activity is rapidly transforming the Earth, and once reliable seasonal patterns are becoming unfamiliar.

In our recent study, we argue that new seasons are surfacing. These emergent seasons are entirely novel and anthropogenic (in other words, made by humans).

Examples include “haze seasons” in the northern and equatorial nations of south-east Asia, when the sky is filled with smoke for several weeks. This is caused by widespread burning of vegetation to clear forests and make way for agriculture during particularly dry times of year.

Or there is the annual “trash season”, during which tidal patterns bring plastic to the shores of Bali, Indonesia, between November and March.

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At the same time, some seasons are disappearing altogether, with profound consequences for ecosystems and cultures. These extinct seasons can encompass drastically altered or terminated migratory animal behaviour, such as the decline of seabird breeding seasons in northern England.

Climate change is also calling time on traditional winter sport seasons by making snow scarcer in alpine regions.

Nature’s new rhythms

Perhaps more common are “syncopated seasons”. The changes are akin to new emphases on beats or off-beats in familiar music that capture the listener’s attention.

Syncopated seasons include hotter summers and milder winters in temperate climates, with increasingly frequent and severe extreme weather that exposes more people and ecosystems to stress.

The timings of key seasonal events, like when leaves fall or certain migratory species arrive, are becoming more unpredictable. We coined the term “arrhythmic seasons”, a concept borrowed from cardiology, to refer to abnormal rhythms which include earlier springs or breeding seasons, longer summers or growing seasons, and shorter winters or hibernating seasons.

Changing seasonal patterns throw the interdependent life cycles of plants and animals out of sync with each other, and disrupt the communities that are economically, socially and culturally dependent on them.

In northern Thailand, human activity has reshaped nature’s rhythms and affected the supply of water and food in turn. Communities along the Mekong river’s tributaries have relied on the seasonal flow of rivers to fish and farm for generations.

At first, upstream dams disrupted these cycles by blocking fish migration and preventing the accumulation of sediment that farms need for soil. More recently, climate change has shifted rainfall patterns and made dry seasons longer and rainy seasons shorter but more intense, bringing fires and further uncertainty to farmers.

Let’s rethink time

How we react to changing seasonal patterns can either worsen or improve environmental conditions. In south-east Asia, public awareness of the “haze season” has led to better forecasting, the installation of air filters in homes and the establishment of public health initiatives.

These efforts help communities adapt. But if society only uses adaptive fixes like these, it can make the haze worse over time by failing to tackle its root causes. By recognising this new season, societies might normalise the recurrence of haze and isolate anyone who demands the government and businesses deal with deforestation and burning.

Powerful institutions like these shape narratives about seasonal crises to minimise their responsibility and shift blame elsewhere. Understanding these dynamics is crucial to fostering accountability and ensuring fair responses.

The shifting seasons require us to rethink our relationship with time and the environment. Today, most of us think about time in terms of days, hours and minutes, which is a globalised standard used everywhere from smartphones to train timetables. But this way of keeping time forgets older and more local ways of understanding time – those that are shaped by natural rhythms, such as the arrival of the rainy season, or solar and lunar cycles, rooted in the lives and cultures of different communities.

Diverse perspectives, especially those from Indigenous knowledge systems, can enhance our ability to respond to environmental changes. Integrating alternative time-keeping methods into mainstream practices could foster fairer and more effective solutions to environmental problems.

Seasons are more than just divisions of time – they connect us with nature. Finding synchrony with changing seasonal rhythms is essential for building a sustainable future.

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

– ref. Farewell to summer? ‘Haze’ and ‘trash’ among Earth’s new seasons as climate change and pollution play havoc – https://theconversation.com/farewell-to-summer-haze-and-trash-among-earths-new-seasons-as-climate-change-and-pollution-play-havoc-260765

Source: The Conversation – UK – By Arun Vivian Holden, Emeritus Professor of Computational Biology, University of Leeds

As plans for missions to Mars accelerate, so do questions about how the human body might cope. A return trip to the red planet would give more than enough time for someone to become pregnant and even give birth. But could a pregnancy be conceived and carried safely in space? And what would happen to a baby born far from Earth?

Most of us rarely consider the risks we survived before birth. For instance, about two thirds of human embryos do not live long enough to be born, with most losses happening in the first few weeks after fertilisation; often before a person even knows they’re pregnant. These early, unnoticed losses usually happen when an embryo either fails to develop properly or to implant successfully in the wall of the womb.

Pregnancy can be understood as a chain of biological milestones. Each one must happen in the right order and each has a certain chance of success. On Earth, these odds can be estimated using clinical research and biological models. My latest research explores how these same stages might be affected by the extreme conditions of interplanetary space.

