Pluma de calamar y cáscara de cangrejo para mejorar la salud femenina

Source: The Conversation – (in Spanish) – By Carlos Bengoechea Ruiz, Catedrático de Universidad del área de Ingeniería Química (Químico), Universidad de Sevilla

El cangrejo rojo americano, empleado por los investigadores en su estudio, tiene en su cáscara quitina. De ella se obtiene quitosano, un compuesto con propiedades muy interesantes para la conservación de sustancias que palían los síntomas de la menopausia o síntomas indeseables de la menstruación. Wikimedia Commons., CC BY

Durante mucho tiempo, no se ha prestado la suficiente atención a etapas esenciales en la vida de las mujeres que afectan de manera diversa a su salud. Los efectos de la menstruación o la menopausia han sido, en muchas ocasiones, acallados por motivos culturales o sociales, aun cuando afectan a la mitad de la población mundial. Por suerte, existe un interés creciente en paliar esta carencia y en apostar por recursos que faciliten el bienestar de la población femenina.

Las mujeres suelen experimentar la menstruación durante aproximadamente cuarenta años de su vida, observándose diversos efectos englobados en lo que se conoce como síndrome premenstrual. Además de cambios de humor y alteraciones emocionales, se presentan una serie de síntomas físicos, como hinchazón abdominal, aumento de peso transitorio, sensibilidad en los senos (mastalgia), cefaleas, dolor articular o muscular y acné, que podrían paliarse en cierta medida si se tratan de manera adecuada.

Asimismo, la perimenopausia (transición natural hacia la menopausia) y la menopausia provocan sofocos, sudores nocturnos, irregularidades menstruales, insomnio, sequedad vaginal, cambios de humor y/o disminución de la libido. Si nos centramos en los efectos sobre la piel, la drástica caída de estrógenos y colágeno asociada a la menopausia provoca un aumento de la sequedad, flacidez, la aparición de arrugas y una epidermis más fina.

Bioactivos para la salud de la mujer

En la naturaleza, existen sustancias bioactivas que han demostrado su eficacia en la formulación de productos destinados a combatir algunos de estos efectos.

Así, el ácido g-linolénico, un ácido omega-6 presente principalmente en aceites de semillas concentrados, como la borraja, posee propiedades antiinflamatorias y estrogénicas, con lo que contribuye al alivio de los sofocos, las alteraciones del sueño, la irritabilidad y la sequedad vaginal.

Por su parte, el bakuchiol es un compuesto extraído principalmente de las semillas y hojas de la planta asiática Psoralea corylifolia. Se conoce como la “alternativa vegana” al retinol, y presenta efectos similares a los estrógenos, además de propiedades antifúngicas, antibacterianas, antioxidantes, antiinflamatorias, antienvejecimiento, despigmentantes y anticancerígenas.

Otro candidato es la clorofilina, un derivado de la clorofila de las plantas con actividad antioxidante, antiinflamatoria, desodorante, aceleradora de la cicatrización de heridas, antimutagénica y anticancerígena.

Asimismo, hongos como el reishi (Ganoderma Lucidum) ayudan al organismo a gestionar el estrés físico, mental y emocional. Además, mejora los síntomas asociados a la fibromialgia, como la depresión y el dolor.

El problema de los bioactivos

Muchas de estas sustancias bioactivas tienen una estabilidad limitada, es decir, pierden propiedades a causa de su mala conservación. Por ello, el desarrollo de productos que permitan su encapsulación y protección resulta esencial para garantizar su aprovechamiento, tanto en cosméticos como en complementos alimentarios.

En la Universidad de Sevilla y la Universidad del País Vasco/Euskal Herriko Unibertsitatea (EHU) estamos trabajando precisamente en esto. Planteamos el uso de subproductos de la industria alimentaria para extraer polímeros que sirvan de vehículo para esos compuestos bioactivos y que ayuden a su conservación.

Cáscaras de cangrejo y plumas de calamar

En concreto, proponemos aprovechar las cáscaras de cangrejo procedentes de las marismas del Guadalquivir (Sevilla) y la pluma del calamar (País Vasco). Actualmente, el cangrejo rojo americano es la base de una industria relevante en Isla Mayor (Sevilla), con una facturación que ha llegado a los 20 millones de euros anuales. Solo una pequeña parte del cangrejo es comestible (entre el 10 y el 30 %); el resto se emplea actualmente como pienso animal debido a su valor nutritivo. Sin embargo, su elevado contenido en quitina abre la puerta a su uso en productos de mayor valor añadido.

Algo similar ocurre con los calamares, una de las especies comerciales más importantes de cefalópodos, con un alto valor de mercado. Las llamadas plumas de calamar (estructura de soporte, con forma de pluma, ubicada internamente en la línea media dorsal de los calamares), un subproducto de la industria de procesado de este cefalópodo, están compuestas principalmente por proteínas y quitina.

El empleo de esta quitina para promover el curado de heridas crónicas ha sido previamente analizado por investigadores e investigadoras de la EHU. Además, la transformación de la quitina en quitosano mediante modificación química controlada permite potenciar propiedades como su actividad antimicrobiana, biocompatibilidad y biodegradabilidad. Esto lo convierte en un candidato muy interesante para encapsular y proteger las sustancias bioactivas antes descritas.

Podemos emplear el quitosano en la formulación de emulsiones, tanto alimentarias como cosméticas, diseñadas para conservar el bioactivo de interés. En este sentido, hemos demostrado que el control del proceso de conversión de quitina a quitosano permite modular su papel en la estabilización.

Estos avances constituyen un primer paso no solo para el desarrollo de emulsiones, sino también para productos destinados a promover la salud femenina –como parches transdérmicos o snacks saludables– que empleen el quitosano en la encapsulación de bioactivos como el g-linolénico, el bakuchiol, la clorofilina o el hongo adaptógeno reishi.

The Conversation

Carlos Bengoechea Ruiz recibe fondos de Ministerio de Ciencia, Innovación y Universidades (PID2024-155507OB-C21).

Koro de la Caba Ciriza recibe fondos del Ministerio de Ciencia, Innovación y Universidades.

Nuria Calero Romero recibe fondos del Ministerio de Ciencia, Innovación y Universidades

ref. Pluma de calamar y cáscara de cangrejo para mejorar la salud femenina – https://theconversation.com/pluma-de-calamar-y-cascara-de-cangrejo-para-mejorar-la-salud-femenina-273829

Universitarios con misión: bien común, innovación social y lucha contra la soledad en zonas rurales

Source: The Conversation – (in Spanish) – By Mónica Matellanes Lazo, PhD. Full Professor at the University in Communication and Advertising. Department of Social Sciences, Universidad Europea Miguel de Cervantes

JP WALLET/Shutterstock

Algo está cambiando en la universidad española. Más allá de las aulas y los laboratorios, surgen proyectos diversos. Contra la soledad en municipios rurales, iniciativas de envejecimiento activo, programas de innovación para mejorar la calidad de vida y nuevas narrativas sobre el bien común. No se trata de declaraciones de intenciones. Son experiencias ya en marcha, que muestran cómo la educación superior está ampliando su papel en la sociedad.

En este sentido, la universidad se posiciona como un agente de valor social, capaz de generar impacto real en su entorno y contribuir activamente al bien común.

