Comment le croisement des roses d’Orient et d’Occident au XIXᵉ siècle a totalement changé nos jardins

Source: The Conversation – in French – By Thibault Leroy, Biologiste, chercheur en génétique des populations, Inrae

Il existe aujourd’hui des dizaines de milliers d’espèces de roses. Fourni par l’auteur

En Europe, la rose a connu son âge d’or au XIXe siècle : en l’espace de quelques décennies, le nombre de variétés s’est envolé, passant d’environ 100 à près de 8000. Grâce à l’étude des caractéristiques de ces variétés et aux outils modernes de la génomique, nous venons de retracer l’histoire de cette évolution, marquée par d’importants croisements entre rosiers asiatiques et rosiers européens anciens. De ce mariage est née une diversité qui continue de façonner nos jardins contemporains.


Le XIXᵉ, un siècle rosomane

Depuis l’Antiquité, les roses sont cultivées, aussi bien en Chine que dans la région méditerranéenne, pour leurs vertus médicinales, notamment les propriétés anti-inflammatoires et antimicrobiennes des huiles essentielles ou comme sources de vitamine C dans les cynorrhodons (faux-fruits des rosiers), et pour leur forte charge symbolique, notamment religieuse. Pourtant, pendant des siècles, le nombre de variétés est resté très limité, autour d’une centaine. Le XIXe siècle marque un tournant majeur pour l’horticulture européenne avec une effervescence portée par un nouvel engouement pour l’esthétique des roses. Les collectionneurs – dont la figure la plus emblématique fut probablement l’impératrice Joséphine de Beauharnais– et les créateurs de nouvelles variétés français ont eu un rôle déterminant dans cet essor, donnant naissance à une véritable « rosomanie » et contribuant à une explosion du nombre de variétés, passant d’une centaine à près de 8000 variétés ! À titre de comparaison, depuis cette période, le nombre de variétés a certes continué de progresser, s’établissant à environ 30 000 variétés aujourd’hui, mais à un rythme de croissance moins soutenu.

Changements esthétiques des fleurs au cours du XIXᵉ siècle, sur la base d’un panel de variétés encore disponibles dans la roseraie de Thérèse Loubert (Gennes-Val-de-Loire, Maine-et-Loire), spécialisée en roses anciennes.
hibault Leroy, Fourni par l’auteur

Au-delà de l’augmentation du nombre de variétés, le XIXe siècle a été marqué par une grande diversification des caractéristiques des rosiers. Le nombre de pétales, notamment, est devenu un critère d’intérêt majeur. Les rosiers botaniques, des formes cultivées anciennes issues directement de la nature, ne possédaient en général que cinq pétales. Au fil du XIXe siècle, la sélection horticole a permis d’obtenir des variétés aux fleurs bien plus sophistiquées, certaines présentant plusieurs dizaines, voire des centaines de pétales. Cependant, cette évolution n’a pas suivi une progression linéaire : la première moitié du siècle a vu une nette augmentation du nombre de pétales, marquée par une mode des rosiers cent-feuilles, tandis que la seconde moitié a été plutôt caractérisée par une stagnation, voire un retour à des formes plus simples. Certaines variétés très travaillées sur le plan esthétique ont ainsi été sélectionnées pour paradoxalement n’avoir que cinq pétales.

Aquarelle d’un rosier cent-feuilles par Pierre-Joseph Redouté (1759-1840), familier de Joséphine de Beauharnais et célèbre pour ses planches botaniques, surtout de rosiers. Paradoxalement, le nom de cent-feuilles vient de leur grand nombre de pétales.
Pierre-Joseph Redouté, Fourni par l’auteur

La plus grande différence entre les rosiers du début et de la fin du XIXe réside dans un caractère fondamental : la remontée de floraison. Jusqu’au milieu du XIXe siècle, les rosiers étaient majoritairement non remontants, c’est-à-dire qu’ils ne fleurissaient qu’une seule fois par an, au printemps. La capacité des rosiers à refleurir, en générant de nouvelles fleurs au cours de l’été, voire même jusqu’à l’automne, n’est pas le fruit du hasard ! Cette caractéristique a constitué un objectif important des sélectionneurs de l’époque. Cette histoire, très associée aux croisements génétiques effectués, notamment avec des rosiers chinois, a laissé une empreinte durable, aussi bien dans nos jardins contemporains que dans les génomes mêmes des rosiers.

Bien qu’ils n’en étaient pas conscients, les sélectionneurs ont aussi pu contribuer à l’introduction de caractères défavorables. Ainsi, en étudiant les niveaux de symptômes de la maladie des taches noires sur des centaines de variétés du XIXe, nous avons mis en évidence une augmentation de la sensibilité des variétés. Cette maladie est aujourd’hui considérée comme une des premières causes de traitements phytosanitaires sur les rosiers, ce qui n’est pas sans poser des questions sanitaires sur l’exposition aux pesticides des fleuristes et autres professionnels du secteur horticole. Notre étude a néanmoins trouvé des régions génomiques associées à une résistance à cette maladie, offrant l’espoir d’une sélection vers des variétés nouvelles plus résistantes.

Notre étude n’a pas uniquement porté sur la prédisposition aux maladies mais également à l’une des caractéristiques les plus importantes des roses : leur odeur. Le parfum des roses est expliqué par un cocktail complexe de molécules odorantes. Deux molécules sont néanmoins très importantes dans ce qu’on appelle l’odeur de rose ancienne, le géraniol et le 2-phényléthanol. Nous avons étudié le parfum de centaines de variétés et observé une très forte variabilité de celui-ci, autant en teneur qu’en composition. Nos résultats ne soutiennent toutefois pas, ou alors extrêmement marginalement, une réduction du parfum des roses au cours du XIXe siècle. La perte de parfum est vraisemblablement arrivée ultérieurement, au cours du XXe siècle, une période qui voit l’apparition d’une activité de création variétale spécifique pour les roses à fleurs coupées et qui aurait négligé le parfum des roses au profit de la durée de tenue en vase, permettant de délocaliser la production dans des pays aux coûts de production réduits.

Des rosiers aux génomes métissés

Pour mieux comprendre l’origine et la diversité de ces rosiers du XIXe, il faut désormais plonger dans l’univers de l’infiniment petit : celui de leurs génomes. Dans notre nouvelle étude, nous avons entrepris de caractériser en détail la génétique de plus de 200 variétés, en nous appuyant sur des dizaines de milliers de marqueurs, c’est-à-dire d’une information ciblée sur des zones particulières des génomes, connues comme étant variables selon les variétés, et ce, répartis sur l’ensemble de leurs chromosomes. Pour une trentaine de variétés, nous sommes allés encore plus loin, en décryptant l’intégralité de leur génome, fournissant non plus des dizaines de milliers, mais des dizaines de millions de marqueurs, ouvrant ainsi une fenêtre encore plus précise sur l’histoire génétique des rosiers. A noter que le mode de conservation nous a facilité la tâche pour étudier l’ADN de ces rosiers historiques directement à partir des plantes actuelles conservées en roseraie. En effet, grâce au greffage, les variétés de rosiers sont potentiellement immortelles !

Grâce à cette analyse, nous avons d’abord pu confirmer les résultats d’études antérieures qui, bien que fondées sur un nombre limité de marqueurs génétiques, avaient déjà mis en évidence que la diversification des rosiers du XIXe siècle résultait de croisements successifs entre rosiers anciens européens et rosiers asiatiques. La haute résolution offerte par la génomique nous a toutefois permis d’aller plus loin : nous avons montré que cette diversité s’est construite en réalité sur un nombre très réduit de générations de croisements, impliquant de manière récurrente des variétés phares de l’époque, utilisées comme parents dans de nombreux croisements. Il est remarquable de noter que cela s’est produit avec une bonne dose de hasard (via la pollinisation) puisque la fécondation artificielle (choix des deux parents du croisement) n’est utilisée sur le rosier qu’à partir du milieu du XIXᵉ siècle.

