Connie Francis was the voice of a generation and the soundtrack of post-war America

Source: The Conversation – Global Perspectives – By Leigh Carriage, Senior Lecturer in Music, Southern Cross University

Hulton Archive/Getty Images

Connie Francis dominated the music charts in the late 1950s and early 1960s with hits like Stupid Cupid, Pretty Little Baby and Don’t Break the Heart That Loves You.

The pop star, author and actor has died at 87, and will be remembered for recording the soundtrack songs of post-World War II America.

Francis sitting on a kayak in a one-piece swimsuit.
Francis photographed around 1963.
Silver Screen Collection/Getty Images

An early life of music

Francis was born Concetta Rosa Maria Franconero in Newark, New Jersey, to Italian immigrant parents. At a very early age, Francis was encouraged to take accordion and singing lessons, compete in talent shows, and later she would perform occasionally on the children’s production Star Time Kids on NBC, remaining there until she was 17.

Within these early recordings you can hear her style begin to develop: her tone, great pitching, her versatility in vocal range. Her vocal delivery is technically controlled and stylistically structured, often nuanced – and even at this early stage demonstrating such power coupled with an adaptability for a broad range of repertoire.

At 17, Francis signed a contract with MGM Records.

One of her early recordings was the song Who’s Sorry Now?, written by Ted Snyder with lyrics by Bert Kalmar and Harry Ruby in 1923. Her version was released in 1957 and struggled to get noticed.

The following year, Francis appeared with the ballad on American Bandstand. This performance exposed Francis’ talent for interpretation and her ability to bridge the teen and adult fanbase.

The song would become a hit.

It’s useful to listen to the original version to gain more insight into Francis’ vocal approach and styling. The original is an instrumental song of its time, with light whimsical call and response motives in a foxtrot feel.

But in Francis’ version, she demonstrates her ability to revitalise a late 1950s pop music aesthetic. In an emotional delivery she croons her own rendition, with the country styling elements of Patsy Cline.

Black and white photo, Francis at the microphone.
Connie Francis performing in Milan in 1961.
Universal Archive/Universal Images Group via Getty Images

The voice of a generation

Following Who’s Sorry Now?, Stupid Cupid (1958), Where The Boys Are (1960, the titular song of a feature film starring Francis) and Lipstick on Your Collar (1959) became the soundtrack songs of post-war America.

Francis was supported with songs penned by the some of the best songwriters from the Brill Building, a creative collective in Manhattan that housed professional songwriters, working with staff writers Edna Lewis and George Goehring.

In 1960, Francis released her hit Everybody’s Somebody’s Fool written by Jack Keller and Howard Greenfield. It was a teeny-bopper classic, and she became the first women to top the Billboard Hot 100.

The pair look at each other, holding sheet music.
Francis records in the studio with Freddy Quinn at MGM in 1963 in New York.
PoPsie Randolph/Michael Ochs Archives/Getty Images

Styled after some of the other greats of the time – such as Frank Sinatra (1915–98), Dean Martin (1917–95) and Louis Prima (1910–70) – Francis’ performance on the Ed Sullivan show highlighted her connection to her Italian heritage and ability to draw from a broad repertoire.

On the show, she performed Mama and La Paloma. Each performance is very carefully styled, a thoughtful approach to dynamics, sung in both English and Italian.

Don’t Break the Heart That Loves You, a number one hit from 1962, features Francis’ gorgeous crooning harmonies. Then, the song breaks down into an earnest spoken part and finishes with a powerful belted vocal part of long notes.

The song is full of confidence and hope.

Away from the microphone

Francis had two key roles in films, starring in Where the Boys Are (1960) and the comedy Follow the Boys (1963).

She was an author of two books. The second, Who’s Sorry Now?, became a New York Times bestseller.

Francis was involved with humanitarian causes. She was particularly involved with Women Against Rape, following her own violent rape in 1974, and the Valour Victims Assistance Legal Organisation, dedicated to supporting the legal rights of crime victims. A lesser known song in her repertoire, fitting to include here, is her version of Born Free from 1968.

As a singer, Francis worked at her craft and transitioned effortlessly from one genre to another, performing for over five decades. She will be remembered as a trailblazing solo artist, leaving a strong legacy in popular music culture.

She was the voice of one generation when she was a star. And in her final year she became the voice of a new generation as Pretty Little Baby, released in 1962, went viral on TikTok, with more than 1.4 million videos using her voice to share stories of their lives.

Francis in black, a band behind her on stage.
Francis performs in Atlantic City, New Jersey, in 2009.
Bobby Bank/WireImage

The Conversation

Leigh Carriage 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. Connie Francis was the voice of a generation and the soundtrack of post-war America – https://theconversation.com/connie-francis-was-the-voice-of-a-generation-and-the-soundtrack-of-post-war-america-261467

Chimamanda’s Lagos homecoming wasn’t just a book launch, it was a cultural moment

Source: The Conversation – Global Perspectives – By Tinashe Mushakavanhu, Assistant Professor, Harvard University

When the announcement of Chimamanda Adichie Ngozi’s latest novel Dream Count was made, it was regarded as a major event in African literature. The internationally celebrated Nigerian writer had not published a novel in the past 12 years, and her long-awaited return stirred both anticipation and speculation. In the post-COVID context in which the book comes, so much has changed in the world.

The first leg of her three city homecoming book tour coincided with my stay in Lagos as a curatorial fellow at Guest Artist Space Foundation, dedicated to facilitating cultural exchange and supporting creative practices. After Lagos, Chimamanda took the tour to Nigeria’s capital city Abuja and finally Enugu, where she was born and grew up.




Read more:
Chimamanda Ngozi Adichie’s new book Dream Count explores love in all its complicated messiness


As a scholar of African literature, I arrived here in search of literary Lagos. But my attachment to the city may also just be romantic, a nostalgia born out of years of reading about it in fiction. No doubt, Lagos is a city of imagination and creativity.

Chimamanda’s book event was a reminder that literary celebrity, when it happens in Africa, can exist on its own terms. It’s rooted in a popular imaginary that embraces both the writer and the spectacle.

Lagos superstar

The launch in Lagos took place at a conference centre on the evening of Friday 27 June. The MUSON is a multipurpose civic auditorium located in the centre of Lagos Island which can accommodate up to 1,000 guests. And on this night, the auditorium was packed.

When I arrive, the scene outside is buzzing. A crowd gathers in front of a large canvas banner bearing a radiant image of the author. It’s more than just decoration; it’s a backdrop. It is an occasion for the selfie, a digital marker that you were there. There is even a hashtag for this: #dreamcountlagos. People take turns posing in front of it, curating their presence in the frame of Chimamanda’s aura.

