Au Sahel, la difficile équation entre la terre, l’eau et les populations

Source: The Conversation – France in French (3) – By Christian Bouquet, Chercheur au LAM (Sciences-Po Bordeaux), professeur émérite de géographie politique, Université Bordeaux Montaigne

Pour analyser les conflits dans le Sahel, il faut commencer par une arithmétique simple : il y a de plus en plus de monde, et de moins en moins d’eau sur des terres qui se réduisent.


Le 25 avril 2026, un conflit autour d’un puits a coûté la vie à 42 personnes dans la province de Wadi Fira, dans l’est du Tchad. Selon les autorités, il s’agissait d’une « dispute entre deux familles vivant sur ce territoire ». L’une faisait partie de la communauté des éleveurs transhumants, l’autre de celle des cultivateurs sédentaires. Dans toute la zone sahélienne, les puits sont souvent des lieux de tension, comme ici à Kouré, au Niger :

Puits dans la région de Kouré (Niger). À gauche, les femmes appartiennent à la communauté djerma, cultivateurs sédentaires. À droite, les hommes sont des Peuls, éleveurs transhumants.
Christian Bouquet, FAL

Sur cette image, on distingue au fond, dans la brume de l’harmattan, les cases du village des cultivateurs sédentaires djermas. Le troupeau de l’éleveur peul est en repli de transhumance ; il descend vers le sud au gré des pâturages, souvent confondus avec les champs de culture des paysans, surtout quand tout le monde converge vers le puits. Les conflits agro-pastoraux se multiplient dans cette région. Selon International Crisis Group, ils auraient fait plus d’un millier de morts et près de 2 000 blessés entre 2021 et 2024.

Si la géographie ne sert pas toujours à faire la guerre, elle reste toutefois très utile pour mieux comprendre ces conflits dans la mesure où c’est, par définition, une discipline « de terrain ». Rappel : le Sahel est une construction géographique. C’est « le rivage » du désert, et sa limite nord (telle qu’elle a été définie par Robert Capot-Rey en 1953) est celle du cram-cram (Cenchrus biflorus) et de l’isohyète 200 mm.

En effet, le cram-cram, petite graminée dont les glumes à crochet « interdisent l’entrée de la prairie à quiconque n’est pas chaussé ou monté », ne pousse pas si les précipitations sont inférieures à 200 mm. Naturellement, cette limite pluviométrique ne concerne pas que le cram-cram. Aucune culture vivrière, même la céréale la moins exigeante – comme le mil –, ne peut être pratiquée au-dessous de 250 mm de précipitations, de préférence bien réparties et bien dosées entre juin et septembre. Autant dire que les agriculteurs sédentaires connaissent la limite nord de leur implantation.

Le fardeau des sécheresses à répétition

Longtemps, les éleveurs nomades ou semi-nomades ont davantage joué avec cette contrainte, car une bonne pluie peut toujours faire naître un pâturage temporaire aux franges du désert. Mais ils devaient ensuite se replier vers le sud, et composer avec les paysans sédentaires afin d’éviter de faire piétiner par leurs troupeaux les champs cultivés. Parfois, des accords avaient été passés entre les uns et les autres autour de la fumure animale ou sur la récolte des fruits de quelques arbres, comme l’acacia gommier, dont les éleveurs pouvaient être considérés comme « propriétaires » car ils en avaient été les planteurs. C’était d’ailleurs le cas autrefois dans cette région orientale du Tchad, où a eu lieu le drame du 25 avril 2026.

Mais cette situation apparemment équilibrée qui prévalait avant et pendant la colonisation a été progressivement modifiée par deux facteurs de changement dont l’addition a sensiblement restreint l’espace occupé par les deux communautés.

Il y a d’abord eu la succession des sécheresses et, plus globalement, une péjoration très sensible des précipitations depuis 1970, ainsi qu’il apparaît sur ce diagramme :

Les conséquences de cet assèchement du climat débouchent aussi sur une autre représentation graphique, moins souvent évoquée mais plus concrète :


Geoconfluences/Christian Bouquet

En effet, selon Monique Mainguet, l’isohyète 200 mm a migré de 250 km vers le sud depuis 1900. Sans aller jusqu’à calculer avec précision la surface ainsi gagnée par le désert, en croisant ce chiffre avec la longueur méridienne du Sahel (de la Mauritanie à l’Érythrée), soit près de 6 500 km, on peut retenir qu’au moins 1 500 000 km² ont été perdus en quelques décennies par les éleveurs et les cultivateurs qui y vivaient encore au siècle dernier.

Une population qui a presque quadruplé en cinquante ans

Et dans cet espace ainsi rétréci, un autre paramètre a bougé : la population. Elle a presque quadruplé en cinquante ans : 135 millions en 2020 (contre moins de 40 millions dans les années 1970), et pourrait s’élever à 330 millions d’habitants en 2050.

L’équation est dès lors inquiétante : quand les éleveurs ne trouvent plus l’herbe et l’eau qui sont leurs repères millénaires, quand les cultivateurs attendent vainement la pluie qui rythmait leurs saisons, ils deviennent des migrants climatiques – bien qu’ils ne soient pas reconnus comme tels. Et rien n’a été prévu pour eux dans les zones méridionales de l’Afrique sahélienne. Lorsque cette migration s’ajoute aux mouvements de déplacés internes et de réfugiés chassés de chez eux par les conflits, on peut clairement ressentir un profond découragement.

Passer à l’étape suivante devient alors quasiment impossible. Celle-ci consisterait à développer une vision d’avenir pour les trente prochaines années à partir de notre constat : il y a trop de monde sur des terres disponibles restreintes alors que les ressources en eau (pluviale) diminuent.

Dessiner des projections dans le temps long

Dans une logique aménagiste, on peut imaginer des éleveurs qui renonceraient au nomadisme, et même au semi-nomadisme, pour se convertir à une forme de stabulation d’abord partielle puis totale, et imaginer des cultivateurs allant chercher l’eau là où elle se trouve encore (notamment dans les nappes souterraines), afin de produire davantage dans des conditions plus sécurisées, voire de cultiver du fourrage pour ceux avec lesquels ils étaient jusqu’alors en concurrence.

On ne rêve pas : cette formule a été testée dans les années 1970 lorsque les polders du lac Tchad étaient si prometteurs qu’on pouvait y réaliser trois récoltes par an, et sept à huit coupes de fourrage Pennisetum dans le même temps. Dans cette zone, où les pluies dépassaient rarement 250 mm, les paysans savaient utiliser l’eau du lac et des nappes, et l’expérience d’embouche qui avait été tentée à Bol avait permis d’engraisser les bovins de 90 kg en moyenne en six mois.

Depuis, dans cette région peut-être plus encore qu’ailleurs, le vent de l’histoire a tout emporté.

Ranch d’embouche dans les polders du lac Tchad, en 1974.
Christian Bouquet, FAL

C’est donc une arithmétique simple, par laquelle il faudrait sans doute toujours commencer quand on analyse les conflits sahéliens, du Darfour au Mali : plus de monde et moins d’eau sur des terres disponibles qui se réduisent. Certes, on ne doit pas occulter les autres facteurs de tensions (zones grises abandonnées par les États, mauvaise gouvernance, corruption, conflits intercommunautaires, groupes armés, djihadisme, trafics, etc.). Mais il ne faut pas non plus s’enfermer dans le déni de peur de stigmatiser telle ou telle communauté.

Il faut – surtout – essayer de dessiner des projections sur le temps long sans craindre les critiques « ethnographiques ». Personne ne peut imaginer un éleveur peul devenu sédentaire, chaussé de bottes en caoutchouc, armé d’une fourche et distribuant du foin à ses vaches. Et pourtant…

The Conversation

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

ref. Au Sahel, la difficile équation entre la terre, l’eau et les populations – https://theconversation.com/au-sahel-la-difficile-equation-entre-la-terre-leau-et-les-populations-281834

Urban gardens may contain lead — here’s what the research says about the hidden health risk

Source: The Conversation – Canada – By Melody Lynch, Adjunct Professor, Geography, Planning and Environment, Concordia University

You skip the pesticides, you remove weeds by hand, you choose heirloom seeds. Organic methods give you comfort in knowing that your vegetables are grown without excessive chemicals.

But what many careful gardeners don’t know is their gardens can carry a hazard that organic methods alone may not prevent: lead.

Lead has no safe level of exposure and it’s present in the soil of some Canadian urban gardens. Where does it come from? Leaded gasoline emissions from historical use, deteriorating lead-based paint that seeps into the soil around older buildings and industrial activities like mining.