¿Está la universidad ocupando el lugar que durante siglos desempeñaron las instituciones religiosas en la formación moral de las nuevas generaciones? En un artículo publicado en The New Yorker, Jay Caspian Kang plantea que, al menos en determinados contextos occidentales, el campus se ha convertido en el nuevo espacio de socialización ética para muchos jóvenes.

La reflexión apunta a un fenómeno significativo: la universidad no solo transmite conocimiento, sino que también moldea valores, discursos públicos y formas de entender el bien común.

La universidad como ecosistema

Organismos internacionales como la UNESCO han subrayado que la educación superior debe desempeñar un papel clave en la promoción de la justicia social, la sostenibilidad y la cohesión comunitaria.

Esta visión implica entender la universidad no solo como un espacio de aprendizaje académico, sino como un ecosistema. En él se cultivan valores éticos, pensamiento crítico y compromiso cívico. La pregunta ya no es si la universidad debe implicarse en los problemas sociales, sino cómo hacerlo de manera estructural y coherente.

En España, numerosas universidades han comenzado a materializar este enfoque a través de programas de implicación con la sociedad, voluntariado universitario e innovación social. Estas iniciativas permiten que el conocimiento teórico adquirido en las aulas se transforme en acción. Así, los estudiantes se conectan con realidades sociales concretas, lo que fomenta una experiencia educativa más significativa.

Motores del cambio social

Un ejemplo destacado lleva el sello de la Universidad de Barcelona (UB), pionera en la implantación de proyectos sociales integrados en los planes de estudio. Desde la Cátedra de Aprendizaje Servicio, los estudiantes aplican sus conocimientos en colaboración con entidades sociales. El trabajo se desarrolla en ámbitos como la inclusión social, la educación comunitaria o la atención a colectivos vulnerables.

El proyecto community, que promueve encuentros sociodeportivos, reúne a la UB junto a organizaciones como Cruz Roja o CEAR (Comisión Española de Ayuda al Refugiado). Esta apuesta por la inclusión social de refugiados a través de actividades físicas muestra cómo la docencia universitaria puede vincularse directamente con necesidades sociales reales. Esta conexión genera un aprendizaje más profundo y mayor conciencia del impacto social de la futura profesión.

También la Universidad de Deusto ha consolidado un modelo educativo centrado en la formación integral de la persona. El compromiso social forma parte del proyecto institucional. A través del programa Deusto Campus Solidaridad, la universidad promueve el voluntariado, la cooperación al desarrollo y la participación en causas sociales, tanto en el ámbito local como internacional.

Las iniciativas no se limitan a la acción directa, sino que incorporan espacios de reflexión crítica y formación ética. Esto permite desarrollar competencias como la empatía, la responsabilidad social y la conciencia ciudadana.

Tecnología para el bien común

Por su parte, la Universitat Politècnica de Valencia (UPV) ofrece un ejemplo significativo de innovación tecnológica orientada al bien común. Desde su área de UPV Innovación y los programas de “aprendizaje servicio”, la universidad impulsa proyectos de emprendimiento e innovación social. Estos abordan retos como la accesibilidad, la sostenibilidad urbana o la mejora de la calidad de vida de colectivos vulnerables.

La tecnología deja de ser un fin en sí mismo para convertirse en una herramienta al servicio de la sociedad. Un enfoque que integra formación técnica y compromiso social.

Otro caso relevante es el de la Universidad de Salamanca. A través de su Servicio de Asuntos Sociales y sus programas de voluntariado universitario, ha impulsado iniciativas vinculadas al envejecimiento activo, la participación comunitaria y la cooperación social.

Lucha contra la soledad en zonas rurales

Algunos de estos proyectos, como el Campus Rural de la Universidad de Alcalá (UAH), tienen un impacto directo en entornos no urbanos. Su contribución se orienta a combatir la soledad no deseada y favorecer relaciones intergeneracionales. Estas experiencias no solo benefician a la comunidad, sino que sensibilizan a los estudiantes sobre uno de los grandes desafíos sociales contemporáneos.

La Universidad Europea Miguel de Cervantes de Valladolid (UEMC) también trabaja sobre zonas rurales e impulsa acciones de concienciación e intervención sobre soledad no deseada. El abordaje implica a la propia comunidad universitaria desde su entorno más cercano.

El proyecto reúne a estudiantes los grados de Periodismo, Publicidad y Relaciones Públicas. La metodología aplicada se basa en el aprendizaje activo, la interdisciplinariedad y la participación del alumnado en contextos reales. A través de asignaturas como periodismo radiofónico o crítica y análisis de campañas, los alumnos diseñaron entrevistas, reportajes y campañas de sensibilización.

La UEMC consigue así desarrollar eventos de impacto académico y social desde sus espacios universitarios, involucrando a profesores, alumnos y asociaciones sin ánimo de lucro.

Desde hace varios años esta misma universidad cuenta con una unidad llamada Laboratorio Social. En ella se trabajan temáticas y proyectos de índole social que implica a profesorado y alumnado de la comunidad universitaria UEMC.

Estos ejemplos evidencian una tendencia creciente: la universidad como espacio de innovación social y laboratorio de ciudadanía responsable.

Una narrativa del bien común

Desde el ámbito de la comunicación y la publicidad, este enfoque resulta especialmente relevante porque la universidad tiene la capacidad de generar nuevos relatos sociales, alejados del individualismo y orientados al bien común. Formar en una comunicación ética y socialmente responsable implica dotar a los estudiantes de herramientas para influir positivamente en la opinión pública y contribuir a una sociedad más justa y cohesionada.

Este papel activo requiere una apuesta institucional clara y sostenida, en la que se den a conocer y alienten colaboraciones conjuntas entre universidades y agentes institucionales.

Integrar el compromiso social en los planes de estudio, reconocer académicamente estas experiencias y fomentar la colaboración con el tejido social son pasos fundamentales para consolidar este modelo educativo y evitar que estas iniciativas se conviertan en acciones puntuales.

The Conversation

Las personas firmantes no son asalariadas, ni consultoras, ni poseen acciones, ni reciben financiación de ninguna compañía u organización que pueda obtener beneficio de este artículo, y han declarado carecer de vínculos relevantes más allá del cargo académico citado anteriormente.

ref. Universitarios con misión: bien común, innovación social y lucha contra la soledad en zonas rurales – https://theconversation.com/universitarios-con-mision-bien-comun-innovacion-social-y-lucha-contra-la-soledad-en-zonas-rurales-273714

Por qué, incluso con buenos datos, a veces las organizaciones se equivocan

Source: The Conversation – (in Spanish) – By Elene Igoa Iraola, Profesora e Investigadora Universitaria, Facultad de Ciencias de la Salud, Universidad de Deusto

VectorMine/Shutterstock

Desde que nos despertamos hasta que nos acostamos tomamos miles de decisiones, en muchas ocasiones de manera inconsciente. Algunas son del día a día y no tienen mayores consecuencias (por ejemplo, qué ropa ponernos o qué camino elegir para ir al trabajo), pero hay otras que impactan directamente en nuestra vida profesional.

Muchas de estas decisiones no pasan por un análisis personal consciente, simplemente suceden. Y, sin embargo, tienen implicaciones mucho más relevantes de lo que solemos imaginar. En ellas influyen nuestros hábitos, nuestras creencias, el contexto en el que nos movemos e incluso el estado emocional del momento.

¿Cuántas de las decisiones que tomamos cada día son realmente conscientes?
¿Hasta que punto nuestras elecciones profesionales responden a un análisis racional o, simplemente, a intuiciones que apenas percibimos?