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Microgravity, the near-weightlessness experienced during spaceflight, would make conception more physically awkward but probably wouldn’t interfere much with staying pregnant once the embryo has implanted.

However, giving birth, and looking after a newborn, would be far more difficult in zero gravity. After all, in space, nothing stays still. Fluids float. So do people. That makes delivering a baby and caring for one a much messier and more complicated process than on Earth, where gravity helps with everything from positioning to feeding.

At the same time, the developing foetus already grows in something like microgravity. It floats in neutrally buoyant amniotic fluid inside the womb, cushioned and suspended. In fact, astronauts train for spacewalks in water tanks designed to mimic weightlessness. In that sense, the womb is already a microgravity simulator.

But gravity is only part of the picture.

Radiation

Outside Earth’s protective layers, there’s a more dangerous threat: cosmic rays. These are high-energy particles – “stripped-down” or “bare” atomic nuclei – that race through space at nearly the speed of light. They’re atoms that have lost all their electrons, leaving just the dense core of protons and neutrons. When these bare nuclei collide with the human body, they can cause serious cellular damage.

Here on Earth, we’re protected from most cosmic radiation by the planet’s thick atmosphere and, depending on the time of day, tens of thousands to millions of miles of coverage from the Earth’s magnetic field. In space, that shielding disappears.

When a cosmic ray passes through the human body, it may strike an atom, strip its electrons, and smash into its nucleus, knocking out protons and neutrons and leaving behind a different element or isotope. This can cause extremely localised damage – meaning that individual cells, or parts of cells, are destroyed while the rest of the body might remain unaffected. Sometimes the ray passes right through without hitting anything. But if it hits DNA, it can cause mutations that increase the risk of cancer.

Even when cells survive, radiation can trigger inflammatory responses. That means the immune system overreacts, releasing chemicals that can damage healthy tissue and disrupt organ function.

In the first few weeks of pregnancy, embryonic cells are rapidly dividing, moving, and forming early tissues and structures. For development to continue, the embryo must stay viable throughout this delicate process. The first month after fertilisation is the most vulnerable time.

A single hit from a high-energy cosmic ray at this stage could be lethal to the embryo. However, the embryo is very small – and cosmic rays, while dangerous, are relatively rare. So a direct hit is unlikely. If it did happen, it would probably result in an unnoticed miscarriage.

Pregnancy risks

As pregnancy progresses, the risks shift. Once the placental circulation – the blood flow system that connects mother and foetus – is fully formed by the end of the first trimester, the foetus and uterus grow rapidly.

That growth presents a larger target. A cosmic ray is now more likely to hit the uterine muscle, which could trigger contractions and potentially cause premature labour. And although neonatal intensive care has improved dramatically, the earlier a baby is born, the higher the risk of complications, particularly in space.

On Earth, pregnancy and childbirth already carry risks. In space, those risks are magnified – but not necessarily prohibitive.

But development doesn’t stop at birth. A baby born in space would continue growing in microgravity, which could interfere with postural reflexes and coordination. These are the instincts that help a baby learn to lift its head, sit up, crawl, and eventually walk: all movements that rely on gravity. Without that sense of “up” and “down,” these abilities might develop in very different ways.

And the radiation risk doesn’t go away. A baby’s brain continues to grow after birth, and prolonged exposure to cosmic rays could cause permanent damage – potentially affecting cognition, memory, behaviour and long-term health.

So, could a baby be born in space?

In theory, yes. But until we can protect embryos from radiation, prevent premature birth, and ensure babies can grow safely in microgravity, space pregnancy remains a high-risk experiment – one we’re not yet ready to try.

Arun Vivian Holden 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. Floating babies, cosmic radiation and zero-gravity birth: what space pregnancy might actually involve – https://theconversation.com/floating-babies-cosmic-radiation-and-zero-gravity-birth-what-space-pregnancy-might-actually-involve-261142

Source: The Conversation – UK – By Sarah Richmond, Honorary Associate Professor of Philosophy, UCL

With a few exceptions, philosophers have had little to say about clothes. Maybe this is because the topic seems frivolous, or feminine, unworthy of the attention of a predominantly male collection of thinkers.

Perhaps, too, the transience of fashion, and the fact that clothes belong – quite literally – to the domain of mere appearance, also has something to do with it. In A Philosopher Looks at Clothes, an engaging and informative book, Kate Moran, philosophy professor at Brandeis University in the US, urges us to think again.