Luckily there are many simple and affordable ways to reduce lead exposure and make our gardens safer.

Lead affects us all differently

Lead has no function in the human body and is harmful in any concentration.

Though estimates vary, adults absorb around three to 10 per cent of the lead they ingest, while those who are fasting or malnourished may absorb up to 60 to 80 per cent. The number is higher for children, who may absorb up to 50 per cent — or up to 100 per cent on an empty stomach.

For adults, lead accumulates primarily in our bones and teeth due to repeated or prolonged exposure before slowly being released into the rest of the body. For children, a greater proportion of lead is absorbed in soft tissues, causing serious health problems to begin earlier in life.

Over time, exposure can cause long-term irreversible health effects on the brain and nervous system, the kidneys and the cardiovascular system.

Each year, lead exposure is responsible for 1.5 million deaths and over 33 million years of healthy life lost to disability around the world.

Gasoline, paint and time

Lead can occur naturally, but most lead pollution results from human activity, like manufacturing, or from products like batteries.

The use of leaded gasoline has been eliminated around the globe, but historically deposited lead remains in the environment because it does not degrade over time.

Unfortunately, there are no regulations for leaded paint in many global contexts where it is still widely available and used. This contributes to global health inequities.

Furthermore, low-income and racialized communities may experience disproportionate exposure to lead, an example of environmental injustice.

Why the risk is worth taking

Despite the risk, gardens can be an important source of healthy foods, especially for economically marginalized communities. There are many other benefits too.

When we take care of a garden, research shows this reciprocally enhances individual and community well-being. Gardens can strengthen our immune function, help regulate endocrine responses, support emotional stability and improve psychosocial behaviours, especially among children. They can also foster empathy toward nature and other people.

For some Indigenous Peoples and other groups with long agricultural histories, gardens can contribute to cultural continuity through practices rooted in intergenerational knowledge and spirituality.

It’s important not to throw the baby out with the bathwater when it comes to managing risk and reward. Food safety concerns have been used to negatively stereotype marginalized populations who have limited alternatives, or to pre-empt public debate on land-use decisions that ultimately displace community gardens.

How to make your garden safer

Lead can get into your plants from the air or soil. Each plant will uptake lead differently depending on factors including plant type and soil characteristics. Leafy greens and root vegetables are generally more likely to absorb lead than other vegetables, for example.

Luckily, there are many simple ways to prevent lead from ending up in your homegrown foods.

  1. Position your garden away from busy roads, parking areas, railways, waterways and industrial areas.
  2. If you think lead may be present in your soil, you can send a sample to get tested.
  3. Be cautious with chemical fertilizers and pesticides. Attempt non-chemical solutions when possible; otherwise follow recommended dosages carefully.
  4. Use raised beds or pots with fresh soil if you are concerned about your soil being polluted.
  5. Use compost. While it will not remove heavy metals, high-quality compost can prevent lead from moving into your produce from the soil.
  6. Maintain soil pH with use of a pH meter available at the hardware store. Ensure your soil is not too acidic to prevent lead from moving from your soils into your plants.
  7. Look to soil texture. Avoid soils that are too sandy, as they encourage the movement of lead into your garden plants.
  8. Look to soil colour. Red and yellow soils often indicate the presence of iron oxides, which help prevent lead from moving into plants. Dark black soils often indicate high organic matter content, which helps with this protection too.
  9. Use mulch, such as wood chips or decaying leaves, to prevent lead from entering your soils from the air.
  10. Avoid burning waste in or near the garden, which may cause lead to enter your food. The open burning of waste is an urgent global health problem in places where waste collection infrastructure is insufficient, including some Indigenous communities in Canada.
  11. Prevent young children from putting soil in their mouths while in the garden, as they are at higher risk of developing health problems if they consume lead.
  12. Wash fruits and vegetables with clean water before eating to remove residues.



Read more:
We developed a biodegradable wash that can remove pesticides and keep fruit fresh longer


Perhaps the biggest action that we can take to make our gardens safer is to hold our governments accountable for clean communities. If you are worried about pollution, contact your local representative or join a cause to demand tighter regulations and improved planning policies.

For many families, a garden is not just a hobby. It’s where lunch or dinner comes from. And while progress has been made, lead exposure remains a hidden health risk for Canadians. It’s preventable if we take the right measures.

The Conversation

Melody Lynch received funding for this research from the Social Sciences and Humanities Research Council of Canada and Mitacs.

ref. Urban gardens may contain lead — here’s what the research says about the hidden health risk – https://theconversation.com/urban-gardens-may-contain-lead-heres-what-the-research-says-about-the-hidden-health-risk-280552

Les conflits d’intérêts sont la norme. Nos politiques continuent de les traiter comme des exceptions

Source: The Conversation – in French – By Bryn Williams-Jones, Professor of Bioethics and Director of the Department of Social and Preventive Medicine, École de santé publique, Université de Montréal

Les conflits d’intérêts sont à juste titre considérés comme problématiques : ils peuvent introduire des biais, compromettre l’objectivité et éroder la confiance. Certaines situations sont suffisamment graves pour être interdites. Mais la plupart sont moins évidentes.


À l’université, les conflits d’intérêts ne sont pas des anomalies. Ils font partie du fonctionnement ordinaire des activités académiques – recherche, encadrement, évaluation, attribution de ressources. Pourtant, ils continuent d’être traités comme des écarts à corriger plutôt que comme des tensions à organiser.

Qu’il s’agisse de l’évaluation des demandes de subvention, de la direction d’étudiants, de la publication scientifique ou de la gouvernance interne, les universitaires occupent simultanément des rôles multiples – chercheur, collègue, mentor, évaluateur – qui créent des zones de tension structurelles. Ces tensions apparaissent clairement dans certaines situations ordinaires.

Évaluer ses pairs : un terrain propice aux conflits d’intérêts

Prenons un cas banal : l’évaluation des demandes de subvention. Une professeure ou un professeur est invité à siéger sur un comité. Parmi les dossiers, plusieurs proviennent de personnes issues de son réseau professionnel – anciennes collaborations, collègues du même champ, parfois des concurrentes ou des concurrents directs.

Les règles sont claires : déclarer les liens pertinents et se retirer en cas de conflit. Mais, dans la pratique, les frontières sont floues. À partir de quand une proximité intellectuelle devient-elle un conflit ? Le fait d’avoir publié sur le même sujet ? D’avoir déjà échangé des commentaires sur un projet ?

La personne chargée de l’évaluation doit alors arbitrer entre plusieurs exigences : être impartiale, reconnaître la qualité scientifique, ne pas pénaliser indûment un projet concurrent, et préserver des relations professionnelles durables. À l’inverse, se retirer trop largement fragilise le fonctionnement même du système, en réduisant le nombre d’expertes et d’experts disponibles.

Ce type de situation n’est pas exceptionnel – il est constitutif du fonctionnement académique.




À lire aussi :
Les scandales SAAQclic et ArriveCan révèlent l’absence de contrôles internes


Des règles claires, des situations ambiguës

Dans la plupart des universités, ainsi que chez les organismes subventionnaires, la gestion des conflits d’intérêts repose sur un triptyque bien établi : identification, évaluation et gestion.

Par exemple, les règlements institutionnels exigent la déclaration des intérêts financiers ou relationnels, et prévoient des mécanismes de retrait des processus décisionnels lorsque ces intérêts sont jugés incompatibles avec l’impartialité attendue. Les politiques en vigueur dans les universités canadiennes et chez les organismes subventionnaires illustrent bien cette approche, centrée sur la transparence et la gestion ponctuelle des situations à risque.

Ce cadre est indispensable – mais il repose implicitement sur une conception des conflits comme des situations exceptionnelles, localisables, et, idéalement, évitables. Or, dans la pratique académique, une grande partie des conflits ne peut ni être éliminée, ni même clairement circonscrite.

Les chercheuses et les chercheurs collaborent avec l’industrie, conseillent des gouvernements, participent à des entreprises en démarrage et naviguent entre différents rôles, académiques et non académiques. Les professeures et les professeurs enseignent et encadrent des étudiantes et des étudiants qu’ils doivent à la fois évaluer et soutenir. Les administratrices et les administrateurs arbitrent entre les intérêts du corps professoral, des partenaires externes – publics et privés – et de l’institution.

