Freeing poached wildlife ‘safely’ is a dangerous myth – new study

Source: The Conversation – UK – By Anna Nekaris, Professor of Ecology, Conservation and Environment, Anglia Ruskin University

The moment a cage door is opened and an animal released is often seen as the ultimate good news. When a captive wild animal is freed, the media often applauds, public support swells and donations to welfare charities surge.

But as a new study by myself and colleagues reveals, there is a dark side to returning animals to the wild.

Illegal trafficking in wildlife yields billions of dollars per year, making it one of the highest grossing illegal trades. It poses a serious risk to conservation, so it’s no wonder the confiscation of an illegally trafficked animal feels like a win.

One of the problems is that for many species, especially smaller species perceived as less charismatic, or less ecologically important, little is known what happens after the animal is set “free”.

In our new study published in Global Ecology and Conservation, my colleagues and I tracked nine individual animals of the endangered Bengal slow loris, a small primate with large round brown eyes found in tropical forests throughout southern Asia. We showed that the wild is not necessarily freedom. Seven of the nine animals died within weeks of release, most killed by resident slow lorises.

Ten species of the slow loris can be found from India to the Philippines. All are threatened by trade in various guises – including as pets and tourist photo props, traditional “medicines” and meat, and even black magic.

Despite being legally protected in all the countries where they live, trade in these nocturnal primates persists locally and internationally. It is fuelled in part by viral social media videos of smuggled lorises kept as pets. With their large eyes and teddy bear-like faces, they are seen as an adorable companion, with online videos inciting viewers to “want one”. They certainly do not make good pets – from scent marking every space with foul-smelling urine, to a bite that can kill a human.

Indeed, they are the only venomous primate, with sharp teeth used to inject venom into other lorises as a means of territorial defence. Often in trade these teeth are ripped out or clipped to make them “suitable pets”.

Despite the evolutionary uniqueness of the slow loris, only a handful of studies have been conducted in the wild. This creates a disconnect.

Welfare agencies and government agents are often pressured to release these primates to the wild. But a lack of funding, manpower and knowledge of their behaviour means most reintroductions of loris species do not follow international guidelines. For example, agencies must know which species they are releasing; slow loris species may look very similar but they are genetically and behaviourally unique. It’s almost impossible for non-experts to tell them apart.

Freedom or death trap?

In our study, the Bangladesh Forest Department allowed us to follow the fate of nine released Bengal slow lorises. The site, Lawachara National Park in the country’s northeast, has been used for relocating lorises for decades. With a high density of slow lorises in the area, conservationists recommend against more releases. A variety of sociopolitical and logistic factors, however, means that releases continue. For example, the fact that these releases are seen as good news stories.

Within ten days of release, three lorises died, with four others surviving only a few weeks more. For four of seven whose bodies could be examined, all died of fatal venomous bite wounds from resident lorises.

After eight months of study, the two survivors had not settled into a permanent area. Wild slow loris typically achieve this within a few months of dispersal, settling with a mate to raise families with for at least 12 years.

This suggests that even if an animal survives “getting back to the wild”, they may still struggle to find a permanent home. A species with extremely territorial behaviour, these “floating” individuals are often killed by resident slow lorises.

In Bangladesh, slow lorises are often “rescued” from agricultural areas, where they can live happily if the right food plants persist, because locals are not familiar with nocturnal animals and think they have “wandered in”. Thus, the forest that people perceive as a good place for them is alien, and one in which ultimately, returned lorises may never be able to find a home.

Other studies also have found high death rates or lack of “settling” of released slow lorises. Projects in Vietnam and Java have yielded similar results, including reintroduced lorises killing the resident animals, as well as animals starving to death in the new habitats.

Poor release practices have become so common that the IUCN Red List includes releases of slow lorises as one of the threats to their survival. Despite this increasing evidence, incidences of up to 65 lorises released at a single time are sometimes reported as good news.

Slow lorises are just one of many lesser-known mammals frequently traded and released. These animals are easy to pick up and hold because their strategy is sometimes to curl into a silent ball of terror, instead of biting. They may even be bought by tourists at wildlife markets and placed somewhere where the purchaser perceives to be wild.

Other examples include civets, otters and various monkeys. Indeed, in the case of Brazil’s marmosets, monkeys released by pet owners threaten to out-compete native species or mate with them, leading to hyrid offspring.

Close up of racoon like animal in cage
Civets are often sold in wildlife markets.
bastera rusdi/Shutterstock

This scenario is not exclusive to the tropics. In the UK, well meaning people often move hedgehogs and other animals long distances away from where they found them. However hedgehogs are homebodies who need to stay close to their favourite haunts, where they know where to find shelter and food.

As appealing as it is to put animals back to the wild, for many species, their only hope may truly be a lifetime in captivity. Even when these animals survive, their ecological role is lost.

The Conversation

Anna Nekaris receives funding from Plumploris e.V.

ref. Freeing poached wildlife ‘safely’ is a dangerous myth – new study – https://theconversation.com/freeing-poached-wildlife-safely-is-a-dangerous-myth-new-study-275586

Voici Epiaceratherium itjilik, le rhinocéros qui a vécu dans l’Arctique

Source: The Conversation – in French – By Danielle Fraser, Head & Research scientist, Palaeobiology, Canadian Museum of Nature & Adjunct Research Professor, Department of Biology, Carleton University

Les paléontologues du Musée canadien de la nature ont récemment étudié le fossile d’un rhinocéros. Ce qui est fascinant, c’est que ses restes ont été découverts sur l’île Devon, dans l’Arctique canadien.

Les mammifères, qui peuplent aujourd’hui presque tous les coins de la Terre, sont arrivés en Asie, en Europe et en Amérique du Nord par trois voies : le détroit de Béring et deux voies dans l’Atlantique Nord.

La plus connue d’entre elles, le pont continental de Béring, a permis le passage des premiers humains vers l’Amérique du Nord, il y a environ 20 000 ans, et a façonné la génétique des populations d’animaux, comme les ours, les lions et les chevaux.

Les deux autres routes, moins connues, traversaient l’Atlantique Nord : l’une partait de la péninsule scandinave vers le Svalbard et le Groenland, et l’autre de l’Écosse vers l’Islande, puis le Groenland et l’Arctique canadien.

Généralement, on considère que les animaux terrestres n’ont pas pu traverser l’Atlantique Nord durant l’Éocène inférieur, il y a environ 50 millions d’années, à une époque où le climat terrestre était plus chaud.

Les restes du rhinocéros arctique fournissent toutefois des preuves indiquant que les mammifères terrestres ont pu traverser l’Atlantique Nord en empruntant des ponts terrestres gelés bien plus récemment que l’Éocène inférieur.

Un rhinocéros dans l’Arctique

Danielle Fraser présente les recherches de son équipe sur le rhinocéros arctique. (Musée canadien de la nature).

Cette nouvelle espèce de rhinocéros a été découverte à partir d’un spécimen presque complet trouvé au site de Haughton, sur l’île Devon, au Nunavut. Il s’agit de sédiments lacustres formés dans un cratère d’impact d’astéroïde qui remonterait au début du Miocène, il y a environ 23 millions d’années.

Les sédiments du cratère Haughton ont permis de préserver des plantes, des mammifères et des oiseaux. La plupart des ossements du rhinocéros ont été récoltés dans les années 1980 par la paléontologue Mary Dawson et son équipe, puis d’autres éléments ont été prélevés par Natalia Rybczynski, Marisa Gilbert et leur équipe au cours des années 2010.

Le rhinocéros n’avait pas de corne, ce qui est courant chez les espèces de rhinocéros disparues. Il se distingue toutefois par des caractéristiques propres à des espèces beaucoup plus anciennes, comme des dents semblables à celles d’espèces datant de plusieurs millions d’années. Il présente également un cinquième orteil sur la patte avant, ce qui est rare chez les rhinocéros.

Une comparaison anatomique et une analyse évolutive suggèrent que le spécimen appartient à un genre existant, Epiaceratherium, que l’on a trouvé uniquement en Europe et en Asie occidentale. Pour nommer la nouvelle espèce, l’équipe a consulté Jarloo Kiguktak, un aîné d’Aujuittuq (Grise Fiord), la communauté autochtone la plus proche du cratère Haughton. Ensemble, ils l’ont baptisée Epiaceratherium itjilik. Itjilik, qui signifie « gel » ou « givré » en inuktitut, a été choisi en hommage à l’environnement arctique où le spécimen a été découvert.

Le plus surprenant est que l’analyse évolutive de l’équipe a montré qu’E. itjilik ressemble le plus à l’espèce européenne d’Epiaceratherium. Cela suggère que ses ancêtres auraient traversé l’Atlantique Nord pour passer de l’Europe à l’Amérique du Nord vers la fin de l’Éocène, il y a entre 38 et 33 millions d’années.