Bien que reposant sur un nombre limité de générations de croisements, contribuant à un métissage entre rosiers asiatiques et européens, notre étude a également permis de montrer que les rosiers possèdent une importante diversité génétique. Toutefois, la sélection menée au cours du XIXe siècle a contribué à une légère érosion de cette diversité, en particulier chez les variétés issues de la fin du siècle. Or, le maintien d’une large diversité génétique est essentiel pour la résilience et l’adaptation des espèces face aux changements environnementaux. Sa préservation au long cours représente donc un enjeu majeur. Tant que les anciennes variétés sont conservées, cette perte reste réversible. Il est donc crucial d’agir pour éviter leur disparition définitive en préservant les collections de roses anciennes et botaniques.

À l’échelle du génome complet, la sélection tend à réduire la diversité génétique. Mais à une échelle plus fine, ses effets peuvent être encore plus marqués, entraînant une diminution locale beaucoup plus prononcée de la diversité. Notre étude a ainsi révélé qu’une région du chromosome 3, contenant différentes formes d’un gène clé impliqué dans la remontée de la floraison, a fait l’objet d’une sélection particulièrement intense au XIXe siècle. Ce résultat, bien que prévisible compte tenu de l’importance de ce caractère, a été confirmé de manière claire à la lumière des données génomiques. De manière plus inattendue, nous avons également identifié d’autres régions du génome présentant des signatures similaires de sélection, notamment sur les chromosomes 1, 5 et 7. À ce stade, les gènes concernés, et les éventuels caractères morphologiques associés restent encore à identifier. Malgré les avancées de la génomique, le mariage des roses d’Occident et d’Orient au XIXe siècle garde encore nombre de ses secrets de famille !

The Conversation

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

ref. Comment le croisement des roses d’Orient et d’Occident au XIXᵉ siècle a totalement changé nos jardins – https://theconversation.com/comment-le-croisement-des-roses-dorient-et-doccident-au-xix-siecle-a-totalement-change-nos-jardins-263157

How Nollywood films help Kenyan housemaids make sense of their lives

Source: The Conversation – Africa – By Solomon Waliaula, Associate Professor, Department of Languages, Linguistics and Culture, Maasai Mara University

Nollywood, Nigeria’s prolific video-film industry, has been popular in Kenya since it was introduced to east Africa at around the turn of the century.

These low-budget, high-output films and TV series immediately struck a chord with ordinary people in lower income brackets. Although new Nollywood productions can be slick, high budget affairs, the bulk are not about high production values. They’re about real-life stories and social issues that are easy to relate to.

At first Nollywood films were screened in informal video-halls in poorer Kenyan communities, offering a unique going-to-the-movies experience. But in the first decade of the new millennium, TV stations began screening them. In Kenya, Nollywood was most popularly known as “Afrocinema” on TV, and it was soon a daily affair.




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One of the audiences that has emerged are young women, often in their teens, working in urban Kenyan homes. Known as housemaids, they come from humble and materially deprived backgrounds and occupy a precarious position in the homes they work in. Their daily routine is a blend of domestic chores including childcare, cooking, cleaning and running errands for the family.

Employed through an informal system of social networking and patronage, housemaids don’t necessarily bring any training or experience to their jobs and generally aren’t offered employment contracts. The power is in the hands of the employer and there is little job security.

These young women were the subject of my recent study in the Kenyan city of Eldoret for the book Contemporary African Screen Worlds.

I explored the housemaid’s fandom of Nollywood films, as part of a decade-long study of electronic media audiences in the city.

It became clear that housemaids saw themselves as socially inferior to the families they worked for. Their identity as domestic labourers masked their identity as real people. Their social identity was defined by, and reducible to, their daily job card.

I found that they developed a special relationship with Nollywood cinema. This love of the movies (fandom) offered much more than leisure and companionship. Nollywood stories are a medium through which they could transcend the limits of their situations and aspire to other, more desirable worlds. Nollywood on TV helped them make sense of their lives.

The research

Twelve participants took part in the study, most of them housemaids, some former housemaids. All were drawn from similar neighbourhoods. Research mostly involved observing their working lives along with in-depth, unstructured interviews.

To establish some of the specific lessons the housemaids of Eldoret learnt from Nollywood, I asked each to discuss any two films that they considered as educational. I noted that there were some significant patterns.

The lessons raised were connected to the housemaids’ immediate life experiences, and many of the films mentioned seemed to explore the social impacts of poverty, and how it affects family relationships. The social costs of poverty on the family is a popular Nollywood theme.

Another kind of story that appealed to participants was the Cinderella tale. In these films, the orphaned girl living in abject poverty eventually becomes a princess.




Read more:
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Dina recalled a film that told the story of a poor woman whose father died and his extended family kicked her and her mother out. They moved to a slum. It so happened that she was actually destined to be a princess, but her father died before telling her the news. Her paternal grandmother eventually tracked her down, to link her up with her prince.

Most of the housemaids I’ve talked to over the years have clearly expressed their admiration for this Cinderella narrative in Nollywood stories. They can project themselves into her situation and use her experience as a source of hope for a better future.

Real life stories

But there were many other ways that housemaid fans of Nollywood said they saw their real lives in the films. One told me:

I used to watch films that presented young women who underwent life experiences that were like mine. But within the stories, their lives turned round, yet mine did not…

But then things changed:

I had reached the very end of my tether when God turned my life around. I met a man in church that proposed to me and we got married two months later. This is when I looked back and realised God had used Nollywood to prepare me for my portion.

She added:

The very first Nollywood film I watched was about a married couple who stayed with the wife’s mother, who ended up taking over her daughter’s husband. But the wife was a prayerful woman, and she consulted her pastor to intercede for their marriage as well. It worked.

True to Nollywood’s often melodramatic form, the mother became mentally deranged, drank a poisonous concoction and died.

I remember many other Nollywood stories that had been about the virtue of patience and waiting for God’s time.

In her case, Nollywood had helped her face her situation for what it was, and, in her view, it helped to keep her positive.

Why this matters

An exploration of the housemaids’ own understanding and use of Nollywood cinema becomes a medium through which to engage with the housemaids’ world – as well as their aspirational identities.

This is a social category of people that occupies a place of absolute subservience and has been forced by circumstances to live invisibly. Electronic media fandom is one of the few avenues where they can momentarily rise above their immediate circumstances.




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The routine nature of the housemaids’ lives, coupled with limited social interaction and the pressures of long working hours, is a danger to mental health. For them Nollywood fandom served as a healthy antidote.

The Conversation

Solomon Waliaula received funding from the International European Research Council as a contributor to the book Contemporary African Screen Worlds: Decolonizing Film and Screen Studies (2019-2025).

ref. How Nollywood films help Kenyan housemaids make sense of their lives – https://theconversation.com/how-nollywood-films-help-kenyan-housemaids-make-sense-of-their-lives-262059

Enslaved Africans, an uprising and an ancient farming system in Iraq: study sheds light on timelines

Source: The Conversation – Africa – By Peter J. Brown, Honorary Fellow in Archaeology, Durham University

Written accounts tell the story of the Zanj rebellion – a slave revolt that took place in the late 9th century in southern Iraq. Some of the rebels were enslaved Africans working in various sectors of the local economy.