Ces activités s’inscrivent dans des configurations où plusieurs intérêts se chevauchent, souvent de manière difficile à démêler. Dans ces contextes, les conflits d’intérêts ressemblent moins à des incidents isolés qu’à des conditions durables qui doivent être interprétées et gérées.

Un malentendu persistant

Malgré cela, les conflits d’intérêts restent mal compris dans le milieu universitaire. Ils sont encore largement perçus comme des fautes personnelles ou des accusations de manquement, plutôt que comme des situations nécessitant une analyse rigoureuse.

Ce malentendu a des effets concrets. Il peut susciter des réactions défensives, amplifier les tensions et, dans certains cas, mener à des allégations formelles d’inconduite – non pas en raison d’une intention malveillante, mais parce que des situations problématiques n’ont pas été reconnues comme telles et n’ont donc pas été prises en charge de manière appropriée.




À lire aussi :
Comment reconnaître – et gérer – un conflit d’intérêts


Au fil de plusieurs décennies de travail sur les conflits d’intérêts, notamment dans le cadre de comités disciplinaires appelés à examiner des allégations d’inconduite, j’ai constaté à quel point ces situations sont mal interprétées dès le départ. Ce qui commence comme une question de chevauchement d’intérêts est rapidement reformulé en question de responsabilité individuelle.

L’attention se déplace alors de la compréhension de la situation vers la défense des positions, ce qui rend toute résolution constructive plus difficile.


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Des événements aux situations

Une partie du problème tient à la manière dont nous concevons les conflits d’intérêts. Ils sont souvent envisagés comme des phénomènes statiques et facilement identifiables : soit un conflit existe, soit il n’existe pas.

En pratique, ils sont dynamiques. Ils émergent progressivement, évoluent dans le temps et sont façonnés par des contextes institutionnels, des rôles professionnels et des relations. Les identifier exige plus qu’une simple déclaration : cela requiert une interprétation.

Il devient alors plus juste de considérer les conflits d’intérêts non comme des événements ponctuels, mais comme des situations où différents intérêts entrent en tension et peuvent, selon les contextes, affecter le jugement et la confiance.

Analyser ces situations implique de poser une série de questions : quels intérêts sont en jeu ? Quelle est leur intensité ? Comment peuvent-ils influencer les décisions ? Qui est concerné ?

Les approches de gestion mettent de plus en plus l’accent sur ce type d’analyse contextuelle, ainsi que sur des outils permettant d’identifier et d’évaluer les situations à risque avant qu’elles ne dégénèrent.

Au-delà de la conformité

Si l’on comprend les conflits d’intérêts de cette manière, les limites de nombreuses politiques institutionnelles apparaissent plus clairement. La déclaration ne résout pas un conflit et l’existence d’une règle ne suffit pas à assurer une gestion adéquate des situations. Les politiques centrées sur la conformité risquent ainsi de passer à côté du travail plus exigeant du jugement.

Cela conduit à une question plus fondamentale : si les conflits d’intérêts sont normaux et parfois inévitables, que devraient réellement viser les politiques ?

Une réponse consiste à ne pas chercher à éliminer complètement les conflits, mais à créer les conditions permettant de les reconnaître, d’en discuter et de les gérer de manière responsable.

Cela suppose un déplacement du regard – du contrôle vers l’interprétation, de la responsabilité individuelle vers une responsabilité partagée, et de la conformité formelle vers une délibération continue.

Les approches institutionnelles gagneraient à évoluer dans ce sens, en considérant les conflits d’intérêts comme des situations nécessitant une analyse structurée plutôt qu’une simple déclaration, et en offrant des repères pour orienter les décisions en pratique.

Gérer l’inévitable

Cela n’élimine ni l’ambiguïté ni l’incertitude et ne garantit pas de bonnes décisions. La résolution parfaite est rare. En pratique, la réduction des risques constitue souvent l’objectif le plus réaliste.

Dans cette perspective, les conflits d’intérêts ne sont pas des anomalies à éviter, mais des caractéristiques d’un système complexe. Les gérer exige plus que des règles. Cela requiert une attention au contexte, une ouverture à la discussion et la capacité d’exercer un jugement dans des situations marquées par l’incertitude et par la diversité des intérêts et des priorités.

Dans une grande diversité de contextes académiques, ces situations prennent des formes variées : chevauchement des rôles, attentes concurrentes et nécessité de prendre des décisions sans pouvoir dissiper entièrement les tensions en jeu.

L’enjeu n’est pas de banaliser ces situations ni d’en minimiser les risques. Il s’agit plutôt de reconnaître que traiter les conflits d’intérêts comme des accusations à résoudre peut empêcher de les comprendre – et, par conséquent, de les gérer efficacement.

Pour être pertinentes, les politiques doivent refléter la manière dont ces situations émergent et soutenir le travail, souvent difficile, de leur gestion, plutôt que de supposer qu’elles peuvent toujours être évitées.

La Conversation Canada

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

ref. Les conflits d’intérêts sont la norme. Nos politiques continuent de les traiter comme des exceptions – https://theconversation.com/les-conflits-dinterets-sont-la-norme-nos-politiques-continuent-de-les-traiter-comme-des-exceptions-281692

After the COVID-19 pandemic, thousands more kindergarteners faced developmental challenges

Source: The Conversation – Canada – By Magdalena Janus, Professor, Department of Pediatrics, University of British Columbia

Children with special needs often experience a range of early developmental challenges that can affect their readiness for learning and their participation in school.

This population includes children with a wide range of neurodevelopmental conditions (like autism and ADHD) as well as physical or sensory conditions and impairments.

Overall, children with special needs are more likely to experience challenges in one or more areas of their development compared to other children their age. For example, about 80 per cent of kindergarten children with identified special needs do not yet have the skills needed to fully benefit from classroom learning, compared to 27 per cent of children without special needs.

In Canada, children with special health needs are more likely to live in lower-income neighbourhoods and to experience poorer developmental outcomes.

The COVID-19 pandemic, declared in March 2020, changed many aspects of everyday life for young children across Canada. Although all children were affected, those with special needs were often impacted more deeply.

Public health measures disrupted many of the resources and supports they and their families relied on, such as health-care visits, child care and early education programs. In some cases, these supports stopped altogether.

Many pandemic policies did not fully consider the needs of vulnerable groups, including children with special needs. As a result, these children and their families were more likely to experience negative impacts during this pandemic, highlighting gaps in support and services that may have affected their development.

Status of inequities

Our team at the Offord Centre for Child Studies at McMaster University produced a report that provided a comprehensive description of the status of inequities in early childhood development in Canada for children with special needs, both before and after the onset of the pandemic. The Public Health Agency of Canada commissioned the report.

We used population-level data and five different neighbourhood-level socioeconomic measures of inequities, including neighbourhood income after tax. The child development data came from the Early Development Instrument (EDI), a 103-item, teacher-completed questionnaire that assesses kindergarten children’s ability to meet age-appropriate developmental expectations across five developmental domains.

We examined EDI data collected before and after the onset of the pandemic to see whether there were differences in teachers’ reports of children’s development in kindergarten.

The EDI database consisted of data from both a pre- and post-pandemic
cohort of children (2017-20; 2020-23). This cohort comprises a total of 540,005 children with special needs from seven provinces and one territory: Prince Edward Island, Newfoundland and Labrador, Nova Scotia, Québec, Ontario, Manitoba, British Columbia and Northwest Territories.

We only selected provinces and territories with EDI data collection in both pre- and post-pandemic onset periods.

Defining special needs

“Special needs” encompasses a broad range of conditions affecting behaviour, communication and physical and intellectual development. A child was identified on the EDI as having special needs if they received a medical, physical or mental-health diagnosis by either a medical or a health practitioner or if they received special education support or services at school.

After the COVID-19 pandemic, a higher percentage of children with special needs didn’t meet age-appropriate developmental expectations in one or more developmental domains: physical health and well-being, social competence, emotional maturity, language and cognitive development, communication skills and general knowledge. These children are considered developmentally vulnerable.

While the overall rates of developmental vulnerability increased, the general pattern remained the same: children in lower-income neighbourhoods or areas with greater social and material disadvantage were more likely to face developmental difficulties.

Neighbourhood income

This pattern was especially strong when looking at neighbourhood income. As income decreased, the percentage of children experiencing developmental challenges increased. For other neighbourhood characteristics, such as how remote or rural an area was, the patterns were less clear.

For example, while children in very remote areas sometimes had higher rates of vulnerability, this was not consistent across all levels of remoteness, and in some cases, children in the most remote areas had lower vulnerability rates than those in more accessible regions.