The atmosphere is festive, electric. And yet beneath the surface shimmer is something more urgent: a hunger for story, for presence, for return. Perhaps that explains why people come not just to witness, but to be counted.

Inside the lobby, piles of Chimamanda’s books are neatly arranged on long tables. People are not just buying a copy. They are buying several in the hope that the author will autograph them. The sight is striking, almost surreal. In many parts of the continent, a book launch is often a quiet affair. Writers are lucky to sell a handful of copies. But this is something else entirely. This is not just a book launch, it is a cultural moment.

It would have been easy to mistake the event for a political townhall. There was a VIP section reserved for the who’s who of Lagos, but those class distinctions easily dissolved into the collective energy of the room. The auditorium was filled with genuine enthusiasm.

Even after a delay of more than an hour, when Chimamanda finally walked in, she was met with rapturous applause. She wore a bright yellow dress, an Instagrammable outfit, suited for the many fans who rushed forward to take selfies with her. Chimamanda, no doubt, is as much a fashion icon as she is a literary figure.

On stage, she was joined by media personality Ebuka Obi-Uchendu, widely known as the host of the reality TV show Big Brother Africa. But here, he was also something more intimate: the author’s friend. Chimamanda even credited him with being a “great reader”. This is a rare compliment in a literary world that often separates celebrity from critical engagement.

Their conversation was relaxed and full of laughter, offering the audience both intimacy and insight. Chimamanda addressed the question that had lingered for years: her decade-long silence. She spoke candidly of writer’s block, of the grief that came with losing both her parents in quick succession, and how that loss eventually reignited her desire to write.

Dream Count, she explained, is shaped by that rupture. It is one of the major post-COVID novels from Africa, and centres on the lives of four women. It is a book about love, friendship and independence.

Africans do read

When she spoke about her characters on stage, it was as though she was talking about relatives that the audience recognised. They responded by shouting out the characters’ names, to the delight of the author.

When I asked people about the launch afterwards, many said that it was a very Nigerian event – big, colourful, exuberant, festive. It was indeed a celebration that felt communal, even joyous. It was also a public demonstration of how literature can still command space and attention, not just in private reading rooms or crammed bookstores, but on a civic scale.




Read more:
Lagos fashion: how designers make global trends uniquely Nigerian


This was a remarkable event because it defied the tired cliché that Africans do not read. People, mostly young, came out in their hundreds. They bought books, they took selfies with their “favourite” author, they screamed the names of fictional characters as though greeting friends.

But more significant was Chimamanda’s choice to work with a local publisher, Narrative Landscape Press, which produced the Nigerian edition of Dream Count that is now available and accessible locally, at the same time as its release in Europe and North America. That alone is a radical act.

In returning to Nigeria to launch her book, Chimamanda also disrupts the assumption that African literary prestige must only be validated abroad. Even though she belongs to a cohort of African writers shaped by the diaspora, she actively insists on presence – on homecoming – not as simply nostalgia, but as active engagement.

Of course, Chimamanda is an exception. Her stature as a global literary figure, combined with her deep connection to home, allows her to move between worlds with remarkable ease. Few writers command the kind of multigenerational, cross-class attention she does. I found myself wishing though that more book launches could carry this same sense of occasion, of meaning, of return. That they could gather people in such numbers, not just to celebrate the writer, but to affirm the African book as something still worth gathering for.

And perhaps that is what made this book launch unforgettable: not just the celebrity or the spectacle, but the sense that literature still matters here, and that it belongs to the people.

The Conversation

Tinashe Mushakavanhu 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. Chimamanda’s Lagos homecoming wasn’t just a book launch, it was a cultural moment – https://theconversation.com/chimamandas-lagos-homecoming-wasnt-just-a-book-launch-it-was-a-cultural-moment-261112

Trump has ‘chronic venous insufficiency’. Is it dangerous? Can it be treated?

Source: The Conversation – Global Perspectives – By Theresa Larkin, Associate Professor of Medical Sciences, University of Wollongong

Anna Moneymaker/Staff/Getty

US President Donald Trump has been diagnosed with “chronic venous insufficiency” after experiencing some mild swelling in his lower legs.

According to a letter the White House published from the president’s doctor, the condition is common and not harmful, and the 79-year-old “remains in excellent health”.

But what is chronic venous insufficiency? What causes it, and can it lead to other health problems? Let’s take a look.

A disease of the veins

Veins are the blood vessels that carry de-oxygenated blood from all parts of the body to the heart.

Chronic venous insufficiency is a disease of the veins and mostly affects the legs.

When someone has this condition, it becomes more difficult for the blood to flow back to the heart. In other words, blood pools in the legs, rather than travelling up easily through the legs, pelvis and abdomen to the heart.

Blood pooling in the legs creates increased pressure in the veins in the legs and feet. This can cause swelling (called oedema), skin discolouration, varicose veins, and even skin ulcers (the skin stretches because of the increased pressure and becomes weak and can tear).

What causes chronic venous insufficiency?

There are several potential causes of chronic venous insufficiency, including damaged valves inside the veins in the legs.

When we’re standing, blood has to flow back to the heart from the legs against gravity. Veins have valves inside them which ensure this one-way flow and stop blood from running back the wrong way.

When valves in the veins – either the deeper veins or those closer to the skin’s surface – are damaged, this allows blood to flow backwards and pool in the legs.

Damage to the inside lining of the vein wall can also cause chronic venous insufficiency. When the lining is damaged, it becomes less smooth and blood cells can stick to the wall and build up. This can block the inside of the vein and impede the return of blood to the heart. Smoking is a major cause of this, though it also happens naturally with age.

Physical compression of a vein in the pelvis from the outside can also be a factor. Pregnancy, obesity or a tumour can push on a pelvic vein from the outside. This makes it harder for blood to flow through that vein, which causes back up of blood in the veins of the leg.

Deep vein thrombosis (DVT) also increases the risk of chronic venous insufficiency. This is where blood clots form in the deep veins, most commonly in the legs. It can block blood flow or damage the vein wall, and increase blood pooling further down the leg.

In a study I did with colleagues looking at people with chronic venous insufficiency, about 10% had a previous deep vein thrombosis. However, Trump’s doctor said there was no evidence of deep vein thrombosis in his case.

Who gets it?

The data on how many people get chronic venous insufficiency vary, but it is relatively common. In the United States, an estimated 10% to 35% of adults have the condition.

A number of factors increase a person’s likelihood of developing chronic venous insufficiency. Smoking and having previously had a deep vein thrombosis are strongly linked to this condition. Other risk factors include older age, pregnancy, obesity, and prolonged periods of standing still.

