Plantes médicinales : valider la tradition, prévenir les risques

Source: The Conversation – in French – By François Chassagne, Chargé de recherche en ethnopharmacologie, Institut de recherche pour le développement (IRD)

À la croisée de l’ethnobotanique et de la pharmacologie, l’ethnopharmacologie étudie et valide des remèdes traditionnels aux quatre coins du monde. Ici, un marché de plantes médicinales au Cambodge. François Chassagne, Fourni par l’auteur

En France, dans les territoires d’outre-mer en particulier, mais aussi ailleurs dans le monde, l’ethnopharmacologie doit faire face à plusieurs enjeux. Les laboratoires spécialisés dans cette discipline sont sollicités pour confirmer, ou non, l’intérêt thérapeutique de remèdes, à base de plantes notamment, utilisés dans les traditions. Mais ils doivent mener ce travail en préservant ces savoirs dans leurs contextes culturels.


Saviez-vous que près d’une plante sur dix dans le monde était utilisée à des fins médicinales ? Certaines ont même donné naissance à des médicaments que nous connaissons tous : l’aspirine, dérivé du saule (Salix alba L.), ou la morphine, isolée du pavot à opium (Papaver somniferum L.).

Au fil des siècles, les remèdes traditionnels, consignés dans des textes comme ceux de la médecine traditionnelle chinoise ou ayurvédique, ou transmis oralement, ont permis de soulager une multitude de maux. Ainsi, en Chine, les tiges de l’éphédra (Ephedra sinica Stapf), contenant de l’éphédrine (un puissant décongestionnant), étaient employées contre le rhume, la toux et l’asthme il y a déjà 5 000 ans. En Europe, les feuilles de digitale (Digitalis purpurea L.), d’où est extraite la digoxine (un cardiotonique), servaient dès le Moyen Âge à traiter les œdèmes.

En Amérique du Sud, l’écorce du quinquina (Cinchona pubescens Vahl.), contenant de la quinine (antipaludique), étaient utilisées par des communautés indigènes pour combattre les fièvres. En Inde, les racines de rauvolfia (Rauvolfia serpentina (L.) Benth. ex Kurz) contenant de la réserpine (antihypertenseur), furent même employées par Mahatma Gandhi pour traiter son hypertension.

Aujourd’hui encore, les plantes médicinales restent très utilisées, notamment dans les régions où l’accès aux médicaments conventionnels est limité. Mais une question demeure : sont-elles toutes réellement efficaces ? Leur action va-t-elle au-delà d’un simple effet placebo ? Et peuvent-elles être dangereuses ?

C’est à ces interrogations que répond l’ethnopharmacologie : une science à la croisée de l’ethnobotanique et de la pharmacologie. Elle vise à étudier les remèdes traditionnels pour en comprendre leurs effets, valider leur usage et prévenir les risques. Elle contribue aussi à préserver et valoriser les savoirs médicinaux issus des cultures du monde.

Un patrimoine mondial… encore peu étudié

Ces études sont d’autant plus cruciales que les plantes occupent encore une place centrale dans la vie quotidienne de nombreuses sociétés. En Afrique subsaharienne, environ 60 % de la population a recours à la médecine traditionnelle. En Asie, ce chiffre avoisine les 50 %. Et en Europe, 35 % de la population française déclare avoir utilisé des plantes médicinales ou d’autres types de médecines non conventionnelles dans les douze derniers mois – l’un des taux les plus élevés du continent !

Cette spécificité française s’explique par un faisceau de facteurs : une culture de résistance à l’autorité (face à la rigidité bureaucratique ou au monopole médical), un héritage rural (valorisation des « simples » de nos campagnes et méfiance envers une médecine jugée trop technologique), mais aussi une ouverture au religieux, au spirituel et au « paranormal » (pèlerinages de Lourdes, magnétisme, voyance…).

Ces chiffres ne reflètent pourtant pas toute la richesse de la phytothérapie française (la phytothérapie correspondant littéralement à l’usage thérapeutique des plantes). Dans les territoires d’outre-mer, les savoirs traditionnels sont particulièrement vivants.

Que ce soit en Nouvelle-Calédonie, où se côtoient traditions kanak, polynésienne, wallisienne, chinoise et vietnamienne, ou en Guyane française, avec les médecines créole, amérindienne, hmong ou noir-marron. Au total, les 13 territoires ultramarins apportent une richesse indéniable à la pharmacopée française. Preuve en est : 75 plantes ultramarines utilisées en Guadeloupe, en Guyane française, à la Martinique et à La Réunion ont récemment été intégrées à la pharmacopée nationale, un document officiel recensant les matières premières autorisées pour la fabrication des médicaments. Parmi elles, le gros thym (Coleus amboinicus Lour.) dont les feuilles sont utilisées pour traiter les rhumatismes, les fièvres ou encore l’asthme dans ces quatre territoires.

Ingrédients et remèdes polynésiens pour prévenir le he’a (un trouble associant désordres génito-urinaires et cutanés).
François Chassagne, Fourni par l’auteur

Mais cela reste l’arbre qui cache la forêt : sur les quelques 610 plantes inscrites à la pharmacopée française, seules quelques-unes proviennent des territoires ultramarins, alors même que les Antilles, la Guyane française et la Nouvelle-Calédonie comptent chacune environ 600 espèces médicinales recensées par la recherche. Plus largement encore, à l’échelle mondiale, seules 16 % des 28 187 plantes médicinales connues figurent aujourd’hui dans une pharmacopée officielle ou un ouvrage réglementaire. Autrement dit, l’immense majorité de ce patrimoine reste à explorer, comprendre et valoriser.

Étudier, valider, protéger

Dans les pharmacopées officielles, chaque plante fait l’objet d’une monographie : un document scientifique qui rassemble son identité botanique, ses composés bioactifs connus, ses données pharmacologiques et toxicologiques ainsi que les usages traditionnels et établis scientifiquement (indications thérapeutiques, posologies, modes d’administration, précautions d’emploi). En somme, une monographie joue à la fois le rôle de carte d’identité et de notice d’emploi de la plante. Validée par des comités d’experts, elle constitue une référence solide pour les professionnels de santé comme pour les autorités sanitaires.

Lorsqu’une plante n’est pas intégrée dans une pharmacopée, son usage reste donc empirique : on peut l’utiliser depuis des siècles, mais sans données claires sur son efficacité, la sécurité ou les risques d’interactions avec d’autres traitements.

Pour avancer vers la création de monographies et mieux intégrer ces plantes aux systèmes de santé, plusieurs outils sont à notre disposition :

  • des enquêtes ethnobotaniques, pour recenser les savoirs traditionnels et décrire les remèdes utilisés ;

  • des tests pharmacologiques, pour comprendre l’effet biologique des plantes et le lien avec leur usage (ex. : une plante utilisée contre les furoncles peut être testée contre le staphylocoque doré) ;

  • des analyses toxicologiques, pour évaluer l’innocuité des plantes, sur cellules humaines ou organismes vivants ;

  • des analyses phytochimiques, pour identifier les molécules actives, grâce à des techniques comme la chromatographie ou la spectrométrie de masse.

Entretien ethnobotanique sur l’île de Huahine (Polynésie française).
François Chassagne, Fourni par l’auteur

Au sein de nos laboratoires PharmaDev à Toulouse (Haute-Garonne) et à Nouméa (Nouvelle-Calédonie), nous combinons ces approches pour mieux comprendre les plantes et les intégrer, à terme, dans les systèmes de soins. Nous étudions des pharmacopées issues de Mayotte, de Nouvelle-Calédonie, de Polynésie française, mais aussi du Bénin, du Pérou, du Cambodge ou du Vanuatu.