Importantly, even though these patterns were similar before and after the pandemic, the overall number of children with special needs who were developmentally vulnerable increased after COVID-19.




Read more:
Children with special health needs are more likely to come from poorer neighbourhoods


On average, there was a 2.5 percentage-point increase in developmental vulnerability. While this may seem small, it represents thousands more children facing developmental challenges than just a few years earlier.

This increase is important because early developmental challenges in kindergarten are linked to greater risks for difficulties later in life, including academic struggles and social or emotional challenges.

These risks are especially pronounced for children with special needs, even though some difficulties may improve over time. Even modest increases in developmental vulnerability can have meaningful impacts — not only for children and families, but also for education and health-care systems that support them.

Girls with special needs: possibly more affected

In both the pre- and post-COVID-19 groups of children with special needs, there was a higher percentage of boys who were developmentally vulnerable compared to girls, with only a few exceptions.

For example, 83 per cent of boys with special health needs were considered developmentally vulnerable before the pandemic, rising to nearly 85 per cent after, compared to about 73 per cent and 77 per cent of girls, respectively.

Boys showed higher rates of vulnerability in most areas of development, except for language and cognitive skills. This pattern is consistent with previous research showing that boys often face more developmental and academic challenges in the early school years.




Read more:
New research shows quality early childhood education reduces need for later special ed


However, while boys had higher overall rates, the increase in developmental vulnerability after the pandemic was larger among girls. Rates rose by just over one percentage point for boys, but by more than four percentage points for girls. This suggests that girls with special needs may have been more affected by pandemic-related disruptions than boys.

Implications for essential services

Our findings have important implications for policy and practice. Understanding how developmental vulnerability is associated with neighbourhoods can help identify where support is most needed. There is a need to ensure children in more disadvantaged areas have access to health care, early intervention and specialized supports.

Schools play a key role by identifying special needs early, ideally starting in kindergarten, so that appropriate supports, such as individualized education plans, can be put in place as soon as possible.




Read more:
Many autistic students are denied a full education — here’s what we need for inclusive schools


The increase in both the number of kindergarten children with special needs and the proportion experiencing developmental challenges since the pandemic means that there will be more children requiring specialized assistance and accommodation in later grades.

Our findings highlight the growing pressures on children, families and health and education systems, and underscore the importance of responding with timely and targeted support.

The Conversation

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

ref. After the COVID-19 pandemic, thousands more kindergarteners faced developmental challenges – https://theconversation.com/after-the-covid-19-pandemic-thousands-more-kindergarteners-faced-developmental-challenges-280245

AI interviewers can’t connect with people the way human researchers can – they can produce only data, not meaning

Source: The Conversation – USA – By Kelley Cotter, Assistant Professor of Information Sciences and Technology, Penn State

AI models can pose questions and follow up on them, but the answers they solicit may be limited in scope and depth. Andriy Onufriyenko/Moment via Getty Images

Anthropic, the company behind the generative AI tool Claude, claimed in March 2026 that it used an AI interviewer to conduct “the largest and most multilingual qualitative study” ever done. The AI tool collected responses from nearly 81,000 people about their visions for AI, spanning 70 languages and 159 countries. Anthropic contends that tools like this can enable researchers to conduct “rich, open-ended interviews at a very large scale.”

Qualitative research is useful for understanding the lived experiences of people. “Qualitative” refers to both the type of data that researchers collect and their purpose for conducting a study. Qualitative data includes text, images, audio, video and anything that isn’t a number. This is why the term “qualitative” is often discussed in contrast to “quantitative” – that is, numerical – data.

Qualitative research enables researchers to deeply explore the tensions, ambiguities and paradoxes that characterize everyday life. It also helps unpack how social norms, cultural dynamics and subjective experiences shape people’s perspectives, beliefs and attitudes.

So, can an AI model without lived experience or a capacity to self-reflect connect with people enough to understand their worlds?

We are researchers who specialize in qualitative research on digital technologies. Collectively, we have decades of experience developing, conducting and publishing interview studies, and we teach qualitative research methods to undergraduate and graduate students.

While AI tools can support social science research, they also have significant limitations. Not taking these limitations into account risks undermining the unique value of research that relies on human connection.

What is qualitative research?

Broadly speaking, qualitative inquiry is about exploring the meaning people give to experiences.

Qualitative inquiry often involves face-to-face interviews with individuals and groups. What this looks like in practice varies based on a researcher’s academic discipline, their philosophical approach and their personal background.

While the goal is to produce explanations about the world, qualitative inquiry is designed to reveal the nuanced ways people make meaning while accounting for the different contexts that shape their experiences.

Qualitative and quantitative research approach questions from different angles.

For instance, our team has used qualitative inquiry to explore how parents, children and teachers navigate digital privacy issues. We’ve also used qualitative data to analyze how influencers, activists and everyday users make sense of and respond to social media algorithms.

Anthropic Interviewer can pose questions to participants and present follow-up questions based on a participant’s response. However, we argue that qualitative inquiry requires human capacities that an AI model lacks.

AI is programmed, human conversations are not

Unlike studies focused on quantitative data, qualitative inquiry relies on flexibility.

Research that collects quantitative data requires carefully managed study conditions. They often aim to test specific hypotheses and measure the relationship between variables. To establish the validity of their findings, researchers need to demonstrate that they controlled for confounding factors.

In contrast, qualitative studies are more open-ended. They typically consider how people understand or experience the world in context. Since the world is complex, messy and nuanced, interviewers may need to change their initial questions or add new ones to collect insightful data. In other words, researchers adapt the interview to follow the conversational flow.

To plan out the interactions Anthropic Interviewer would have with study participants, researchers need to specify core interview questions and give the program instructions on how to engage with participants. For its recent study on people’s visions for AI, some of the core questions Anthropic used include “What’s the last thing you used an AI chatbot for?” and “If you could wave a magic wand, what would AI do for you?” The company did not specify what prompts or hypotheses they fed the system to come up with follow-up questions for this study.

By relying on fixed instructions, Anthropic Interviewer does not have a conversation with a participant the way a human researcher does. Instead, it executes a series of tasks in response to prompt engineering. In a conversation, a human interviewer absorbs a variety of information from a participant – their words, tone, demeanor – and responds organically in a way that meets the moment. An AI interviewer, being a machine, can act only within the parameters set by the system designers. This means that even if it is trained on large datasets, as the Anthropic Interviewer is, it will not be able to account for the unique, often unspoken relational dynamics of new interviews.

Using an AI tool can generate qualitative data, but it is not the same as conducting qualitative inquiry.

AI does not have positionality

Most qualitative researchers see their identity, lived experiences and relationships to the people they study as central to their work. This positionality can be thought of as a series of lenses through which researchers approach their studies, such as their race, gender, beliefs, values, biases and life circumstances. These factors position researchers in relation to their area of focus – as insiders, outsiders or somewhere in between, depending on the context.

Anthropic Interviewer has no position in relation to the research it is meant to support, because it has no body, identity, life history or lived experiences. Even if prompted to imitate a particular perspective – such as from “one woman to another” – it will not “contain multitudes,” as poet Walt Whitman put it, like real people do.

As opposed to a real person with a personal perspective who can genuinely respond to a live conversation, AI models use probabilities to match the patterns of how a person may commonly act or speak. It may also be alienating for participants if an AI interviewer assumes a particular persona and changes how they respond. In some ways, Anthropic AI can present only what philosopher Donna Haraway called “a view from nowhere.”

Moreover, an absence of a personal lens does not imply neutrality. Because AI systems are trained on existing data, they can reflect the dominant stereotypes and worldviews of the time, including that of their developers, curators and the companies behind them.

Two people sitting in armchairs facing each other, the person in the foreground holding a stylus and touchpad
A researcher’s own background shapes how they relate to – and subsequently study – their participants.
Fiordaliso/Moment via Getty Images

The AI tool’s lack of positionality matters because this quality shapes every stage of research. This includes what questions researchers ask in interviews and how they ask them; how researchers filter information and interpret responses; and which topics they follow up on. Sharing things in common with participants – even just as a fellow human who can have firsthand experiences, thoughts and emotions – can be critical for data collection and analysis. It enables a deep, intuitive understanding of how participants perceive and interpret what they share.

A researcher’s personal lens also shapes how participants respond to them: what they choose to share and how comfortable they feel. For example, someone who grew up poor may feel more comfortable discussing debt and public assistance with someone who has a similar background than with someone who does not.