Dos maneras de pensar y decidir

Nuestra mente opera a través de dos sistemas de toma de decisiones. El primero, el tipo 1, es automático, rápido e intuitivo. Funciona casi sin esfuerzo consciente y nos permite reaccionar con agilidad ante estímulos cotidianos. El segundo, o tipo 2, es más reflexivo, analítico y deliberado; requiere mayor atención y energía cognitiva.

Este modelo fue popularizado por Daniel Kahneman, quien mostró que ambos sistemas no son opuestos, sino complementarios:

  • El pensamiento Tipo 1 es extraordinariamente eficiente. Gracias a él podemos reconocer patrones, interpretar emociones y tomar decisiones rápidas cuando el tiempo lo premia. Sin embargo, precisamente por su rapidez, también es más vulnerable a los atajos mentales. Cuando estos atajos generan errores de manera sistemática y predecible, hablamos de sesgos cognitivos.

  • El pensamiento Tipo 2, más lento y exigente, permite contrastar información, cuestionar supuestos y evaluar alternativas. Pero no puede estar activado permanentemente porque consume muchos recursos cognitivos y energía. Por eso, en entornos de presión, incertidumbre o sobrecarga informativa –es decir, en la mayoría de las organizaciones actuales– tendemos a apoyarnos más de lo que creemos en el sistema automático.

Cómo influyen los sesgos en la empresa

Los sesgos cognitivos no son rarezas psicológicas ni errores de personas poco competentes. Son patrones universales de toma de decisiones y afectan a directivos, mandos intermedios y profesionales técnicos por igual.

En la selección de personal, por ejemplo, puede aparecer el sesgo de afinidad: tendemos a valorar mejor a quienes se parecen a nosotros en trayectoria, estilo o forma de comunicarse.

En la evaluación del desempeño, el efecto halo puede llevarnos a extrapolar una cualidad positiva concreta a la valoración global del profesional.

En la gestión del cambio, el sesgo de statu quo nos inclina a preferir mantener lo conocido antes que asumir la incertidumbre de lo nuevo.

Cuando estos mecanismos se repiten, generan decisiones que parecen razonables en el momento, pero que pueden afectar a la diversidad, la innovación o la competitividad a medio plazo.

En la actualidad se pueden identificar más de 200 sesgos cognitivos que influyen en nuestra manera de interpretar y tomar decisiones.

El mito de la objetividad organizacional

Muchas organizaciones invierten grandes cantidades de recursos en datos, indicadores y herramientas tecnológicas. Sin embargo, con frecuencia se descuida un elemento esencial: el proceso psicológico mediante el cual interpretamos esa información.

Cuando interpretamos datos o la conducta de un compañero, la información pasa inevitablemente por nuestras expectativas previas, experiencias acumuladas y marcos mentales. Dos directivos pueden analizar el mismo informe y llegar a conclusiones distintas no por falta de rigor, sino porque sus sistemas de pensamiento activan distintos supuestos.

Creer que la incorporación de más datos elimina los sesgos es, en gran medida, una ilusión. Sin conciencia psicológica, incluso el análisis más sofisticado puede estar guiado por intuiciones no examinadas.

En este punto resulta pertinente recordar la reflexión del filósofo y científico Michael Polanyi, quien afirmó: “We know more than we can tell” (“Sabemos más de lo que podemos expresar”). Una parte importante de nuestro conocimiento es tácito, implícito y difícil de formalizar. Precisamente por ello, muchas decisiones se apoyan en intuiciones que no siempre somos capaces de explicar, pero que influyen de forma decisiva en nuestras elecciones.

Los campos de actuación de los sesgos

Se pueden distinguir tres niveles de actuación de los sesgos:

  1. Individual (personal). Tiene que ver con cómo cada persona percibe e interpreta la realidad. Nuestras experiencias previas, emociones o creencias influyen en qué información atendemos y cómo la interpretamos.

  2. Instrumental. Los sesgos también pueden introducirse a través de las herramientas que utilizamos para analizar la información: indicadores, métricas o sistemas de evaluación que orientan nuestra atención hacia determinados resultados y no hacia otros.

  3. Organizacional (de contexto). Factores como la cultura de las organizaciones, las normas informales, las jerarquías o las presiones del contexto pueden reforzar ciertas interpretaciones y decisiones, consolidando determinados sesgos colectivos.

Los sesgos cognitivos no son simples fallos individuales, sino mecanismos profundamente arraigados en la manera en que pensamos y decidimos. Comprender la interacción entre intuición y análisis permite mejorar la calidad de las decisiones y reducir errores.

Las organizaciones que comprendan estos procesos estarán mejor preparadas para diseñar entornos que favorezcan decisiones más conscientes, equilibradas y estratégicas. Porque en última instancia, la calidad de una organización depende también de la calidad de las decisiones que toman quienes la dirigen.

The Conversation

Las personas firmantes no son asalariadas, ni consultoras, ni poseen acciones, ni reciben financiación de ninguna compañía u organización que pueda obtener beneficio de este artículo, y han declarado carecer de vínculos relevantes más allá del cargo académico citado anteriormente.

ref. Por qué, incluso con buenos datos, a veces las organizaciones se equivocan – https://theconversation.com/por-que-incluso-con-buenos-datos-a-veces-las-organizaciones-se-equivocan-276349

The case for combined events: How decathlon and heptathlon training could solve a crisis in youth sport

Source: The Conversation – Canada – By Kurt Michael Downes, PhD Candidate, Kinesiology, University of Windsor

When the World Athletics Indoor Championships get underway in Kujawy Pomorze, Poland, on March 20, be sure to tune in to the men’s seven-event heptathlon and the women’s five-event pentathlon.

The move indoors means there are fewer events compared to the men’s decathlon (10 events) and women’s heptathlon held at outdoor events like the World Athletics Championships in Tokyo last fall and the Olympics, but these events deserve the spotlight — and not just for the incredible athleticism.

The real lessons these events offer have less to do with medals and extend far beyond winning and losing. Instead, this sport setting provides an opportunity to reimagine how we develop athletes. What if the blueprint for building better athletes isn’t about doing multiple sports, but instead about doing multiple events?

Each year, North American sport is confronted with the same problem: Growing numbers of children are pressured by parents, coaches and leagues to commit to a single sport. Before they even reach their teens, kids are “encouraged” (and by encouraged we mean pressured) to spend more time specializing in their sport to gain a competitive edge. Yet, research suggests the opposite is true: Studies consistently link early specializaton to burnout, higher rates of overuse injuries and sport dropout.

Interestingly, this paradox suggests the very pathway thought to build champions often pushes promising athletes out of sport. An alternative may be found in track and field’s combined events. The decathlon and heptathlon require athletes to run, jump and throw across a slate of events, unlike single-sport specialists.

The advantage is that the combined events allow athletes to develop every major athletic quality: speed, power, endurance, agility and strength. When you add both linear and rotational movements, you get one of the most complete athlete-development systems in sport.

In essence, the combined events represent a more updated and advanced version of the Long-Term Athlete Development Plan, a program designed to outline appropriate stages of athletic growth, build on fundamental movement skills and develop sport-specific competency while reducing injury and burnout.

As such, we ask whether a run-jump-throw system based on the combined events model could be the answer to early specialization in youth sport.