Is it dangerous?

On its own, chronic venous insufficiency is not life-threatening, but it is a progressive condition. It increases the risk of other conditions which can be more serious.

Interestingly, while deep vein thrombosis increases the risk of chronic venous insufficiency, people with chronic venous insufficiency also have a higher risk of deep vein thrombosis. This is because pooled blood doesn’t move as much, so it can start to form a clot.

Deep vein thrombosis then increases the risk of pulmonary embolism, blood clots in the lungs, which are life threatening.

In the legs, the most serious consequence of chronic venous insufficiency is developing a venous ulcer. Venous ulcers can be painful, are prone to infection (such as cellulitis), and have a high rate of recurring.

Research has shown 4% of adults aged 65 and older in the US develop venous ulcers as a result of chronic venous insufficiency.

Can it be treated?

Whether and how chronic venous insufficiency can be treated depends somewhat on the cause.

Initial conservative treatment usually involves elevating the legs and wearing compression stockings. Elevating the legs higher than the body means gravity will help blood flow back to the heart. Compression stockings help to push blood from the leg veins towards the heart.

Exercise such as walking also helps because when the muscles in the legs contract, this moves more blood from the legs back to the heart. Exercise and diet changes may also be recommended to address any weight-related issues.

In more progressive or severe cases, surgery may be needed to fix the inside of the veins, remove any underlying deep vein thrombosis, or insert a stent in the case of a vein compression.

Overall, Trump has been diagnosed with a common condition for someone of his age, and his doctors have ruled out severe underlying disease. But this is a reminder of the importance of healthy veins and of the risk factors for venous disease.

The Conversation

Theresa Larkin 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. Trump has ‘chronic venous insufficiency’. Is it dangerous? Can it be treated? – https://theconversation.com/trump-has-chronic-venous-insufficiency-is-it-dangerous-can-it-be-treated-261460

Bonnets, speech bubbles and ‘cheeky easter eggs’: a graphic biography of Jane Austen is subtly sophisticated

Source: The Conversation – Global Perspectives – By Kerrie Davies, Senior Lecturer, School of the Arts & Media, UNSW Sydney

Isabel Greenberg, Hachette

This year is the 250th anniversary of Jane Austen’s birth and she hasn’t aged a bit as the cultural touchstone of classy romance. Her Pride and Prejudice anti-hero, Mr Darcy, perennially pops up in his breeches in Instagram memes, while Regency feminist, Elizabeth Bennet has been brought to life by a host of contemporary actors.

Along with new screen versions of Austen’s Sense and Sensibility (starring Daisy Edgar-Jones) and a Netflix version of P & P, there have been adaptations of her classics Persuasion, Emma, Northanger Abbey, and Mansfield Park. And, there are numerous biographies and biopics including a TV drama about Jane’s sister, Cassandra, who burnt most of Jane’s letters.


Review: The Novel Life of Jane Austen: A Graphic Biography –
Janine Barchas, Isabel Greenberg (Hachette)


Now, there is also a graphic biography: The Novel Life of Jane Austen, written by Janine Barchas and illustrated by Isabel Greenberg.

Together, they have co-created a storyboard for the domestic life that framed Austen’s writing, encompassing her closeness to both Cassandra and her brother Frank, who joined the navy and liked to sew.

Unlike a “cradle to grave” biography, Barchas begins with a teenage Jane in London with Frank touring an exhibition about Shakespeare and his work. We then follow her, in illustrative comic boxes and speech bubbles, through her publishing rejections, her breakthrough debut Sense and Sensibility, and her rise to become one of most beloved writers in the canon of English literature.

The book ends beyond the grave, flashing forward to the present, in a scene where contemporary fans – Janeites – visit Jane Austen’s House, the cottage in Hampshire where Austen lived when she revised and published her six novels.

It’s also a sign of subtle structural polish. Now Jane Austen is as deserving of her own gallery as Shakespeare was when we first met Jane as a young, unpublished author.

Thinking in pink

Barchas – an “Austenite”, as Austen scholars are called – is the author of The Lost Books of Jane Austen, a study of the mass market editions of Austen’s work. (The Novel Life touches on Austen’s posthumous appeal with a scene where readers buy Austen books for one shilling at a railway station after her death, aged 41.)

Barchas also wrote Matters of Fact in Jane Austen: History, Location and Celebrity, which links Austen’s characters to well known locations and figures in her era.

Cover of The Novel Life of Jane Austen

Isabel Greenberg

Barchas is the co-creator of the interactive digital exhibition, What Jane Saw, which invites us to visit two art exhibitions witnessed by Jane Austen: the Sir Joshua Reynolds retrospective in 1813 or the Shakespeare Gallery as it looked in 1796. The Novel Life, however, is a more definitive life story. It’s also best read in print (although it is available as an e-book) to appreciate Greenberg’s illustrations and graphic format.

The Novel Life is a gentler, less dramatic style than traditional comics with six-pack superheroes or Japanese manga, similar to Greenberg’s previous literary graphic biography foray, Glass Town, about the Bronte sisters.

For the Novel Life, Greenberg has drawn a world in which Austen is whimsical, with expressive eyes looming under her signature bangs. She and her sister Cassandra appear in bright yellow or blue empire line dresses.

Most scenes are illustrated in a muted palette of yellow, blue and grey. This palette, Barchas reflects in the preface, represents “the relative quiet of her (Austen’s) life”.

When Jane is thinking or writing however, the pages transform into vivid shades of pink to symbolise her imagination and inspiration. In these pages, The Novel Life is at its best, showing graphic biography can be both captivating and deceptively sophisticated.

Archival nods

Is a graphic biography really a biography in the conventional understanding of the genre? It can upset the perceived rules. Anticipating this, in the preface, Barchas reminds us:

Any biography of Austen, and there are many, exists at the intersection of speculation and research.

This book is at this intersection. While the dialogue is largely invented, it is grounded in Barchas’ expertise and there is a glossary of sources at the end.

Throughout, there are also nods to the archive. Barchas begins with a scene of Jane in 1796 writing a letter to Cassandra at a desk while staying in London – one of the few not burnt.

A speech bubble quotes an extract from it:

Here I am once more in this scene of dissipation and vice, and I begin already to find my morals corrupted.

There are also Post-it style notes, separate to the bubbles, offering extra biographical context for readers less familiar with the intricacies of Austen’s story. A key scene happens when Jane, 22, receives her first rejection by a publisher for her manuscript “First Impressions” and is comforted by the loyal Cassandra. The note reads:

Jane would carry out more than a decade and a half of revisions before she dared to offer the manuscript to another publisher, who released it in 1813 as Pride and Prejudice.