Des analyses biogéographiques ont par ailleurs révélé un nombre étonnamment élevé de traversées de l’Atlantique Nord par des rhinocéros, directement entre l’Europe et l’Amérique du Nord, dont certaines remontent à environ 20 millions d’années. Alors que la découverte d’une traversée aussi récente de l’Atlantique Nord était souvent considérée comme improbable, de nouvelles preuves géologiques proposent une toute autre histoire.

Comment les rhinocéros sont-ils arrivés dans l’Arctique ?

Aujourd’hui, plusieurs étendues d’eau larges et profondes empêchent les animaux terrestres de passer de l’Europe à l’Amérique du Nord. Les îles Féroé, l’Islande et le Groenland sont séparés par le chenal du banc des Féroé, le chenal Féroé-Shetland et le détroit du Danemark. Entre la péninsule scandinave, le Svalbard et le Groenland, on trouve la mer de Barents et le détroit de Fram. Les animaux terrestres auraient pu traverser au moins l’une de ces zones jusqu’au début de l’Éocène, il y a environ 50 millions d’années.

Cependant, des études récentes dressent un tableau plus complexe des changements géologiques dans cette région. Les estimations de la date de formation des différents chenaux qui séparent aujourd’hui les masses terrestres présentent une grande variabilité.

Une modélisation mathématique suggère qu’il y a encore 2,7 millions d’années, une région montagneuse aurait relié le Svalbard à l’Europe du Nord. De nouvelles données indiquent également que le détroit de Fram était étroit et peu profond jusqu’au début du Miocène, il y a environ 23 millions d’années. Le chenal Féroé-Shetland s’est probablement ouvert il y a entre 50 et 34 millions d’années, tandis que le chenal Féroé-Islande [JG1]et le détroit du Danemark auraient été submergés plus tard, il y a entre 34 et 10 millions d’années.

Cela suggère que les rhinocéros auraient pu marcher sur la terre ferme pendant au moins une partie de leur traversée de l’Atlantique Nord. Ils ont peut-être nagé sur de courtes distances entre les masses continentales, mais l’équipe a émis l’hypothèse que la glace marine saisonnière aurait pu faciliter leur déplacement.

La glace saisonnière

Il y a plus de 47 millions d’années, l’océan Arctique et les régions environnantes étaient libres de glace toute l’année. Des échantillons prélevés par carottage dans cette région (boue, sable et matière organique) contiennent des traces de débris transportés par la glace au cours de l’Éocène moyen, il y a entre 47 et 38 millions d’années, ce qui indique la présence de glace saisonnière.

Une autre carotte océanique, prélevée entre le Groenland et le Svalbard, recèle des débris transportés par la glace provenant de toute la région arctique, et datant de 48 à 26 millions d’années. Il apparaît donc que les animaux terrestres auraient pu traverser l’Atlantique Nord en empruntant des routes formées sur la terre ferme et sur la glace saisonnière.

Les fossiles de vertébrés provenant des îles qui composaient autrefois les ponts terrestres de l’Atlantique Nord sont extrêmement rares. Une grande partie de ces ponts étant aujourd’hui submergée, les preuves directes de la façon dont les animaux se sont répandus à travers l’Atlantique Nord pourraient avoir disparu.

Les études biogéographiques, comme celle menée par l’équipe du Musée canadien de la nature, montrent à quel point les découvertes arctiques bouleversent nos connaissances sur l’évolution des mammifères. Elles nous aident à mieux comprendre comment les animaux se sont déplacés sur notre planète.

La Conversation Canada

Danielle Fraser a reçu un financement du Conseil de recherches en sciences naturelles et en génie du Canada (CRSNG RGPIN-2018-05305). Natalia Rybczynski, coauteure de l’étude mentionnée dans cet article, a reçu un financement de la Fondation W. Garfield Weston. Mary Dawson, coauteure de l’étude, a reçu un financement de National Geographic pour ses travaux sur le terrain.

ref. Voici Epiaceratherium itjilik, le rhinocéros qui a vécu dans l’Arctique – https://theconversation.com/voici-epiaceratherium-itjilik-le-rhinoceros-qui-a-vecu-dans-larctique-274913

Contre le tabagisme, l’alcoolisme, l’insécurité routière… le marketing social en santé est plus efficace que la communication

Source: The Conversation – France in French (3) – By Karine Gallopel-Morvan, professeur santé publique, École des hautes études en santé publique (EHESP)

Le succès de campagnes de marketing social, comme le « Mois sans tabac », dont l’efficacité a été évaluée scientifiquement, montre comment cette stratégie peut se révéler payante pour déclencher des changements de comportements bénéfiques pour la santé. La restructuration annoncée de Santé publique France, qui met en œuvre les campagnes de prévention en santé, pourrait conduire à un recentrage vers la communication, au détriment du marketing social qui a pourtant fait ses preuves.


De nombreux pays s’appuient sur la démarche du marketing social pour élaborer des campagnes de prévention dont le but est de changer les comportements de santé. En France, cette mission est principalement assurée par Santé publique France, l’agence nationale de santé publique, dont un des rôles est d’« améliorer et protéger la santé des populations ».

Santé publique France intervient dans des domaines aussi variés que les déterminants de santé (tabac, alcool, drogues, nutrition, environnement, etc.), les maladies infectieuses (Covid-19, grippe…), la santé sexuelle, la santé mentale, les pathologies chroniques comme les cancers, le diabète, etc. L’agence a pleinement intégré le marketing social dès sa création, en 2016.

A l’époque, ce positionnement avait suscité des débats, notamment quant à sa valeur ajoutée par rapport aux campagnes de communication « classiques » qui avaient été mobilisées par le passé. Ce choix stratégique a pourtant permis à Santé publique France de développer des interventions de prévention plus efficaces pour déclencher des changements de comportement.

Depuis, d’autres acteurs, associatifs et publics, ont recours au marketing social. Par exemple, depuis 2020, le « Défi de janvier » (Dry January) vise à questionner individuellement et collectivement notre rapport à l’alcool et changer nos habitudes de consommation pour inciter à un changement de comportement vis-à-vis de ce produit. Cette initiative, qui connaît un succès croissant, est portée par un collectif d’associations. Elle a lieu tous les ans sans l’appui des pouvoirs publics.

Le marketing social : des techniques de marketing commercial appliquées à la santé

L’association des deux termes, « marketing » et « social », est née en 1971. Le marketing social consiste ainsi à transposer certaines techniques du marketing commercial à des programmes sociaux et de santé, dans l’objectif d’en améliorer l’efficacité en matière de changement de comportements.

Son principe fondamental repose sur une connaissance approfondie des publics cibles, afin d’adapter les interventions à leurs caractéristiques, leurs besoins et leurs contraintes. Cette compréhension s’appuie à la fois sur des enquêtes et les apports de la littérature scientifique, afin d’identifier les déterminants des comportements de santé et leurs leviers de modification.

Le marketing social prend également en compte l’environnement dans lequel s’inscrit l’intervention, notamment les facteurs concurrents du comportement promu, comme le marketing des industries du tabac, de l’alcool ou de l’alimentation ultratransformée. Ces pratiques commerciales “concourrentes” à la santé sont connues sous le terme de « déterminants commerciaux de la santé ». Le but sera ici de bloquer la publicité de ces firmes (avec des régulations et interdictions), ou d’apposer des avertissements sanitaires sur les publicités et packagings afin de contrer les messages marketing attractifs.

Le marketing social repose par ailleurs sur une segmentation des populations, donnant lieu à des programmes différenciés selon les spécificités des individus : âge, genre, environnement social, ancrage communautaire, niveau de littératie (niveaux de lecture, d’écriture et de compréhension des textes), etc.

« Mois sans tabac »,« Défi de janvier » et autres marques sociales

Si la campagne de marketing social est amenée à durer, il est opportun qu’elle s’appuie sur une marque qui aide à la mémoriser, à se l’approprier et à l’apprécier : « Mois sans tabac », le « Défi de janvier », ou encore Sam de la Sécurité routière sont des marques sociales connues de toutes et tous.

Sam, le conducteur engagé est une marque sociale de la Sécurité routière (Securite-routiere.gouv.fr).

Chaque programme est ensuite décliné opérationnellement pour chaque cible, autour d’objectifs de changement de comportement, et mis en œuvre selon le « modèle des 5 c » :

  • le comportement à adopter (par exemple, arrêter de fumer) ;

  • des aides et solutions proposées pour réduire les coûts et freins à l’adoption de ce comportement (applications, préservatifs gratuits ou à faible coût…) ;

  • une capacité d’accès aisée aux aides et comportements (rendez-vous rapide pour un dépistage, éthylotests disponibles dans les bars…) ;

  • une communication créative qui mobilise des canaux variés (médias, réseaux sociaux, etc.) ;

  • des collaborations avec des acteurs proches des publics bénéficiaires (associations, éducateurs, professionnels de santé) pour assurer la diffusion de l’intervention.

Enfin, toute campagne de marketing social s’inscrit dans une logique d’évaluation, afin de vérifier que les objectifs souhaités ont bien été atteints au regard des moyens mobilisés (évaluations de processus, d’impact et médicoéconomiques).