The problem of early specialization

Early sport specialization often refers to year-round participation in a single sport, a trend now common across youth athletics. Examples include young hockey, basketball and soccer players who are pushed toward club or academy teams with daily programs to stay competitive and ensure the “right” people can see them play.

These clubs and academies come with hefty tuition, major travel expenses and logistics, and they may even require kids to leave home and find room and board.

But even outside these commitments, young athletes and their families often feel the need to hire extra personal skills trainers, find additional practice time, compete on multiple teams and more throughout the year in order to keep up with their peers and squeeze every ounce of performance out of their young bodies in and out of season. Once involved in a youth sport at a competitive level, there is no time (or money) for other sports.

At first glance, practice and competition in a single sport seems like a surefire plan for success; with a “more hours equals better” mindset, how could it not? Unfortunately, research tells a different story. Studies consistently show that early specialization is not the most effective pathway to high performance, and a singular focus on one sport instead becomes a risky gamble in long-term athlete development.

Kids who focus on one sport routinely face repetitive overuse injuries, ranging from stress fractures to tendinitis and the loss of motivation to participate in sport.

What’s most concerning is that youth sport dropout rates average roughly 35 per cent per year, and early specialization is consistently linked with even higher dropout risk driven by less play, more pressure and an unbalanced developmental path.

Enter the combined events

Since reports suggest early specialization limits an athlete’s growth, we suggest looking to one of sport’s most multifaceted disciplines as the remedy. In track and field, the decathlon and heptathlon demand a broad skill set that spans the full range of athletic abilities.

Over the course of two demanding days, combined-event athletes sprint, hurdle, jump, throw and run. Scaled-down developmental versions also exist, offering age- and skill-appropriate movements instead of early mastery of a single sport.

This diversity can also align with what sport scientists describe as windows of trainability: periods when young athletes are especially primed to develop speed, agility, co-ordination and endurance. Training across multiple disciplines ensures these important windows of development are not missed.

The difference with early specialization is undeniable. While a young soccer player may log thousands of contacts with the ball by age 12, an athlete in youth combined events is learning to hurdle, jump, throw and pace distance runs. This variety builds broad physical literacy, spreads stress across the body and reduces the overuse injuries common in single-sport pathways. It provides the range, balance and adaptability youth athletes need in order to avoid the pitfalls of early specialization.

An outdoor sports events with a young woman landing a long jump in the foreground
Scaled-down developmental versions of combined events exist, offering age and skill-appropriate movements instead of early mastery of a single sport.
(Pexels/Chris I)

Why it matters for kids in sport

Ultimately, the combined events are the antidote for early specialization. Training across the sprints, jumps, throws and distance events keeps kids moving in different ways and across different planes. It avoids the monotony and repetitive stress that pushes so many away from sport.

Long-term athlete development models, which are the gold standard of athlete development across sports, promote broad skill development. Here’s why there’s such a strong case for the combined events:

For parents, coaches, schools, clubs and policymakers, the combined events have a format that can be easily delivered and easily integrated into youth sport. As an example, a youth athlete playing soccer (the most highly participated sport in Canada for ages five to 17), can become more athletically proficient during the off-season.

The goal is not to replace soccer. Instead, introducing the principles of combined events can enhance performance and enjoyment. First-step acceleration helps with breakaway speed, jumping develops power for change of direction and throwing builds muscular co-ordination and trunk strength. The combined events’ weekly rotation through sprints, jumps, throws and endurance work is supported by science.

Burnout to balance

Early specialization can look like a shortcut, but it often leads to injuries, burnout and kids leaving sport. The path meant to create champions can end careers before they start.

Combined events offer a better way, blending power, endurance, technical skill and adaptability.

The science is clear: broad experiences in childhood lay the best foundation for long-term success. Most kids won’t become decathletes or heptathletes, but the message is simple: variety matters, but only when it’s balanced, intentional and developmentally appropriate. The right mix of skills develops better young athletes and keeps them engaged.

The Conversation

Kurt Michael Downes receives funding from the Coaching Association of Ontario (CAO). He is the President and Head Coach of the Border City Athletics Club (a not-for-profit organization) and serves on the boards of Family Fuse and Resilient Kids Canada (both not-for-profit organizations).

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

ref. The case for combined events: How decathlon and heptathlon training could solve a crisis in youth sport – https://theconversation.com/the-case-for-combined-events-how-decathlon-and-heptathlon-training-could-solve-a-crisis-in-youth-sport-270263

OpenAI’s safety pledges in the wake of Tumbler Ridge aren’t AI regulation — they’re surveillance

Source: The Conversation – Canada – By Jean-Christophe Bélisle-Pipon, Assistant Professor in Health Ethics, Simon Fraser University

In a span of two days following news that the Tumbler Ridge perpetrator’s ChatGPT account had been flagged prior to the shooting, OpenAI CEO Sam Altman met with Federal AI Minister Evan Solomon and British Colombia Premier David Eby.

He secured commitments on both sides: reporting threats directly to the RCMP, retroactive review of previously flagged accounts, distress-redirect protocols, access to the company’s safety office for Canadian experts and an agreement to work with B.C. on regulatory recommendations to Ottawa.

He also agreed to apologize to the community of Tumbler Ridge, where 18-year-old Jesse Van Rootselaar killed eight people and wounded many others before dying of a self-inflicted wound. Months prior to the shooting, Van Rootselaar’s ChatGPT account had been flagged for scenarios involving gun violence. The account was banned, but not reported to law enforcement.

OpenAI’s new commitments are significant gestures. But they resolve a narrower question than the one Tumbler Ridge actually raised. As I argued earlier, the core problem was not a reporting failure. It was a governance vacuum.

What’s changed since? OpenAI has agreed to make the same type of unilateral determination it made before, but to act on it more aggressively, routing the result directly to the RCMP. That is not a fix. It is the same unaccountable architecture with a faster trigger.

The human-in-the-loop fallacy

Consider what we now know about the internal process. The shooter’s account was flagged. Human moderators reviewed the interactions. Some advocated escalating to law enforcement. Other humans, guided by the company’s own opaque thresholds, decided against it. The breakdown was not mechanical. It was institutional.

“Human in the loop” is one of the most repeated reassurances in AI safety discourse. The Tumbler Ridge case exposes its limits. Humans in the loop are only as accountable as the institutional structure around them. When that structure is a private corporation with no legally binding reporting obligations, no transparency requirements and no external oversight, the human in the loop is simply a more sympathetic face on an unaccountable system.

OpenAI has since announced that its thresholds have been updated. But updated by whom, according to what criteria, subject to what review? These remain internal decisions, invisible to the public and unreachable by Parliament.

The surveillance substitution

There is a deeper problem that receives almost no attention. The proposed settlement does not regulate AI. It regulates users.

The entire apparatus being constructed (internal threat identification, flagging, direct RCMP referral) is oriented toward monitoring what people say to AI, not toward how AI systems are designed, trained or constrained in their responses.

True AI regulation asks whether a model might facilitate or amplify harmful ideation through its interaction patterns. It asks how the system is built, what it’s tested for and what obligations attach to its deployment.

The current arrangement asks none of these questions. Instead, it builds a pipeline from private AI interactions to law enforcement, administered by a corporation, governed by proprietary policy.

I call this the surveillance substitution: a governance vacuum gets filled not with democratic regulation, but with corporate surveillance of users. It is not regulation of AI. It is regulation of the people who use AI, conducted by the AI company itself, with the police as the endpoint.