Tests antibactériens de plantes dans notre laboratoire de microbiologie à Toulouse.
François Chassagne, Fourni par l’auteur

Par exemple, nous avons analysé des remèdes du Pacifique utilisés chez les enfants pour en comprendre les bénéfices thérapeutiques et les risques toxiques. En Nouvelle-Calédonie, les feuilles de niaouli (Melaleuca quinquenervia (Cav.) S.T.Blake) sont couramment utilisées contre les rhumes en automédication. Or, elles contiennent de l’eucalyptol, susceptible de provoquer des convulsions chez les enfants de moins de 36 mois. Il est donc recommandé de ne pas employer ce remède chez les enfants de cet âge et/ou ayant eu des antécédents d’épilepsie ou de convulsions fébriles et, en cas de doute, de se référer à un professionnel de santé (médecin, pharmacien…). D’ailleurs, certains médicaments à base d’huile essentielle de niaouli peuvent, en fonction du dosage, être réservés à l’adulte. C’est précisément pour cela que nous diffusons nos résultats à travers des articles scientifiques, des séminaires et des livrets de vulgarisation, afin que chacun puisse faire un usage éclairé de ces remèdes.

Deux plantes médicinales emblématiques du Pacifique. A : le niaouli (Melaleuca quinquenervia (Cav.) S.T.Blake) en Nouvelle-Calédonie, B : le tiare tahiti (Gardenia tahitensis DC.) en Polynésie française.
François Chassagne, Fourni par l’auteur

Médecine traditionnelle et enjeux de développement durable

En Polynésie française, nous étudions la médecine traditionnelle à travers le développement durable. Plusieurs menaces pèsent aujourd’hui sur ces pratiques : la migration des jeunes, qui fragilise la transmission intergénérationnelle des savoirs ; le changement climatique, qui modifie la répartition des plantes ; ou encore les espèces invasives, qui concurrencent et parfois supplantent les espèces locales.

Or, ces savoirs sont essentiels pour assurer un usage sûr et efficace des plantes médicinales. Sortis de leur contexte ou mal interprétés, ils peuvent conduire à une perte d’efficacité, voire à des intoxications.

Un exemple concret est celui du faux-tabac (Heliotropium arboreum), ou tahinu en tahitien, dont les feuilles sont traditionnellement utilisées dans le traitement de la ciguatera, une intoxication alimentaire liée à la consommation de poissons, en Polynésie et ailleurs dans le Pacifique. Des études scientifiques ont confirmé son activité neuroprotectrice et identifié la molécule responsable : l’acide rosmarinique. Mais une réinterprétation erronée de ces résultats a conduit certaines personnes à utiliser l’huile essentielle de romarin. Or, malgré son nom, cette huile ne contient pas d’acide rosmarinique. Résultat : non seulement le traitement est inefficace, mais il peut même devenir toxique, car les huiles essentielles doivent être manipulées avec une grande précaution.

Cet exemple illustre un double enjeu : la nécessité de préserver les savoirs traditionnels dans leur contexte culturel et celle de les valider scientifiquement pour éviter les dérives.

En ce sens, la médecine traditionnelle est indissociable des objectifs de développement durable : elle offre une approche biologique, sociale, psychologique et spirituelle de la santé, elle permet de maintenir les savoirs intergénérationnels, de valoriser la biodiversité locale et de réduire la dépendance aux médicaments importés.

C’est dans cette perspective que notre programme de recherche s’attache à identifier les menaces, proposer des solutions, par exemple en renforçant les liens intergénérationnels ou en intégrant les connaissances sur les plantes dans le système scolaire, et à valider scientifiquement les plantes les plus utilisées.

The Conversation

François Chassagne a reçu des financements de l’ANR (Agence Nationale de la Recherche)

ref. Plantes médicinales : valider la tradition, prévenir les risques – https://theconversation.com/plantes-medicinales-valider-la-tradition-prevenir-les-risques-269676

Et si la masturbation pouvait réduire les effets indésirables de la ménopause ?

Source: The Conversation – in French – By Jennifer Power, Principal Research Fellow, Australian Research Centre in Sex, Health and Society, La Trobe University

Selon une nouvelle étude états-unienne, la masturbation pourrait réduire les effets indésirables de la ménopause. Deon Black/Pexels

Une étude récente relayée dans le monde entier suggère que la masturbation pourrait atténuer certains symptômes désagréables chez les femmes en périménopause ou ménopause. Si cette attention médiatique peut surprendre, c’est sans doute parce que la masturbation reste peu évoquée, surtout chez les femmes plus âgées, et apparaît ici comme une stratégie inédite – voire audacieuse – de soulagement. Mais cette pratique peut-elle réellement améliorer les troubles liés à la ménopause ?


Selon une étude qui a suscité l’intérêt des médias dans le monde entier, une femme périménopauée et ménopausée sur dix se masturbe pour adoucir (soulager) les symptômes de la ménopause.

Cette attention s’explique sans doute par le fait que la masturbation est une méthode nouvelle – et peut-être un peu audacieuse – pour soulager les symptômes désagréables de la ménopause, tandis que les femmes, à partir d’un certain âge, sont souvent perçues comme asexuées.

La masturbation soulage-t-elle vraiment les effets indésirables, comme le suggère l’étude publiée dans la revue scientifique américaine Menopause ? Examinons la solidité des preuves.

Les bienfaits de la masturbation pour la santé

L’étude, menée aux États-Unis par des chercheurs du Kinsey Institute de l’Université de l’Indiana – l’un des instituts de recherche les plus reconnus dans le domaine du sexe et des relations –, a été financée par la société de sex-toys Womanizer.

Les chercheurs ont interrogé un échantillon représentatif de 1 178 femmes âgées de 40 à 65 ans, en périménopause et ménopause.

Celles ayant constaté des changements dans leurs règles tout en ayant eu au moins une menstruation durant l’année précédente ont été classées comme périménopausées, tandis que celles n’ayant plus eu de règles depuis un an ou plus ont été classées comme ménopausées.

Environ quatre femmes sur cinq ont déjà pratiqué la masturbation. Parmi elles, environ 20 % ont déclaré qu’elle soulageait leurs symptômes dans une certaine mesure. Chez les femmes en périménopause, les symptômes les plus atténués concernaient les troubles du sommeil et l’irritabilité. Chez un petit nombre de femmes ménopausées, la masturbation semblait surtout aider à réduire les inconforts sexuels, les ballonnements et les mictions douloureuses.

Ces résultats rejoignent ceux d’études antérieures montrant que la masturbation jusqu’à l’orgasme peut aider à réduire l’anxiété et la détresse psychologique, améliorer le sommeil et réduire les inconforts sexuels.

Toutefois, les recherches portant sur les bienfaits de la masturbation – sur la santé, la vie sociale, les relations ou le soulagement des symptômes de la ménopause – restent rares.

Nous ne savons donc pas précisément par quels mécanismes la masturbation pourrait améliorer ces symptômes. Les chercheurs avancent néanmoins que les effets relaxants de l’orgasme et la libération d’endorphines peuvent améliorer l’humeur, favoriser le sommeil et réduire les irritations et les douleurs lors des rapports sexuels. L’afflux sanguin induit par la masturbation au niveau de la zone génitale serait en effet de nature à améliorer les symptômes, à redonner de l’élasticité aux tissus et à réduire la sécheresse vaginale.

Un petit nombre de femmes ont toutefois indiqué que la masturbation avait aggravé leurs symptômes, sans que les raisons ne soient claires.