Because of their visual casualness, importantly the notes don’t interfere with the intimate, engaging tone of the story.

‘Easter eggs’

For Austen’s committed “Janeite” fan base, Barchas promises “cheeky easter eggs” in the preface. Janeites can delight in well-quoted lines from the novels that appear as dialogue or a character’s thoughts.

Look, for instance, for Jane reading at a dinner party from P & P: “It’s a truth universally acknowledged […]” and “she is tolerable but not handsome enough to tempt me […]”.

It’s a truth universally acknowledged too that graphic biography can be confused with the graphic novel, now the third most popular literary genre in sales after general fiction and romance.

But, dear reader, there’s a tradition of life writing in the medium. The Pulitzer Prize winning graphic biography/memoir, The Complete Maus, told Art Spiegelman’s father’s story of the Holocaust to his son, (Art) who struggled to understand his father. Maus portrayed Jewish people anthropomorphically as mice and Nazis as cats. It was described by The New Yorker “as the first masterpiece of comic book history”.

Other high points in graphic biography include Peter Bagge’s Woman Rebel, the story of birth control campaigner Margaret Sanger, published in 2013.

Not everyone will appreciate a work diverging so dramatically from the expectations of a traditional biography. And those who will most appreciate or scrutinise The Novel Life are yes, the Janeites and Austenites.

Regardless, Austen comes to graphic life in the mind and hands of Barchas and Greenberg. More generally, for those of us who like our biographies in vivid colour – literally – and enjoy experiments in nonfiction storytelling, it’s a delightful reading experience, just like Jane Austen.

The Conversation

Kerrie Davies 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. Bonnets, speech bubbles and ‘cheeky easter eggs’: a graphic biography of Jane Austen is subtly sophisticated – https://theconversation.com/bonnets-speech-bubbles-and-cheeky-easter-eggs-a-graphic-biography-of-jane-austen-is-subtly-sophisticated-257558

AI is now part of our world. Uni graduates should know how to use it responsibly

Source: The Conversation – Global Perspectives – By Rachel Fitzgerald, Associate Professor and Deputy Associate Dean (Academic), Faculty of Business, Economics and Law, The University of Queensland

MTStock Studio/ Getty Images

Artificial intelligence is rapidly becoming an everyday part of lives. Many of us use it without even realising, whether it be writing emails, finding a new TV show or managing smart devices in our homes.

It is also increasingly used in many professional contexts – from helping with recruitment to supporting health diagnoses and monitoring students’ progress in school.

But apart from a handful of computing-focused and other STEM programs, most Australian university students do not receive formal tuition in how to use AI critically, ethically or responsibly.

Here’s why this is a problem and what we can do instead.

AI use in unis so far

A growing number of Australian universities now allow students to use AI in certain assessments, provided the use is appropriately acknowledged.

But this does not teach students how these tools work or what responsible use involves.

Using AI is not as simple as typing questions into a chat function. There are widely recognised ethical issues around its use including bias and misinformation. Understanding these is essential for students to use AI responsibly in their working lives.

So all students should graduate with a basic understanding of AI, its limitations, the role of human judgement and what responsible use looks like in their particular field.

We need students to be aware of bias in AI systems. This includes how their own biases could shape how they use the AI (the questions they ask and how they interpret its output), alongside an understanding of the broader ethical implications of AI use.

For example, does the data and the AI tool protect people’s privacy? Has the AI made a mistake? And if so, whose responsibility is that?

What about AI ethics?

The technical side of AI is covered in many STEM degrees. These degrees, along with philosophy and psychology disciplines, may also examine ethical questions around AI. But these issues are not a part of mainstream university education.

This is a concern. When future lawyers use predictive AI to draft contracts, or business graduates use AI for hiring or marketing, they will need skills in ethical reasoning.

Ethical issues in these scenarios could include unfair bias, like AI recommending candidates based on gender or race. It could include issues relating to a lack of transparency, such as not knowing how an AI system made a legal decision. Students need to be able to spot and question these risks before they cause harm.

In healthcare, AI tools are already supporting diagnosis, patient triage and treatment decisions.

As AI becomes increasingly embedded in professional life, the cost of uncritical use also scales up, from biased outcomes to real-world harm.

For example, if a teacher relies on AI carelessly to draft a lesson plan, students might learn a version of history that is biased or just plain wrong. A lawyer who over-relies on AI could submit a flawed court document, putting their client’s case at risk.

How can we do this?

There are international examples we can follow. The University of Texas at Austin and University of Edinburgh both offer programs in ethics and AI. However, both of these are currently targeted at graduate students. The University of Texas program is focused on teaching STEM students about AI ethics, whereas the University of Edinburgh’s program has a broader, interdiscplinary focus.

Implementing AI ethics in Australian universities will require thoughtful curriculum reform. That means building interdisciplinary teaching teams that combine expertise from technology, law, ethics and the social sciences. It also means thinking seriously about how we engage students with this content through core modules, graduate capabilities or even mandatory training.

It will also require investment in academic staff development and new teaching resources that make these concepts accessible and relevant to different disciplines.

Government support is essential. Targeted grants, clear national policy direction, and nationally shared teaching resources could accelerate the shift. Policymakers could consider positioning universities as “ethical AI hubs”. This aligns with the government-commissioned 2024 Australian University Accord report, which called for building capacity to meet the demands of the digital era.

Today’s students are tomorrow’s decision-makers. If they don’t understand the risks of AI and its potential for error, bias or threats to privacy, we will all bear the consequences. Universities have a public responsibility to ensure graduates know how to use AI responsibly and understand why their choices matter.

The Conversation

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. AI is now part of our world. Uni graduates should know how to use it responsibly – https://theconversation.com/ai-is-now-part-of-our-world-uni-graduates-should-know-how-to-use-it-responsibly-261273

‘Don’t tell me!’ Why some people love spoilers – and others will run a mile

Source: The Conversation – Global Perspectives – By Anjum Naweed, Professor of Human Factors, CQUniversity Australia

DreamBig/Shutterstock, The Conversation

This article contains spoilers!

I once leapt out of a train carriage because two strangers were loudly discussing the ending of the last Harry Potter book. Okay – I didn’t leap, but I did plug my ears and flee to another carriage.

Recently, I found myself in a similar predicament, trapped on a bus, entirely at the mercy of two passengers dissecting the Severance season two finale.

But not everyone shares my spoiler anxiety. I have friends who flip to the last page of a book before they’ve read the first one, or who look up the ending before hitting play. According to them, they simply need to know.