Without a personal lens, interviews can become flat and lack context. Questions may become mechanical, and the development of mutual understanding is limited. Participants may also respond differently when they sense the interviewer lacks a clear perspective.

AI cannot be reflexive

When researchers are able to reflect on their own assumptions, they can produce more thoughtful and responsible findings that avoid misrepresenting their participants. This reflexivity is another key human aspect of qualitative inquiry: researchers’ ongoing efforts to self-monitor the ways their personal background and choices over the course of a study may affect the work.

Good qualitative researchers do not try to eliminate their biases but instead try to account for them. They continually think about how their identity, experiences and perspectives shape their work and publicly share these reflections. While quantitative researchers see bias as a source of error, qualitative researchers see their viewpoints as assets in producing meaning.

Close-up of two people clasping hands
Empathy helps researchers hold themselves accountable to their participants.
dragana991/iStock via Getty Images Plus

For example, when our team interviews students for our studies, we consider how our dual roles as college professors and researchers may influence how we interpret our participants’ experiences, what they feel comfortable sharing and how they share it. Openly sharing such accounting provides important context for readers considering the findings, judging how far they can be applied elsewhere and building trust in the findings.

Anthropic Interviewer is not capable of reflexivity, because it has no frame of reference or capacity for self-reflection. As a machine, it cannot self-monitor its “choices” in interactions, consider how participants perceive it, or reflect on how these factors may shape what participants share or hold back. When readers cannot take stock of the ways researchers’ assumptions, values, beliefs and choices affected how they collected data, this can make the research seem less trustworthy.

Interviewing often helps researchers develop an empathetic connection to their study participants, which can help ensure their work is ethical and accountable. This deeply felt connection can guide researchers in respecting boundaries in interviews.

Empathy also helps researchers take care in honoring the thoughts, feelings and experiences of their participants by representing them as faithfully as possible.

Qualitative interviews still need humans

Anthropic Interviewer introduces new possibilities for qualitative research by enabling data collection at an unprecedented scale and speed. However, this does not mean that it does what human interviewers do in qualitative inquiry.

Research interviewing is not about extracting ready-made insights from research participants as efficiently as possible. It is about entering into other people’s realities and leveraging shared human experiences that make mutual understanding possible, both cognitively and emotionally.

As sociologist Douglas Ezzy once said, good interviews are about communion, not conquest.

The Conversation

Kelley Cotter has received funding from the National Science Foundation.

Priya C. Kumar has received funding from the Institute of Museum and Library Services (IMLS).

Ankolika De 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. AI interviewers can’t connect with people the way human researchers can – they can produce only data, not meaning – https://theconversation.com/ai-interviewers-cant-connect-with-people-the-way-human-researchers-can-they-can-produce-only-data-not-meaning-279437

How a shifting Nile landscape shaped the rise of the ancient empire of Kush in Sudan

Source: The Conversation – USA – By Geoff Emberling, Research Scientist in Archaeology, University of Michigan

Jebel Barkal mesa and the archaeological site at its base in the Nile Valley. Sami Elamin

When I first became co-director of an archaeological project at Jebel Barkal in northern Sudan in 2018, I was amazed by the site’s pyramids, temples and palaces. It had been an urban center in the ancient empire of Kush, which dominated the Nile Valley off and on for over 2,000 years, from 2000 B.C.E. to 350 C.E.

Panoramic view of a sandy landscape with a large mesa on the right and smaller pyramids in the distance, all against a blue sky.
Panorama of Jebel Barkal with royal pyramids at left.
Gregory Tucker

I was far from alone in admiring the ruins – European and American travelers have visited and archaeologists had documented the site for the past two centuries. More recently, Jebel Barkal was recognized as a UNESCO World Heritage site in 2003.

But researchers still know so little about the ancient city and its residents, particularly compared with other ancient cities of Egypt, Assyria, Greece and Rome. Where did nonroyal people live? What did they eat? We don’t even know how they got their water, since the site is about a mile away from where the Nile flows today. Could there have been a nearby channel of the Nile that has since filled in? What was this landscape like when Jebel Barkal was a major urban center? More broadly, how did changes in climate over the past 4,000 years affect the growth of the city?

Some of these questions can be studied by a field called geomorphology, the study of how the Earth’s surface changes, especially by erosion. To learn more about how the landscape around Jebel Barkal had changed over millennia, I invited two Dutch geomorphologists, Jan Peeters and Tim Winkels, who had previously worked on Nile landscapes in Egypt, to come to Sudan to design a study.

The Nile as a source of life

Map of northeastern Africa showing the path of the Nile River
The Nile runs through Sudan, past the ancient city of Jebel Barkal and then through Egypt before reaching the Mediterranean Sea.
Peeters et al PNAS 2026, CC BY

The Nile floods at the end of every summer, as rains from the Indian Ocean monsoon fall on the highlands of East Africa. The ancient historian Herodotus famously called Egypt “the gift of the Nile” because in Egypt. the rich silt the floods deposited every year made for fertile fields. Egyptians retained the floodwaters in ponds and basins to use later for irrigation.

Upstream in Sudan, however, the underlying geology and geomorphological setting is different. This stretch of the Nile is interrupted by bedrock outcrops that break the flow of the river by what are called cataracts: islands, rapids and even small waterfalls.

The Nile also cuts more deeply into the bedrock and is more confined to the riverbed in Sudan than in Egypt. The floodplains here are generally more limited. As a result, it’s harder to hold onto water to use for irrigation after the annual flood has passed.

Our team wanted to understand how the ancient city interacted with the Nile and how that relationship developed through time as climate and the local environment shifted. Our recent study, published in the Proceedings of the National Academy of Sciences, looked at how the Nile channel and floodplain and Jebel Barkal evolved over centuries.

Map of where the team took the sediment cores in the Nile River valley.
The team extracted soil samples in a line that stretched across both sides of the Nile River and in another line closer to Jebel Barkal.
Peeters et al PNAS 2026; background WorldView-3 satellite imagery © 2025 Maxar Technologies, CC BY

To learn about the ancient landscape, we collected 26 sediment cores, averaging 26 feet (8 meters) in depth and 3 inches (8 centimeters) in diameter. These cores are like time capsules that preserve the stacked layers of sediment from Nile floods that accumulated gradually over thousands of years. Connecting the dots, 17 of our cores formed a line across the Sudanese Nile valley. A second group of nine cores focused on the area where the ancient city developed.

The work was physically challenging, due both to the unrelenting Saharan sun and the depth of the sediments. Together with a team of five local men, we spent weeks drilling the cores using hand augurs and a gas-powered drill.

Four men focus on a piece of drilling equipment on the sandy land on the side of an unpaved road.
The team works to drill and extract a core that will stretch from today’s surface of the Earth down an average depth of 26 feet (8 meters).
Pawel Wolf

Hatim Awad Abdullah was this group’s energetic leader. He had his own interest in the history of Nile flooding, in part because his father and grandfather had told him that the river used to flood different areas than it has in more recent times. Our conversations with Hatim were part of a broader effort on our project to engage members of the local community, and they informed and enriched our understanding of the landscape. Other projects in Sudan have taken similar steps toward community engagement.

Extracting info from the sediment layers

Once our team had extracted the long sediment cores, we laid them out in sections so the geomorphologists could document what was in them at different levels. Sediments at the top of the cores are more recent, those lower down come from earlier in time.

Long, thin cylinders lie on the dusty ground, revealing dirt in their interiors.
The cores were removed in 3-foot (1-meter) segments that preserved the layers of sediment.
Pawel Wolf

Finer clays, silts and coarser sands would all have been deposited by different processes. Gentle flooding from the Nile could have carried some of these particles. More turbulent water draining from the desert via seasonal drainage channels called wadis might have brought others. By working from the deepest, oldest parts of the core samples to the ground surface, the geomorphologists could reconstruct a sequence of flooding and sediment deposition over thousands of years.

Our next step was to try to establish dates for when the sediments at different levels were deposited. One set of information came from fragments of ancient pottery found in some of the cores. Our team’s ceramic specialist, Saskia Büchner-Matthews, was able to analyze these small pieces and could often tell by their color, texture and shape when they had been made.

Another line of evidence relied on a technique called optically stimulated luminescence dating. By measuring the energy given off by minerals in the sample, like quartz grains, this amazing technique establishes when a sediment was last exposed to light. In order for optically stimulated luminescence dating to work, the samples need to be kept in the dark, so we had to be careful that our sediments were collected in black opaque tubes. Our team member Liz Chamberlain did this labor-intensive analysis in a specialized lab at Wageningen University in The Netherlands.