Marketing social et communication : une différence fondamentale

Ainsi, si la communication est nécessaire pour dérouler une campagne de marketing social (un des 5C), elle n’est pas suffisante. C’est la conclusion de nombreuses études ayant analysé l’efficacité des interventions élaborées selon les principes du marketing social et qui se déroulaient dans des contextes et milieux variés (lutte contre le tabagisme, l’alcoolisme ou les drogues illicites ; promotion de l’activité physique et de la nutrition à l’école, en entreprise, etc.) puis sur des cibles différentes (population défavorisée, adolescents, professionnels de santé, grand public, etc.).

Les chercheurs sont arrivés à la conclusion suivante : si les campagnes de communication peuvent agir sur les connaissances, les représentations, les normes, ou encore si elles informent sur l’existence d’un service, elles ne déclenchent pas, à elles seules, des changements de comportement si les autres composantes du marketing social n’y sont pas associées.

L’exemple emblématique du « Mois sans tabac »

L’exemple de la campagne annuelle « Mois sans tabac » lancée en 2016 par Santé publique France et adaptée de la campagne britannique Stoptober est illustratif de l’intérêt du marketing social. Cette intervention inédite en France en a intégré tous les ingrédients pour inviter les fumeurs à faire une tentative d’arrêt du tabac pendant 30 jours, en novembre, et optimiser ainsi leurs chances d’arrêter durablement.

Elle s’est basée sur les modèles théoriques de changement de comportements (théorie de la contagion), une connaissance des parties prenantes et de la cible visée, une prise en compte de la « concurrence » (l’industrie du tabac), une segmentation réfléchie (campagne ciblant les fumeurs quotidiens souhaitant arrêter de fumer, âgés de 18 à 64 ans et les plus vulnérables).

De plus, cette campagne s’appuie sur une proposition comportementale atteignable (arrêter de fumer pendant un « mois »), une marque chaleureuse et conviviale ainsi que des aides et services accessibles facilement et gratuitement ou à un prix très faible (site Internet, coaching personnalisé, numéro de téléphone, kit pour arrêter…).

L’accent est mis sur les bénéfices de l’arrêt. Puis, des collaborateurs et partenaires assurent la diffusion de la campagne et de ses services vers les lieux de vie des fumeurs (associations, pharmacies, entreprises, etc.). Enfin, une campagne de communication est diffusée dans les médias et sur les réseaux sociaux.

Cette combinaison s’est révélée bénéfique puisque les évaluations quasi continues de la campagne « Mois sans tabac » ont montré son efficacité pour inciter les Français à arrêter de fumer, bien plus que les précédentes campagnes qui se basaient essentiellement sur la communication.

« Mois sans tabac » a ainsi joué un rôle dans l’augmentation des tentatives d’arrêt du tabac (les éditions 2018 et 2019 auraient chacune généré environ 50 0000 tentatives), ainsi que sur l’arrêt du tabac à plus long terme. De plus, l’OCDE a estimé que si elle était maintenue sur la période 2023-2050, cette campagne permettrait d’économiser en moyenne 7 euros par an en dépenses de santé pour 1 euro investi.

Renoncer au marketing social : un retour en arrière pour la santé publique

Dix ans après sa création, la restructuration de Santé publique France annoncée par le gouvernement en janvier 2026 pourrait conduire à un abandon du marketing social au profit d’un « recentrage stratégique » sur la communication, qui serait désormais pilotée par le ministère de la santé et l’Assurance-maladie. Les pouvoirs publics justifient cette évolution par la volonté d’« offrir aux citoyens des messages plus clairs » et « une meilleure efficacité ».

Penser que le recentrage sur la communication et l’abandon du marketing social pourrait être aussi efficace et efficient n’est pas fondé, ni sur le plan scientifique, ni sur le plan empirique. Il faut alors se questionner les réels motifs qui poussent à cette décision : coupe budgétaire, volonté de reprise en main du contenu des messages au détriment des données probantes et des évaluations de campagnes, influence des lobbys ?

L’avenir nous le dira, mais cette évolution pourrait s’opérer au détriment de l’efficacité des politiques de prévention et, in fine, de la santé des Français.

The Conversation

Karine Gallopel-Morvan a reçu des financements de l’INCa, l’IRESP, JApreventNCDs, le Fonds de lutte contre les addictions, la Ligue contre le cancer, Ramsay fondation, l’ARS Bretagne

Ancien Directeur général de Santé publique France 2016-2019

Sylvain Gautier est vice-président de la Société Française de Santé Publique (SFSP) et membre du Comité national de lutte contre le tabagisme (CNCT). Il est président du Conseil national professionnel de santé publique (CNP-SP) et membre du Collège universitaire des enseignants de santé publique (CUESP).

ref. Contre le tabagisme, l’alcoolisme, l’insécurité routière… le marketing social en santé est plus efficace que la communication – https://theconversation.com/contre-le-tabagisme-lalcoolisme-linsecurite-routiere-le-marketing-social-en-sante-est-plus-efficace-que-la-communication-276408

What Hannah Spencer’s historic win means for the Green party’s future

Source: The Conversation – UK – By Louise Thompson, Senior Lecturer in Politics, University of Manchester

Thursday’s byelection in Gorton and Denton has been huge for the Green party of England and Wales, with Hannah Spencer pushing Reform’s Matt Goodwin into second place, and Labour into third. Having one extra MP in parliament may not seem like a big milestone, but this byelection win is record-breaking for the Greens. I believe it shows their potential to be a credible alternative to Labour.

The Greens have never won a byelection before. They polled less than 7% of the vote (coming in fourth place) in the Runcorn and Helsby byelection in May 2025. And, unlike Reform UK in that byelection, the Greens didn’t just edge this victory – they took nearly 41% of the vote. That’s a whopping 28-point increase on their performance in the same constituency at the 2024 general election.




Read more:
Victory in Gorton and Denton is historic for the Greens – and cataclysmic for Britain’s two-party politics


The victory has given party leader Zack Polanski the confidence that voters now see the Greens as a viable alternative to Labour, even in former Labour strongholds. He announced to supporters, “this is what replacing Labour looks like”.

Over the past few years the Greens have really professionalised their party. We saw the impact of this in the 2024 general election, when they quadrupled their number of MPs and finished second in 40 constituencies.

Under Polanski’s leadership, they’ve developed a more populist edge, focusing on issues such as the cost of living and moving away from being “just” a climate party. They’ve also had a more visible media presence and started to take their communication strategy more seriously.

Spencer’s win increases the size of the Green parliamentary group to five MPs. In the context of a 650-member House of Commons, this doesn’t seem like much.

The Greens certainly aren’t large enough to swing any votes, or cause the government many problems. And although they now have more MPs than ever before, they are still only the sixth-largest party group in the Commons. There are still over twice as many independent MPs as there are Greens.

The win will, however, give the Greens some breathing space. It’s a tough job being a small party in the Commons, and the existing group of four Green MPs have shared a heavy burden of responsibilities in the chamber since their arrival in 2024. As Spencer finds her feet, she will be able to take on some of these policy portfolio responsibilities.

Having a bigger parliamentary team doesn’t just alleviate some of the pressure to be in the chamber all the time. It also allows the party to be more strategic, and to insert Green voices into more conversations than before.

This could be through places on committees scrutinising legislation, trying to catch the speaker’s eye during high-profile government statements and question times, or holding backbench debates on more local issues. There is no place for passengers in any small party, so we can expect to see Spencer playing a very visible role for the rest of the parliament.

The battle ahead

When the next general election draws closer, the Greens may be grateful of this bigger team. They will want to capitalise on their success in Manchester and continue to professionalise their operations as a national party.

They are also likely to face more hostility at Westminster. Labour is now fighting a war on two fronts. The party’s embarrassing third-place result in Gorton and Denton – which Keir Starmer called “very disappointing” – will have hammered this home. We can expect to see more attacks on the Greens, including in the Commons chamber.

Until now, the prime minister has focused much more consistent attention on discrediting Reform. Now, he needs to worry much more about Polanski and the Greens, and will be directing some focus to winning back Labour voters who see the Greens as the stronger party of the left.

We had a glimpse of this in January, when North Herefordshire’s Ellie Chowns used her occasional opportunity to question the prime minister to ask about water pollution. Starmer turned it into a partisan attack on the unrelated topic of Polanski’s comments about Nato.

While the Reform UK leader, Nigel Farage, regularly berates Starmer in the Commons, the Greens rarely take such an overtly partisan approach. Reform MPs tend to participate more frequently in high-profile parliamentary occasions, where they can question the government. The Greens tend to have a more balanced, policy-focused approach, regularly popping up on committees to scrutinise legislation.

This is helped by Polanski’s position as a leader who sits outside the Commons (a member of the London Assembly). He can delegate the scrutiny of government policy to Chowns and her colleagues, while he takes broader comments about the government’s performance directly to the press.

This balance will be important as the Greens think about the upcoming local elections. Spencer told the press today that the party can now “win anywhere”, and Polanski predicted a “tidal wave” of Green MPs at the next election.