So why do some of us crave surprise and suspense, while others find comfort in instant resolution?

What’s in a spoiler?

Spoilers have become a cultural flashpoint in the age of streaming, social media and shared fandoms.

Researchers define “spoiler” as undesired information about how a narrative’s arc will conclude. I often hear “spoilers!” interjected mid-sentence, a desperate protest to protect narrative ignorance.

Hitchcock’s twist-heavy Psycho elevated spoiler sensitivity. Its release came with an anti-spoilers policy including strict viewing times, lobby warnings recorded by the auteur himself, and even real policemen urging “total enjoyment”. A bold ad campaign implored audiences against “cheating yourselves”.

The twists were fiercely protected.

Even the Star Wars cast didn’t know Darth Vader’s paternity twist until premiere night. Avenger’s Endgame filmed multiple endings and used fake scripting to mislead its stars. And Andrew Garfield flat-out lied about his return to Spider-Man: No Way Home – a performance worthy of an Oscar – all for the sake of fan surprise and enjoyment.

But do spoilers actually ruin the fun, or just shift how we experience it?

The satisfaction of a good ending

In 2014, a Dutch study found that viewers of unspoiled stories experienced greater emotional arousal and enjoyment. Spoilers may complete our “mental models” of the plot, making us less driven to engage, process events, or savour the unfolding story.

But we are also likely to overestimate the negative effect of a spoiler on our enjoyment. In 2016, a series of studies involving short stories, mystery fiction and films found that spoiled participants still reported high levels of enjoyment – because once we’re immersed, emotional connection tends to eclipse what we already know.

But suspense and enjoyment are complex bedfellows.

American media psychology trailblazer Dolf Zillmann said that suspense builds tension and excitement, but we only enjoy that tension once the ending lands well.

The thrill isn’t fun while we’re hanging in uncertainty – it’s the satisfying resolution that retroactively makes it feel good.

That could be why we scramble for an “ending explained” when a film or show drops the ball on closure. We’re trying to resolve uncertainty and settle our emotions.

Spoilers can also take the pressure off. A 2009 study of Lost fans found those who looked up how an episode would end actually enjoyed it more. The researchers found it reduced cognitive pressure, and gave them more room to reflect and soak in the story.

Spoilers put the audience back in the driver’s seat – even if filmmakers would rather keep hold of the wheel. People may seek spoilers out of curiosity or impatience, but sometimes it’s a quiet rebellion: a way to push back against the control creators hold over when and how things unfold.

That’s why spoilers are fertile ground for power dynamics. Ethicists even liken being spoiled to kind of moral trespass: how dare someone else make that decision for me?!

But whether you avoid spoilers or seek them out, the motive is often the same: a need to feel in control.

Shaping your emotions

Spoiler avoiders crave affect: they want emotional transportation.

When suspense is part of the pleasure, control means choosing when and how that knowledge lands. There’s a mental challenge to be had in riding the story as it unfolds, and a joy in seeing it click into place.

That’s why people get protective, and even chatter about long-aired shows can spark outrage. It’s an attempt to police the commentary and preserve the experience for those still waiting to be transported.

Spoiler seekers want control too, just a different kind. They’re not avoiding emotion, they’re just managing it. A spoiler affords control over our negative emotions, but also softens the blow, and inoculates us against anxiety.

Psychologists dub this a “non-cognitive desensitisation strategy” to manage surprise, a kind of “emotional spoiler shield” to protect our attachments to shows and characters, and remind us that TV, film and book narratives are not real when storylines hit close to home.

Knowing what happens turns into a subtle form of self-regulation.

So, what did I do when Severance spoilers floated by? Did I get off the bus? Nope, I stayed put and faced the beast. As I tried to make sense of the unfamiliar plot points (The macrodata means what? Mark stays where?), I found the unexpected chance to dive deeper.

Maybe surprise is not the sum of what makes something entertaining and worth engaging with. Spoiler alert! It’s good to have an end to journey towards, but it’s the journey that matters, in the end.

The Conversation

Anjum Naweed 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. ‘Don’t tell me!’ Why some people love spoilers – and others will run a mile – https://theconversation.com/dont-tell-me-why-some-people-love-spoilers-and-others-will-run-a-mile-256803

Thinking of trekking to Everest Base Camp? Don’t leave home without this expert advice

Source: The Conversation – Global Perspectives – By Heike Schanzel, Professor of Social Sustainability in Tourism, Auckland University of Technology

Purnima Shrestha /AFP via Getty Images

Tourists in Kathmandu are tempted everywhere by advertisements for trekking expeditions to Everest Base Camp. If you didn’t know better, you might think it’s just a nice hike in the Nepalese countryside.

Typically the lower staging post for attempts on the summit, the camp is still 5,364 metres above sea level and a destination in its own right. Travel agencies say no prior experience is required, and all equipment will be provided. Social media, too, is filled with posts enticing potential trekkers to make the iconic journey.

But there is a real risk of creating a false sense of security. An exciting adventure can quickly turn into a struggle for survival, especially for novice mountaineers.

Nevertheless, Sagarmatha National Park is deservedly popular for its natural beauty and the allure of the world’s highest peak, Chomolungma (Mount Everest). It is also home to the ethnically distinctive Sherpa community.

Consequently, the routes to Everest Base Camp are among the busiest in the Himalayas, with nearly 60,000 tourists visiting the area each year. There are two distinct trekking seasons: spring (March to May) and autumn (September to October).

High mountains require everyone to be properly prepared. Events which under normal conditions might be a minor inconvenience can be magnified in such an environment and pose a serious risk.

Even at the start of the trek in Lukla (2,860m), one is exposed to factors that can directly or indirectly affect one’s health, especially altitude mountain sickness or unfamiliar bacteria.

We interviewed 24 trekkers in May this year, as well as 60 residents and business owners in May 2023, to explore some of the safety issues anyone considering heading to base camp should be aware of.

Life at high altitude

First, it’s vital to choose goals within one’s technical and physical capabilities. While the human body can adapt to altitudes of up to 5,300m, the potential risk of altitude mountain sickness can occur at only 2,500m – lower than Lukla.

Proper acclimatisation above 3,000m means ascending no more than 500m a day and resting every two to three days at the same altitude. The optimal (though rarely followed) approach is the “saw tooth system” of climbing during the day but descending to sleep at a lower level.

Residents of the Khumbu region (on the Nepalese side of Everest) are familiar with the problem of tourists not acclimatising, or not paying attention to their surroundings. As one hotel owner said, pointing to a trekker setting out:

He’s going uphill and it’s already late. It’s going to get dark and cold soon. He won’t make it to the next settlement. We have to report this to the authorities or go after him ourselves.