La masturbation reste stigmatisée

La masturbation n’est généralement plus considérée comme un péché ou un acte dangereux. Mais elle demeure stigmatisée. Les femmes, en particulier, l’associent souvent à quelque chose de honteux et ont tendance à en parler peu. La stigmatisation et l’invisibilité qui l’entourent expliquent qu’elle soit rarement étudiée dans des recherches cliniques.

Il en découle un manque de preuves concernant son efficacité pour soulager les symptômes de la ménopause, surtout en comparaison avec d’autres interventions non médicales, telles que l’activité physique ou la réduction du stress.

L’étude états-unienne montre d’ailleurs que les femmes s’appuient beaucoup plus volontiers sur des stratégies validées scientifiquement – activité physique, alimentation, gestion du stress, que sur la masturbation, même si beaucoup n’avaient probablement jamais envisagé cette dernière comme une option.

La masturbation ne convient pas à tout le monde

La masturbation est gratuite, relativement simple et, pour la plupart des femmes, agréable. Il n’y a donc aucune raison de ne pas la promouvoir comme une stratégie accessible pouvant soulager les symptômes chez certaines femmes. Mais la réalité est plus complexe : certaines rencontrent des obstacles.

Toutes les femmes ne se masturbent pas et ne trouvent pas forcément la pratique plaisante. Près d’une femme sur cinq interrogée dans l’étude américaine n’avait jamais pratiqué la masturbation. Ce chiffre, plus élevé chez les femmes plus âgées et ménopausées, reflète peut-être un changement générationnel dans les attitudes. Certaines participantes évoquaient des réticences morales ou religieuses.

D’autres études ont également montré qu’un nombre significatif de femmes ne se masturbent pas. Il peut y avoir de nombreuses raisons à cela, allant du manque de désir à un manque d’intimité ou de « temps pour soi ». Les femmes plus âgées peuvent rencontrer des obstacles physiques complexes : baisse de libido, mobilité réduite, douleur, etc.

Le silence et la stigmatisation entourant la masturbation rendent également difficile pour les professionnels de santé d’aborder ce sujet. L’étude américaine révèle ainsi que presque toutes les participantes n’avaient jamais parlé de masturbation avec un médecin.

Pourtant, beaucoup se sont montrées ouvertes à l’idée : environ 56 % des femmes en périménopause seraient prêtes à inclure la masturbation à leur routine bien-être si le médecin le leur conseillait.

La masturbation comme nouvelle stratégie

Même s’il n’existe aucune garantie que la masturbation soulagera les symptômes de la ménopause chez toutes les femmes, la proposer comme piste ne présente pas de risque : il s’agit de la pratique sexuelle la plus sûre qui soit.

Nous parlons peu de la masturbation, surtout chez les femmes d’un certain âge. En montrant que la majorité d’entre elles s’y adonnent et que cela peut offrir des effets bénéfiques sur la santé, cette étude représente une contribution. Importante et novatrice.

The Conversation

Jennifer Power a reçu des financements de l’Australian Research Council et du ministère australien de la Santé, du Handicap et du Vieillissement, et a précédemment reçu des financements de ViiV Healthcare et Gilead Sciences pour des projets sans rapport avec ce sujet.

ref. Et si la masturbation pouvait réduire les effets indésirables de la ménopause ? – https://theconversation.com/et-si-la-masturbation-pouvait-reduire-les-effets-indesirables-de-la-menopause-270716

Jane Austen’s happiness was complicated – her last heroine in Persuasion knew why

Source: The Conversation – UK – By Anna Walker, Senior Arts + Culture Editor, The Conversation

Summer Evening on the Southern Beach by Peder Severin Krøyer (1893). Skagens Museum

Jane Austen’s Paper Trail is a podcast from The Conversation celebrating 250 years since the author’s birth. In each episode, we’ll be investigating a different aspect of Austen’s personality by interrogating one of her novels with leading researchers. Along the way, we visit locations important to Austen to uncover a particular aspect of her life and the times she lived in. In episode 6, we explore whether Jane was happy, using her last published novel, Persuasion, as our guide.

Given that happy endings in Jane Austen’s novels chiefly revolve around a love match with the desired hero, some might conclude that as Austen remained a lifelong spinster, happiness must have eluded her. But this groundbreaking writer was a woman who filled her life with meaning through interests, friendships, socialising, travel, and most of all, a purpose.

The Cobb in Lyme Regis
The Cobb in Lyme Regis remains much as Austen would have known it.
Nada Saadaoui, CC BY-SA

Of course Austen had her fair share of worries. This was especially true after her father died, and she, her mother and her sister Cassandra found themselves in much reduced circumstances in less salubrious lodgings in Bath and then Southampton. A life of genteel poverty was leavened by her close relationships with the women in her life, including her good friends Martha Lloyd and Anne Sharp, a fellow writer with whom Austen could discuss the business of writing.

Much like her lovelorn heroine Anne Elliot, Austen had little affection for Bath. She missed the verdant Hampshire countryside of her youth and found the city oppressive, despite its lively social whirl. After eight years she returned to her beloved county when her brother Edward offered his mother and sisters a house on his estate at Chawton.

Here the women settled into a more comfortable life, allowing Austen the space and peace to write. It was at Chawton in 1815 that she wrote her final novel, Persuasion – the story of happiness lost and regained. The world-weary Anne Elliot, whose bloom has withered and is considered past her prime at 27, is still pining for Frederick Wentworth, the man she was persuaded to give up years before, when he re-enters her life as a dashing naval captain.

In the sixth episode of Jane Austen’s Paper Trail, Jane Wright is joined by Nada Saadaoui of the University of Cumbria, whose research examines Austen’s depiction of walking in Romantic-era English landscapes, to answer the question: was Jane happy?

A seaside landscape
Jane Wright and Nada Saadaoui walked in Austen’s footsteps in Lyme Regis.
Jane Wright, CC BY-SA

Austen’s abiding love of walking is reflected in the character of Anne, who finds restoration and renewal in the act. Taking in the sea air at the Cobb in Lyme Regis, the two explore what this coastal Dorset town meant to Austen, and how it inspired the pivotal scene in Persuasion where Anne and Wentworth reignite the spark of their connection.

“In walking and being out of doors, these characters open themselves up to transformation,” says Saadaoui, “and we see, especially for Anne, that this walk along the Cobb becomes a walk back to herself – to her strength, her voice, her true self, and her happiness.”

Painting of Jane Austen with her back to us
A portrait of Austen painted by her sister Cassandra during one of their visits to Lyme Regis.
Wiki Commons

Later on, Anna Walker sits down with two more Austen experts – John Mullan, professor of literature at University College London, and Freya Johnston, professor of English at the University of Oxford – to comb through what clues Persuasion offers about Austen’s own happiness.

Johnston has studied Austen’s remaining letters closely. “Quite often [she] sounds angry. She also sounds quite bitter … but there is also happiness in the letters. Certainly a degree of pride in her achievements as an author and just an enjoyment of writing.”

Mullan believes Austen also derived happiness from her family: “I think if you could beam yourself down to an Austen family gathering, [you’d find that] they were a really rather terrific family. I think that they were open-minded, intelligent, humorous, optimistic people … they valued Jane’s talents and her intelligence and enjoyed hearing her read bits of her writing to them. And I think that that one can’t overestimate how important that must have been to her.”

Listen to episode 6 of Jane Austen’s Paper Trail wherever you get your podcasts. And if you’re craving more Austen, check out our Jane Austen 250 page for more expert articles celebrating the anniversary.

You can also sign up to receive a free Jane Austen 250 ebook from The Conversation, bringing together a collection of our articles celebrating her life and works.

This is the last episode of Jane Austen’s Paper Trail – however we will be running a special Q&A episode in January where you can put your questions to our panel of experts. Please send your questions to podcast@theconversation.com


Disclosure statement

Nada Saadaoui, John Mullan and Freya Johnston do 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.