To do this, they need to maintain the momentum they’ve created this week. This means keeping a tight hold of the former Labour voters who chose them instead in Gorton and Denton.

It will be difficult for the party to carry out the same intensive campaign strategy on a more national level, but this sort of intensity is key to ensuring that the left vote goes to the Greens rather than to the other alternatives. Having more party members than ever before will help with this, but they will need to rely on their on-the-ground campaigners to feel secure.

The Conversation

Louise Thompson receives funding from the ESRC ES/R005915/2

ref. What Hannah Spencer’s historic win means for the Green party’s future – https://theconversation.com/what-hannah-spencers-historic-win-means-for-the-green-partys-future-277114

Bad Bunny says reggaeton is Puerto Rican, but it was born in Panama

Source: The Conversation – USA (2) – By Brendan Frizzell, PhD Student in Sociology, USC Dornsife College of Letters, Arts and Sciences

Puerto Rican reggaeton artist Bad Bunny performs the Super Bowl halftime show on Feb. 8, 2026, in Santa Clara, Calif. Bob Kupbens/Icon Sportswire via Getty Images

Bad Bunny likes to remind the world where he and his music come from.

In “EoO,” a song from his 2025 album “DeBÍ TiRAR MáS FOToS,” he raps, “‘Tás escuchando música de Puerto Rico” (“You’re listening to music from Puerto Rico”). Similarly, in the album’s second track, “VOY A LLeVARTE PA PR,” he announces that both he and reggaeton were born in Puerto Rico: “Aquí nací yo y el reggaetón, pa’ que sepa’.”

Puerto Rican artists like Bad Bunny certainly helped popularize the genre. But they didn’t create it.

In my own research of Latin America, I’ve explored how reggaeton comes from the small Central American nation of Panama, where the sound emerged from a swirl of sonic influences that included Spanish conquistadors, Caribbean immigrants and American colonizers.

English and Spanish collide

Understanding reggaeton requires understanding the intermingling of cultures and languages that Panama experienced over a relatively short period of time.

After Panama gained its independence from Spain in 1821, it became part of Gran Colombia, which, at its peak, included modern-day Colombia, Venezuela, Ecuador and Panama.

Throughout the 19th century, Panama experienced population growth and mass industrialization, and waves of Afro Caribbean immigrants arrived in northern Panama in search of economic opportunities. Since they came from former British colonies, many of them spoke English. Meanwhile, the many Afro Panamanians already living in the country, whose descendants had been trafficked as slaves, spoke Spanish.

These linguistic distinctions resulted in two primary groups of Black people in Panama: Spanish-speaking Afro Panamanians and English-speaking West Indians. They worked alongside one another on construction projects, such as the trans-Isthmus railroad, in the mid-19th century. But with their different languages, colonial histories and cultures, they didn’t always get along.

In 1903, Panama separated from Gran Colombia, becoming the independent nation we know today. The U.S. had supported Panama’s independence for strategic reasons: It wanted to build and control the Panama Canal to secure influence over maritime trade and military movement in the Western Hemisphere. While Gran Colombia had rebuffed earlier U.S. overtures, leaders of the newly independent Panama were more receptive to American interests.

Jim Crow is imported to the Canal Zone

Police brutality, exploitation and intra-racial and interracial tensions also served as scaffolding for reggaeton.

During the canal’s construction, the U.S. operated and controlled the Panama Canal Zone, a 553 square-mile (1,432 square-kilometer) parcel of land encompassing the canal. Up to 60,000 people lived there while the canal was being built, with residents segregated by race into “gold roll” and “silver roll” workers. Gold roll workers were usually white. Silver roll workers were Black, and they were tasked with the most dangerous jobs.

The Canal Zone’s white residents were far more likely to have access to health services and have proper sanitation; Afro Panamanian and immigrant workers from Barbados, the Antilles, Jamaica and other Caribbean countries were much more likely to be exposed to – and die from – malaria.

West Indians and Afro Panamanians also experienced police brutality. Black women, in particular, were harassed by white police officers, who often accused them of sex work.

While both West Indians and Afro Panamanians were subjected to segregation and police brutality, the Americans running the Canal Zone tended to treat the English-speaking West Indians better. Meanwhile, children born and raised in the Canal Zone were only taught English in schools, which Afro Panamanians resented.

These tensions led to the rise of “panameñismo,” a movement that sought to preserve and promote Spanish language and culture in Panama. This movement culminated in the passing of restrictive immigration laws targeted at West Indians and stripping second-generation West Indians of their citizenship.

Despite these anti-West Indian policies, many Jamaican, Barbadian and Antillean immigrants who had already built a life in Panama remained in the country even after the canal was completed in 1914.

Black-and-white photo of a huge metal gate with tiny workers either posing or working from the wooden scaffolding.
Laborers work from scaffolding during the construction of the gates of Gatun Locks at the Panama Canal, c. 1914.
Detroit Publishing Company/Library of Congress via Getty Images

Reggae with a Spanish twist

In the 1960s and 1970s, Jamaicans introduced three subgenres of reggaemento, ska and dancehall – to Panama.

The lyrics were in English and Jamaican Patois, an English-based creole language. But it didn’t take long for an offshoot of reggae, “reggae en español,” to emerge. By the end of the 1970s, reggae en español had become popular in Panama and had spread throughout Latin America. Similarly, the nascent genre of hip-hop was gaining steam in the U.S. and eventually made its way to Panama, where an American presence had remained since the completion of the canal. It wasn’t until 1979 that the Canal Zone was abolished, and Panama did not have ownership over the canal until 2000.

It was out of this diverse mix of musical and linguistic influences that reggaeton was born, a genre that features the looping drum pattern – called “dembow riddim” – of Jamaican dancehall, the tropical vibe of reggae and a mixture of rapping and singing. Like reggae and hip-hop, reggaeton lyrics often emphasize Black solidarity and speak out against racial oppression and police violence.

The Panamanian artist Renato is credited with releasing the first reggaeton song, titled, “El D.E.N.I.,” in 1985.

The D.E.N.I. – an acronym for the Departamento Nacional de Investigaciones, or National Department of Investigations – was a tool of repression for Panama’s military dictatorship under Omar Torrijos in the 1970s and later under Manuel Noriega in the 1980s. The secret police force became entangled in drug trafficking and political corruption.

In ‘El D.E.N.I.,’ Renato denounces police brutality and racism.

In the song, Renato assumes the role of a racist police officer, the kind he encountered after relocating from the Canal Zone to Rio Abajo, an impoverished neighborhood in Panama City:

Con mi cara albina, te puedo golpear …

(With my albino face, I can hit you …)

Te voy a enseñar

(I am going to teach you)

Que a la justicia no se puede burlar

(That you cannot make fun of the justice system)

After its release, the track became a protest anthem against Panama’s military government.

While Renato’s popularity was growing in Panama, early Panamanian reggaeton artists and producers like El General were collaborating with Jamaican and American artists in New York City, where the underground dancehall and “hip-hop en español” scene thrived.

Even though El General primarily produced music, one of his tracks, “No Mas Guerra,” channeled the fighting spirit of original reggaeton, calling for Latin American communities to come together to end violence and wars.

A sanitized version of reggaeton goes mainstream

Despite not being responsible for its creation, Puerto Rico is where the genre went mainstream – largely thanks to the popular Puerto Rican artist Daddy Yankee.

Daddy Yankee’s music spread, in part, thanks to American brands like Kellogg’s and Reebok, whose ads featuring his songs were broadcast to American audiences. Few of his tracks contained the social justice themes that characterized early reggaeton.

Meanwhile, Tego Calderon, a Black Puerto Rican reggaeton artist, struggled to find a buyer for his 2003 debut album, “El Abayarde,” after being told he was too ugly for a musical career – a remark rooted in the anti-Blackness that’s pervasive in Puerto Rico.

Calderon’s experience in the industry and as a Black Puerto Rican dictated how he viewed the genre and created his music. Like Calderon, Renato and other Black reggaeton artists have spoken out against racism in reggaeton.

Man with afro wearing sunglasses and a red baseball jersey gestures while rapping into a microphone.
Reggaeton artist Tego Calderon performs at the BMG Music Showcase at Billboard Live in Miami Beach in 2003.
Rodrigo Varela/WireImage via Getty Images

Bringing reggaeton back to its roots

Though he may have the genre’s history slightly wrong, Bad Bunny’s own tracks return to reggaeton’s social justice roots.

Performed during the Super Bowl halftime show by Ricky Martin, Bad Bunny’s “LO QUE LE PASÓ A HAWAii” describes the history of U.S. colonialism in Hawaii and Puerto Rico, pointing out how local communities have been forced out by gentrifiers:

Quieren quitarme el río y también la playa

(They want to take the river and the beach away from me)

Quieren al barrio mío y que tus hijos se vayan

(They want my neighborhood and for your kids to leave)

And while the early-2000s reggaeton popularized by Daddy Yankee, Tego Calderon and Don Omar contained elements of misogyny and homophobia, Bad Bunny’s tracks “Yo Perreo Sola” and “YO VISTO ASÍ” build on feminist reggaeton anthems like Ivy Queen’s “Yo Quiero Bailar.”