As Moran points out, clothing looms large in life. Every day we dress, deciding how many layers to wear and whether we need a coat – or might a cardigan suffice? We gaze critically at other people’s choices (“OMG, those shoes!”). We wonder how to rise to the challenge of an imminent Eurovision-themed party.

From a historical point of view, also, our species-specific recourse to clothes stretches back to the earliest human society. In mythical time, it begins with Adam’s and Eve’s discovery, in shame, that they were naked. If fashion is transient, clothes, per se, are not.

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Clothes, Moran tells us, serve three basic purposes: protection, modesty and decoration. At once, these introduce questions of deep philosophical interest. Are the purposes equally important? Why, throughout human history, have we refused to settle merely for protection, desiring for example that a hat should be of some favoured colour or shape? To what extent do our decorative choices express our personal identity? Do clothes ever qualify as works of art? Why is modesty an abiding concern, given that we all know the contours of the unclothed body?

In many contexts, and especially today, clothes invite ethical and political assessment. Clothes communicate a great deal of information about us, including our social position and the causes we espouse.

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Read more:
A brief history of the slogan T-shirt

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We may knowingly exploit this, choosing to flaunt an obviously expensive garment or to wear our football team’s scarf. In other cases the meanings are imposed. The uniforms forced on prisoners, for example, emphasise subordination and erase their individuality.

Poignantly, research into textile history has uncovered a streak of resistance in even the most ill-treated captives. In concentration camps during the second world war some prisoners altered their uniforms, or mended them, or added pockets. As Moran remarks, these actions were not just practical; their aim, too, was to “recover some sense of identity and dignity”.

In the brilliantly conceived series by Cambridge University Press to which this title belongs, each author discusses some general topic from a perspective that is philosophically informed and at the same time personal.

We need more books like these, to counteract the entrenched pretence of disinterestedness in philosophy. (Nietzsche, exceptionally, saw through it, denouncing philosophers as “advocates who do not want to be seen as such … sly spokesmen for prejudices that they christen as ‘truths’”.)

Knowledge of the significance, in an author’s life, of her subject-matter enriches the reader’s imaginative experience of a book. Describing herself as an “ardent hobbyist” who sews her own clothes, Moran provides an additional facet to her account of today’s fashion industry and its scandalous environmental costs.

The reader knows that Moran herself has found an alternative. This lends a certain authority to her judgement that, however futile it may seem for any one person to step off the fast-fashion bus: “There is an important moral difference between being inefficacious and being innocent.”

Moran shows how many areas of philosophy can illuminate the phenomenon of clothes: not only ethics and political thought, but also aesthetics, theories of communication, of personal identity, of gender and cultural appropriation.

For readers unfamiliar with academic philosophy, these forays offer a path into a rich conceptual landscape. Along the way, we are offered a multitude of riveting facts. Who would have guessed that pink has not always been for girls, and blue for boys? And there are pictures, too. My highlight was the “revenge dress” that Princess Diana wore to a gala dinner in the midst of hostilities with Charles, in a successful bid to divert press attention from his appearance on TV.

This article features references to books that have been included for editorial reasons, and may contain links to bookshop.org. If you click on one of the links and go on to buy something from bookshop.org The Conversation UK may earn a commission.

Sarah Richmond 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. A Philosopher Looks at Clothes by Kate Moran is engaging and unpretentious – we need more philosophy books like this – https://theconversation.com/a-philosopher-looks-at-clothes-by-kate-moran-is-engaging-and-unpretentious-we-need-more-philosophy-books-like-this-260473

Source: The Conversation – UK – By Alastair Culham, Associate Professor of Botany, University of Reading

With hosepipe bans in force across several English regions and more restrictions likely to follow, gardeners face some tough choices. When every drop counts, which plants deserve your precious water from the water butt, and which should you leave to fend for themselves?

As someone who has researched how British gardeners need to adapt to respond to our changing climate, I can tell you that not all garden plants are created equal when it comes to water needs. Some plants will bounce back from a summer scorching, while others may never recover.

Top plants to prioritise for watering

1. New woody plants

Any woody plant installed in the last 12-18 months should be your absolute priority. These haven’t yet developed the deep root systems needed to find moisture reserves and going without enough water the first year or so after planting could kill them.

Water thoroughly and add a deep mulch of wood chips to help the soil hold water. For young trees you can install a watering bag around the trunk but you still need to top it up.

2. Hydrangeas

Hydrangeas adopt a conservative strategy when it comes to drought. They shut their stomata (leaf pores) rapidly when they sense dry soil, and keep them closed until consistent moisture returns. They often drop their leaves too.