Thousands of ridges and canals still stand today across a floodplain in southern Iraq. They’ve long been believed to be the remains of a massive agricultural system built by these enslaved people. Creating them, and farming here, could have been what drove the rebellion that’s often thought to have led to the rapid decline of the historic city of Basra and the local economy.

For the first time, our archaeological study offers a firmer timeline for when farming occurred across this landscape. This also allows an insight into how the Zanj rebellion affected the region.

We dated four of the 7,000 abandoned ridge features which cover a large swathe of the Shatt al-Arab floodplain, attesting to a period of agricultural expansion.

Our study finds that this agricultural system was in use for far longer than was previously assumed, calling into question the impact of the rebellion on farming and the local economy.

Our findings enhance our knowledge of the landscape history of southern Iraq and draw attention to the historical significance of landscape features which have often been overlooked.

The secret of the abandoned ridges

Abandoned and eroding earthworks litter the floodplain of the Shatt al-Arab – the river forming at the confluence of the Tigris and Euphrates. This flows through southern Iraq out into the Gulf and the Indian Ocean.

Most noticeably, groups of massive, raised, linear ridge features, some of which extend for over a kilometre, are arranged in regular formations. Among these features, the remains of dried-up canals and smaller, adjoining, secondary water channels can be traced.




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Today, agriculture in the floodplain is restricted to the band roughly within 5km of the river. But the abandoned features relate to farming in the past across a much larger area. While we don’t know exactly what was grown, cereals like barley or wheat, dates or sugarcane are the most likely crops.

Accounts from travellers who visited the area, as well as historical maps, indicate that the modern agricultural pattern has existed, essentially unchanged, at least since the 17th century. So, the features we see in the landscape today must have been constructed, in use, and abandoned in an earlier period.

New scientific evidence for the dating of these features helps us to understand when this occurred and the historical circumstances around this phase of agricultural expansion.

In 2022, we excavated small trenches into the top of four of the ridges. This allowed us to extract soil samples from their cores. Using a method called optically stimulated luminescence dating, individual grains of soil could be analysed. This allows the length of time since these grains were exposed to sunlight to be calculated. As our samples came from inside the ridge features, where they would have been permanently hidden from the sun, these samples should give the date when the soil was originally deposited.

The Zanj rebellion

Until now, no significant fieldwork had been carried out to investigate these features. However, these traces of pre-modern farming have often been linked with one particular historical episode – but without concrete evidence. Documents from the early Islamic period (from about the mid 7th to mid 13th century) provide a detailed account of a slave revolt in southern Iraq during the late 9th century, between 869 and 883.

The Zanj Rebellion saw large groups of slaves rebel against the forces of the Abbasid Caliphate – which ruled most of the Islamic world. The rebellion included violent episodes, including the sacking of the nearby city of Basra and clashes with the forces of the caliph sent to suppress the revolt. This threw southern Iraq into turmoil.

An illustration of a ship with African men captive, some boarding boats as men in tunics try to control them and another ship approaches.
An Arab slave ship in the Red Sea in the 1500s or 1600s.
New York Public Library

The identity of the Zanj people involved in the uprising has been a focus for debate. “Zanj” is an Arabic term used throughout the medieval period to refer to the Swahili coast of east Africa, though it was also used to refer to Africa more generally. As a result, the Zanj have typically been regarded collectively as enslaved people transported to southern Iraq from east Africa.

While the evidence for slaving traffic between Africa and Iraq during the early Islamic period is uncontroversial, the scale of the trade has been questioned. Based on genetic evidence, and the logistics of shipping large numbers to the Gulf, it has been argued that the majority of African slaves at the time of the revolt came from west and western central Africa via Saharan trade routes, rather than coastal east Africa. Importantly, the people involved in the revolt were not all African slaves – some seem to have been local farmers – so the rebels were a mixed group.

We know little about what the group known as the Zanj were doing before the 869 revolt. Their presence in Iraq is documented for centuries beforehand – smaller scale rebellions occurred in the late 7th century but only a few details are available about the lives of the slaves before the 9th century rebellion.

Some were involved in tasks like transporting flour. Others were dispersed in groups of 50-500 in work camps across the floodplain. Details relating to life within these camps are unavailable yet the written sources suggest the slaves were treated poorly by the “agents” who oversaw them. Other than for agriculture, it’s difficult to explain why such camps would have existed across this zone.

What we know about the Zanj fits closely with the scale of the landscape features visible today. Large numbers of labourers would have been needed, both to transport the soil forming the raised ridges and to farm the areas in between. This must have been enormously difficult work.

Unanswered questions

It’s often been assumed that the Zanj rebellion caused a significant decline in the region’s economy, including activities like farming. Our results, however, indicate that the earthworks date to the period after the rebellion.

While some samples date to the period immediately after the rebellion, others gave dates from a century or two later, in the 11th, 12th or 13th centuries. Rather than features created in one go, these traces in the landscape were likely added to over a longer period – perhaps as part of the annual farming cycle.

This means the samples we dated likely do not relate to the earliest farming activity but provide a “snapshot” of ongoing work. Since some of the features date to shortly after the rebellion, the slaves discussed in the written sources were likely involved in creating these ridge features. However, farming across this landscape certainly continued for a significant period after the revolt’s conclusion.




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Be it climatic change, the impact of a pandemic, or wider economic and political shifts, exactly why such a large area of farmland was later abandoned remains an unanswered question. One which requires further research to answer.

But, by more definitively linking these landscape features to their historical context, we are one step closer to understanding social and economic processes in southern Iraq during the medieval period.

Archaeology adds another dimension to what we know about a historical event like the Zanj rebellion.

The Conversation

Peter J. Brown receives funding from the Gerda Henkel Stiftung.

ref. Enslaved Africans, an uprising and an ancient farming system in Iraq: study sheds light on timelines – https://theconversation.com/enslaved-africans-an-uprising-and-an-ancient-farming-system-in-iraq-study-sheds-light-on-timelines-262977

Grandparenting from a distance: what’s lost when families are separated, and how to bridge the gap

Source: The Conversation – Africa – By Sulette Ferreira, Transnational Family Specialist and Researcher, University of Johannesburg

Becoming a grandparent is often envisioned as a deeply intimate, hands-on journey, holding a newborn, sharing first smiles, witnessing the first wobbly steps. It is traditionally grounded in physical presence, marked by spontaneous visits.

For many grandparents whose children have emigrated, however, these defining moments often unfold not in person, but through screens, filtered through time zones, digital platforms, and a lingering sense of distance.

This is true in South Africa, a country with rising emigration, especially among young families. Over a million South Africans now live abroad. This has systemic, multigenerational effects.

In a recent study I explored the impact of global emigration on the relationships between South African grandparents and their grandchildren born abroad. I examined what it means to step into their grandparent role role from afar, often for the first time, and how the absence of physical closeness reshapes intergenerational relationships.

I have published various articles on migration and intergenerational relationships in transnational families. I also run a private practice that focuses on the emotional challenges of emigration.

As part of my PhD study, I conducted in-depth interviews with 24 South African parents whose adult children had emigrated. This project laid the foundation for my broader research programme on the emotional effects of migration. This research article is based on the experiences of 44 participants.

For these grandparents, emigration represents more than just geographical separation. The familiar rhythms of hands-on grandparenting, from spontaneous visits to shared celebrations, are disrupted. With it comes a layered and ongoing sense of loss, not only of everyday interactions with their grandchildren, but also the gradual fading of a cherished role once grounded in physical presence and routine connection.

The findings show that the absence of physical proximity creates profound emotional barriers, especially during the early, most formative years of a grandchild’s life. Yet despite this distance, grandparents are finding creative and meaningful ways to remain emotionally present.