Our results show, first of all, that there had been an ancient Nile channel close to Jebel Barkal, but more like 10,000 years ago – millennia before the people of Kush built their city here. By the time the site was first occupied around 2000 B.C.E., that channel had long since filled in. So we still don’t know for sure how the people of Jebel Barkal got their water, but it’s clear that the Nile wasn’t running right next to the city.

Cross-section diagram of the Nile River channel at five different times.
This schematic reconstruction illustrates how the Nile channels and floodplain changed over time to the present condition in the top image.
Peeters et al PNAS 2026, CC BY

The data also shows that the floodplain began to build up from regular Nile flooding starting around 2000 B.C.E. This process continued until the early 20th century, when upstream dam construction altered the Nile’s natural flood regime. That gentle accumulation of fertile soil in the floodplain, which the people of Jebel Barkal used as agricultural fields, encompasses nearly the entire ancient history of the city.

The cores our team drilled show that the city grew during a time of abundant rains and productive, predictable Nile flooding that provided fertile soil for agriculture. It doesn’t look like local climate change is the reason Jebel Barkal eventually went into decline.

Our scientific results lend new weight to an inscription of the ancient Kushite king Taharqo, who ruled over both Nubia and Egypt from about 690-664 BCE. It records a gentle and particularly abundant flood in the sixth year of his reign.

“When the time for the rising of the Inundation came, it continued rising greatly each day and it passed many days rising at the rate of one cubit every day.

“It penetrated the hills of South-land, it overtopped the mounds of North-land, and the land was (again) Primeval Waters, an inert (expanse), without land being distinguishable from river. …

“Every man of Nubia was inundated with an abundance of everything, Egypt was in beautiful festival, and they thanked the god Amun for His Majesty.”

This research has been particularly satisfying for me because it helps build a richer picture of life in ancient Sudan, comparable in depth and detail to what we know about other ancient civilizations.

The Conversation

Geoff Emberling has received funding from the U.S. Department of State (through its Ambassadors Fund for Cultural Preservation), the National Endowment for the Humanities, National Geographic, and private donors including Kitty Picken, Steve Klinsky, and Roger and Ann Cogswell. In addition to his position at the University of Michigan, he is a board member of the International Society for Nubian Studies and Secretary of the American Sudanese Archaeological Research Center.

ref. How a shifting Nile landscape shaped the rise of the ancient empire of Kush in Sudan – https://theconversation.com/how-a-shifting-nile-landscape-shaped-the-rise-of-the-ancient-empire-of-kush-in-sudan-281841

Self-censorship, more stress, tougher recruiting – we asked US researchers how the Trump administration’s science policies have affected them

Source: The Conversation – USA – By Eric Welch, Professor and Director, Center for Science, Technology & Environmental Policy Studies, Arizona State University

93% of surveyed researchers have negative opinions of federal science policies since January 2025. Cavan Images via Getty Images

The American academic research engine has long been the envy of the world. Generally well-funded, labs in the United States have been able to attract the best minds who generate breakthroughs and train the next generation workforce that powers the U.S. economy. But since the start of the second Trump administration in January 2025, new federal policies have destabilized the American scientific enterprise.

The disruption generated by the Trump administration’s funding, DEI and visa policies has been well reported by the media. On an individual level, though, what do academic researchers think of all these changes and how have they been directly affected?

We are researchers affiliated with Arizona State University’s scientist opinion panel survey, known as SciOPS, a 5-year research program designed to monitor, understand and improve how scientists communicate with the public. We wanted to know more about the reality inside today’s universities as researchers grapple with Trump administration policies.

Along with our colleagues, we fielded a survey of randomly sampled members of the academic science community participating in the SciOPS panel. We obtained responses from 280 scientists from several fields, including biology, chemistry, civil and environmental engineering, computer and information science engineering, geography and public health from 131 universities.

Our results show dramatic, mostly negative, effects of federal policy changes on researchers, the research system and American competitiveness.

How research in US universities has changed

Any research enterprise thrives because of its ability to fund cutting-edge science and thus attract highly motivated, well-trained people. Since the second Trump administration took office in January 2025, just over half of the scientists in our survey report that their overall funding has declined.

Declines in federal funding have had knock-on effects. Around one-quarter of scientists reported that state and local and university internal funding have also declined. Another 9% reported that internal funding has increased, presumably as universities have provided emergency funds to researchers to support critical studies.

According to the scientists who responded to our survey, Trump administration policies have also affected the scientific workforce pipeline, hampering their ability to recruit internationally and domestically.

We hypothesize that these hiring issues can be related to visa and immigration policies, which make it difficult for international graduate students and postdocs to work in the U.S. or attend international conferences. Just over half of scientists in our survey reported that international students or postdocs have expressed concerns to them about deportation.

Concerns about longer-term career impacts are also to blame for trouble recruiting the next generation of researchers. Over 80% of surveyed scientists reported that graduate students or postdocs on their research team have increased concerns about future job prospects.

These impacts have taken a toll on scientists’ professional work environment and overall outlook. Over two-thirds reported more work-related stress and almost half reported increased workloads since January 2025. About half reported decreased work motivation.

How are scientists and engineers reacting?

We found scientists’ responses to be a mixture of resilience, acquiescence and considering an exit.

While many scientists said they were less motivated at work, most reported no change in their efforts to obtain federal research funding. Small proportions did report successfully increasing their efforts to obtain funding from non-federal sources.

Our survey also asked scientists whether they had taken any self-censoring actions since January 2025 due to concern over potential negative consequences for their work or career. Over half reported having reviewed or adjusted key words in research proposals, and almost half said they’d reframed research topics. Forty-three percent had also cautioned students or collaborators to be careful what they say publicly and more than a third had abandoned plans on one or more research topics.

Although scientists are adopting strategies to cope with the new challenges, nearly two-thirds of the scientists in our sample appear to be considering one or more other career options.

Scientists look to the long term

Scientists and engineers in our sample have strong opinions about the impacts of current U.S. science policy. A large majority (87%) believe the administration’s actions have influenced research priorities more than previous administrations. Most scientists in our survey had a negative opinion of the Trump administration’s overall changes to science policy.

Scientists in our sample believed that administration policies have had a negative effect on the future scientific workforce and the ability of scientists and engineers in the U.S. to produce breakthroughs and discoveries and contribute to national welfare.

Large majorities believe these policies have harmed public perceptions of the integrity of U.S. scientists (85%) and hurt public trust in science (84%).

Academic scientists’ reactions to the Trump administration’s changes to science policy are perhaps not surprising given the perceived level of threat these actions represent to the research community. What is less certain is whether the dramatic changes we are currently witnessing – cuts to grant funding, politicization of research, downsizing of federal agencies, restrictive immigration policies, attacks on the autonomy of higher education and more – are temporary or if they represent the initial phase of a transition to a new research environment with less federal support for American science.

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. Self-censorship, more stress, tougher recruiting – we asked US researchers how the Trump administration’s science policies have affected them – https://theconversation.com/self-censorship-more-stress-tougher-recruiting-we-asked-us-researchers-how-the-trump-administrations-science-policies-have-affected-them-280968

Formula 1 racing shows the hard part of reaching net-zero carbon emissions isn’t the engineering

Source: The Conversation – USA (2) – By Caitlin Grady, Associate Professor of Environmental Management and Systems Engineering, George Washington University

Formula 1 drivers maneuver for position during the 2026 Miami Formula One Grand Prix in Florida. Chandan Khanna / AFP via Getty Images

Formula 1 auto racing is one of the most energy-intensive and logistically complex sports on the planet. The events involve cars, of course, but also long-haul freight, international travel, temporary event infrastructure, and a global calendar that keeps people and equipment moving almost constantly.

Motorsports companies are not necessarily going to lead the transition to cleaner energy sources as the world seeks to limit the climate changes resulting from burning fossil fuels. But Formula 1 is a global operation with a large audience and a looming deadline for eliminating greenhouse gas emissions. It also has the same kinds of operational realities many industries face when trying to reduce their emissions: transportation, freight, energy use and the temptation to count the hardest remaining emissions as someone else’s problem.

F1 has pledged to reach net-zero carbon emissions by 2030 across its full operations. That means it will emit as little carbon dioxide and other greenhouse gases as possible, using methods that include shifting to the use of alternative fuels in race cars. The organization says it will balance any remaining emissions by capturing carbon back from the atmosphere or purchasing credits from organizations that capture carbon themselves. The organization publishes sustainability data updates to demonstrate its progress.