Jane Austen’s Paper Trail is hosted by Anna Walker with reporting from Jane Wright and Naomi Joseph. Senior producer and sound designer is Eloise Stevens and the executive producer is Gemma Ware. Artwork by Alice Mason and Naomi Joseph.

Listen to The Conversation Weekly via any of the apps listed above, download it directly via our RSS feed or find out how else to listen here.

The Conversation

ref. Jane Austen’s happiness was complicated – her last heroine in Persuasion knew why – https://theconversation.com/jane-austens-happiness-was-complicated-her-last-heroine-in-persuasion-knew-why-270591

Guinea-Bissau coup: election uncertainty has triggered military takeovers before

Source: The Conversation – Africa (2) – By Salah Ben Hammou, Postdoctoral Research Associate, Rice University

Guinea-Bissau has had nine attempted coups and five successful ones since its independence in September 1973. Salah Ben Hammou, a researcher with a focus on the politics of military coups, explains that the coup on 26 November 2025 appears to have followed earlier patterns of military intervention. It undermines Guinea-Bissau’s already fragile efforts to stabilise democratic governance.


How does the latest coup fit into Guinea-Bissau’s history of military takeovers?

This latest episode fits into a pattern of electoral coups that the country has experienced in the last two decades. In 2003 and 2012 the armed forces intervened at moments of electoral uncertainty.

The 26 November coup followed the same logic. It came just one day before the electoral commission was due to release the results of the 23 November presidential election, a contest already mired in controversy. Major opposition parties had been barred from running and President Umaro Sissoco Embaló faced accusations of overstaying his mandate. Both candidates claimed victory before any official results were announced.

Given this backdrop, the coup’s timing strongly suggests that the intervention was intended to preempt or nullify one potential outcome: the victory of opposition candidate Fernando Dias da Costa.

Many observers suspect that Embaló may have helped instigate or tacitly approved the military’s move to prevent an opposition victory.

There is still no definitive evidence of Embaló’s role. But incumbents have, in some cases, instigated coups against their own governments to void unfavourable election outcomes or preempt mass unrest. Sudan’s 1958 coup and Bolivia’s 1951 episode are classic examples.

What are the implications of the coup?

The coup undermines Guinea-Bissau’s already fragile efforts to stabilise democratic governance in two key ways.

First, it entrenches the military as the ultimate arbiter of political power, privileging the barracks over the ballot box. Once the armed forces are viewed – by incumbents, opposition forces, or the public – as a legitimate referee in political disputes, incentives shift. Instead of resolving conflicts through elections or courts, political competitors are more likely to seek military intervention when outcomes appear uncertain or unfavourable. This dynamic has long plagued Guinea-Bissau, and the latest coup reinforces it.

Second, and closely related, by effectively vetoing a core democratic process, the coup deepens the institutional backsliding already underway. In the months leading up to the vote, Guinea-Bissau had seen the exclusion of major opposition parties, disputes over term limits, and allegations of presidential overreach. The military’s intervention now entrenches these anti-democratic practices.

Whether or not Embaló played a direct role, the signal is clear: electoral rules and constitutional procedures can be overridden by force when they are inconvenient. The new junta’s reliance on Embaló’s allies to staff the new government further suggests continuity, not rupture, from the previous administration.

Economically, the coup is unlikely to benefit the general population. Nearly 70% live below the poverty line, making it one of the poorest countries in the world. Instability deters foreign investment, disrupts trade and stalls development projects. Even recent gains in the cashew industry, around 5.1% this year, risk being undermined.

What are the regional implications of the coup?

For anyone following developments in west Africa, and the continent more broadly, over the last five years, Guinea-Bissau’s latest coup will come as no great surprise. It joins a growing roster of countries under military rule. Each successful takeover in this so-called coup wave sends a clear signal: such interventions are possible and, in some contexts, tolerated.

Yet the broader impact will hinge on the junta’s next moves. It is not just the initial seizure of power that matters. Jonathan Powell and I have highlighted a pattern in which military rulers now remain in power for long periods compared with coups in the early 2000s. Transitional timelines, like the one-year promise announced by Guinea-Bissau’s junta, are increasingly symbolic rather than binding.

As I noted earlier this year in Foreign Policy, efforts to consolidate power, from delaying elections to manipulating them, also embolden other junta leaders across the region.

Guinea-Bissau’s military leaders are likely to study the strategies of their counterparts in west Africa and adopt them. In turn, the tactics they employ will provide a template for others. This type of learning is what will continue to solidify the return to military rule.

What should Ecowas and the African Union do?

Coups are rarely isolated events; they are usually symptoms of deeper political challenges. In Guinea-Bissau, the environment leading up to the coup, marked by Embaló’s efforts to undermine the electoral process, largely went unchecked. That created conditions that made military intervention more likely.

Regional organisations like Ecowas also face real constraints in addressing these challenges. Embaló threatened to expel Ecowas mediators attempting to negotiate a resolution to the electoral timeline. The same constraints are usually present after coups take hold.

That said, Ecowas and the African Union cannot afford to look away from post-coup developments. Every step the junta takes, whether shaping electoral timelines or managing opposition activity, must be scrutinised.

Both organisations should coordinate a unified diplomatic approach alongside other regional actors to secure clear, credible commitments to free and fair elections. Any attempts to delay the transition, manipulate political competition, or suppress dissent must be met with swift and meaningful consequences.

A key component of this strategy should be a ban on electoral participation for anyone involved in the coup. Existing mechanisms already allow for such measures, but their effectiveness depends on consistent application. Regional organisations have yet to do that.

Without such consistency, coups carry minimal consequences. And those who orchestrate them continue to profit from their actions.

The Conversation

Salah Ben Hammou 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. Guinea-Bissau coup: election uncertainty has triggered military takeovers before – https://theconversation.com/guinea-bissau-coup-election-uncertainty-has-triggered-military-takeovers-before-271368

Benin’s failed coup: three factors behind the takeover attempt

Source: The Conversation – Africa (2) – By John Joseph Chin, Assistant Teaching Professor of Strategy and Technology, Carnegie Mellon University

Military elements attempted to topple Benin’s government in early December 2025. However, unlike other coups across the Sahel and west Africa since 2020, this bid triggered a military response from Benin’s neighbours.

Benin is a west African state of 14.8 million people bordered by Togo, Burkina Faso, Niger and Nigeria.

Responding to two requests for assistance from the government of President Patrice Talon, Nigeria deployed fighter jets and the Economic Community of West African States (Ecowas) deployed elements of its standby force to target and dislodge the pro-coup forces.

Ecowas intervention likely played an important role in undermining the coup’s momentum and restoring order. The dozen or so putschists scored early tactical successes. They captured and broadcast from the national television station, occupied a military camp, and even took the two senior-most army officers hostage. But once Ecowas intervened militarily, any fence-sitters concluded that loyalists would prevail. Rather than a broad-based uprising, only 14 were arrested with a few plotters still at large.

I’m a scholar who maintains the Colpus dataset of coups and I have documented the history of post-second world war coups. As part of this work, I have sought to document the complex causes and effects of Africa’s post-2020 “epidemic of coups”, now entering its fifth year.

Though details remain scant on the motives of the coup plotters led by Lt. Col. Pascal Tigri, three structural factors likely contributed to the latest coup attempt:

From democratic backsliding to democratic u-turn?

Benin does not have a history of recent coups. It had not suffered a bona fide coup attempt since January 1975.

In the first 15 years after independence from France in 1960, Dahomey (as the country was then called) experienced nine coup attempts, making it one of the most coup-prone countries in sub-Saharan Africa during the early Cold War period.