In transnational families, grandparents serve as custodians of cultural continuity and emotional support as well as active agents reshaping the meaning of grandparenthood in the context of global migration.

What grandparents had to say

The central question of my research was how distance reshaped the role of some grandparents in South African families. It further investigated how grandparents adapted and renegotiated their roles across different stages of their grandchildren’s lives.

The selection criteria included: being a South African citizen; speaking fluent English; living in South Africa; being a parent whose adult child(ren) had emigrated and lived abroad for at least one year; and being from any race, culture, gender; socio-economic status; aged between 50 and 80 years.

I supplemented interviews with qualitative surveys distributed via my online support group.

Grandparents reported various challenges,such as the loss of everyday involvement, the emotional strain of distance, and difficulties with digital communication that required ongoing adaptive strategies to sustain connection.

The study shows how distance does not necessarily weaken intergenerational bonds but requires grandparents to redefine presence.

My research made it clear that the place of birth is a pivotal factor in shaping the grandparent-
grandchild bond.

Grandparents of children who are born in South Africa and move to another country later are often involved from the beginning. They assist with daily care, celebrate milestones and enjoy spontaneous visits. These everyday interactions nurture strong emotional ties.

As Annelise, a participant, shared:

When your grandchild is born here, you know them from birth, you see them every day, you share in everything.

When these grandchildren emigrate, the rupture can be profound. Grandparents not only lose regular contact but also their role as hands-on caregivers.

When grandchildren are born abroad, a different emotional journey unfolds. Joy and excitement are often tempered by longing and sadness.

The reality of nurturing relationships across borders forces grandparents to redefine their roles.

For many families, pregnancy strengthens the bond between generations, especially between mothers and daughters. This phase is typically marked by shared rituals, which shape both maternal and grandparental identities. Rituals foster emotional connection and a sense of belonging.

But for grandparents who are separated, these moments may be replaced by screenshots and voice notes, making milestones feel distant and intangible.

This early absence can feel like an exclusion from grandparenthood itself, as if the role is denied before it has even begun. The phenomenon aligns closely with US psychologist Pauline Boss’s concept of ambiguous loss, grief without closure.

Despite this, many grandparents remain actively involved. Some grandparents become what US sociologists Judith Treas and Shampa Mazumdar call “seniors on the move”, becoming more mobile, structuring their lives around flights, visa renewals and seasonal caregiving.

But the challenges are big.

Staying close from far away

Sustaining a relationship across borders is tough.

Two key strategies emerged in my research: virtual communication and transnational visits.

All those I interviewed used technology extensively: weekly Zoom story time, recorded readings, or care “parcels” filled with letters, recipes, or handmade crafts.

In-person visits were limited by a mix of financial, logistical, emotional, and relational barriers.

The flights are just too expensive, and with my health, I don’t think I could manage the trip. It breaks my heart, but it’s just not possible. I don’t think I will ever see him again.

I also found that the role of parents was key. Through sharing photos, initiating calls, and keeping grandparents present in everyday conversations, some parents helped emotional bonds flourish.

My daughter and son-in-law are both very good at sending me photos and videos regularly … They both know how much I miss being with my two grandkids, so they keep me updated … They also phone weekly and encourage the children to be focused on our calls.

Takeaways

Transnational grandparenting challenges the traditional script of hands-on involvement. It calls for a reimagining of presence.

My research shows that grandparents are doing that through creativity, emotional elasticity and enduring love. They are forging a new kind of grandparenting across continents: one where connection transcends distance.

The Conversation

Sulette Ferreira is a research fellow at the University of Johannesburg.

ref. Grandparenting from a distance: what’s lost when families are separated, and how to bridge the gap – https://theconversation.com/grandparenting-from-a-distance-whats-lost-when-families-are-separated-and-how-to-bridge-the-gap-263279

Wheelchair basketball: what can be learned from a South African athlete’s journey to France

Source: The Conversation – Africa – By Phoebe Runciman, Associate Professor and Research Chair at the Division of Sport and Exercise Medicine, Stellenbosch University

Wheelchair basketball is one of the fastest-growing Para sports in the world. Over 100,000 athletes compete in national and international competitions and at the Paralympic Games and Commonwealth Games. In Africa, there are 26 national wheelchair basketball federations.

But the level of support and resources available for athletes with disability (Para athletes) varies greatly between the global north and south, shaped by gaps in healthcare, infrastructure and policy.

In African countries the sport is often underfunded. In 2022, for example, South Africa’s sports and recreation budget was 15 times lower than France’s.

Many Para sport athletes from the global south must pay for their own travel expenses and equipment. This limits their access to quality training and support, affecting their performance.




Read more:
The odds are stacked against athletes from poor countries in paralympic sport


But little is known about what it’s like for Para athletes to move between countries, especially from the global south to the global north.

My case study (on page 83 of the PDF) followed Sphelele Dlamini, a 29-year-old South African wheelchair basketball player who grew up in an underdeveloped area in KwaZulu-Natal province. He was born with a condition that led to the amputation of both legs below the knee.

After beginning his sporting journey in South Africa, Dlamini moved to France in 2022 to play professionally.

His experience reveals what Para athletes can expect as well as what they gain and what they leave behind when crossing borders in search of better opportunities. Dlamini’s journey highlights how cross-border moves may offer access to resources and more recognition, but also involve cultural challenges, adaptations and identity shifts.

His story can inform the support needed from organisations helping Para athletes to navigate these transitions so that they can compete at their full potential.

What must happen for athletes to shine

Dlamini’s story highlights four key factors that must be addressed to make a difference in the lives of South Africa’s Para athletes.

1. Public services

Firstly, the South African government and schools need to address the shortage of public services for people with disability. This includes creating accessible infrastructure, disability-inclusive healthcare and social support services.

Overcrowding and limited public services have been part of Dlamini’s daily life. For people with disability, townships can be especially challenging environments.

These are residential areas that were designated for Black South Africans under apartheid, South Africa’s former system of white minority rule. Townships were deliberately underdeveloped and under-resourced and they remain structurally disadvantaged today.

As Dlamini told me in an interview for my case study:

With the things that are happening in the township, it’s wild, it’s always busy.

He shared a home with 11 family members and described his upbringing as “an ever-changing environment that never settled down”.

2. Funding and promotion

Secondly, Para sport requires more financial support and promotion to build a more inclusive society – funding and competitive opportunities.

Dlamini had all but stopped playing competitively:

I spent about two years without playing. Then suddenly, I got a chance to go to France.

In France he found himself in what he called “a different type of chaos”. Training schedules were intense, and “there was hardly any free time”. Although the move was a breakthrough, the years of limited game time had caused some self-doubt for him.

This highlights the need for investment in Para sport in countries like South Africa, so that athletes can develop locally and have greater chances of international success.

3. Athlete and coach education

Thirdly, athlete and coach education is critical. Dlamini’s move to France was self-driven with no formal pathways or international exposure. He reached out to coaches directly:

I sent them emails and sometimes I would write to them on Facebook.

In much of the global south, Para sport relies on volunteer coaches with limited access to networks. Despite having no video footage, a French coach gave Dlamini a chance. In the global north, building a portfolio through documented game performance is standard, but this kind of athlete education is rarely emphasised in South Africa.

Countries like France also have established local clubs, with leagues that create pathways for regional, national and international competitions – and opportunities for professional contracts. Athletes receive a salary and games are streamed with backing from sponsors.

4. NGO support

Securing a spot on a French team didn’t mean Dlamini’s challenges were over. While his new club offered a salary, they couldn’t cover the cost of travel to France. It was Jumping Kids, a South African non-governmental organisation (NGO), that stepped in and paid for his air ticket, visa, flights and insurance.