The civil liberties implications are substantial. Research on compassion-sensitive AI, including my own work on how AI systems should respond to users in vulnerable states, consistently shows that people disclose distress to chatbots precisely because the interaction feels private and non-judgmental.

If that space becomes a monitored channel where concerning disclosures trigger law enforcement referrals based on opaque corporate criteria, the most vulnerable users may stop disclosing. The chilling effect on help-seeking behaviour has not been studied, and it has not been discussed in any of the public negotiations following Tumbler Ridge.

Rational strategy, absent framework

It’s important to be precise about what OpenAI is doing. The company is not acting in bad faith. It is behaving as a rational private entity in the absence of a regulatory framework, offering the minimum viable response to political pressure while preserving as much operational autonomy as possible.

Look south and the logic becomes clearer. In the United States, the relationship between AI companies and government power is being forcibly renegotiated. The Pentagon has sought AI models with safety guardrails removed for military applications. When Anthropic resisted, OpenAI moved to fill the gap. In that context, the U.S. government commands and AI companies comply.

In Canada, the dynamic is inverted: OpenAI is not being commanded. It is volunteering concessions designed to pre-empt the kind of binding legislation that would actually constrain its operations. Support broad norms with no immediate legal force; resist specific domestic obligations that carry real consequences. This is how regulatory capture begins: not with corruption, but with convenience.

Canada has genuine leverage here: an unusual cross-party consensus that something must change, public attention that has given AI governance a human face, and a provincial government that understands the stakes.

But leverage evaporates. If the federal government accepts OpenAI’s pledges as a sufficient response, it normalizes corporate self-regulation as the baseline. Future companies will cite this arrangement as precedent. The window for legislation narrows.

What durable governance requires

The response that Tumbler Ridge demands is not more efficient surveillance of users. It is a regulatory architecture that addresses the systems themselves.

That means binding legislation with legally defined thresholds for when AI companies must refer flagged interactions to authorities: thresholds defined by Parliament, developed with mental health professionals, privacy experts and law enforcement, not inherited from a company’s terms of service.

It means an independent triage body so that flagged interactions are assessed by professionals equipped to distinguish ideation from intent, accountable to public law rather than corporate liability. And it means model-level accountability: regulatory attention that moves upstream from users to systems. How are these models designed to respond to escalating disclosures of violent ideation? What testing obligations apply? What auditing requirements exist?

These questions are absent from the current political negotiations, and their absence defines the limits of what the current pledges can achieve.

OpenAI’s commitments following Tumbler Ridge are the beginning of a conversation, not the end of one. Canada holds good cards. The question is whether it plays them, or lets the other side set the rules while the table is still being built.

The Conversation

Jean-Christophe Bélisle-Pipon does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. OpenAI’s safety pledges in the wake of Tumbler Ridge aren’t AI regulation — they’re surveillance – https://theconversation.com/openais-safety-pledges-in-the-wake-of-tumbler-ridge-arent-ai-regulation-theyre-surveillance-278364

Lorsque la guerre prend des allures de prophétie : comment les récits apocalyptiques américains façonnent la guerre contre l’Iran

Source: The Conversation – in French – By André Gagné, Full Professor, Department of Theological Studies, Concordia University

Après que les États-Unis et Israël ont commencé à bombarder l’Iran, tuant certains des plus hauts dirigeants du gouvernement, dont le Guide suprême Ali Khamenei, ainsi que plus de 1 000 civils, certains des partisans évangéliques les plus fidèles de Trump ont rapidement présenté le conflit en termes de guerre religieuse.

Le matin des attaques, le prédicateur américain Franklin Graham, président de la Billy Graham Evangelistic Association et fondateur de Samaritan’s Purse, a publié sur X : « Priez pour nos militaires engagés dans l’opération contre l’Iran, pour le président @realDonaldTrump, et pour que le peuple iranien soit libéré de l’asservissement de l’islam. »

Dans mon livre, Ces évangéliques derrière Trump : hégémonie, démonologie et fin du monde, j’explique comment le dispensationalisme prémillénariste, une des grilles d’interprétation contemporaines de la fin des temps, demeure largement influente parmi les évangéliques américains. Le dispensationalisme fonctionne pour certains évangéliques à la fois comme une méthode d’interprétation biblique et comme un cadre pour en comprendre l’histoire. Les « dispensations » désignent des périodes distinctes de l’histoire, chacune instituée par Dieu pour régir et structurer l’ordre du monde.

Le dispensationalisme enseigne que le Christ reviendra avant la fin des temps afin d’établir sur Terre un règne de paix et de justice d’une durée de mille ans, communément appelé le Millénium.

Une feuille de route méthodique

Depuis l’attaque américaine contre l’Iran, Greg Laurie, fondateur et pasteur de la Harvest Christian Fellowship en Californie, a réalisé une série de vidéos promouvant sa lecture dispensationaliste de l’actualité. Pour Laurie, le prochain événement sur « le calendrier de Dieu » est l’enlèvement de l’Église (Rapture), moment où les croyants « nés de nouveau » sont ravis au ciel. Dans certaines interprétations des prophéties bibliques, l’enlèvement est suivi de la Grande Tribulation, une période de tourmente de sept ans. Certains croient que durant cette période, le peuple juif reconstruira son temple à Jérusalem, que des jugements divins frapperont la Terre et qu’une figure politique connue sous le nom d’Antéchrist accédera au pouvoir.

Cette période culmine dans une confrontation finale entre Jésus et les nations rassemblées par l’Antéchrist contre Israël appelée Armageddon. Après ce conflit, le Christ doit établir son règne millénaire depuis Jérusalem, où les nations du monde seront placées sous son autorité.

Certains évangéliques interprètent la lutte entre l’Iran et Israël à travers ce même prisme eschatologique.

Selon leur lecture, l’Iran, connu dans l’Antiquité sous le nom de Perse, serait identifié dans certains textes prophétiques comme l’une des nations destinées à jouer un rôle dans un conflit décrit dans Ézéchiel 38–39, souvent appelé la bataille de Gog et Magog.

L’influenceuse évangélique Traci Coston a également utilisé un argument numérologique pour renforcer la caractérisation de Trump comme un nouveau roi Cyrus, une idée popularisée par Lance Wallnau, un entrepreneur pentecôtiste influent. Coston écrit que l’Iran « vit sous un régime islamique oppressif depuis 47 ans » et souligne que Donald Trump est le 47e président des États-Unis. Elle le compare à « un dirigeant politique païen » que Dieu aurait oint « pour briser des verrous et infléchir le cours de l’histoire au profit de Son peuple ».

Trump a tiré parti de telles caractérisations à son égard et a repartagé sur son compte Truth Social, le 9 mars, une prophétie de 2007 faite par Kim Clement, un musicien, pasteur et figure prophétique populaire décédé en 2016.




À lire aussi :
Les frappes américano-israéliennes contre l’Iran pourraient être un succès militaire, mais à quel prix ?


Combat spirituel et réveil de la fin des temps

Parmi certains dirigeants pro-Trump des milieux néo-pentecôtistes et néo-charismatiques, le conflit avec l’Iran est interprété comme un combat spirituel. Ils lisent les événements mondiaux comme les manifestations d’un affrontement continu entre forces divines et démoniaques, et estiment que la prière des chrétiens contribue à contenir, voire à repousser, ce qu’ils perçoivent comme des puissances maléfiques.