However, political instability through the early 1970s gave way to the stable and durable personalist regime of Mathieu Kérékou (1972-1990). This was followed by electoral democracy after the Cold War.

Until recently, Benin had been heralded as one of Africa’s “democratic outliers” and success cases of democratic survival despite challenging conditions. Though poor, Benin has seen decades of improving average living standards. Economic growth in 2025 was 7.5%; the latest unrest cannot be blamed on poverty or an economic crisis.

However, data on three key dimensions of democracy shows that although electoral contestation and participation have endured, constraints on the executive (and thus liberal democracy overall) have declined in Benin since Talon’s election as president in 2016.

According to autocratic regime data from US political scientists Barbara Geddes, Joe Wright and Erica Frantz as well as the Varieties of Democracy (V-Dem) project (which surveys experts about democracy worldwide), Benin slipped back into an electoral autocracy in 2019. That is when opposition candidates were prevented from competing in parliamentary elections. The polls were marred by repression of mass protests and an internet shutdown.

In 2021, an electoral boycott led to Talon’s easy re-election.

V-Dem data show a very partial and incomplete democratic rebound since 2022. The opposition was allowed to compete in the January 2023 parliamentary elections. And earlier this year Talon confirmed that he would not seek an unconstitutional third term.

The potential for a coup, however, was foreshadowed last fall when the regime alleged that it had uncovered a coup plot involving a presidential hopeful in 2026. Last month, parliament’s vote to create a Senate was condemned by the opposition as allowing Talon a means to influence affairs after he steps down.

With the main opposition party barred from running in next year’s presidential election, Talon is expected to hand off power to his ally and finance minister, Romuald Wadagni.

Though the political leanings of Tigri and coup plotters remain unclear, Tigri claimed to seek to “free the people from dictatorship”.

The coupmakers also presumably sought to block the upcoming 2026 parliamentary and presidential elections.

A growing jihadist threat

Among the coup leaders’ key complaints was Talon’s mismanagement of the country. In particular, they cited “continuing deterioration of the security situation in northern Benin and “the ignorance and neglect of the situation of our brothers in arms who have fallen at the front” due to worsening jihadist violence.

A number of coups in nearby countries since 2020 have been preceded by rising levels of political violence and deepening insecurity born of jihadist insurgencies. That was certainly the case in Mali, Burkina Faso and to a lesser extent Niger.

Since last year, it has been clear that the jihadist violence was spilling over from Sahel neighbours such as Burkina Faso and Niger into the borderlands of west Africa. This included Benin’s north. ACLED data show a major increase in political violence events since 2022. And a spike in political fatalities in 2024:

Much of this increased violence is attributable to the advance of operations by the al-Qaida affiliated group Jama’at Nusrat al-Islam wal-Muslimin (JNIM). The group also managed to launch its first fatal attack in Nigeria at the end of October.




Read more:
Nigeria’s new terror threat: JNIM is spreading but it’s not too late to act


Russia has become the primary security partner for the Sahel Alliance. The defence pact was signed in 2023 by post-coup juntas of Burkina Faso, Mali and Niger to defeat jihadists and maintain power.

Nevertheless, Benin has continued to rely on western security partners to aid its counter-insurgency efforts and bolster border security. Notably, Benin continues to welcome military cooperation with France. Since 2022 Paris has pledged greater military aid to combat terrorism.

In September, US Africa Command commander General Dagvin Anderson visited Benin to underscore cooperation to oppose terrorism.

During the coup attempt, Tigri reportedly warned against French intervention and railed against “imperialism”. The speech reportedly ended with the phrase “The Republic or Death”, which echoes the new motto of Burkina Faso’s junta.

This suggests that the coup makers may have been inspired by others in the Sahel.

Risk of the coup belt expanding

The Benin events mark the third coup attempt and first failed coup this year in the Sahel region. There have been 17 coup attempts in Africa since 2020, including 11 successful coups. This makes the African coup belt stretching across the Sahel and west Africa the global epicentre of coups.




Read more:
Africa’s power grabs are rising – the AU’s mixed response is making things worse


West Africa’s latest “copycat” coup attempt was condemned by the African Union, European Union and Ecowas. Yet it was praised by pro-Russian social media accounts, reflecting a growing cleavage between the Russia-aligned juntas of the Sahel Alliance and the remaining Ecowas-aligned civilian regimes of west Africa.




Read more:
Coups in west Africa have five things in common: knowing what they are is key to defending democracy


Although Nigeria-led Ecowas threatened military intervention after the coup in Niger in July 2023, the regional body only actually militarily intervened to defeat the coup attempt in Benin. Nigeria, it appears, has drawn a line in the sand to retain a buffer from further instability – including JNIM operations. On the same day of the coup attempt in Benin, it was reported that Nigeria was seeking greater aid from France to combat insecurity.

The Conversation

John Joseph Chin 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. Benin’s failed coup: three factors behind the takeover attempt – https://theconversation.com/benins-failed-coup-three-factors-behind-the-takeover-attempt-271540

PFAS in pregnant women’s drinking water puts their babies at higher risk, study finds

Source: The Conversation – USA (2) – By Derek Lemoine, Professor of Economics, University of Arizona

Studies show PFAS can be harmful to human health, including pregnant women and their fetuses. Olga Rolenko/Moment via Getty Images

When pregnant women drink water that comes from wells downstream of sites contaminated with PFAS, known as “forever chemicals,” the risks to their babies’ health substantially increase, a new study found. These risks include the chance of low birth weight, preterm birth and infant mortality.

Even more troubling, our team of economic researchers and hydrologists found that PFAS exposure increases the likelihood of extremely low-weight and extremely preterm births, which are strongly associated with lifelong health challenges.

What wells showed us about PFAS risks

PFAS, or perfluoroalkyl and polyfluoroalkyl substances, have captured the attention of the public and regulators in recent years for good reason. These man-made compounds persist in the environment, accumulate in human bodies and may cause harm even at extremely low concentrations.

Most current knowledge about the reproductive effects of PFAS comes from laboratory studies on animals such as rats, or from correlations between PFAS levels in human blood and health outcomes.

Both approaches have important limitations. Rats and humans have different bodies, exposures and living conditions. And independent factors, such as kidney functioning, may in some cases be the true drivers of health problems.

We wanted to learn about the effects of PFAS on real-world human lives in a way that comes as close as possible to a randomized experiment. Intentionally exposing people to PFAS would be unethical, but the environment gave us a natural experiment of its own.

We looked at the locations of wells that supply New Hampshire residents with drinking water and how those locations related to birth outcomes.

We collected data on all births in the state from 2010 to 2019 and zoomed in on the 11,539 births that occurred within 3.1 miles (5 kilometers) of a site known to be contaminated with PFAS and where the mothers were served by public water systems. Some contamination came from industries, other from landfills or firefighting activities.

A conceptual illustration shows how PFAS can enter the soil and eventually reach groundwater, which flows downhill. Industries and airports are common sources of PFAS. The homes show upstream (left) and downstream (right) wells.
Melina Lew

PFAS from contaminated sites slowly migrate down through soil into groundwater, where they move downstream with the groundwater’s flow. This created a simple but powerful contrast: pregnant women whose homes received water from wells that were downstream, in groundwater terms, from the PFAS source were likely to have been exposed to PFAS from the contaminated site, but those who received water from wells that were upstream of those sites should not have been exposed.

Using outside data on PFAS testing, we confirmed that PFAS levels were indeed greater in “downstream” wells than in “upstream” wells.

The locations of utilities’ drinking water wells are sensitive data that are not publicly available, so the women likely would not have known whether they were exposed. Prior to the state beginning to test for PFAS in 2016, they may not have even known the nearby site had PFAS.