Inexperienced trekkers should hire a local guide. Several we interviewed had needed medical evacuation, including a woman in her mid-20s who had to leave base camp after one night. She found her guides – not locals – online. But they never checked her vital signs during the trek:

[The doctors] said that I had high-altitude pulmonary edema […] it was just really important to come down the elevation. And if I had tried to go higher, it probably would have been really bad.

Health checks throughout the trek are imperative. This includes assessing the four main symptoms of altitude mountain sickness: headache, nausea, dizziness and fatigue. If they appear, the trekker shouldn’t go higher and might even need to descend.

A Sherpa woman at the market in Namche Bazar, Nepal: respect the culture, eat local food.
Paula Bronstein/Getty Images

Take time to adapt

Using a reputable local trekking agency might be more expensive, but it will help ensure safety and also familiarise the visitor with the local culture, helping avoid negative impacts on the host community.

Too often, the primary goal of trekkers is a photo on the famous rock at base camp. Once obtained, many simply take a helicopter back to Kathmandu. As a helicopter tour agency owner said:

They don’t want to get back on their feet. The goal, after all, has been achieved. In general, tourists used to be much better prepared. Now they know they can return by helicopter.

Helicopter travel can be dangerous on its own, of course. But this tendency to view the trek as a one-way trip also affects host-guest relations and can irritate local communities.

It’s also important to monitor your food and drink intake and watch for signs of food poisoning. Diarrhoea at high altitudes is particularly dangerous because it leads to rapid dehydration – hard to combat in mountain conditions.

Low air pressure and reduced oxygen exacerbate the condition, weakening the body’s ability to recover. Also, the symptoms of dehydration can resemble altitude mountain sickness.

When travelling in other climate zones or countries with different sanitary standards, there is inevitable contact with strains of bacteria not present in one’s natural microbiome.

A good solution is to spend a few days naturally adapting to bacterial flora at a lower altitude in Nepal before heading to the mountains. Also, try to eat the local food, such as daal bhat, Nepal’s national dish. According to one hotel owner in Pangboche:

Tourists demand strange food from us – pizza, spaghetti, Caesar salad – and then are angry that it doesn’t taste the way they want. This is not our food. You should probably eat local food.

Most of the trekkers we interviewed during this spring season reported experiencing gastrointestinal issues, often for several days.

Overall, diarrhoea-related infections are the leading cause of illness among travellers, including base camp trekkers. Studies conducted in the Himalayas show as many as 14% of mountain tourists contract gastroenteritis, accounting for about 10% of all helicopter evacuations.

In the end, the commonest cause of failure or accident in the mountains is overestimating one’s abilities – what has been called “bad judgement syndrome” – when the route is too hard, the pace too fast, or there’s been too little time spent acclimatising.

A simple solution: walk slowly and enjoy the views.

The Conversation

Michal Apollo receives funding from the National Science Centre NCN Poland, the small-scale project awarded by the Institute of Earth Sciences, and the Research Excellence Initiative of the University of Silesia in Katowice. He is affiliated with the Global Justice Program, Yale University, and Academics Stand Against Poverty.

Heike Schanzel 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. Thinking of trekking to Everest Base Camp? Don’t leave home without this expert advice – https://theconversation.com/thinking-of-trekking-to-everest-base-camp-dont-leave-home-without-this-expert-advice-260497

Separated men are nearly 5 times more likely to take their lives than married men

Source: The Conversation – Global Perspectives – By Michael Wilson, Research Fellow and PhD Candidate in Men’s Mental Health, The University of Melbourne

Breakups hurt. Emotional and psychological distress are common when intimate relationships break down. For some people, this distress can be so overwhelming that it leads to suicidal thoughts and behaviours.

This problem seems especially the case for men. Intimate partner problems including breakups, separation and divorce feature in the paths to suicide among one in three Australian men aged 25 to 44 who end their lives.

Men account for three in every four suicides in many nations worldwide, including Australia. So improving our understanding of links between relationship breakdown and men’s suicide risk has life-saving potential.

Our research, published today, is the first large-scale review of the evidence to focus on understanding men’s risk of suicide after a breakup. We found separated men were nearly five times more likely to die by suicide compared to married men.

What did we find?

We brought together findings from 75 studies across 30 countries worldwide, involving more than 106 million men.

We focused on understanding why relationship breakdown can lead to suicide in men, and which men are most at risk. We might not be able to prevent breakups from happening, but we can promote healthy adjustment to the stress of relationship breakdown to try and prevent suicide.

Overall, we found divorced men were 2.8 times more likely to take their lives than married men.

For separated men, the risk was much higher. We found that separated men were 4.8 times more likely to die by suicide than married men.

Most strikingly, we found separated men under 35 years of age had nearly nine times greater odds of suicide than married men of the same age.

The short-term period after relationship breakdown therefore appears particularly risky for men’s mental health.

What are these men feeling?

Some men’s difficulties regulating the intense emotional stress of relationship breakdown can play a role in their suicide risk. For some men, the emotional pain tied to separation – deep sadness, shame, guilt, anxiety and loss – can be so intense it feels never-ending.

Many men are raised in a culture of masculinity that often encourages them to suppress or withdraw from their emotions in times of intense stress.

Some men also experience difficulties understanding or interpreting their emotions, which can create challenges in knowing how to respond to them.

Overall, our research found relationship breakdown may lead to suicide for some men because of the complex interaction between the individual (emotional distress) and interpersonal (changes in their social network and availability of support) impacts of a breakup.

Many of these impacts don’t seem to feature in the paths to suicide after a breakup for women in the same way.

Breakups also impact social networks

As intimate relationships become more serious, we tend to spend less time investing in our friendships, especially if juggling the demands of a career and family.

Many men, especially in heterosexual relationships, rely on their intimate partner as a primary source of social and emotional support – often at the expense of connections outside their relationship.

This can create a risky situation if relationships break down, as it seems many men are left with little support to turn to. This rang true in our research, as men’s social disconnection and loneliness seemed to increase their suicide risk following relationship breakdown.

We also know people can struggle to know how to support men after a breakup. Research has found some men who ask for support are told to just “get back on the horse”. Such a response invalidates men’s pain and reinforces masculine stereotypes that relationship breakdown doesn’t affect them.

So, what can we do?

There is no simple answer to preventing suicide following relationship breakdown, but a range of opportunities exist.

We can intervene early, by educating young people with the skills to end relationships healthily, handle rejection and regulate the difficult emotions of a breakup.

We can embed support groups and other opportunities for connection and peer support in relationship services that are regularly in contact with those navigating separation, to help combat loneliness.