This can mean many weeks without growth, after even a relatively short drought period. So if you want to keep them looking at their best, they need consistent watering. You can cut growth back to reduce water loss, and save the the plant at the cost of flowers.

3. Moisture loving trees

Japanese maples (Acer palmatum), along with other moisture-loving trees like birch and beech, are prone to serious die-back during summer droughts. Their shallow root systems and large leaves make them particularly vulnerable to water stress. Water and mulch them.

4. Soft herbaceous plants

Astilbe, dicentra, filipendula, heuchera, primula, trollius and many other soft herbaceous plants require good moisture levels and may not survive prolonged drought.

5. Shallow-rooted shrubs

Rhododendrons and azaleas are shallow-rooted shrubs particularly susceptible to drought stress, especially the large-leaved evergreen species which are also prone to wind damage when stressed.

6. Clematis

Many clematis varieties struggle with drought. Since they’re often grown for their spectacular flowering displays, maintaining adequate moisture around the roots is crucial, especially for autumn-flowering varieties, or spring-flowering varieties which flower on the previous year’s growth.

A gravel mulch can help keep the roots cool and damp. However, clematis orientalis, terniflora, and evergreens such as C. cirrhosa can be surprisingly tolerant of a hot dry period.

7. Ripening vegetables

If you’re growing vegetables, prioritise crops approaching harvest and those that split when moisture returns after drought, such as carrots. Runner beans and courgettes need moist soil to keep cropping and potato yields are heavily influenced by water levels.

8. All the pots

Anything in pots has limited access to soil moisture reserves and will need regular attention. Move containers to shadier spots if possible. Always use a pot saucer to hold water and prevent it draining away.

Plants that can survive without extra water

Research into plant water-stress shows that many common garden plants are surprisingly resilient.

Forsythia adopts a risk-taking strategy. It keeps growing and photosynthesising even when soil moisture becomes limited, gambling that it can regrow after damage. This makes it remarkably drought-tolerant. It is also tolerant of heavy pruning which can save it in severe conditions.

Mediterranean shrubs like lavender, rosemary, sage and thyme are naturally adapted to dry conditions. Their grey, hairy or waxy leaves are evolved to conserve moisture. Soil conditions are crucial though. If the plants are deep rooted they will draw water up, but if your soil is shallow or compacted they might well be less drought tolerant.

Sedums, sempervivums and other succulents store water in their fleshy leaves and can survive extended dry periods. RHS research identifies Sedum spectabile as particularly reliable under stress.

Ornamental grasses generally have efficient root systems and many species actually prefer drier conditions once established.

Established shrubs including cistus, phlomis, buddleja, cotoneaster, berberis and viburnum have deep roots and proven track records for drought survival. The RHS report identifies these as garden stalwarts, with high stress resilience.

Some trees, including eucalyptus, bay (Laurus nobilis) and holm oak are remarkably drought tolerant.

Those to sacrifice

Grass lawns are thirsty and can be left to go dormant. If you have a newly seeded or turfed lawn from this year, some limited watering may be justified. But in general, embrace the golden colour of water-stressed lawns. As long as you don’t create too many bare patches from over-use, the green colour and growth will come back when it rains.

Annual bedding plants like busy lizzies and begonias have shallow root systems and high water demands. However, they are only there for one season and are easily replaceable, so prioritise them for watering only if they’re particularly important to your garden’s summer display and you can spare the water. You could save some by potting them up and enjoying a display that needs less water.

When you do water, research shows that technique is crucial. Water thoroughly but less frequently to encourage deep root growth. Focus water at the base of plants rather than on leaves, and water in early morning or evening to reduce evaporation.

Consider “split-root” watering for established shrubs – water one side of the plant thoroughly, then switch to the other side two to three weeks later. This keeps plants hydrated while chemical signals from the dry side’s roots prevent excessive new growth that would increase water demands.

This drought is a taste of Britain’s gardening future. The plants struggling most in this year’s drought are likely to become increasingly unsuitable for British gardens without intensive irrigation.

Be willing to swap out plants that suffer in drought for new plants that are more tolerant. Refresh plantings to adapt to the new climate.

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This article features references to books that have been included for editorial reasons, and may contain links to bookshop.org. If you click on one of the links and go on to buy something from bookshop.org The Conversation UK may earn a commission.

Alastair Culham is affiliated with the Royal Horticultural Society through the RHS Science & Collections Group as a voluntary member. Opinions expressed here are his and do not represent the RHS.

– ref. Hosepipe ban survival guide: which garden plants to save and which to sacrifice – https://theconversation.com/hosepipe-ban-survival-guide-which-garden-plants-to-save-and-which-to-sacrifice-261603