Reggaeton was born out of a call for freedom, equality and justice. So I find it fitting that Bad Bunny is creating music that speaks to all types of people from all over the world.

The Conversation

Brendan Frizzell does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Bad Bunny says reggaeton is Puerto Rican, but it was born in Panama – https://theconversation.com/bad-bunny-says-reggaeton-is-puerto-rican-but-it-was-born-in-panama-276347

Tiny recording backpacks reveal bats’ surprising hunting strategy

Source: The Conversation – USA – By Leonie Baier, Postdoctoral Fellow in Behavioral Biology, Naturalis Biodiversity Center

A fringe-lipped bat carries a sound-and-movement biologging tag. Leonie Baier, CC BY-SA

Deep into the Panamanian night, the forest hums with sound. Chirping insects form a steady backdrop, rain softly trickles from leaves. Somewhere above a stream, frogs call into the darkness.

But I am not there to see this scene.

It’s already passed. What I hold now is a small, mud-smeared biologger, no larger than a Lego brick. This tag recorded the sounds of the previous night.

Three people wearing headlamps seated on the ground tagging bats at night.
Deep in the jungle of Soberanía National Park, researchers Gregg Cohen, Leonie Baier and Sebastian Mortensen process fringe-lipped bats under red-light headlamps. The nonintrusive light minimizes disturbance as the team weighs, measures and assesses each bat before tagging it.
Imran Razik, Smithsonian Tropical Research Institute, CC BY-SA

The evening before, my team and I had set nets outside the roosts – hollow trees or human-made structures such as tunnels or bunkers – where fringe-lipped bats (Trachops cirrhosus) sleep during the day. Under the faint glow of red headlamps, we weighed each bat we caught on its way out of the roost, checked its age and sex, and carefully glued a tiny tag to the fur between its shoulder blades.

When we released a tagged bat into the darkness, it vanished into the trees, carrying our recorder into the night.

The researchers carefully release the tagged bats into the night. Credit: Eric de Framond

Within a few days, the tags either fell off naturally or I gently removed them from recaptured bats with a quick trim of fur. Each biologger captured five to six hours of continuous sound and movement data – every flight, every attack, every crunch of prey bones between sharp teeth.

For the first time, I could follow a predator through the forest from its own point of view. And what those recordings revealed surprised me: Our fringe-lipped bats don’t simply grab the first thing they detect. Instead, they stalk the forest’s creatures with a patience and precision I hadn’t expected.

Person seated on forest floor wrapped in a mosquito net
Once a bat is recaptured, no chances are taken that it might fly off with its precious load – the biologger holding all the data – still attached. Here, Leonie Baier works under a mosquito net to safely remove the tag before releasing the bat, tag-free.
Eric de Framond, Smithsonian Tropical Research Institute, CC BY-SA

Tiny tags for tiny hunters

I’m a behavioral ecologist, and fringe-lipped bats have been part of my scientific life for years, through my work with animal behavior researcher Rachel Page at the Smithsonian Tropical Research Institute in Panama. In our recent study published in the journal Current Biology, we paired decades of field knowledge with miniature biologging technology, allowing us to accompany the bats through the night.

When I plug a tag into my laptop, I follow that journey in sound and movement. Through my headphones, I hear a familiar note. A túngara frog (Engystomops pustulosus) calls; that distinctive “whiiiiine-chuck-chuck” I know so well.

A túngara frog calls, looking for a mate. Credit: Leonie Baier

On my screen, the line charting the bat’s motions stirs: a tremor of movement, then a sharp burst of wingbeats. At the same time, the audio trace fills with a rapid series of ultrasonic echolocation calls, the staccato sound of a hunter steering through darkness. In my ears, a rush of air surges past the tiny microphone, then there’s a splash, more wingbeats, and finally the faint, wet crunching of teeth. A few minutes later, it’s over.

The bat has eaten the frog. I smile; we’ve studied this bat for so many years, the data matches what we have observed in the laboratory. But now, for the first time, I can hear how the hunt unfolds in the wild.

Biologger recording of a bat catching a frog from flight.
Leonie Baier434 KB (download)

I scroll further in my recording.

A new sequence begins, but this time there are no frog calls. No sound to guide a strike. Just a sudden rush of air, a violent rustling, and then the unmistakable sounds of a fight thrash through my headphones: wings flapping, claws scraping, and the harsh cries of a prey animal fighting to survive.

Biologger recording of a bat attacking its protesting prey.
Leonie Baier297 KB (download)

Eventually – silence.

For a long moment, I hear only the sounds of the forest. Then again, the beat of wings. The bat is flying once more. It lands. And then comes that telltale sound again – slow, steady and deliberate. The bat is eating its catch.

Five minutes pass. Ten. Twenty. The chewing stops. The motion trace falls flat. As the night drifts on, nothing moves. The bat has fallen asleep.

Much later, the silence breaks. A quick shudder, a few brief pulses of echolocation: The bat is awake again. But it doesn’t fly off. It starts chewing again. And again. In the end, I count a total of 84 minutes of chewing, spread out across several bouts. Whatever this tiny bat caught, it was nothing like the quick frog meal I’d heard before.

Size of predator usually matches size of prey

In the animal kingdom, size usually dictates strategy.

Large lions, wolves and polar bears chase prey nearly their own size, at enormous costs: hours of stalking, bursts of sprinting and long fasts between meals. Their energy reserves let them weather failure after failure until finally a single successful kill restores the balance.

Small predators live by different rules. The tiny bodies of weasels, shrews and bats burn energy so fast that skipping even one meal can mean starvation. For bats, the demands of powered flight push those costs even higher. So they hunt small, abundant prey: quick, low-cost meals that keep the metabolic fire burning.

On average, the bats we tracked made around seven attacks per night and succeeded roughly half the time. Hearing that more-than-one-hour-long chewing episode recorded on the biologger left me astonished. Was this individual bat just an exceptionally slow eater? Or had it taken down something very large?

In the flight cage, a fringe-lipped bat (Trachops cirrhosus) feeds on a túngara frog. Under controlled conditions, researchers can observe its feeding behavior in detail: The bat holds its prey in its jaws, braced by one or both thumb claws, and methodically gnaws until only the gallbladder is left uneaten. Credit: Joseph See, Smithsonian Tropical Research Institute

To find out, I turned to a feeding experiment I had run in captivity, where I measured how long bats chewed prey of known weights. That calibration allowed me to translate chewing time in the wild into meal size. I discovered that most prey weighed around 2 grams, about 7% of a bat’s body mass. But some meals were far larger, reaching up to 30 grams – nearly the bat’s own weight.

How can a creature so small, with so little energy to spare, afford to hunt like a lion?

Listening to dinner

Our bats’ style of hunting is close to that of lions or polar bears, but the efficiency of their hunts sets the bats apart from any large predator. After leaving the roost at dusk, they spent just over five minutes flying in total before making their first attack. So rather than spending the whole night in search on the wing, they flew only about 11% of the time – less than half an hour over five hours of recording.

How could they find their meals so quickly? The answer lies in their extraordinary ears.

Fringe-lipped bats are masters of acoustic espionage. Instead of using echolocation alone to detect their prey, they eavesdrop on the sounds that frogs and other animals make. A túngara frog’s distinctive “tuuuuungara,” for example, carries through the forest and serves as a perfect beacon for a hungry bat.

Trachops splashing while catching a tungara frog from a pond
The fringe-lipped bat (Trachops cirrhosus) splashes while catching a túngara frog from a pond in the rainforest in Panama.
Grant Maslowski, CC BY-SA

Our recordings show that attacks were eight to 12 times more likely when frog calls were present. Strikes launched from flight clustered near loud choruses, while nearly all attacks from perches occurred in silence.

The bats have a dual ambush strategy. They launch strikes from the air when prey are advertising themselves. When the forest falls quiet, they hang almost motionless from branches to listen for subtler cues, sweeping the scene with their large ears before swooping down onto their prey.

By alternating between active flight and patient perch hunting, they minimize effort and maximize success.

Learning to thrive in a changing world

Fringe-lipped bats have solved the small-predator dilemma by hunting large prey – such as frogs, lizards, birds or rodents – with remarkably little effort.

But not every bat we tracked was equally efficient. Adults tackled a wider range of prey, while juveniles focused only on smaller, more manageable meals – likely smaller frogs, grasshoppers and dragonflies. This variation suggests that experience plays a major role.

Fringe-lipped bats are long-lived – some over 14 years – and have exceptional memories. They can learn new prey sounds by trial and error, or even by observing other bats. Over a lifetime, a bat refines its strategy, becoming more selective in its choice of prey. In this way, it seems that its hunting success is not just a product of anatomy or instinct – it’s also a story of cognitive evolution.

The bats’ success, however, depends on a thriving forest. As amphibians face global declines from disease, habitat loss and climate change, the bats’ longevity gives them some time to respond and learn, offering hope that these extraordinary predators can persist even as ecosystems change – if we work to keep their forests alive.