We can ensure mental health practitioners are equipped with the skills necessary to engage and respond effectively to men who seek help following a breakup, to help keep them safe until they can get back on their feet.

Most importantly, if men come to any of us seeking support after a breakup, we can remember that time is often a great healer. The best we can do is sit with men in their pain, rather than try and get them to stop feeling it. This connection could be life-saving.

Support and information is available at Relationships Australia and MensLine Australia. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.

The Conversation

Michael Wilson works for The University of Melbourne and consults to Movember. He receives funding from the Australian Government Research Training Program Scholarship, provided by the Australian Commonwealth Government and the University of Melbourne.

Jacqui Macdonald receives funding from the National Health and Medical Research Council’s Medical Research Future Fund and the Australian Research Council. She convenes the Australian Fatherhood Research Consortium and she is on the Movember Global Men’s Health Advisory Committee.

Zac Seidler has been awarded an NHMRC Investigator Grant. He is also the Global Director of Research with the Movember Institute of Men’s Health. He advises government on men’s suicide, masculinities, violence prevention and social media policy.

ref. Separated men are nearly 5 times more likely to take their lives than married men – https://theconversation.com/separated-men-are-nearly-5-times-more-likely-to-take-their-lives-than-married-men-258196

Why do some autistic people walk differently?

Source: The Conversation – Global Perspectives – By Nicole Rinehart, Nicole Rinehart, Professor, Clinical Psychology, Director of the Neurodevelopment Program, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University

Autism is a neurodevelopmental condition that affects how people’s brains develop and function, impacting behaviour, communication and socialising. It can also involve differences in the way you move and walk – known as your “gait”.

Having an “odd gait” is now listed in the Diagnostic and Statistical Manual of Mental Disorders as a supporting diagnostic feature of autism.

What does this look like?

The most noticeable gait differences among autistic people are:

  • toe-walking, walking on the balls of the feet
  • in-toeing, walking with one or both feet turned inwards
  • out-toeing, walking with one or both feet turned out.

Research has also identified more subtle differences. A study summarising 30 years of research among autistic people reports that gait is characterised by:

  • walking more slowly
  • taking wider steps
  • spending longer in the “stance” phase, when the foot leaves the ground
  • taking more time to complete each step.

Autistic people show much more personal variability in the length and speed of their strides, as well as their walking speed.

Gait differences also tend to occur alongside other motor differences, such as issues with balance, coordination, postural stability and handwriting. Autistic people may need support for these other motor skills.

What causes gait differences?

These are largely due to differences in brain development, specifically in areas known as the basal ganglia and cerebellum.

The basal ganglia are broadly responsible for sequencing movement including through shifting posture. It ensures your gait appears effortless, smooth and automatic.

The cerebellum then uses visual and proprioceptive information (to sense the body’s position and movement) to adjust and time movements to maintain postural stability. It ensures movement is controlled and coordinated.

Graphic of the brain
Differences occur in the cerebellum and basal ganglia.
grayjay/Shutterstock

Developmental differences in these brain regions relate to the way the areas look (their structure), how they work (their function and activation) and how they “speak” to other areas of the brain (their connections).

While some researchers have suggested that autistic gait occurs due to delayed development, we now know gait differences persist across the lifespan. Some differences actually become clearer with age.

In addition to brain-based differences, the autistic gait is also associated with factors such as the person’s broader motor, language and cognitive capabilities.

People with more complex support needs might have more pronounced gait or motor differences, together with language and cognitive difficulties.

Motor dysregulation might indicate sensory or cognitive overload and be a useful marker that the person might benefit from extra support or a break.

How is it managed?

Not all differences need to be treated. Instead, clinicians take an individualised and goals-based approach.

Some autistic people might have subtle gait differences that are observable during testing. But if these differences don’t impact a person’s ability to participate in everyday life, they don’t require support.

An autistic person is likely to benefit from support for gait differences if they have a functional impact on their daily life. This might include:

  • increased risk of, or frequent, falls
  • difficulty participating in the physical activities they enjoy
  • physical consequences such as tightness of the Achilles and calf muscles, or associated pain in other areas, such as the feet or back.

Some children may also benefit from support for motor skill development. However this doesn’t have to occur in a clinic.

Given children spend a large portion of their time at school, programs that integrate opportunities for movement throughout the school day allow autistic children to develop motor skills outside of the clinic and alongside peers. We developed the Joy of Moving Program in Australia, for example, which gets students moving in the classroom.

Our community-based intervention studies show autistic children’s movement abilities can improve after engaging in community-based interventions, such as sports or dance.

Community-based support models empower autistic children to have agency in how they move, rather than seeing different ways of moving as a problem to be fixed.

Where to from here?

While we have learnt a lot about autistic gait at a broad level, researchers and clinicians are still seeking a better understanding of why and when individual variability occurs.

We’re also still determining how to best support individual movement styles, including among children as they develop.

However there is growing evidence that physical activity enhances social skills and behavioural regulation in preschool children with autism.

So it’s encouraging that states and territories are moving towards more community-based foundational supports for autistic children and their peers, as governments develop supports outside the National Disability Insurance Scheme (NDIS).

The authors thank the late Emeritus Professor John Bradshaw for his early input into this piece.

The Conversation

Nicole Rinehart receives funding from: Moose Happy Kids Foundation, MECCA M-Power, the Grace & Emilio Foundation, Ferrero Australia, as part of the global Kinder Joy of moving program, Aspen Pharmacare Australia Pty Ltd, Jonathan and Simone Wenig, Adam Krongold, the Grosman Family Foundation, the Shoreline Foundation, the Victorian Department of Education, the NSW Department of Education, and the Department of Social Services – Information, Linkages and Capacity Building (ILC) Program, and has worked in partnership with the Australian Football League.

Chloe Emonson works on projects that receive funding from: Moose Happy Kids Foundation, MECCA M-Power, the Grace & Emilio Foundation, Ferrero Australia, as part of the global Kinder Joy of moving program, Aspen Pharmacare Australia Pty Ltd, Jonathan and Simone Wenig, Adam Krongold, the Grosman Family Foundation, the Shoreline Foundation, the Victorian Department of Education, the NSW Department of Education, and the Department of Social Services – Information, Linkages and Capacity Building (ILC) Program, and has worked in partnership with the Australian Football League.