La veille de l’attaque, Lou Engle, prophète néo-charismatique américain, rappelle qu’en 2006, un groupe de soixante-dix croyants s’était rassemblé à Boston pour une période de prière continue de quarante jours et quarante nuits. Il cite la prophétie de Jérémie 49,34-38, qui annonce le jugement contre Élam – une région antique correspondant au sud de l’Iran actuel. S’appuyant sur ce passage, il affirme que les fidèles avaient prié pour que « Dieu brise l’arc de l’islam et établisse Son trône en Iran ».


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La fête juive de Pourim, célébrée les 2 et 3 mars, a aussi été instrumentalisée pour présenter le conflit actuel comme un combat spirituel.

Ce paradigme du combat spirituel puise ses racines dans la lecture que font certains dirigeants pentecôtistes pro-Trump des textes bibliques, où ils voient des affrontements cosmiques. C’est notamment le cas de Daniel 10,12-21, où des forces surnaturelles interviennent et influencent les conflits entre nations. En s’appuyant sur ces passages bibliques, des partisans influents de ce paradigme, comme Wallnau, affirment que c’est un « esprit territorial » qui alimente les conflits. Selon eux, seul le combat spirituel peut déloger cette influence : l’objectif est de briser le pouvoir des forces démoniaques qui entravent la diffusion de l’Évangile dans les régions réfractaires au christianisme.

De nombreux dirigeants néo-pentecôtistes pro-Trump adhèrent à une eschatologie victorieuse, selon laquelle le Royaume de Dieu s’étendra visiblement à travers le monde et l’Église connaîtra puissance, unité, maturité et gloire avant le retour du Christ.

Ce cadre offre une autre vision de la fin des temps, dans laquelle certains anticipent un grand réveil spirituel entraînant des conversions massives au christianisme.




À lire aussi :
Manifestations en Iran : « Quoi qu’il arrive, la situation s’annonce explosive »


Une vision qui ne date pas d’hier

L’idée d’un réveil spirituel mondial à la fin des temps n’est pas nouvelle. Les premiers pentecôtistes étaient convaincus de vivre dans les derniers jours et considéraient le parler en langues comme un outil missionnaire. Grâce à cette capacité surnaturelle de parler des langues qu’ils n’avaient pas apprises, ils croyaient pouvoir parcourir le monde et proclamer l’Évangile avant le retour du Christ.

Plus tard, dans les années 1940, le mouvement connu sous le nom du Nouvel ordre de la pluie de l’arrière-saison (New Order of the Latter Rain) – qui connaît un réveil en 1948 à North Battleford, en Saskatchewan – adopte une vision similaire. Ses idées exerceront finalement une influence majeure sur le mouvement charismatique et sur les églises charismatiques indépendantes dans le monde entier. Le Nouvel ordre s’est séparé du pentecôtisme classique au Canada, dénonçant la « sécheresse spirituelle » qu’il y perçoit et cherchant à vivre une expérience spirituelle renouvelée.

Des « décisions fondées sur la théologie »

Lorsque le secrétaire d’État américain, Marco Rubio, affirme que le régime iranien prend des « décisions fondées sur la théologie, leur vision de la théologie qui est apocalyptique », et que le secrétaire à la Défense, Pete Hegseth, déclare que des « régimes fous, comme l’Iran, obsédés par des délires islamistes prophétiques, ne peuvent pas posséder d’armes nucléaires ; ce n’est que bon sens », cette rhétorique tend à présenter Téhéran comme étant uniquement mue par l’extrémisme religieux.

Pourtant, des dirigeants chrétiens alliés à Donald Trump ont été accueillis au Bureau ovale pour prier et lui imposer les mains. Trump a lui-même relayé des messages prophétiques sur son ascension politique, suggérant ainsi à ses partisans que sa présidence relevait de la volonté divine.

Le contraste est saisissant. Lorsque la croyance religieuse façonne la politique de rivaux, elle est qualifiée de théologie dangereuse, mais lorsqu’elle apparaît à Washington, elle est présentée comme une manifestation de la Providence divine.

La Conversation Canada

André Gagné 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. Lorsque la guerre prend des allures de prophétie : comment les récits apocalyptiques américains façonnent la guerre contre l’Iran – https://theconversation.com/lorsque-la-guerre-prend-des-allures-de-prophetie-comment-les-recits-apocalyptiques-americains-faconnent-la-guerre-contre-liran-278747

Hundreds of hungry mosquitoes, a student volunteer and a mesh suit helped us figure out how these deadly insects reach their targets

Source: The Conversation – USA – By David Hu, Professor of Mechanical Engineering and Biology, Adjunct Professor of Physics, Georgia Institute of Technology

Trajectories of mosquitoes flying around a human target. David L. Hu, Georgia Tech

“Four minutes is too long.”

Man's arm with multiple pink raised welts
Some of Chris Zuo’s itchy results after his session with the mosquitoes.
David L. Hu

That’s the note undergraduate Chris Zuo sent me along with photos of countless mosquito bites on his bare skin. This full-body massacre wasn’t the result of a camping trip gone awry. He’d spent that limited amount of time in a room with 100 hungry mosquitoes while wearing nothing but a mesh suit we thought would have protected him.

Thus began our three-year journey trying to understand the behavior of a deceivingly simple insect, the mosquito. It may sound like a professor’s sadistic plan, but, really, we did everything by the book. Our university’s institutional review board approved our procedures, making sure Chris was safe and not coerced in any way. The mosquitoes were disease-free and native to our home state of Georgia. And this session resulted in the first and last bites anyone received during the study.

Besides my role as torturer of students, I am an author and professor at Georgia Tech with over 20 years of experience studying the movement of animals.

Mosquitoes are the world’s most dangerous animal. The diseases they carry, from malaria to dengue, cause over 700,000 deaths per year. More people have died from mosquitoes than wars.

The world spends US$22 billion per year on billions of liters of insecticides, millions of pounds of larvicides, and millions of insecticide-treated bed nets – all to fight a tiny insect that weighs 10 times less than a grain of rice and has only 200,000 neurons.

Yet, people are losing the war on mosquitoes. These insects are evolving to thrive in cities and spreading disease more rapidly with climate change. How can such simple animals find us so easily?

Scientists know mosquitoes have terrible eyesight and depend on chemical cues to make up for it. Knowing what attracts a mosquito, though, isn’t enough to predict its behavior. You can know a heat-seeking missile is drawn to heat, but you still won’t know how a missile works.

Enter Chris and his self-sacrifice in the mosquito room. By tracking the flight of many mosquitoes around him, we hoped to determine how they made decisions in response to his presence. Understanding how mosquitoes respond to humans is a first step to controlling them.

How mosquitoes zero in on their meal

Out of 3,500 species of mosquitoes, over 100 species are classified as anthropophilic, meaning they prefer humans for lunch. Certain species of mosquitoes will find the one person among a whole herd of cattle in order to suck human blood.

This is quite a feat considering mosquitoes are weak flyers. They stop flying in a slight 2-3 mph breeze, the same air speed generated by a horse’s swinging tail. In calmer conditions, mosquitoes use their minuscule brains to follow human heat, moisture and odors that are carried downwind.

Carbon dioxide, the byproduct of respiration of all living animals, is particularly attractive. Mosquitoes notice carbon dioxide as well as you notice the stink of a full dumpster, detecting it up to 30 feet (9 meters) away from a host, where concentrations dip to a few parts per million, like a few cups of dye in an Olympic-size pool.