PFAS connections to the riskiest births

We found what we believe is clear evidence of harm from PFAS exposure.

Women who received water from wells downstream of PFAS-contaminated sites had on average a 43% greater chance of having a low-weight baby, defined as under 5.5 pounds (2,500 grams) at birth, than those receiving water from upstream wells with no other PFAS sources nearby. Those downstream had a 20% greater chance of a preterm birth, defined as before 37 weeks, and a 191% greater chance of the infant not surviving its first year.

Per 100,000 births, this works out to 2,639 additional low-weight births, 1,475 additional preterm births and 611 additional deaths in the first year of life.

Looking at the cases with the lowest birth weights and earliest preterm births, we found that the women receiving water from wells downstream from PFAS sources had a 180% greater chance of a birth under 2.2 pounds (1,000 grams) and a 168% greater chance of a birth before 28 weeks than those with upstream wells. Per 100,000 births, that’s about 607 additional extremely low-weight births and 466 additional extremely preterm births.

PFAS contamination is costly

When considering regulations to control PFAS, it helps to express the benefits of PFAS cleanup in monetary terms to compare them to the costs of cleanup.

Researchers use various methods to put a dollar value on the cost of low-weight and preterm births based on their higher medical bills, lower subsequent health and decreased lifetime earnings.

We used the New Hampshire data and locations of PFAS-contaminated sites in 11 other states with detailed PFAS testing to estimate costs from PFAS exposure nationwide related to low birth weight, preterm births and infant mortality.

The results are eye-opening. We estimate that the effects of PFAS on each year’s low-weight births cost society about US$7.8 billion over the lifetimes of those babies, with more babies born every year.

We found the effects of PFAS on preterm births and infant mortality cost the U.S. about $5.6 billion over the lifetimes of those babies born each year, with some of these costs overlapping with the costs associated with low-weight births.

An analysis produced for the American Water Works Association estimated that removing PFAS from drinking water to meet the EPA’s PFAS limits would cost utilities alone $3.8 billion on an annual basis. These costs could ultimately fall on water customers, but the broader public also bears much of the cost of harm to fetuses.

We believe that just the reproductive health benefits of protecting water systems from PFAS contamination could justify the EPA’s rule.

Treating PFAS

There is still much to learn about the risks from PFAS and how to avoid harm.

We studied the health effects of PFOA and PFOS, two “long-chain” species of PFAS that were the most widely used types in the U.S. They are no longer produced in the U.S., but they are still present in soil and groundwater. Future work could focus on newer, “short-chain” PFAS, which may have different health impacts.

A woman holding a small child fills a glass with water.
If the water utility isn’t filtering for PFAS, or if that information isn’t known, people can purchase home water system filters to remove PFAS before it reaches the faucet.
Compassionate Eye Foundation/David Oxberry via Getty Images

PFAS are in many types of products, and there are many routes for exposure, including through food. Effective treatment to remove PFAS from water is an area of ongoing research, but the long-chain PFAS we studied can be removed from water with activated carbon filters, either at the utility level or inside one’s home.

Our results indicate that pregnant women have special reason to be concerned about exposure to long-chain PFAS through drinking water. If pregnant women suspect their drinking water may contain PFAS, we believe they should strongly consider installing water filters that can remove PFAS and then replacing those filters on a regular schedule.

The Conversation

Ashley Langer receives funding from the National Science Foundation.

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

ref. PFAS in pregnant women’s drinking water puts their babies at higher risk, study finds – https://theconversation.com/pfas-in-pregnant-womens-drinking-water-puts-their-babies-at-higher-risk-study-finds-270051

Gen Z is burning out at work more than any other generation — here’s why and what can be done

Source: The Conversation – Canada – By Nitin Deckha, Lecturer in Justice Studies, Early Childhood Studies, Community and Social Services and Electives, University of Guelph-Humber

Gen Z workers are reporting some of the highest burnout levels ever recorded, with new research suggesting they are buckling under unprecedented levels of stress.

While people of all age levels report burnout, Gen Z and millennials are reporting “peak burnout” at earlier ages. In the United States, a poll of 2,000 adults found that a quarter of Americans are burnt out before they’re 30 years old.

Similarly, a British study measured burnout over an 18-month period after the COVID-19 pandemic and found Gen Z members were reporting burnout levels of 80 per cent. Higher levels of burnout among the Gen Z cohort were also reported by the BBC a few years ago.

Globally, a survey covering 11 countries and more than 13,000 front-line employees and managers reported that Gen Z workers were more likely to feel burnt out (83 per cent) than other employees (75 per cent).

Another international well-being study found that nearly one-quarter of 18- to 24-year-olds were experiencing “unmanageable stress,” with 98 per cent reporting at least one symptom of burnout.

And in Canada, a Canadian Business survey found that 51 per cent of Gen Z respondents felt burnt out — lower than millennials at 55 per cent, but higher than boomers at 29 per cent and Gen X, at 32 per cent.

As a longstanding university educator of Gen Z students, and a father of two of this generation, the levels of Gen Z burnout in today’s workplace are astounding. Rather than dismissing young workers as distracted or too demanding of work-life balance, we might consider that they’re sounding the alarm of what’s broken at work and how we can fix it.


No one’s 20s and 30s look the same. You might be saving for a mortgage or just struggling to pay rent. You could be swiping dating apps, or trying to understand childcare. No matter your current challenges, our Quarter Life series has articles to share in the group chat, or just to remind you that you’re not alone.

Read more from Quarter Life:


What burnout really is

Burnout can vary from person to person and across occupations, but researchers generally agree on its core features. It occurs when there is conflict between what a worker expects from their job and what the job actually demands.

That mismatch can take many forms: ambiguous job tasks, an overload of tasks or not having enough resources or the skills needed to respond to a role’s demands.

In short, burnout is more likely to occur when there’s a growing mismatch between one’s expectations of work and its actual realities. Younger workers, women and employees with less seniority are consistently at higher risk of burnout.

Burnout typically progresses across three dimensions. While fatigue is often the first noticeable symptom of burnout, the second is cynicism or depersonalization, which leads to alienation and detachment to one’s work. This detachment leads to the third dimension of burnout: a declining sense of personal accomplishment or self-efficacy.

Why Gen Z is especially vulnerable to burnout

Several forces converge to make Gen Z particularly susceptible to burnout. First, many Gen Z entered the workforce during and after the COVID-19 pandemic.

It was a time of profound upheaval, social isolation and changing work protocols and demands. These conditions disrupted the informal learning that typically happens through everyday interactions with colleagues that were hard to replicate in a remote workforce.

Second, broader economic pressures have intensified. As American economist Pavlina Tcherneva argues, the “death of the social contract and the enshittification of jobs” — the expectation that a university education would result in a well-paying job — have left many young people navigating a far more precarious landscape.

The intensification of economic disruption, widening inequality, increasing costs of housing and living and the rise of precarious employment have put greater financial pressures on this generation.

A third factor is the restructuring of work that is taking place under artificial intelligence. As workplace strategist Ann Kowal Smith wrote in a recent Forbes article, Gen Z is the first generation to enter a labour market defined by a “new architecture of work: hybrid schedules that fragment connection, automation that strips away context and leaders too busy to model judgment.”

What can be done?

If you’re reading this and feeling burnt out, the first thing to know is that you’re not overreacting and you’re not alone. The good news is, there are ways to recover.

One of burnout’s most overlooked antidotes is combating the alienation and isolation it produces. The best way to do this is by building connection and relation to others, starting with work colleagues. This could be as simple as checking in with a teammate after a meeting or setting up a weekly coffee with a colleague.