Extreme hunting efficiency in a carnivorous bat.

The Conversation

Leonie Baier has received funding from the European Union’s Horizon 2020 research and innovation
program (Marie Skłodowska-Curie Actions) and the Smithsonian Tropical Research Institute.

ref. Tiny recording backpacks reveal bats’ surprising hunting strategy – https://theconversation.com/tiny-recording-backpacks-reveal-bats-surprising-hunting-strategy-271996

Nanoparticles and artificial intelligence can help researchers detect pollutants in water, soil and blood

Source: The Conversation – USA (2) – By Andres B. Sanchez Alvarado, Ph.D. Candidate in Chemistry, Rice University

Nanoparticles on a glass slide amplify the sensitivity of a microscope to detect trace amounts of hazardous pollutants. Brandon Martin/Rice University

Across the U.S., hundreds of sites on land or in lakes and rivers are heavily contaminated with hazardous waste produced by human activity. Many of these places, designated as Superfund sites by the Environmental Protection Agency, can be found in Houston, Texas, the city where my colleagues and I live and work.

Hazardous contaminants present at these sites that can increase the risk of cancer – such as polycyclic aromatic hydrocarbons, or PAHs – are pervasive in soil and water. Detecting these contaminants is only the first step to cleaning them up and keeping the environment safe.

The EPA’s standard methods for analyzing water samples from a well, for example, involve expensive techniques that must be carried out in a separate location, taking weeks.

Our chemistry research group develops new methods that are more accessible and portable to detect toxic pollutants in soil, water and even blood.

My colleagues and I use machine learning methods to detect individual compounds in mixtures without separating them and to automatically identify those compounds by comparing them to a digital database. With machine learning we can streamline analysis of a contaminated site, detecting hazardous pollutants faster and on-site, for more efficient environmental monitoring.

Nanomaterials are extra sensitive

Imagine trying to look at the end of a strand of your hair head on. You would barely see the width of the tiny filament. Now try to imagine a material that is 1,000 times smaller than the width of that hair strand. You wouldn’t see anything at all. My research uses microscopic objects known as nanoparticles that are about that size.

These nanoparticles interact with light in unique ways – kind of like how a magnifying glass focuses sunlight. Any substances near the nanoparticles are exposed to this focused light. We take advantage of this property by shining a beam of infrared light on the nanoparticles, so the substances around them absorb the intense light and generate a signal. We can detect the signal with a spectrophotometer: an instrument that measures the amount of light of a specific frequency.

Any toxic pollutant near the nanoparticles will absorb more of that infrared light than it normally would, enhancing the signal that we can measure. This process occurs only when the pollutant is close to the nanoparticles’ surface. But even the smallest concentrations of these pollutants can be detected using the nanoparticles’ enhancement, if they’re nearby.

In our laboratory, I make the nanoparticles using solutions of metal salts. I then dissolve them in a liquid to make an ink, which I then paint onto glass microscope plates. After the ink dries, I am left with nanoparticles packed together on the surface of the glass, like beads on a diamond painting kit.

A gloved hand holding a tube containing reddish-green liquid.
Nanoparticle ‘ink’ used for sample preparation shows the special way these nanomaterials interact with light. From a certain angle the liquid looks red, and from another, green.
Brandon Martin/Rice University

Once the nanoparticle painting is ready, I add a drop of contaminated water on top of the tinted glass and let it dry again. During this process, the contaminant molecules stick to the nanoparticles. Once dry, I slide the glass inside a spectrophotometer and measure the light absorbed and emitted by the pollutants on the nanoparticles.

The specific frequencies of light that a compound absorbs and emits are like a signature. Each contaminant will have a different signature that we can use to identify them in the water.

A diagram showing light, indicated by a wavy arrow, entering a cluster of nanoparticles and being amplified by molecules on the particles' surface
A schematic representation of the nanoparticles on a glass slide, as they are irradiated by infrared light. The molecules stuck to the particles’ surface amplify the light they can absorb, making even trace amounts of a compound detectable.
Andres B. Sanchez Alvarado

Machine learning simplifies the analysis

Sometimes, the contaminated water contains a mix of many different compounds, which complicates the analysis. Each compound will absorb light, and they might absorb similar wavelengths. To prevent this interference, scientists usually need to use sophisticated techniques to physically separate out each compound. These techniques can be time-consuming, so our team wanted to figure out how to circumvent this step.

We partnered with computer scientists who have been designing tailored algorithms that use machine learning. These programs take the data from our measurements and find patterns so subtle that even the most skilled analyst would miss them.

The left photos shows a gloved hand holding a jar full of water, the right shows a gloved hand holding a small tube of clear liquid.
Researchers first sample water or soil from a site. Then they analyze the sample using the combination of spectroscopy and machine learning to identify any pollutants present.
Brandon Martin from Rice University

These methods can simplify the data and extract the most significant characteristics from each compound. These distinctive characteristics help the computer distinguish the individual compounds present in a mixture, bypassing any physical separation stage in the analysis. Computer scientists can make these algorithms so sophisticated that we don’t even need to train the machine before analyzing a sample.

We can use our nanoparticles to measure water or soil polluted with a toxic contaminant, feed the data into the algorithms, and the machine will find the most important features and match them to a reference database. This analysis takes only a few hours, making it at least twice as fast as standard methods.

However, our method is far from perfect. One of the biggest challenges we face is optimizing the nanoparticles’ composition for different classes of contaminants. It can take different nanoparticles to enhance the detection of different pollutants. We also have to tweak the algorithm to look more closely for different signatures in the data.

This method could screen a site for broad classes of contaminants that are similar in chemical structure. Subsequently, in the future a specific type of nanoparticle and a more refined model could be used to identify each specific pollutant molecule.

Streamlined analysis can get the job done

Analyzing contaminants in the environment helps detect the presence of hazardous pollutants, and doing so efficiently can prevent exposure to people. The techniques our group uses to detect contaminants and analyze the data have been used in the field with portable instrumentation by other researchers. These portable instruments are still cheaper than those required for standard techniques.

Currently, our team is exploring the use of these machine learning-enhanced methods in different environmental contexts. We’ve analyzed other types of samples, such as water and air from contaminated sites. We are working on expanding the scope of analysis to a wider range of hazardous pollutants. We also collaborate with toxicologists and environmental engineers in the Texas Medical Center, with the goal of transferring this technology as an alternative method for environmental and public health agencies.

To that end, we’ve filed a patent for our method that combines spectroscopy and machine learning to analyze complex samples. While our team is not currently pursuing commercialization of this technology, it is a possibility down the road.

Still, detection is not the end for environmental safety. After a hazardous pollutant has been identified, a site must be investigated to decide how to clean it up. Our motivation is to streamline the process of detecting and identifying contaminants. The faster we can detect a hazardous substance, the faster we can prevent future emissions and begin cleanups.

The Conversation

Andres B. Sanchez Alvarado participated in research into combining spectroscopy and ML to analyze complex samples, which has a patent pending.

ref. Nanoparticles and artificial intelligence can help researchers detect pollutants in water, soil and blood – https://theconversation.com/nanoparticles-and-artificial-intelligence-can-help-researchers-detect-pollutants-in-water-soil-and-blood-271149

Former Harvard president Summers’ soft landing after Epstein revelations is case study of economics’ trouble with misbehaving men

Source: The Conversation – USA (2) – By Yana van der Meulen Rodgers, Professor of Labor Studies, Rutgers University

Larry Summers, center, is surrounded by the media in 2005 amid calls for his resignation. Jodi Hilton/Getty Images

Economist Larry Summers will resign from his tenured job as a professor at Harvard University, the school announced on Feb. 25, 2026, following heightened scrutiny of his ties with the late convicted sex offender Jeffrey Epstein. Summers will leave at the end of the 2025-26 academic year, with a new title: president emeritus.

It’s a soft landing for his fall from grace.

In November 2025, Harvard launched an investigation of Summers, a former U.S. treasury secretary who previously served as Harvard’s president.

The probe looked into whether Summers and other members of Harvard’s faculty and administration had interactions with Epstein that violated its guidelines on accepting gifts and should be subject to disciplinary action. Summers’ resignation is connected with this ongoing investigation, a Harvard spokesperson told The Hill.

Despite repeated calls by students for Harvard to revoke Summers’ tenure, he held onto his teaching and academic appointments at Harvard until he chose to retire. Students and staff also called for his resignation in 2005 following his disparaging comments about women in science.

“Free of formal responsibility, as President Emeritus and a retired professor, I look forward in time to engaging in research, analysis, and commentary on a range of global economic issues,” Summers said in a statement released on Feb. 25.

Not surprised

As a female economist and a board member of the Committee on the Status of Women in the Economics Profession – a standing committee of the American Economic Association – I wasn’t surprised by the revelations of Summers’ apparent chumminess with Epstein, shocking as they may appear.