Read more:
Why aren’t the Olympics and Paralympics combined into one Games? The reasoning goes beyond logistics


Dlamini first connected with Jumping Kids in 2014, when the organisation visited his school. He was selected to receive prosthetic legs and has remained in contact with them ever since. Today, he is one of the NGO’s ambassadors, alongside Paralympic athletes like Ntando Mahlangu and Arnu Fourie.

NGOs like this are a lifeline that need to be funded and supported, particularly in countries like South Africa where there are gaps in formal support.

Why Para sport matters

For many Para athletes, support starts at the school level. South Africa has 465 special needs schools catering to a range of disabilities. These schools often provide the first exposure to sport, as they did for Dlamini:

That’s where I saw people who were similar to my situation.

Research shows that sport gives individuals with disability a sense of belonging. This sense of inclusion, however, is difficult to achieve when environments are inaccessible.

In France, Dlamini felt that his skills were recognised and everyday life felt more navigable:

I really enjoy having the access [to public transport] and being able to move around and do things easily, without having to bother any other person.

Compared to South Africa, where players often share wheelchairs and go months without formal competition, France offered both structure and dignity.

However, in hindsight, Dlamini says he can look back at the setbacks and challenges he faced in South Africa, and view them from a different perspective:

I can never really judge it because, I may never know, maybe I was getting prepared for that journey.

Sphelele Dlamini’s story is one of resilience. Despite the odds, he created his path to play professionally. His journey highlights the determination required of athletes from the global south, and the systemic barriers they face that hinder development and progress in sport.

While NGOs continue to fill critical gaps, long-term progress in Para sport requires structural investment.


Faatima Adam, a biokineticist and PhD candidate, contributed to this article.

The Conversation

Phoebe Runciman 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. Wheelchair basketball: what can be learned from a South African athlete’s journey to France – https://theconversation.com/wheelchair-basketball-what-can-be-learned-from-a-south-african-athletes-journey-to-france-261593

Studying philosophy does make people better thinkers, according to new research on more than 600,000 college grads

Source: The Conversation – USA (3) – By Michael Vazquez, Teaching Assistant Professor of Philosophy, University of North Carolina at Chapel Hill

Students take a philosophy test in Strasbourg, France, on June 18, 2024. Frederick Florin/AFP via Getty Images

Philosophy majors rank higher than all other majors on verbal and logical reasoning, according to our new study published in the Journal of the American Philosophical Association. They also tend to display more intellectual virtues such as curiosity and open-mindedness.

Philosophers have long claimed that studying philosophy sharpens one’s mind. What sets philosophy apart from other fields is that it is not so much a body of knowledge as an activity – a form of inquiry. Doing philosophy involves trying to answer fundamental questions about humanity and the world we live in and subjecting proposed answers to critical scrutiny: constructing logical arguments, drawing subtle distinctions and following ideas to their ultimate – often surprising – conclusions.

It makes sense, then, that studying philosophy might make people better thinkers. But as philosophers ourselves, we wondered whether there is strong evidence for that claim.

Students who major in philosophy perform very well on tests such as the Graduate Record Examination and Law School Admission Test. Studies, including our own, have found that people who have studied philosophy are, on average, more reflective and more open-minded than those who haven’t. Yet this doesn’t necessarily show that studying philosophy makes people better thinkers. Philosophy may just attract good thinkers.

Our latest study aimed to address that problem by comparing students who majored in philosophy and those who didn’t at the end of their senior year, while adjusting for differences present at the start of their freshman year. For example, we examined students’ performance on the GRE, which they take toward the end of college, while controlling for scores on the SAT, which they take before college.

We did the same when analyzing survey data collected by the Higher Education Research Institute at the start and end of college. These surveys asked students to, for example, rate their abilities to engage with new ideas or have their own ideas challenged, and how often they explored topics raised in class on their own or evaluated the reliability of information.

All told, we looked at test and survey data from over 600,000 students. Our analysis found that philosophy majors scored higher than students in all other majors on standardized tests of verbal and logical reasoning, as well as on self-reports of good habits of mind, even after accounting for freshman-year differences. This suggests that their intellectual abilities and traits are due, in part, to what they learned in college.

Why it matters

Public trust in higher education has hit record lows in recent years, according to polling by the Lumina Foundation and Gallup. Meanwhile, the rapid advance of generative AI has threatened the perceived value of a traditional college degree, as many previously vaunted white-collar skills are at risk of being automated.

Yet now more than ever, students must learn to think clearly and critically. AI promises efficiency, but its algorithms are only as good as the people who steer them and scrutinize their output.

The stakes are more than personal. Without citizens who can reason through complex issues and discern good information from bad, democracy and civic life are at risk.

What still isn’t known

While our results point to real growth in students’ intellectual abilities and dispositions, they do not capture everything philosophers mean by “intellectual virtue.” Intellectual virtue is not just a matter of possessing certain abilities but of using those abilities well: at the right times, for the right reasons, and in the right ways.

Our measures do not tell us whether philosophy majors go on to apply their newfound abilities in the service of truth and justice or, conversely, for personal gain and glory. Settling that question would require gathering a different kind of evidence.

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

The Conversation

The research described in this article was supported by a grant from the American Philosophical Association.

ref. Studying philosophy does make people better thinkers, according to new research on more than 600,000 college grads – https://theconversation.com/studying-philosophy-does-make-people-better-thinkers-according-to-new-research-on-more-than-600-000-college-grads-262681

Managing soil fertilization levels can make for more efficient and productive crops

Source: The Conversation – Canada – By JT Cornelis, Associate Professor, Applied Biology (Soil Science), University of British Columbia

Modern crops are often excessively fertilized, which boost yields in the short term but also harms the environment due to nutrient runoffs and greenhouse gas emissions.

Additionally, fertilizers are often inefficient because much of the applied fertilizers become bound to soil particles over the long term, making them unavailable for plants.

The application of high doses of easily soluble fertilizers may ensure crop productivity, but it comes at the cost of environmental quality and agroecosystem resilience. This fertilization strategy often results in “lazy” crops with underdeveloped root systems and reduced ability to acquire nutrients from native soil reserves.

As a pedologist (someone who studies soil formation) and biogeochemist, my research focuses on the multiscalar and interdisciplinary study of soil systems.

Improving resiliency

In Canada’s vast forests, the trees thrive in nutrient-impoverished soils because of the capacity of their deep root systems to acquire nutrients and water. In natural ecosystems, plants have evolved and developed root strategies that help to absorb nutrients.

One way they do this is by growing bigger, stronger and more active roots, which help them access more nutrients from the soil. Sometimes, they team up with soil micro-organisms to increase their capacity to access nutrients. As roots absorb nutrients, they also release certain molecules in the soil called root exudates.

These compounds contribute to breaking down organic matter and dissolving soil particles, making trapped nutrients accessible for plant root uptake. Root exudates are also a source of energy for soil microorganisms, which down the road also support soil carbon storage and enhance general soil health.

The SoilRes3 Lab at the University of British Columbia carries out interdisciplinary research on soil genesis to uncover how microscale processes shape macroscale ecosystem properties and resilience. Grounded in soil–plant feedbacks, our pedological work examines the complex relationships between land and people across diverse eco-cultural contexts, with the goal of strengthening ecosystem resilience, resistance and restoration.

Examining soil-plant feedback in natural ecosystems, we found that using a bit less fertilizer could actually benefit crops in the long run. By decreasing fertilizer, we could increase the production of root exudates. This enhances the plants’ ability to absorb nutrients on their own, rather than depending on external inputs.