In addition, it’s important to give up on the idea that excessive work is better work. Set boundaries at work by blocking out time in your calendar and clearly signalling your availability to colleagues.




Read more:
Managers can help their Gen Z employees unlock the power of meaningful work − here’s how


But individual coping strategies can only go so far. The more fundamental solutions must come from workplaces themselves. Employers need to offer more flexible work arrangements, including wellness and mental health supports. Leaders and managers should communicate job expectations clearly, and workplaces should have policies to proactively review and redistribute excessive workloads.

Kowal Smith has also suggested building a new “architecture of learning” in the workplace that includes mentorship, provides feedback loops and rewards curiosity and agility.

Taken together, these workplace transformation efforts could humanize the workplace, lessen burnout and improve engagement, even at a time of encroaching AI. A workplace that works better for Gen Z ultimately works better for all of us.

The Conversation

Nitin Deckha is a member of the Institute for Performance and Learning and the Canadian Community of Corporate Educators.

ref. Gen Z is burning out at work more than any other generation — here’s why and what can be done – https://theconversation.com/gen-z-is-burning-out-at-work-more-than-any-other-generation-heres-why-and-what-can-be-done-270237

Parental child abduction: why extending criminalisation is not the answer

Source: The Conversation – UK – By Allison Wolfreys, Lecturer in Law, The Open University

PrasitRodphan/Shutterstock

The government is proposing a change in the law on parental child abduction. The crime and policing bill, under consideration in parliament, would make it a crime for a parent to take their child on holiday and then not return them at the end of the agreed holiday period. This would be punishable by up to seven years’ imprisonment.

The government is attempting to remedy what could be seen as a gap in the law. But this approach fails to take into account what we know about the situations in which this kind of parental child abduction occurs. In many cases, it involves a mother fleeing domestic abuse with her children.

Parental child abduction happens when a child is taken to another country without the other parent’s knowledge or consent, or when one parent takes the children abroad for a holiday and keeps them overseas beyond the agreed holiday period. Currently, the recourse for parents left behind is contained in the 1980 Hague Convention on the Civil Aspects of Child Abduction.

This was created with the objective of minimising harm to children. It enables the left-behind parent to apply to the court in the country the children were taken to for their prompt return. The Convention remains the primary legal instrument of response, with 103 signatory member states.

The crime and policing bill currently before Parliament will leave the 1980 Convention untouched but bolster criminal sanctions against parents who take children by amending the Child Abduction Act 1984, which applies to England and Wales.

The 1984 Act made it an offence for a parent to take or send a child out of the jurisdiction without the other parent’s consent. The parent who took the children is sanctioned only if police pursue a complaint made by the left-behind parent, which is then subject to a decision by the Crown Prosecution Service to prosecute.

Silhouetted man and child
The key focus in existing legislation is the return of children.
KieferPix/Shutterstock

Now, the government seeks to strengthen criminal sanctions against parents who fail to return children. But the proposed seven years’ imprisonment does not align with what research and practice tells us about parental child abduction in 2025.

Profile of the abductor

There was little hard statistical data available on parental child abduction when the Hague Convention was created. However, the abduction of children was primarily seen as something done by fathers who were not the primary carer of their children.

The picture is now very different. Research conducted in 2015 found that 73% of taking parents were mothers, an increase from earlier years, and of these 91% are primary carers. My research and that of other scholars has found that domestic abuse features heavily in these cases. Essentially, these mothers are taking their children and attempting to escape an abusive situation. Research suggests that domestic abuse may be present in approximately 70% of child abduction cases.

If this amendment proceeds, then mothers who have fled overseas with their children to escape an abusive relationship may refuse to return for fear of prosecution. But through the mechanism set up under the Hague Convention, the children can still be ordered to go back. This proposed change in law takes no account of the impact on children of criminalising the parent who will most often be their primary carer. The potential criminalisation of primary carers will inevitably compound the trauma for children at the centre of these cases.

The reasons for parental child abduction are multifaceted and complex. The forum for resolving family law disputes is the family court, and punitive criminal sanctions are likely to cause harm to children. Furthermore, the potential criminalisation of mothers in the context of domestic abuse flies in the face of current government policy to support victims of abuse. It also fails to prioritise the individual needs of children caught up in parental conflict.

It is disappointing to note that the House of Commons has to date given scant attention to this proposed change to the law. It was not debated at report stage (when MPs have an opportunity to consider amendments to a bill).

Currently there are several members of the House of Lords with expertise in family law. Now that the bill has reached committee stage – a detailed examination of each line – in the House of Lords, I hope that they will draw attention to this issue and persuade others that the change in law should be abandoned. These complex cases should be left to the family court where they properly belong.

The Conversation

Allison Wolfreys 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. Parental child abduction: why extending criminalisation is not the answer – https://theconversation.com/parental-child-abduction-why-extending-criminalisation-is-not-the-answer-271019

Warm oceans seem to be turning even ‘weak’ cyclones into deadly rainmakers

Source: The Conversation – UK – By Ligin Joseph, PhD Candidate, Oceanography, University of Southampton

The final week of November was devastating for several South Asian countries. Communities in Sri Lanka, Indonesia and Thailand were inundated as Cyclones Ditwah and Senyar unleashed days of relentless rain. Millions were affected, more than 1,500 people lost their lives, hundreds are still missing, and damages ran into multiple millions of US dollars. Sri Lanka’s president even described it as the most challenging natural disaster the island has ever seen.

When disasters like this happen, the blame often falls on a failure in early warnings or poor preparedness. This was the case with major floods in Kerala, south India, in 2018, which devastated my hometown.

But this time, the forecasts were largely accurate; the authorities knew the storms were coming, yet the devastation was still immense.

So, if the forecasts were good enough, why were the impacts still so severe?

Weak winds, extreme rain

One emerging explanation is that these storms were not dangerous because of their winds, but because they produced unusually intense rainfall.

Graph of wind speeds
This graph of all cyclonic storms over the north Indian Ocean since 2001 shows Ditwah and Senyar weren’t particularly windy. (Wind speed measured in knots. 1 knot is about 1.15 mph or 1.85 kph)
Ligin Joseph (data: IBTrACS), CC BY-SA

Consider Cyclone Ditwah. Its peak winds were around 75 km/h (47 mph). That’s windy, but nothing special. In the UK, it would be classified merely as a “gale” rather than a “storm”. It was far weaker than the 220 km/h winds of the powerful 1978 cyclone that also struck Sri Lanka. Yet Ditwah still caused massive devastation.

What explains this apparent contradiction? It’s too early to say definitively, but climate change is likely a part of the story. Even when storms are not especially strong in wind terms, the amount of rain they carry is increasing.

A warmer atmosphere holds more water

A well established meteorological rule helps explain why. For every degree of global warming, the atmosphere can hold about 7% more moisture.

As the planet warms, the air above us becomes a larger reservoir, waiting to dump more water on us. When storms form, they can tap into this expanded supply, often in extremely short bursts. Even if wind speeds are modest, the rainfall alone can be catastrophic.

The oceans matter even more

Warming oceans play an even more powerful role, as cyclones draw their energy from warm ocean waters. Satellite data from late November shows just how warm the eastern Indian Ocean was, with large areas more than 1°C above normal during Ditwah and Senyar.

Coloured map of Indian Ocean and SE Asian seas
In the days before the cyclones formed (20–24 November), the oceans were even warmer than usual, creating conditions that could have fuelled and intensified the rainfall.
Ligin Joseph (Data: OISST; track positions are approximate), CC BY-SA

Such warm anomalies are no longer unusual. The oceans have absorbed more than 90% of the excess heat trapped by greenhouse gases, and long-term observations show a clear upward trend in ocean temperatures.