After all, it was Summers’ disparaging remarks about what he said was women’s relative inability to do math that led him to agree to relinquish the Harvard presidency in 2006.

And for years, researchers have documented the gender bias that pervades the field of economics.

The title of president emeritus is honorary. It brings with it symbolic recognition and the opportunity to maintain a formal connection to the university. Emeritus status is selective and requires approval at most universities. It’s usually bestowed on retiring professors.

In my view, by conferring this title on Summers, Harvard is signaling that powerful men can outlast gross misconduct with their honorifics intact.

Mugshot of Jeffrey Epstein, left, and headshot of economist Larry Summers.
Documents released in 2025 pointed to close ties between Jeffrey Epstein and Larry Summers.
New York State Sex Offender Registry via AP/Michel Euler

Summers’ ties to Epstein

Summers, until his entanglement in the Epstein scandal came to light, was among the nation’s most influential economists.

But his history of public controversy stretches back to at least 1991, when a memo he wrote while serving as the World Bank’s chief economist appeared to justify sending toxic waste to poorer countries.

Criticism of Summers surged after the House of Representatives released damning messages between Summers and Epstein as part of a dump of more than 20,000 public documents from Epstein’s estate in November 2025.

A series of emails and texts documented how Summers repeatedly sought Epstein’s advice while pursuing an intimate relationship with a woman he was mentoring – while the economist was married to someone else.

Summers was close enough to Epstein that in 2014, the sex offender named the economist as a backup executor for his estate.

The Department of Justice released a much larger tranche of documents in January 2026 in compliance with a law passed by Congress. So far, no major media outlet has reported on any new Summers materials discovered as a result.

Four women hold photos of Jeffrey Epstein aloft.
Protesters hold signs bearing photos of convicted sex criminal and Larry Summers confidante Jeffrey Epstein in front of a federal courthouse on July 8, 2019, in New York.
Stephanie Keith/Getty Images

Harvard’s slow response

The Summers-Epstein exchanges released in November ignited a new round of scrutiny and led to the unraveling of Summers’ prestigious career.

Summers went on leave from teaching at Harvard on Nov. 19 and stepped down from several high-profile boards.

But beyond launching the investigation, Harvard took no decisive action to discipline or sanction Summers. This calculated hesitation, which reflects the institution’s efforts to court funding, power and influence among top donors, appears to have put donor politics above basic accountability.

By contrast, the American Economic Association, the primary professional association for economists, did take swift and harsh action. In an unprecedented move, on Dec. 2, 2025, the AEA announced that it had placed a lifetime ban on Summers from all its conferences and other activities.

Having lots of company

To be sure, Harvard is not the only prestigious university dealing with the aftermath of the Epstein revelations.

The Epstein documents include evidence that administrators and professors at other prestigious colleges and universities like Duke, Yale, Bard, Princeton and Columbia also exchanged messages with Epstein.

As public funding for higher education has eroded, universities have increasingly turned to wealthy donors to underwrite major projects and supplement budgets by endowing professorships and research centers. Epstein appears to have taken advantage of this dependence on rich supporters by presenting himself as someone who could deliver both his own money and access to other affluent donors.

The Epstein files uncovered many email exchanges, meetings and discussions with the sex offender about research and funding opportunities, and they demonstrated how thoroughly the man had embedded himself in academic circles.

Disturbingly, Summers was hardly the only scholar to solicit Epstein’s help in pursuing women.

Among others, Duke University economist Dan Ariely asked him for the contact information of a “redhead” he had met, and Yale computer scientist David Gelernter told Epstein about a woman he called a “v small goodlooking blonde.”

Young women hold signs that say 'Larry Must Go!'
Harvard students and other protesters demand an end to Larry Summers’ Harvard presidency in 2005, after he made disparaging remarks about women in science.
Jodi Hilton/Getty Images

An economics problem

While Summers’ behavior and the reported dynamics between him and a woman he mentored may appear shocking, they are all too common in economics. For years, researchers have been documenting the gender bias that pervades the profession.

The data shows that abuse of power is common among male economists.

A 2019 survey by the AEA documented widespread sexual discrimination and harassment. Almost half of the women surveyed said that they had experienced sexual discrimination, and 43% reported having experienced offensive sexual behavior from another economist – almost always men.

Also, a 2021 study published by the National Bureau of Economic Research documented hostile environments in economics seminars, with female presenters experiencing more interruptions and encountering more patronizing behavior.

In 2024, according to the National Science Foundation, about 1 in 3 newly minted economics Ph.D.s in the U.S. were women, a considerably lower share than in other social sciences, business, the humanities and scientific disciplines. This ratio has changed very little since 1995.

After earning doctoral degrees in economics, women face a leaky pipeline in the tenure track, which represents the highest-paid, most secure and prestigious academic jobs. The higher the rank, the lower the representation of women.

The gender gap is wider in influential positions, such as economics department chairs and the editorial board members of economics journals. Women are also substantially underrepresented as authors in the top economics journals.

This bias not only hurts women who are economists; it can also hamper policymaking by limiting the range of perspectives that inform economic decisions.

Allowing a soft landing

Allowing Summers to commence a dignified retirement while continuing to hold honorifics risks signaling that there are ultimately few consequences at the very top in higher education.

I believe that if colleges and universities want to prove that they are serious about confronting abuses of power within their ranks, they must show that prestige does not entitle anyone, however accomplished, to a soft landing.

Portions of this article appeared in a related article published on Dec. 2, 2025.

The Conversation

Yana van der Meulen Rodgers is a board member of the Committee on the Status of Women in the Economics Association.

ref. Former Harvard president Summers’ soft landing after Epstein revelations is case study of economics’ trouble with misbehaving men – https://theconversation.com/former-harvard-president-summers-soft-landing-after-epstein-revelations-is-case-study-of-economics-trouble-with-misbehaving-men-277025

How the Seattle Seahawks’ sale will score a touchdown for charity 8 years after Paul Allen’s death

Source: The Conversation – USA (2) – By Reid Kress Weisbord, Distinguished Professor of Law and Judge Norma Shapiro Scholar, Rutgers University – Newark

Paul Allen, wearing a gray jacket, salutes the crowd during a celebration of the Seattle Seahawks’ Super Bowl victory in 2014. AP Photo/Ted S. Warren

When Microsoft co-founder Paul Allen died on Oct. 15, 2018, he left behind an estimated US$26 billion that he wanted to largely leave to charity.

Allen died at 65 of septic shock after a yearslong cancer battle. He’s back in the news because his estate is finally selling an asset that represents nearly a quarter of his fortune: the Seattle Seahawks football team, which he bought in 1997 for roughly $200 million.

The sale of the 2014 and 2026 Super Bowl champions could fetch more than $6.5 billion – a potentially record-breaking sum.

Allen never married and he had no children. His sister, businesswoman Jody Allen, is his estate’s trustee and executor. She’s now overseeing the Seahawks’ sale.

As law professors who study the transfer of property after death, we can explain why it often takes a long time for complex estates to settle following the death of ultrawealthy people.

Settling the estates of billionaires

When most people die, the distribution of any wealth they leave to their heirs or charitable causes can be relatively straightforward.

If all goes well, the process will take a few years at most. Homes, vehicles, bank accounts and retirement assets can usually be relatively quickly sold or transferred to members of the family or friends of the deceased.

When people hear that an estate is still being sorted out years after someone’s death, they often assume that big disputes have interfered with the settlement process.

Indeed, high-profile celebrity estates, including those that celebrity musicians such Prince and Aretha Franklin left behind, have been delayed by legal battles.

But delays are common even without conflicts, particularly when an estate is very large or complex.

Similar to sprawling empires

As you might imagine, billionaires’ estates are different. They tend to be more like sprawling business empires than what your beloved aunt left behind when she died. Multibillion-dollar estates usually take many years to unwind because they involve complex assets that are hard to assess and sell.

Some of Allen’s holdings, for example, were patents, which often complicate estate administration because intellectual property rights can be difficult to value for tax purposes.

Although the contents of Allen’s will were made public in 2018, the specifics of his estate plan remain confidential.

That’s because he used a private family office to manage his wealth – and he left all of his property owned at death to a private trust.

The specific terms of that trust aren’t publicly known, but his family foundation continues to support charitable causes tied to the arts, the environment and the engagement of young people in civic life.

An ecstatic woman holds a shiny trophy aloft while a man behind her pumps his fist into the air.
Jody Allen, the sister of the Seattle Seahawks’ late owner Paul Allen, lifts the Vince Lombardi Trophy as she celebrates with head coach Mike Macdonald after the Seattle Seahawks won their second Super Bowl in 2026.
Josh Edelson/AFP via Getty Images

Unwinding unusual assets

Sports teams, while clearly valuable, are infrequently sold. That makes them some of the hardest assets to get rid of after an owner’s death.

Jody Allen, as her brother’s executor and trustee, has a legal obligation to sell the team for as much money as possible, which requires careful timing and good business judgment when appraising the asset’s fair market value.