Ebony Lindor works on projects that receive funding from: Moose Happy Kids Foundation, MECCA M-Power, the Grace & Emilio Foundation, Ferrero Australia, as part of the global Kinder Joy of moving program, Aspen Pharmacare Australia Pty Ltd, Jonathan and Simone Wenig, Adam Krongold, the Grosman Family Foundation, the Shoreline Foundation, the Victorian Department of Education, the NSW Department of Education, and the Department of Social Services – Information, Linkages and Capacity Building (ILC) Program, and has worked in partnership with the Australian Football League.

ref. Why do some autistic people walk differently? – https://theconversation.com/why-do-some-autistic-people-walk-differently-231685

Scientists could be accidentally damaging fossils with a method we thought was safe

Source: The Conversation – Global Perspectives – By Mathieu Duval, Adjunct Senior Researcher at Griffith University and La Trobe University, and Ramón y Cajal (Senior) Research Fellow, Centro Nacional de Investigación sobre la Evolución Humana (CENIEH)

185,000-year-old human fossil jawbone from Misliya Cave, Israel. Gerhard Weber, University of Vienna, CC BY-ND

Fossils are invaluable archives of the past. They preserve details about living things from a few thousand to hundreds of millions of years ago.

Studying fossils can help us understand the evolution of species over time, and glimpse snapshots of past environments and climates. Fossils can also reveal the diets or migration patterns of long-gone species – including our own ancestors.

But when living things turn to rock, discerning those details is no easy feat. One common technique for studying fossils is micro-computerised tomography or micro-CT. It’s been used to find the earliest evidence of bone cancer in humans, to study brain imprints and inner ears in early hominins, and to study the teeth of the oldest human modern remains outside Africa, among many other examples.

However, our new study, published today in Radiocarbon, shows that despite being widely regarded as non-destructive, micro-CT may actually affect fossil preservation and erase some crucial information held inside.

Preserving precious specimens

Fossils are rare and fragile by nature. Scientists are constantly evaluating how to balance their impact on fossils with the need to study them.

When palaeontologists and palaeoanthropologists (who work on human fossils) analyse fossils, they want to minimise any potential damage. We want to preserve fossils for future generations as much as possible – and technology can be a huge help here.

Micro-CT works like the medical CT scans doctors use to peek inside the human body. However, it does so at a much smaller scale and at a greater resolution.

This is perfect for studying small objects such as fossils. With micro-CT, scientists can take high-resolution 3D images and access the inner structure of fossils without the need to cut them open.

These scans also allow for virtual copies of the fossils, which other scientists can then access from anywhere in the world. This significantly reduces the risk of damage, since the scanned fossils can safely remain in a museum collection, for example.

Micro-CT is popular and routinely used. The scientific community widely regards it as “non-destructive” because it doesn’t cause any visual damage – but it could still affect the fossil.

Jaw bone of the human fossil species Homo antecessor from Spain. Left: micro-CT scan with a cutting plane to visualise the inner structures, bone and teeth; right: 3D reconstruction based on the high-resolution micro-CT images.
Laura Martín-Francés

How does micro-CT imaging work?

Micro-CT scanning uses X-rays and computer software to produce high-resolution images and reconstruct the fossil specimens in detail. Typically, palaeontologists use commercial scanners for this, but more advanced investigations may use powerful X-ray beams generated at a synchrotron.

The X-rays go through the specimen and are captured by a detector on the other end. This allows for a very fine-grained understanding of the matter they’ve passed through – especially density, which then provides clues about the shape of the internal structures, the composition of the tissues, or any contamination.

The scan produces a succession of 2D images from all angles. Computer software is then used to “clean up” these high-resolution images and assemble them into a 3D shape – a virtual copy of the fossil and its inner structures.

Example of micro-CT results on a hominin fossil known as Little Foot, from southern Africa.

But X-rays are not harmless

X-rays are a type of ionising radiation. This means they have a high level of energy and can break electrons away from atoms (this is called ionisation).

In living tissue, ionising radiation can damage cells and DNA, although the level of damage will depend on the duration and intensity of exposure. X-rays and CT scans used in medicine generally have a very low risk since the exposure of the human body is reduced as much as possible.

However, despite what we know about the impact of X-rays on living cells, the potential impact of X-rays on fossils through micro-CT imaging has never been deeply investigated.

What did our study find?

Using standard settings on a typical micro-CT scanner, we scanned several modern and fossil bones and teeth from animals. We also measured their collagen content before and after scanning.

Collagen is useful for many analytical purposes, such as finding out the age of the fossils using radiocarbon dating, or for stable isotope analysis – a method used to infer the diet of the extinct species, for example. The collagen content in fossils is usually much lower than in modern specimens because it slowly breaks down over time.

After comparing our measurements with unscanned samples taken from the same specimens, we found two things.

First, the radiocarbon age remained unchanged. In other words, micro-CT scanning doesn’t affect radiocarbon dating. That’s the good news.

The bad news is that we did observe a significant decrease in the amount of collagen present. In other words, the micro-CT scanned samples had about 35% less collagen than the samples before scanning.

This shows micro-CT imaging has a non-negligible impact on fossils that contain collagen traces. While this was to be expected, the impact hasn’t been experimentally confirmed before.

It’s possible some fossil samples won’t have enough collagen left after micro-CT scanning. This would make them unsuitable for a range of analytical techniques, including radiocarbon dating.

What now?

In a previous study, we showed micro-CT can artificially “age” fossils later dated with a method called electron spin resonance. It’s commonly used to date fossils older than 50,000 years – beyond what the radiocarbon method can discern.

This previous study and our new work show that micro-CT scanning may significantly and irreversibly change the fossil and the information it holds.

Despite causing no visible damage to the fossil, we argue that in this context the technique should no longer be regarded as non-destructive.

Micro-CT imaging is highly valuable in palaeontology and palaeoanthropology, no doubt about that. But our results suggest it should be used sparingly to minimise how much fossils are exposed to X-rays. There are guidelines scientists can use to minimise damage. Freely sharing data to avoid repeated scans of the same specimen will be helpful, too.

The Conversation

Mathieu Duval receives funding from the Spanish State Research Agency (Agencia Estatal de Investigación). He is currently the recipient of a Ramón y Cajal fellowship (RYC2018-025221-I) funded by MCIN/AEI/10.13039/501100011033 and by ‘‘ESF Investing in your future”. This work is also part of Spanish Grant PID2021-123092NB-C22 funded by MCIN/AEI/10.13039/501100011033/FEDER, UE, and by ‘‘ERDF A way of making Europe”.

Laura Martín-Francés receives funding from Marie Sklodowska-Curie Actions of the EU Ninth programme (2021-2027) under the HORIZON-MSCA-2021-PF-01-Project: 101060482.

ref. Scientists could be accidentally damaging fossils with a method we thought was safe – https://theconversation.com/scientists-could-be-accidentally-damaging-fossils-with-a-method-we-thought-was-safe-258827