By increasing microbial activity in the rhizosphere (the area surrounding plant roots) and acting as a direct carbon source into the soil, increased root exudates could also contribute to healthier soils.

plant roots in a forest
The rhizosphere is the area surrounding plant roots where the roots, soil organisms, nutrients and water interact.
(Jordan Fernandes/Unsplash), CC BY

Alternative strategies

Nitrogen and phosphorus are the two most important nutrients for plant growth, and they are the most used fertilizers around the world.

Our team of soil scientists reviewed 36 studies encompassing 30 different crops and soil contexts. We compared how plants responded under two fertilization conditions: one with the usual amount of fertilizer to maximize yield, and another with less fertilizer, especially less nitrogen and phosphorus.

We found that cutting phosphorus fertilizer by up to half boosted root exudation by 30 per cent, while only slightly reducing crop growth by just two per cent. In contrast, reducing nitrogen fertilizer raises root exudation by seven per cent, but lowers plant growth by 20 per cent.

Our findings show that optimizing phosphorus use in agriculture can stimulate more active root systems and increase exudate production.

Soil types

Optimizing phosphorus fertilizer to boost root exudation without sacrificing yield depends heavily on soil type. Soils in British Columbia differ significantly from those in Manitoba, Québec and Saskatchewan, and the impact of root exudates on nutrient uptake and carbon capture varies with soil conditions (soil pH, mineralogy, moisture, texture).

That’s why our proposed strategy — limiting fertilizers to maximize root activity — must be tested in real-world settings, with farmers, across diverse soils and crop systems.

The next step will be to examine root exudation responses and effects under varying soil physicochemical and eco-cultural contexts. Field trials are essential to tailor this approach to local conditions and ensure its effectiveness and scalability.

The Conversation

JT Cornelis works for the Faculty of Land and Food Systems at the University of British Columbia, as an Associate Professor in soil science. He receives funding from NSERC Discovery Grant, NSERC Alliance, Killam Trusts and BC Genome.

ref. Managing soil fertilization levels can make for more efficient and productive crops – https://theconversation.com/managing-soil-fertilization-levels-can-make-for-more-efficient-and-productive-crops-253298

Here’s why Canada’s parents and grandparents reunification program is problematic

Source: The Conversation – Canada – By Megan Gaucher, Associate Professor, Department of Law and Legal Studies, Carleton University

Immigration, Refugees and Citizenship Canada’s recent announcement that it’s accepting 10,000 sponsorship applications under the Parent and Grandparents Program (PGP) comes with an important caveat.

Due to persistent backlog, invitations will only be sent to the 17,860 potential sponsors who submitted an interest-to-sponsor application back in 2020.

While good news for some, it means yet another cycle of uncertainty for thousands of families who have waited years for the PGP to finally reopen.

Migrant families seek permanent reunification for reasons other than a desire to live with their parents and grandparents in the same country. Those reasons include a need for child-care support and a desire to care for their older family members as they age.

As international conventions dictate, families have a right to be together.

From permanent to temporary

Grandparents have been part of Canada’s formal “family class” pathway since 1976, but current policy favours spouses and dependent children. This makes reunification for extended family members difficult.

Grandparent admissions through the PGP have comprised around 25 per cent of total family class admissions for the past 10 years.

Unlike other family class categories, there is a predetermined cap on accepted PGP applications. The PGP has also undergone a series of program freezes to deal with an application backlog, the most recent announced in January 2025. The government’s latest update included no commitment to receive new interest-to-sponsor declarations.

As an alternative to the PGP, the government recommends the super visa, a multi-entry visa valid for up to 10 years. However, the super visa requires grandparents to reapply and meet medical inadmissibility rules every five years.

The super visa also places responsibility for financial and health care of grandparents entirely on the sponsoring children, sometimes with devastating consequences.

Most importantly, the super visa does not guarantee permanent residence upon expiration. Permanent grandparent reunification remains a lottery draw, at the mercy of sponsorship intake caps.

Celebrating, denigrating migrant grandparents

Our preliminary research on grandparent sponsorship explores how elected officials consider the place of migrant grandparents in Canadian society. We’ve so far found they regard permanent family class migration as “good for business” as it attracts economic migrants. At the same time, elected officials believe that certain dependants monopolize health and social safety nets.

Grandparents, in particular, are treated by governments as human liabilities who must be admitted “responsibly.”

Admitting grandparents to Canada is tied to their perceived ability to support their sponsors by performing unpaid domestic labour. Our research has found elected officials celebrate sponsored grandparents for the substantial unpaid care work they provide like meal preparation, child care and cleaning.

In a recent survey on grandparent sponsorship, sponsors describe the unpaid work conducted by grandparents as essential to their participation in the Canadian workforce.

an older dark-haired woman plays with a boy at a playground
Grandparents can be key to helping younger family members become active in the Canadian workforce.
(Kateryna Hliznitsova/Unsplash)

Migrant grandparents are also positioned as providers of cultural care for their grandchildren. Our research draws attention to elected officials often invoking memories of their own migrant grandparents passing along languages, practices and values that shaped their unique cultural identities.

Despite the benefits migrant grandparents provide, sponsored grandparents are consistently suspected of taking advantage of Canada’s health care and social welfare systems. This is why the super visa is promoted as an alternative pathway.

Dependent on sponsors

Grandparents who come to Canada through the super visa are financially reliant on their sponsors. Even though the government recognizes that the number of sponsored grandparents applying for old age security is relatively small, treating migrant grandparents as economic burdens allows governments to justify caps and application pauses on PGP sponsorship.

Contrary to governments’ framing of the super visa as aligning with migrants’ families demands for temporary care, our research shows that grandparents often resort to humanitarian and compassionate applications to obtain permanent residence once their super visa has expired. In these cases, their ability to perform care work is further scrutinized.

In terms of grandparent sponsorship, care is largely understood as temporary and one-directional — in other words, migrant grandparents are welcomed when they provide care, but are seen as liabilities when they need care themselves.




Read more:
Canada halts new parent immigration sponsorships, keeping families apart


Prioritizing the needs of migrant families

How do we reconcile government claims that family reunification is a “fundamental pillar of Canadian society” with the reality that permanent grandparent reunification remains difficult to obtain?

Intake announcements like the most recent one in July allow governments to celebrate permanent grandparent migration. At the same time, the inconsistency of the PGP and solutions like the super visa keep migrant grandparents in a state of legal, political and economic precarity.

With the Liberal government announcing cuts to family class admissions over the next three years, the impact of these changes on grandparent reunification warrants attention.

Rather than temporary reforms and routes, the government needs to consider structural changes to Canada’s family class pathway that focus on the needs and interests of families seeking permanent reunification.

The Conversation

Megan Gaucher receives funding from the Social Sciences and Humanities Research Council.

Asma Atique receives funding from Mitacs and the College of Immigration and Citizenship Consultants. She is affiliated with CERC Migration and Integration and volunteers for South Asian Women and Immigrants’ Services.

Ethel Tungohan receives funding from the Social Sciences and Humanities Research Council.

Harshita Yalamarty receives funding from Social Sciences and Humanities Research Council.

ref. Here’s why Canada’s parents and grandparents reunification program is problematic – https://theconversation.com/heres-why-canadas-parents-and-grandparents-reunification-program-is-problematic-262263

« Vallée du silicium » : une critique des effets des technologies sur nos vies

Source: The Conversation – in French – By Christophe Premat, Professor, Canadian and Cultural Studies, Stockholm University

Une vue d’Apple Park, siège social d’Apple, à Cupertino en Californie. La Silicon Valley, avec ses mondes virtuels et ses réseaux sociaux, incarne parfaitement cette tendance de notre époque à « l’hypervirtualisation ». (James Genchi/Unsplash), CC BY-NC

Certaines lectures marquent durablement, en offrant des clés pour désigner ce que l’on ressent confusément. Vallée du silicium, un essai d’Alain Damasio paru en 2024 aux éditions Seuil, en fait partie.