That doesn’t necessarily mean cyclones are becoming more frequent – their formation still depends on other ingredients, such as low wind shear (small differences in wind speed and direction with height) and the right atmospheric structure.

What warmer oceans do change, however, is the amount of energy available to any storm that does manage to form. When the ocean is warmer, cyclones have more fuel and evaporation increases, loading the atmosphere with moisture that can fall as intense rain once a storm develops. Even weak cyclones can therefore hold exceptional amounts of rain.

Coloured map of Indian Ocean and SE Asian seas
Evaporation averaged for 26–27 November. Ditwah especially travelled over warm waters supplying large amounts of moisture to the atmosphere.
Ligin Joseph (Data: ERA5), CC BY-SA

The winds near the surface help this process along. As they move across the ocean, they sweep away the moisture-filled air just above the water and replace it with drier air, allowing evaporation to continue. Put together, warmer oceans, higher evaporation, and an atmosphere that can store more moisture, these factors can significantly intensify the rainfall associated with cyclones.

Coastline hugging makes flooding worse

Local geography amplified these effects. Both Ditwah and Senyar formed unusually close to land and travelled along the coastline for an extended period. This meant they stayed over warm waters long enough to continuously draw moisture, but remained close enough to land to dump that moisture as intense rainfall almost immediately.

Cyclone Ditwah, in particular, moved slowly as it approached Sri Lanka. Slow-moving storms can be especially dangerous as they repeatedly dump rain over the same area. Even if winds are weak, this combination of warm seas, coastal proximity and slow forward speed can be devastating.

A new threat

These storms suggest that climate change – especially ocean warming – is reshaping the risks posed by cyclones. The most dangerous storms may no longer simply be the ones with the strongest winds, but also the ones with the most moisture.

Forecasting systems, including new AI-powered weather models, are getting better at predicting cyclone tracks and wind speeds. Yet rainfall-driven flooding remains far harder to forecast. As oceans continue to warm, governments and disaster agencies will need to prepare for storms that may be weak in wind but extreme in rain.

These insights are based on preliminary analysis and emerging scientific understanding. More detailed peer-reviewed studies will be needed to pinpoint exactly why Ditwah and Senyar produced such extreme rainfall. But the pattern that is emerging – weak cyclones delivering outsized floods in a warming world – must not be ignored.

The Conversation

Ligin Joseph receives funding from the UK’s Natural Environment Research Council (NERC).

ref. Warm oceans seem to be turning even ‘weak’ cyclones into deadly rainmakers – https://theconversation.com/warm-oceans-seem-to-be-turning-even-weak-cyclones-into-deadly-rainmakers-271550

Nigel Farage accused of breaking election spending laws – the situation explained

Source: The Conversation – UK – By Sam Power, Lecturer in Politics, University of Bristol

Nigel Farage has found himself in hot water over accusations that he failed to report that his 2024 election campaign in Clacton went over the spending limit of £20,660.72. Richard Everett, a former Reform councillor (who has since left the party – or been expelled, depending what you read), has submitted documents to the police.

Election spending in the UK is beyond complex. It is so hard to understand that it has been compared to a “Jane Austen-style intricate dance … all sorts of daring and dicey moves are permissible, provided you know precisely where to step and when, and how not to upset the crowds”.

Nowhere is this truer than when it comes to spending limits. There are, in fact, two spending limits for general elections (well, there’s actually more than two but let’s not go there). Each party has a certain amount to spend at the national level and each candidate has a spending limit for their constituency campaign. Candidate spending is money spent to promote their individual candidacy (or criticise a local opponent), party spending is more general material that promotes a party.

This is largely thanks to a historical quirk. Candidate spending has been limited since the Corrupt and Illegal Practices (Prevention) Act of 1883. And because national campaigning didn’t really exist back then, that was largely that. Things changed in 2000 when – alongside other reforms – limits were placed on national-level party spending, which by then was, by then, very much a thing.

Both spending limits vary, but the 20k limit for Clacton is a reasonable rule of thumb to extrapolate across other constituencies. Party spending limits, again as a rule of thumb, are £34.1 million (if a party stands across England, Scotland and Wales). So, quite a difference.

As you’d imagine, parties make all kinds of daring moves to get what looks an awful lot like candidate spending into their much larger national budgets. You might, for example, target national messages (so party spending) at target constituencies – and, as long as you don’t mention the candidate, that’s party spend.

You can still end up in hot water, though. Just ask the 30 or so Conservative MPs (and their staff) who were embroiled in an election expenses episode following the 2015 general election. In this instance the Tories drove a battle bus packed with activists drove around 33 target constituencies and reported most of their spending as party, rather than constituency, spending.

How bad is this for Farage?

With the police looking into the claim, there’s only so much one can say, but there are several reasons to think the Clacton spend is not going to be too much of a problem for team Farage. Firstly, there’s a very basic matter of the statute of limitations on cases of this kind. You only have a year to report suspected offences and we’re already more than a year out from the election.

While prosecutors can have that limit waived in certain circumstances, a further complication of electoral law is that candidate offences (for now) are managed by the police and party offences by the Electoral Commission. The police are very reluctant to get involved in party politics so it would be surprising if they actively pursued the case against Farage.

Signs reading 'vote Reform' planted on a roadside bank.
Reform campaign signs in Clacton in 2024.
Shutterstock/GregSawyer

We also don’t know how much more than his £20k limit Farage is accused of spending. If it’s a small amount, the Crown Prosecution Service (CPS) may not feel it in the public interest to pursue a case.

The burden of proof is also incredibly high. I suspect that the offence the CPS will be investigating is the same as the Tory battle bus affair, so 82(6) of the Representation of the People Act 1983. This states that “if a candidate or election agent knowingly makes the declaration required by this section falsely, he shall be guilty of a corrupt practice”. So, the CPS does not just have to show the overspend, it has to show that the candidate knew they were overspending.

There’s also the complicating factor that this is Farage’s constituency, and he effectively is the Reform party. Given that he is the face of all Reform campaigning, we have to wonder, truly, in this instance where candidate spending begins and party spending ends. Or, put differently, considering how easy it would be in theory to disguise candidate spending at party spending in these particular (and peculiar) circumstances you’d. Election law is a complicated dance after all, but this is little more than a two-step.

These headlines come at a tricky moment for Farage as he has faced over a week of allegations that he made racist comments during his school days. That said, I doubt there’ll be any great panic in Reform HQ. For one, even Everett has suggested that Farage was “blissfully unaware” of the omissions. If charges are brought, it will likely not be against him and therefore easily blamed on his local agent or other administrators.

Also, as I suggested way back in 2016, accounting just isn’t very sexy. Again, the battle bus saga is instructive here as it was genuinely big news at the time. Some even thought it had the potential to become the new expenses scandal. But it didn’t. One person was convicted, while everyone else was acquitted and moved on.

Attacking electoral law is also fertile ground for Farage. He has already turned a defence over racism allegations into an attack on his opponents, there’s very little to suggest he won’t do the same here. He and his supporters generally relish the prospect of a skirmish with the establishment.

This would be, put lightly, a shame. Election law is hard to understand and mistakes happen, but that doesn’t mean those enforcing it are pen pushers looking for wrongdoing to punish. We may well live in the age of the politics of grievance and hot air, but just this once it would be nice to let the process play out.

The Conversation

Sam Power has received funding from the Engineering and Physical Sciences Research Council and the Economic and Social Research Council.

ref. Nigel Farage accused of breaking election spending laws – the situation explained – https://theconversation.com/nigel-farage-accused-of-breaking-election-spending-laws-the-situation-explained-271546