She managed the sale of another sports franchise Allen owned, the NBA’s Portland Trail Blazers, in 2025. The reportedly $4.25 billion deal brought the estate revenue that’s also slated for charity. The timing of the Seahawks’ pending sale – shortly after their latest Super Bowl win – is most likely intended to maximize the amount of money the estate will collect from the eventual buyer.

But some of the National Football League’s rules can complicate a team’s sale.

Other team owners and league officials, for example, must approve any change of ownership. Approval requires the support of more than three-quarters of the league’s other owners.

The NFL also requires all teams to submit a succession plan that explains what will happen if their owner dies to reduce the chance of any disruption that could arise from uncertainty of ownership.

Bulking up his endowment

Once the sale does go through, the money could end up in the foundation Paul Allen co-founded.

Allen donated more than $2 billion during his lifetime to support a wide range of causes primarily tied to medical research, education, the arts and the environment.

Like many ultrawealthy donors, he gave through his own foundation, now called Allen Family Philanthropies.

Six years after his death, it had a roughly $1.4 billion endowment and made more than $62 million in grants annually. Jody Allen, who co-founded Allen Family Philanthropies with her late brother, serves as its board chair and president.

The sale of the Trail Blazers, like the upcoming sale of the Seattle Seahawks, may make his foundation far bigger – leading to even more charitable gifts for years to come.

The Conversation

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

ref. How the Seattle Seahawks’ sale will score a touchdown for charity 8 years after Paul Allen’s death – https://theconversation.com/how-the-seattle-seahawks-sale-will-score-a-touchdown-for-charity-8-years-after-paul-allens-death-276577

Drug company ads are easy to blame for misleading patients and raising costs, but research shows they do help patients get needed treatment

Source: The Conversation – USA (3) – By Anna Chorniy, Assistant Professor of Pediatrics, Icahn School of Medicine at Mount Sinai; Institute for Humane Studies

The United States is one of just two countries where drugmakers can advertise directly to patients. BrianAJackson/iStock via Getty Images

It’s a familiar experience for many Americans: You’re watching your favorite show and suddenly you’re ambushed by an ad for a drug whose name sounds like a Wi-Fi password, before a relentlessly cheerful voice tells you to “Ask your doctor” and then blasts through a side-effect list that’s laughably long.

But that might soon change. After nearly 30 years of giving pharmaceutical companies free rein to advertise prescription drugs directly to consumers, U.S. officials are now seeking to curb this practice.

Soon after his appointment in 2025, Health and Human Services Secretary Robert F. Kennedy Jr. stated that he believes direct-to-consumer advertising of prescription drugs has contributed to overmedication and inflated health care costs, and that stronger oversight is long overdue. Meanwhile, politicians on both sides of the aisle have called for banning direct-to-consumer drug ads outright – though the Food and Drug Administration has so far focused on restricting “digital” loopholes and enforcing the laws about advertisement.

As a health economist who studies how health care policies shape decisions made by doctors and patients, I agree that the practice can steer patients toward heavily marketed brands instead of the most appropriate treatment.

But the research on how such advertising affects patients is more nuanced. Many rigorous studies show that these ads can benefit patients’ health by encouraging them to seek lifesaving treatment for conditions such as depression and heart disease and sparking conversations with their doctors. In my view, within the realities of the U.S. health care system, getting rid of direct-to-consumer drug advertising may do more harm than good.

The origins of US prescription drug advertising

Only two countries – the U.S. and New Zealand – allow drug companies to advertise prescription medications directly to the public. Elsewhere, this practice is banned out of concern that short ads cannot adequately explain medical risks and that prescribing decisions should remain under physicians’ control.

And for good reason: Research on risk statements in drug ads on television shows they are often dense, fast-paced and paired with distracting visuals, making them difficult for consumers to understand.

In the European Union, Canada and Japan, for example, manufacturers may run disease awareness campaigns but cannot name specific products.

The U.S. approach to regulating drug advertising evolved gradually over more than a century. Congress’ 1906 Pure Food and Drugs Act was the first major federal step in drug oversight. It required manufacturers to label their products accurately and to disclose the presence of key ingredients.

An old-fashioned illustration of a herald arriving on horseback to a pharmacy to promote Carter's Little Liver Pills
An early 20th-century advertisement for a cure-all medicine called Carter’s Little Liver Pills, made by a Pennsylvania company. In 1959 the Federal Trade Commission made the company take ‘liver’ out of the name.
Wellcome Collection, CC BY

For decades, pharmaceutical marketing focused on physicians by advertising in medical journals, visits by sales representatives and providing free samples. Drug companies still market heavily to physicians, but FDA policies and television changed the calculus.

By the 1960s and ’70s, the reach of mass media prompted companies to communicate complex medical information in brief commercial formats. The 1962 Kefauver–Harris Amendments, which required drugmakers to prove their products were both safe and effective to receive FDA approval, also gave the FDA explicit authority over prescription drug advertising. This allowed the agency to police exaggerated claims and require that promotional materials present a fair balance of benefits and risks, including clear disclosure of known side effects.

In the 1980s, several pharmaceutical companies experimented with marketing drugs directly to consumers in magazines and newspapers. The FDA paused these efforts in 1985 to study their effects but later allowed them to resume.

An opening for television ads

The pivotal change came in 1997, when the agency issued draft guidance that television ads needed to present only major risk information and could direct viewers elsewhere – via phone lines, print materials or websites – for the full details.

Reliable, up-to-date figures are hard to come by, but according to a widely cited estimate, the U.S. pharmaceutical industry now spends more than US$6 billion on direct-to-consumer advertising, roughly twice the amount spent in 2012.

In September 2025, the FDA announced it would revoke this change, restoring pre-1997 standards for fuller disclosure, and would more aggressively enforce currently existing rules for direct-to-consumer drug advertising. Despite growing interest from policymakers and Congress to ban them outright, a total ban likely would not survive a Supreme Court challenge.

How direct-to-consumer ads affect patients

Studies show direct-to-consumer drug advertising increases demand for medications and prompts more doctor visits and diagnoses. Policymakers and the FDA specifically have raised concerns that these ads mislead patients, encouraging them to overuse or inappropriately use drugs and choose more expensive treatments over less costly alternatives. This, in addition, could raise drug prices and result in wasteful spending. But research convincingly demonstrating this has been difficult to come by.

For example, a 2023 analysis showed that drug companies spend more on advertising drugs that have been rated as having relatively lower clinical benefit than on drugs that offer higher clinical benefit. This may imply, according to the authors, that drug companies are trying to steer patients to drugs that physicians would be less likely to prescribe.

Interestingly, though, rigorous research showed that direct-to-consumer advertising increases prescribing of both advertised and nonadvertised drugs – suggesting that overall this increase is serving patients.

U.S. health officials are moving to restrict direct-to-consumer drug advertising.

Demonstrated benefits

For all the criticism that these ads are deceptive, the evidence indicates they can generate substantial clinical benefits for patients.

Research finds that ads bring patients into care, while leaving prescribing decisions largely in physicians’ hands, resulting in more patients being diagnosed and treated. For example, according to a 2022 study on antidepressants, advertising encouraged more people to start treatment and expanded overall use, especially for underdiagnosed conditions.

During the 2008 election season, political ads displaced drug commercials, providing a natural experiment on the effects of direct-to-consumer drug advertising. One study probed that period to examine ads for cholesterol-lowering medications known as statins, which are some of the most widely prescribed medications in the U.S. It found that removing drug ads reduced sales.

That study also ran a simulation banning drug ads entirely to show that doing so would have reduced new statin users by about 600,000 in 2008. Combining their estimates with clinical evidence on the drug’s benefits, the researchers found that health gains from additional treatment outweighed the costs of advertising.

Another study took advantage of the rollout of Medicare Part D, which helps cover the cost of prescription drugs, as a natural experiment. After Part D expanded drug coverage, pharmaceutical advertising increased more in areas with larger Medicare populations. In those areas, researchers found that more patients began treatment and stuck with it.

Importantly, the number of prescriptions also rose for nonadvertised drugs, including lower-cost generics, suggesting that advertising expanded overall treatment rather than simply shifting patients to heavily promoted brands.

It’s easy to single out pharmaceutical ads aimed at patients, but they are only one piece of a complex health care system – one in which drug manufacturers, providers, insurers and pharmacies all have financial incentives that shape which medications patients can access.

For example, drug company marketing directly to physicians does skew prescribing, increasing drug costs, with little evidence that patients receive better or more appropriate treatment as a result. Yet in the absence of direct-to-consumer advertising, patients’ choices of medications would be more heavily controlled by that dynamic.

The challenge for policymakers will be to curb misleading promotion without cutting off patients’ access to reliable information or undermining their role in directing their own care – and that will likely require addressing broader issues in the health care system.

The Conversation

Anna Chorniy does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Drug company ads are easy to blame for misleading patients and raising costs, but research shows they do help patients get needed treatment – https://theconversation.com/drug-company-ads-are-easy-to-blame-for-misleading-patients-and-raising-costs-but-research-shows-they-do-help-patients-get-needed-treatment-265724