Cet article fait partie de notre série Les livres qui comptent, où des experts de différents domaines décortiquent les livres de vulgarisation scientifique les plus discutés.


Dans ce projet hybride, mêlant chroniques, journal de résidence et micro-nouvelle de science-fiction, l’auteur français de science-fiction et de littérature de l’imaginaire observe la Silicon Valley depuis son séjour à San Francisco. Alain Damasio est reconnu pour son style singulier et son exploration de formes narratives innovantes. Il a une approche multimodale de la création. Ses textes s’accompagnent souvent de prolongements sonores, musicaux ou performatifs : il collabore avec des musiciens et des artistes pour prolonger l’univers de ses récits.

Dans Vallée du silicium, il explore comment les technologies numériques reconfigurent nos existences — nos pensées, nos corps, nos relations — avec une écriture à la fois poétique, critique et philosophique.

« Pochette.
XXX, CC BY-NC

Damasio y introduit le concept de « technococon » pour désigner « un univers où la vitesse du branchage devient la garantie d’un dressage psychique et corporel ». Autrement dit, un environnement hyperconnecté, conçu pour notre confort, mais qui façonne subtilement nos comportements et notre manière de penser.

En tant que spécialiste des théories postmodernes et postcoloniales francophones, je m’intéresse notamment aux dispositifs narratifs qui permettent de penser le rapport entre identité et transformation. C’est à ce titre que j’ai souhaité lire Vallée du silicium d’Alain Damasio, dont l’œuvre explore des formes d’énonciation collectives et multimodales, ouvrant la voie à une réflexion sur le vivre-ensemble, l’hybridité et la résistance aux logiques de contrôle.

La pertinence du terme de « technococon »

Le « technococon » ne désigne pas seulement un environnement technologique. C’est une structure invisible dans nos vies : un ensemble d’interfaces, d’algorithmes et de routines numériques pensés pour réduire l’imprévu, fluidifier l’usage, et optimiser notre attention. En pratique, ce confort numérique devient une forme de dressage. À force de déléguer nos choix et nos attentions aux outils, nous perdons la capacité critique de comprendre et de questionner ces mêmes outils.

Damasio ne se contente pas de décrire ce qu’il voit, il replace ses observations dans un cadre plus large. Il s’appuie sur deux penseurs majeurs. Le premier, le sociologue et philosophe français Jean Baudrillard, a forgé l’idée que notre époque vit dans une « hypervirtualisation » : le réel est recouvert par ses images et ses représentations, au point que nous finissons par confondre ce qui existe avec ce qui est montré. La Silicon Valley, avec ses mondes virtuels et ses réseaux sociaux, incarne parfaitement cette tendance.

Le second, Gilles Deleuze, philosophe français lui aussi, a décrit ce qu’il appelait les « sociétés de contrôle » : le pouvoir ne s’exerce plus seulement par des lois ou des interdits clairs, mais de manière diffuse, en orientant en permanence nos comportements et nos choix. Les algorithmes qui décident des informations que nous voyons sur nos écrans ou qui ajustent automatiquement nos préférences en sont un exemple concret.


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À partir de ces idées, Damasio part sur le terrain : il visite les sièges d’entreprises technologiques, observe les lieux de travail ultramodernes, mais aussi les quartiers de San Francisco qui restent à l’écart de cette prospérité numérique. Ce contraste alimente sa réflexion : alors que la Silicon Valley se présente comme un moteur de progrès, elle crée aussi des espaces de mise à l’écart et renforce certaines inégalités.

La science-fiction au service d’un diagnostic politique

Dans ses œuvres précédentes (La Zone du dehors en 1999, La Horde du Contrevent en 2004, ou Les Furtifs, en 2019, Damasio explorait déjà les technologies comme force sociale et politique. Avec Vallée du silicium, il fait un pas supplémentaire : au lieu de projeter un futur dystopique, il l’interroge dans le présent.

Le livre a ainsi une double fonction : documenter, par une écriture immersive et réflexive, les effets des technologies sur nos vies ; stimuler, par sa forme et son ton, une pensée critique et collective face à la tendance à l’hyperindividualisme que les plates-formes numériques renforcent.

Résister au confort anesthésiant

Damasio décrit la Silicon Valley comme l’« idéal-type d’une bureaucratie parfaite ». Tout y est automatisé, standardisé, et l’instinct humain est absorbé dans le code. Cette perfection apparente a un coût : l’érosion de notre autonomie relationnelle et politique.

Il met en garde : à force de tout aplanir, nous éliminons les zones d’imprévu où peuvent naître la créativité et la contestation. Les outils conçus pour nous « simplifier la vie » deviennent des structures qui simplifient aussi notre pensée — au sens où elles la réduisent.

L’auteur invite donc à réintroduire volontairement de la friction dans nos vies : passer par des chemins plus longs, se laisser surprendre, créer des espaces de rencontres non médiatisées par des écrans.

L’auteur introduit dans son essai le concept de « technococon » pour désigner un environnement hyperconnecté, conçu pour notre confort, mais qui façonne subtilement nos comportements et notre manière de penser.
(Chandri Anggara, sur Unsplash), CC BY-NC

Cette proposition trouve un contrepoint dans la nouvelle qui ponctue l’ouvrage et qui fonctionne comme une fable dystopique : le « technococon » y est poussé à sa limite. Elle interroge, par fiction, ce que l’enquête a montré, empêchant le lecteur de s’installer dans une posture purement analytique.

L’hyperconnexion, un non-sens anthropologique

Dans un contexte où l’intelligence artificielle, les algorithmes et les plates-formes numériques façonnent rapidement notre rapport au monde, cet essai arrive à point nommé.

Il ne s’agit pas d’un manifeste technophobe, mais d’une invitation à repenser notre façon d’habiter le numérique. Pour Damasio, l’attention, la puissance collective, le soin du lien social sont des ressources à cultiver contre le confort algorithmique.

Le livre pose ainsi une question centrale : comment vivre dans un monde hyperconnecté tout en préservant notre puissance d’agir ensemble, hors du confort du cocon technologique ?

Il serait facile de cantonner ce livre dans le rayon science-fiction. Mais la dimension journalistique et les enjeux contemporains le rendent pertinent pour tout lecteur préoccupé par le numérique.

L’essai propose un modèle littéraire stimulant : croisant théorie, enquête de terrain et micro-récit, il mobilise à la fois l’intellect et l’émotion. Construit comme un essai postmoderne, il brouille les frontières entre observation et imagination. Cela le rend puissant, sensible et urgent à lire.

Inventer d’autres manières de vivre ensemble, hors du cocon

Vallée du silicium nous invite à ressentir, penser et réagir. En forgeant le concept de « technococon », Alain Damasio propose un prisme clair pour analyser notre époque, mais il ne s’arrête pas à un simple diagnostic.

Il se lit comme une réécriture critique d’Amérique de Jean Baudrillard. Là où ce dernier, dans les années 1980, sillonnait les routes des États-Unis pour capter l’essor du simulacre et l’imaginaire du rêve américain, Damasio parcourt la Silicon Valley pour montrer comment le numérique, les algorithmes et l’intelligence artificielle façonnent un nouvel environnement mental et social.

Cette « Amérique » revisitée n’est plus celle des grands espaces et des autoroutes infinies, mais celle des campus high-tech, des open spaces aseptisés et des écrans omniprésents. Elle promet puissance et liberté individuelle, tout en tissant des réseaux invisibles qui orientent nos désirs et nos comportements. C’est un voyage où la vitesse de connexion remplace la vitesse physique, où la route devient un flux de données, et où le lien humain menace de se dissoudre dans une communication permanente.