Black outline of a G and T in left panel, in right panel black squiggles showing flight paths of mosquitoes around the letters
Like superfans, mosquitoes are drawn to the dark outline of the Georgia Tech logo.
David L. Hu, Georgia Tech

Mosquitoes’ vision isn’t much help as they hunt for their next blood meal. Their two compound eyes have several hundred individual lenses called ommatidia, each about the width of a human hair. They produce a somewhat blurry mosaic or pixelated image. Due to the laws of optics, mosquitoes can discern an adult-size human only at a few meters away. With their vision alone, they cannot distinguish a human from a small tree. They inspect every dark object.

Gathering the flight-path data

The challenge with studying mosquito flight is that, like trash-talking teenagers, most of what they do is meaningless noise. Mosquitoes flying in an empty room are largely making random changes in flight speed and direction. We needed many flight trajectories to cut through the noise.

A man lying on the ground, and shown in two images on a laptop screen in the foreground
In a mesh suit, Chris Zuo awaits the mosquitoes while questioning his life choices.
David L. Hu, Georgia Tech

One of our collaborators, University of California, Riverside, biologist Ring Cardé, told us that back in the 1980s, scientists conducted “bite studies” by stripping down to their underwear and slapping the mosquitoes that landed on their naked bodies. He said nudity prevented confounding variables, such as the color of a shirt’s fabric.

Chris and I looked at each other. Sit naked and wait to become mosquito prey? Instead, we designed the mesh suit that Chris originally wore into the mosquito room. But after seeing Chris’ bites, we needed a better way.

Instead, Chris washed long-sleeved clothes in unscented detergent and wore gloves and a face mask. Fully protected, Chris only had to stand and wait, while a cloud of mosquitoes swarmed him.

The U.S. Centers for Disease Control and Prevention introduced us to the Photonic Sentry, a camera that simultaneously tracks hundreds of flying insects in a room. It records 100 frames per second at 5 mm resolution for a space like a large studio apartment. In just a few hours, Chris and another graduate student, Soohwan Kim, generated more mosquito flight data than had previously been measured in human history.

100 mosquitoes flying around Chris Zuo for 10 minutes. Only a fraction of tracks are shown.

Jörn Dunkel, Chenyi Fei and Alex Cohen, our mathematician collaborators at MIT, told us that the geometry of Chris’ body was still too complicated to study the mosquitoes’ reactions. Mathematicians excel at simplifying complex problems to their essence. Chenyi suggested we go easy on Chris – why not replace him with a simple dummy: a black Styrofoam ball on a stick combined with a canister of carbon dioxide.

Over the next two years, Chris filmed the mosquitoes circling the Styrofoam dummies mercilessly. Then he vacuumed up the mosquitoes, trying not to get bitten.

Deciphering the trajectories

A mosquito flies like you would an airplane: it turns left or right, accelerates or hits the brakes. We determined a mosquito’s flight behavior as a function of its speed, location and direction with respect to the target as the first step in creating our model of their behavior.

Our confidence in our behavioral rules increased as we read more trajectories, ultimately using 20 million mosquito positions and speeds. This idea of incorporating observations to support a mathematical hypothesis is a 200-year-old idea called Bayesian inference. We illustrated the mosquito behavior we’d observed in a web application.

4 panels showing trajectory of a mosquito in the presence of no target, visual target, CO2 target or both.
A mosquito’s flight changes with the kind of target presented.
David L. Hu

Using our model, we showed how different targets cause mosquitoes to fly differently. Visual targets cause fly-bys, where mosquitoes fly past the target. Carbon dioxide causes double takes, where mosquitoes slow down near the target. The combination of a visual cue and carbon dioxide creates high-speed orbiting patterns.

Up until now, we had used only experiments with Styrofoam spheres to train our model. The true test was whether it could predict mosquito flights around a human. Chris returned to the chamber, this time wearing all white clothes and a black hat, turning himself into a bull’s-eye. Our model successfully predicted the distribution of mosquitoes around him. We identified zones of danger, where there was a high chance of a mosquito circling around him.

Predicting mosquito behavior is a first step toward outsmarting them. In mosquito-prone areas, people design houses with features to prevent mosquitoes from following human cues and entering. Similarly, mosquito traps suck in mosquitoes when they get too close but still allow between 50% and 90% of mosquitoes to escape. Many of these designs are based on trial and error. We hope that our study provides a more precise tool for designing methods for mosquito capture or deterrence.

When Chris’ mother attended his master’s degree defense, I asked her how she felt about her son using himself as bait for mosquitoes. She said she was very proud. So am I – and not just because I’m relieved Chris didn’t ask me to take his place in the mosquito chamber.

The Conversation

David Hu 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. Hundreds of hungry mosquitoes, a student volunteer and a mesh suit helped us figure out how these deadly insects reach their targets – https://theconversation.com/hundreds-of-hungry-mosquitoes-a-student-volunteer-and-a-mesh-suit-helped-us-figure-out-how-these-deadly-insects-reach-their-targets-278486

Evangelical holy war: Why some Christians think Trump will end the world

Source: The Conversation – Canada – By Matthew Burkholder, PhD Candidate, Theological Studies, University of Toronto

Soldiers in the United States Armed Forces have lodged more than 100 complaints with the Military Religious Freedom Foundation (MRFF) stating that their commanders are using extremist religious rhetoric to describe the U.S.-Israel war against Iran.

According to some complaints, American military commanders have told their troops the attack on Iran is a holy war, and that U.S. President Donald Trump was “anointed by Jesus to light the signal fire in Iran to cause Armageddon and mark his return to Earth.”

In a recent interview with Democracy Now!, the MRFF’s president, Mikey Weinstein, said the foundation was “inundated” with calls from soldiers indicating that commanders across the armed forces “were euphoric” because the war would serve as a way to “bring their version of weaponized Jesus back.”

The comments are among other violent religious rhetoric to come from U.S. officials. The U.S. ambassador to Israel, Mike Huckabee, caused a diplomatic row when he suggested Israel had a biblical claim to take over much of the Middle East.

The language also comes as some American officials have sought to characterize the Iranian government as fanatical. Secretary of State Marco Rubio said Iran was run by “religious fanatic lunatics.” Secretary of Defense Pete Hegseth said: “Crazy regimes like Iran, hell-bent on prophetic Islamic delusions, cannot have nuclear weapons.”

Meanwhile, American televangelist John Hagee recently claimed that Russia, Turkey, “what’s left of Iran” and “groups of Islamics” would soon invade Israel and be destroyed by God.

Democracy Now video: Whistleblowers speak out about religious extremism in military amid war on Iran.

American evangelicalism

During my PhD in Christian theology, I’ve asked why some American evangelical religious movements, which have gained increasing visibility and power through President Donald Trump’s MAGA politics shaped heavily by white Christian nationalism, embrace violent interpretations of what theologians refer to as “eschatology” (a theology of end times).




Read more:
When war looks like prophecy: How U.S. ‘end time’ narratives frame the war with Iran


While the term “evangelical Christian” is notoriously difficult to define, historian David Bebbington, who focused on these movements in the United Kingdom, delineated four broad charactersitics: a strong belief in the Bible, the death of Jesus for sins, a conversion experience and social activism.

My own research specialization is how modern Protestant Christians, including evangelical Christians, understand the significance of Jesus’s death, also referred to as the atonement, and its relationship to the end times.