We used that data in an interactive computer model that lets anyone who wants to explore what it will take for Formula 1 to fulfill that promise in reality. Users can change various assumptions about fuel use, increase renewable electricity use and even change the racing calendar.

Our analysis finds that F1 racing could achieve substantial cuts in emissions – but getting all the way to net zero will still require carbon offsets. That leaves F1 with choices, gains, limits and then a final question about what counts as “zero.”

An interactive dashboard shows statistics and sliders to let users change settings.
An interactive dashboard uses real Formula 1 data to allow regular users to adjust various settings in an effort to achieve net-zero emissions, as the organization itself has pledged to do.
Screenshot of https://formula-one-netzero.fewslab.org/

From the track to the road

Formula 1 racing has long provided opportunities to test technologies that later appear in everyday transportation. Hybrid systems that use gasoline and electric batteries to power the engine, regenerative braking that recovers energy when a car slows down, and energy recovery from exhaust heat all advanced through F1 before becoming common in everyday cars.

Starting in 2026, Formula 1 cars are set to run on 100% advanced sustainable fuel made from renewable or waste-derived feedstocks like municipal waste or forestry waste. The international governing body of auto racing, the Federation Internationale de l’Automobile, and F1 leaders have explicitly described that fuel mix as a drop-in technology that could directly replace fossil fuel gasoline, with potential use in everyday vehicles.

Significant room for improvement

Our analysis suggests the sport can make significant emissions cuts through concrete operational changes. Cars can use cleaner fuels; shipping and logistics can choose lower-emission options; and more buildings can use renewable energy.

Our model shows that one of the most effective options is to group races more tightly by geography. If all the races scheduled for Europe, for instance, took place in successive weeks, followed by several weeks of racing in Asia, people and freight would travel less over the course of a season than they do now, shifting back and forth across continents.

But the race calendar is not dictated solely by logistics. Commercial deals, weather, tourism efforts, host-country priorities and broadcaster demands all help determine which races happen in which cities on what dates.

Under realistic assumptions, our analysis is that F1 appears capable of cutting its direct emissions by at least 50% from its 2018 baseline.

But in our scenarios, even significant operational improvements won’t get F1 all the way to net zero by 2030. Under the scenario that includes the most aggressive operational cuts, about a quarter of F1’s yearly emissions still remain to be addressed.

Equipment containers sit alongside a road beneath viewing stands.
The amount of freight involved in Formula 1 racing is significant, which means spending a lot of energy to ship it around the world.
Vince Caligiuri/Getty Images

Compensating for unavoidable emissions

To achieve net-zero emissions, Formula 1 will need to purchase carbon offsets to cover the remaining gap.

Buying carbon offsets, also called carbon credits, means spending money to make up for emissions a company can’t eliminate itself. For instance, a company could pay an organization to plant hundreds or thousands of trees, which would remove carbon dioxide from the atmosphere and store it in wood for many years.

The markets in which carbon offsets are bought and sold have faced years of scrutiny over whether credited benefits are real, whether the activities like tree-planting would have happened anyway, and whether they remove carbon from the atmosphere for a suitably long time.

Those questions matter for Formula 1 because the final step from deep emissions cuts to “net zero” depends not just on whether credits exist, but on what kind they are and whether they should count.

People in an open area of soil plant trees.
Members of a community group funded by carbon offset payments plant mangrove trees on the shore of Gazi Bay, in Kenya in June 2022.
AP Photo/Brian Inganga

A corporate challenge

Other companies are also struggling with these questions about carbon offsets in their climate plans. For instance, Microsoft, one of the world’s largest buyers of carbon removal credits, announced in April 2026 that it was pausing some new carbon-removal credit purchases.

For Formula 1, announcing the target was the easy part. The harder part is deciding what to do when technology and operational improvements get most of the way there, but not all the way. At that point, climate strategy becomes less about innovation alone and more about governance, credibility and what people are willing to count as credit.

Americans will be watching: The Netflix documentary series, “Drive to Survive,” which debuted in 2019 and is now in its eighth season, has significantly boosted Formula 1’s audience in the U.S. The organization’s sustainability efforts are part of a public story about whether a global entertainment business can align a high-performance identity with changing expectations about climate responsibility.

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. Formula 1 racing shows the hard part of reaching net-zero carbon emissions isn’t the engineering – https://theconversation.com/formula-1-racing-shows-the-hard-part-of-reaching-net-zero-carbon-emissions-isnt-the-engineering-281495

Texas Tech’s new limits on how faculty teach gender identity and sexual orientation challenge more than free speech

Source: The Conversation – USA (2) – By Henry F. Fradella, Professor of Criminology and Criminal Justice, Arizona State University

Banning students from writing theses and dissertations on sexual orientation and gender identity could be seen as curtailing students’ freedom of speech rights. Malte Mueller/fStop/Getty Images

Texas Tech University, a public university in Lubbock, announced in April 2026 that its five schools would phase out all academic credentials centered on sexual orientation or gender identity. The new policy, detailed in a six-page memo on April 9, also requires instructors to use “alternate materials” when courses address these topics.

Texas Tech, led by former Texas Republican state legislator Brandon Creighton, is not the first university to try to restrict instruction on gender, sexual orientation and other topics in recent years.

In 2023, for example, Florida passed legislation that banned students at public universities from majoring in critical race theory, gender studies, queer theory and intersectionality.

Texas Tech, however, goes further with this new memo. It also bars graduate students from writing “degree-culminating” theses or dissertations on sexual orientation or gender identity, something no other major public university system appears to have done.

As a scholar who studies the intersection of law, science and public policy, I doubt the policy would survive a possible constitutional challenge in court, given First Amendment freedom of speech protections. Even if courts ultimately strike the policy down, though, it may still leave a lasting mark, by signaling that some universities are willing to prioritize politics over independent academic inquiry.

A series of brown buildings are seen grouped closely together from above.
Texas Tech University’s main campus is in Lubbock, Texas.
David Kozlowski/Moment Mobile via Getty Images

Texas Tech’s policy shift

Texas Tech’s policy, which will begin taking effect in June 2026, requires faculty to teach in compliance with a 2025 Texas law that declares there are “only two human sexes.”

The law echoes the language of an executive order the Trump administration issued in January 2025 that said “It is the policy of the United States to recognize two sexes, male and female.”

Despite that air of certainty, there is substantial scientific literature that shows people’s biological variation does not fit a strict binary model.

Texas Tech faculty will soon be largely prohibited from teaching about gender fluidity or gender as a spectrum. There are narrow exceptions to this rule, such as discussions about intersex traits, so long as instructors do not “advocate for or validate sociological frameworks.”

Although current faculty may continue researching “topics of their choosing,” new faculty will be hired “in alignment” with the memo.

Students, meanwhile, can continue to conduct “general independent student research,” and write standard term papers, for example, on one of these subjects. But students cannot write graduate theses or dissertations on sexual orientation and gender identity.

By legal standards, these new policies are not neutral, curricular decisions. This is because the state of Texas favors one viewpoint – that there are only two biological sexes – that this public university system now reflects.

For nearly 60 years, the U.S. Supreme Court has repeatedly rejected the idea of viewpoint discrimination at universities. This discrimination occurs when the government or another authority allows speech favoring one opinion, while restricting speech expressing an opposing opinion.

The Fifth Circuit Court of Appeals, which oversees the region where Texas Tech is located, has also long recognized that “classroom discussion is protected activity.”

In a statement to the Associated Press in April, Creighton said that the school is “focused on ensuring our academic programs are rigorous, relevant, and produce degrees of value.”

He added that this focus “is matched by our unwavering support for the First Amendment and the open exchange of ideas that define a public university. Texas Tech will continue to be a national leader on both fronts.”

Part of a broader story

The Texas Tech policy is the latest example of a broader political effort to reshape what public universities may teach and research.

Several other public universities have also recently limited programs or coursework involving gender and identity studies.

In 2022, Florida’s “Stop WOKE” Act, restricted instruction perceived as endorsing certain race-related concepts in classrooms and workplace training sessions. Some faculty members left Florida public universities, citing concerns about censorship and political interference in higher education.

In 2022, federal judge Mark Walker called that Florida law “positively dystopian” and barred its enforcement, holding that the state cannot grant academic freedom only to viewpoints it favors. The restrictions remain blocked, pending appeal.