Damasio nous appelle à inventer d’autres manières de vivre ensemble, hors du cocon. Dans un monde qui valorise la fluidité, l’immédiateté et la personnalisation à outrance, il rappelle que la liberté se niche parfois dans la lenteur, l’imprévu et la rencontre. C’est dans ces espaces non programmés, hors ligne, que peuvent renaître la puissance collective et le plaisir de construire ensemble.

La Conversation Canada

Christophe Premat est Professeur en études culturelles francophones à l’Université de Stockholm et directeur du Centre d’études canadiennes. Il a publié en 2025 l’article “Questionner le ‘technococon’ avec Alain Damasio dans la revue Mouvances Francophones (https://doi.org/10.5206/mf.v10i1.22629). Christophe Premat est actuellement membre de la CISE (Confédération Internationale Solidaire Écologiste), une association des Français de l’étranger créée en 2018. Il est également membre de l’Association Internationale des Études Québécoises depuis 2022.

ref. « Vallée du silicium » : une critique des effets des technologies sur nos vies – https://theconversation.com/vallee-du-silicium-une-critique-des-effets-des-technologies-sur-nos-vies-263392

Envie de plus d’orgasmes ? Optez pour une partenaire féminine

Source: The Conversation – in French – By Caroline Pukall, Professor, Department of Psychology, Queen’s University, Ontario

Être en couple avec une femme est associé à un avantage en termes d’orgasme.

(Pexels/Cottonbro)

Le fossé de l’orgasme — cette constatation constante selon laquelle les hommes ayant des rapports sexuels avec des femmes ont des orgasmes plus fréquents que les femmes ayant des rapports sexuels avec des hommes — a été démontrée dans une série d’études menées auprès de participants cisgenres hétérosexuels.

L’écart est important : d’après une étude canadienne récente, environ 60 % des femmes et 90 % des hommes ont déclaré avoir atteint l’orgasme lors de leur rapport sexuel le plus récent.

Dans des échantillons sexuellement diversifiés (comprenant également des femmes ayant des rapports sexuels avec des femmes et des hommes ayant des rapports sexuels avec des hommes), la tendance devient plus nuancée, mais confirme toujours l’existence d’un écart entre les sexes en matière d’orgasme.

Deux femmes, l’une entourant l’autre de ses bras et l’embrassant sur le front
Les recherches ont montré que les femmes ayant des rapports sexuels avec d’autres femmes connaissent une fréquence d’orgasmes plus équitable au sein de leur relation.
(Pexels/Ketut Subiyanto)

La recherche a montré que l’écart dans la fréquence des orgasmes est moins marqué chez les femmes qui ont des rapports sexuels avec des femmes (environ 75 %), et ce taux est significativement plus élevé que chez les femmes qui ont des rapports sexuels avec des hommes (environ 62 %). Toutefois, les hommes en tant que groupe —, quelle que soit la personne avec laquelle ils ont des rapports sexuels — ont toujours une fréquence d’orgasme nettement plus élevée (85 %) que les femmes en général (63 %). Ainsi, les femmes sont désavantagées sur le plan de l’orgasme lorsqu’elles ont des rapports avec des hommes.

Le fossé de l’orgasme

Quelle est l’ampleur de l’écart entre les sexes en matière d’orgasme et quels sont les facteurs susceptibles de faire obstacle à l’orgasme pour tous ? Nous — une équipe de chercheurs et de journalistes scientifiques du podcast Science Vs — avons étudié la fréquence des orgasmes dans un vaste échantillon diversifié, incluant des minorités sexuelles et de genre (comme les lesbiennes et les personnes trans), ainsi que des participants racialisés. Les analyses centrées sur l’orientation sexuelle ou l’origine ethnique n’ont toutefois pas révélé de différences marquées.

La bonne nouvelle ? Nous avons constaté que, dans l’ensemble, de nombreuses personnes avaient beaucoup d’orgasmes — environ deux tiers d’entre elles ont déclaré avoir des orgasmes presque ou à chaque fois qu’elles avaient des rapports sexuels.

La moins bonne nouvelle ? Le fossé de l’orgasme persiste : les hommes cisgenres ont rapporté la fréquence d’orgasme la plus élevée, bien devant les femmes et les personnes de genres minoritaires, qui ne présentent pas de différences marquées entre elles. De plus, nous avons observé que les participants, quel que soit leur genre, ayant des rapports sexuels avec des femmes indiquaient des orgasmes beaucoup plus fréquents que ceux ayant des rapports avec des hommes. Avoir une partenaire féminine semble donc favoriser l’orgasme.




À lire aussi :
Tout ce que vous devriez savoir sur le « fossé orgasmique »


Autre nouvelle moins réjouissante : environ 17 % des participantes ont déclaré n’avoir presque jamais ou jamais d’orgasme pendant les rapports sexuels. Pour les femmes cis, les barrières psychologiques — telles que l’insécurité, les problèmes de santé mentale et les distractions — étaient importantes, tout comme les obstacles sexuels (comme le fait de ne pas recevoir une stimulation adéquate), les difficultés inhérentes aux orgasmes (par exemple, ils prennent trop de temps et nécessitent trop d’efforts) et le fait de ne pas savoir pourquoi il leur est difficile d’avoir des orgasmes.

Combler le fossé

Pourquoi le fossé de l’orgasme persiste-t-il ? L’une des raisons principales est que les normes socioculturelles générales privilégient le plaisir sexuel des hommes par rapport à celui des femmes. En effet, ces normes découlent du scénario sexuel traditionnel (hétérosexuel, occidental) qui définit la fin de l’activité sexuelle comme étant l’orgasme masculin ; il est important de noter que l’adhésion des femmes à ce scénario a été associée à une satisfaction sexuelle moindre.

Une femme en robe jaune et un homme en chemise sombre et short kaki assis sur un lit
Le degré de familiarité des femmes avec leur partenaire s’est également révélé déterminant pour réduire l’écart.
(Unsplash/Jonathan Borba)

D’autre part, les médias grand public alimentent des récits d’attentes sexuelles fondés sur le sexe, de sorte que les représentations de femmes sont beaucoup plus acceptées que celles des hommes sans orgasme. Cette inégalité se manifeste lors des rencontres sexuelles, perpétuant le fossé et rendant moins urgente la lutte contre ce phénomène.


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Mais il y a de l’espoir : la motivation des hommes hétérosexuels à amener leur partenaire à l’orgasme et l’intégration intentionnelle d’activités sexuelles qui augmentent les chances d’orgasme de leur partenaire — telles que la stimulation clitoridienne et le sexe oral — peuvent contribuer à réduire (et même à éradiquer !) l’écart. Il a également été démontré que le degré de familiarité entre les femmes et leur partenaire contribue à réduire l’écart. Une plus grande familiarité (pensez à une relation à long terme par opposition à une relation occasionnelle) a été associée à une plus grande fréquence d’orgasme.

Le simple fait de donner la priorité à l’orgasme des femmes — en adoptant des phrases simples comme « elle passe en premier » — pourrait suffire à réduire considérablement l’écart entre les sexes en matière d’orgasme.

La Conversation Canada

Caroline Pukall ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d’une organisation qui pourrait tirer profit de cet article, et n’a déclaré aucune autre affiliation que son organisme de recherche.

ref. Envie de plus d’orgasmes ? Optez pour une partenaire féminine – https://theconversation.com/envie-de-plus-dorgasmes-optez-pour-une-partenaire-feminine-261130