Texas A&M English professor Melissa McCoul sued that university after she was fired in September 2025, following a classroom discussion she led about gender identity.

Texas A&M later eliminated its women’s and gender studies degree program in January 2026.

The University of Texas at Austin consolidated four ethnic studies departments and the Women’s, Gender, and Sexuality Studies Department into a single Department of Social and Cultural Analysis in February 2026. The university is also reviewing which majors, minors and courses within that new department students may pursue and enroll in.

These changes reflect a broader political climate in which some politicians and university leaders increasingly frame gender identity and other academic subjects as ideological positions, rather than scholarly areas of research. That trend has intensified alongside the Trump administration’s executive orders, actions and rhetoric surrounding gender identity and diversity, equity and inclusion initiatives.

Limiting academic research

Texas Tech was established in 1923 to prepare students for technical and agricultural professions, and “elevate the ideals, enrich the lives, and increase the capacity of the people for democratic self-government.”

That mission reflects the American Association of University Professors’ 1940 Statement of Principles on Academic Freedom and Tenure. The statement describes universities as dedicated to “the common good” through the “free search for truth.”

Universities are therefore expected to pursue scholarly inquiry according to disciplinary standards and academic expertise, not partisan priorities. That commitment is reflected in the thesis and dissertation process, through which faculty evaluate students’ ability to conduct independent research and contribute to disciplinary knowledge.

Although disfavored on some Texas and Florida campuses, topics such as HIV disparities in LGBTQ+ populations continue to be studied elsewhere as public-health subjects. The same is true for suicide risk and family rejection among LGBTQ+ adolescents and services for transgender youth.

With such lines of inquiry curtailed, some Texas Tech students now question whether the university can still provide an “honest education.” Some Texas Tech faculty members are openly discussing looking for other jobs.

A blue pencil is positioned over a white, empty speech bubble.
Restrictions on academic freedom are prompting some Texas university faculty to consider jobs out of state.
nadia_bormotova/iStock via Getty Images Plus

Restricting academic independence

A September 2025 survey by the American Association of University Professors documented the toll of political interference on university faculty across the country, including in Texas.

One-quarter of the 1,100 Texas professors and researchers surveyed said they are seeking jobs outside the state. More than 60% said they would not encourage graduate students or colleagues to work at a university in Texas.

When the state decides which questions may and may not be researched, it is doing more than shaping curriculum. It is regulating the boundaries of knowledge itself by determining what future scholars may study and what universities are permitted to discover.

That – more than any single line in a memo – is what I believe should concern anyone who cares about the integrity of higher education. And it is precisely the danger longstanding First Amendment protections for academic freedom were designed to prevent.

The Conversation

Henry F. Fradella 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. Texas Tech’s new limits on how faculty teach gender identity and sexual orientation challenge more than free speech – https://theconversation.com/texas-techs-new-limits-on-how-faculty-teach-gender-identity-and-sexual-orientation-challenge-more-than-free-speech-282840

New SNAP rules requiring that benefits be used at stores selling healthier food could backfire

Source: The Conversation – USA (2) – By Benjamin Chrisinger, Assistant Professor of Community Health, Tufts University

A man shops at El Recuerdo Market in Los Angeles in 2025, next to a sign indicating that customers may pay with SNAP benefits. AP Photo/Damian Dovarganes

The more than 250,000 shops and stores that accept Supplemental Nutrition Assistance Program benefits as payment for groceries will have to meet tougher requirements starting on Nov. 4, 2026, according to new U.S. Department of Agriculture rules. Any retailers that accept SNAP benefits from their customers will have to stock a wider variety of food, some of it perishable.

Government officials said they introduced the new standards to make it easier for Americans who receive SNAP benefits, which help people pay for groceries, to select more nutritious options.

As a community health scholar, I’ve been following these and other changes to SNAP, the largest and most important government program for helping Americans get enough to eat. While expanding access to healthy food is a worthy goal, I fear that these new rules could have the opposite effect for people who are enrolled in SNAP.

More kinds of dairy, produce, grains and protein

Until now, small shops and big stores alike have had to stock at least three items in each of four staple food categories if they want to be able to accept SNAP benefits: dairy, produce, grains and protein.

Under the stricter new rules, all retailers accepting SNAP as payment must sell at least seven kinds of food in each of those four categories. And they need to offer at least one perishable variety in three of the four.

The rules will expand some ways that retailers can meet USDA requirements. For example, the government will accept plain, seasoned and shelf-stable meats as separate items that count as protein. And specialty retailers, such as bakeries and produce markets, will remain exempt from having to fulfill all the requirements.

But certain items that currently meet the requirements, such as beef jerky for protein or butter for dairy, no longer will.

Supermarkets and other big stores that sell groceries won’t need to do anything different to comply with the rule changes. But many convenience stores, corner markets, bodegas and other small stores will have to make changes if they want to continue to accept SNAP benefits.

What’s at stake

A big industry group that represents convenience stores and an anti-hunger organization are both warning that instead of making it easier for low-income people to follow a balanced diet, the new USDA rules might lead many small shops to stop accepting SNAP benefits.

That’s in part due to other changes those small retailers face.

More than 20 states have begun to restrict what people can buy with their SNAP benefits. Selling banned items to shoppers paying with SNAP benefits can jeopardize a store’s ability to accept those benefits.

These rules prohibit sales of soda, with some states also banning the sale of energy drinks, candy, desserts or processed foods to anyone paying with SNAP benefits. Some states, including Tennessee, are proposing additional, more complex restrictions based on ingredient lists.

Retailers will have to update their checkout systems to prevent SNAP payments on banned items, and educate staff and customers about the changes. Rather than police purchases, some stores might instead decide to stop accepting SNAP. This could leave communities with fewer options to spend SNAP benefits.

Fewer people are getting SNAP benefits

These aren’t the only challenges retailers that accept SNAP benefits face. Nationwide, the number of people who get those benefits fell by about 10% between June 2025 and February 2026, from about 42 million to 38 million. This decline isn’t happening because fewer Americans need help paying for groceries.

The big tax and spending package that President Donald Trump signed into law in 2025 is responsible. It restricted SNAP eligibility for some age groups and expanded the reach of SNAP’s work requirements.

With fewer Americans using SNAP, retailers can expect lower sales. This could be a big problem for stores whose customers rely heavily on SNAP. It’s possible that some of these stores could close.

While losing food retailers will make shopping with SNAP less convenient, it also could be bad for their former customers’ health. Research shows that people enrolled in SNAP have healthier diets when they have better access to retailers that accept SNAP as payment. And cutting their benefits has the opposite effect.

Helping small shops offer healthier options

This isn’t the first time the government has sought to make it easier to buy healthier food at small stores in low-income communities. State and local governments and researchers have worked for over a decade with the owners of those shops to procure, stock and sell healthier products.

Examples include the Healthy Corner Store Initiative in Philadelphia and Camden, New Jersey; collaborations between city officials and researchers in Baltimore; and a state-funded program to purchase equipment and health-promotion materials for small stores in rural North Carolina.

Often, these programs have assisted store owners with a mix of expertise, funding and logistics, such as new shelving and refrigeration.

While there have been successes, researchers that have evaluated these programs have found that there are many obstacles.

Role of small stores

Many smaller retailers are not familiar with how to source and stock healthier food, especially produce, and may question whether these products will sell. These initiatives are often funded on a temporary basis, meaning that store owners must maintain any changes on their own after a program ends.

For example, a refrigerator purchased for fresh fruits and vegetables can easily be repurposed to hold bottles of soda.

Efforts to get small shops to sell more nutritious food work best when they are created in partnership with store owners and tailored to fit the needs of local communities. But the USDA is not offering that kind of help.

What’s more, while most Americans buy salty or sweet treats from convenience stores, I think that these rules suggest that SNAP shoppers should not.

For more than 60 years, a cornerstone of the Supplemental Nutrition Assistance Program and the food stamp program that preceded it has always been that the people who are enrolled in it should be treated like everyone else when they buy food. I believe that the USDA’s new rules suggest that the government is moving away from that commitment.

The Conversation

Benjamin Chrisinger has received funding from USDA’s Research Innovation and Development Grants in Economics (RIDGE) Partnership. This should not be construed to represent any official USDA or U.S. government determination or policy.

ref. New SNAP rules requiring that benefits be used at stores selling healthier food could backfire – https://theconversation.com/new-snap-rules-requiring-that-benefits-be-used-at-stores-selling-healthier-food-could-backfire-282788