Seeking Armageddon

Rhetoric about wars being religious, and Trump being divinely anointed and about to cause Armageddon, is deeply disturbing and has catalyzed condemnation from Christians in the U.S. and beyond advocating non-violent and diplomatic foreign policy.

Violent U.S. religious rhetoric being amplified with the U.S.-Israel war against Iran is associated with beliefs that once Israel is restored as a nation and the temple in Jerusalem is rebuilt, Jesus will return and judge humanity.




Read more:
As Iran war expands, some conservative Christians interpret the conflict through biblical prophecies


Christians adhering to these views read the Biblical Book of Revelation, with its vivid symbolic apocalyptic language, as making literal claims about history. They maintain their inspired and authoritative Biblical interpretation allows them to know that conflicts in the Middle East initiate God’s final act in history, with Trump seen as the dominating and aggressive man who can help usher in God’s violent judgment of his enemies.

Interpretations of Jesus’s death and violence

It’s relevant to consider how some Christian beliefs about Jesus’s death correlate with a willingness to support or justify violence.

Protestant Evangelical theologians, such as J. I. Packer and John Stott, argue that Jesus’s death primarily “paid the penalty” for human sin. They emphasize that God’s holiness requires a payment for this sin. In this framework, God orchestrates the violent death of Jesus to satisfy God’s penal justice to forgive humanity.

Non-evangelical Christians, on the other hand, like 19th-century Congregationalist Horace Bushnell and contemporary Mennonite theologian J. Denny Weaver, understand the death of Jesus as an example of God’s love.

In this interpretation, Jesus doesn’t endure violence to pay a debt to God. Instead, the death of Jesus is more akin to that of a martyr’s tragic death. These theologians reject violence as a condition for forgiveness.

A 2012 debate in the Presbyterian Church (U.S.A.) about a hymn demonstrates this tension, with a proposed change of hymn lyrics from “on that cross, as Jesus died, the wrath of God was satisfied” to “the love of God was magnified.” Ultimately, the authors rejected the proposal.

But the conflict demonstrates that Christians are passionate about their different interpretations of Jesus’s death.

Divine violence in atonement

Researchers have shown that penal atonement beliefs predict a negative association with a sense of responsibility for reducing pain and suffering in the world. This is not surprising when violence is incorporated as redemptive into theological frameworks.

I make a connection in my PhD dissertation between accepting divine violence in the atonement and divine violence in eschatology. Of course, this topic is far more complex and nuanced. Nonetheless, Christians are always going through a process of interpretation and negotiation when it comes to sacred texts.

For example, is Jesus the warrior Christ of Revelation 19 riding a warhorse to go into battle against his enemies or the teacher of peace in Matthew 21 who commands his followers to love their enemies just as God perfectly does?

Biblical interpretation and political beliefs

For those who see violence as a tool for redemption, they are more apt to subvert Jesus’s nonviolent teaching with images found in the Biblical book of Revelation. For those who see violence as incompatible with Christian ethics, they will interpret this allegorically, and with humility, paying attention to signs of God not just in their own lives and “insider” group. These two approaches will also inform political beliefs as well.

Consider a recent social media post by Reformed Baptist theologian and pastor John Piper. The post simply quotes Leviticus 19:34:

“You shall treat the stranger who sojourns with you as the native among you, and you shall love him as yourself, for you were strangers in the land of Egypt: I am the Lord your God.”

Piper was quickly labelled “woke” and pushing an “irresponsible” theology by Trump supporters. American theologan Russell Moore noted years ago:

“Multiple pastors tell me, essentially, the same story about quoting the Sermon on the Mount, parenthetically, in their preaching — ‘turn the other cheek’ — to have someone come up after to say, ‘Where did you get those liberal talking points?’”

A more responsible evangelical theology

I argue Christians should not believe in a God of violent death, but life. Violent atonement and eschatology portrays a God who is not above revenge and a God who leaves most of humanity hopeless.

We are left asking a series of disturbing questions if God is indeed about to end the world with violence. Why does the tone of this theology resemble the tone of empire, which crushes enemies instead of building bridges with them? Why does Jesus, as One Person of the One God, expect his followers to love their enemies — if God the Father ultimately does not?

All Christians in the U.S. and beyond need to reject violent theology as incompatible with the love of God that was magnified on the cross.

The Conversation

Matthew Burkholder is a member of the Liberal Party of Canada.

ref. Evangelical holy war: Why some Christians think Trump will end the world – https://theconversation.com/evangelical-holy-war-why-some-christians-think-trump-will-end-the-world-277617

How hatred of Jews became a common ground for Islamic terrorists and left-wing extremists, fueling domestic terrorism

Source: The Conversation – USA – By Arie Perliger, Director of Security Studies and Professor of Criminology and Justice Studies, UMass Lowell

A woman gathers children as law enforcement responds at a Michigan synagogue after an assailant drove a vehicle into the building on March 12, 2026. AP Photo/Corey Williams

Every major escalation in the Middle East sends shock waves far beyond the region. In the United States, those shock waves arrive not as distant tremors but as catalysts for domestic radicalization and violence, particularly against Jewish communities.

The data is unambiguous.

Following the Hamas attack on Israel on Oct. 7, 2023, which led to the deaths of more than 1,200 Israelis and taking of more than 200 hostages, Israel’s military responded in a campaign that intensified the following year, killing more than 70,000 Gazans.

At the same time, in 2024 the Anti-Defamation League recorded 9,354 antisemitic incidents in the U.S. – averaging more than 25 acts per day – the highest figure in the audit’s 46-year history.

FBI hate-crime statistics documented 1,938 anti-Jewish offenses in 2024, constituting 69% of all religion-based hate crimes. Jews comprise roughly 2% of the population.

The Secure Community Network, which provides Jewish communities in North America security services, tracked over 10,000 threat incidents and suspicious-activity reports since Oct. 7, 2023, including more than 500 credible threats to life in 2024.

Research shows similar trends following past military escalations in the Middle East.

Geopolitical violence abroad translates, with alarming efficiency, into homegrown threats in the U.S. and Canada. For the first time in the ADL audit’s history, a majority of incidents in 2024, 58%, contained elements explicitly related to Israel or Zionism. As someone who has studied domestic terrorism and hate for over 20 years, such dynamics are not surprising. They illustrate what my own research and that of others calls “imported conflict.”

The recent attacks against Jewish targets in Toronto, Michigan and possibly the one in San Jose underscore that the threat is neither abstract nor hypothetical.

A rubble-filled street in the middle of damaged buildings.
On March 6, 2026, a road strewn with rubble and debris is seen after heavy Israeli strikes on Beirut’s southern suburbs.
AFPTV / AFP via Getty Images

Radicalization of strange bedfellows

Foreign conflict can become domestic violence via multiple pathways.

Left-wing extremists, Jihadi-inspired militants and far-right white supremacists occupy distinct spaces along the ideological spectrum, yet they converge on a shared target: Jews.

Each escalatory cycle in the Middle East energizes their exposure to and gradual adoption of extremist views. Online ecosystems accelerate the process dramatically.

Encrypted Telegram channels circulate operational guidance from jihadist media wings within hours of a Middle East strike, encouraging attacks against Jews wherever they can be found. On platforms like 4chan and Gab, white-supremacist accelerationists seize on the same events to amplify “great replacement” narratives casting Jews as orchestrators of unwanted demographic change.

Meanwhile, TikTok and Instagram accounts repackage eliminationist slogans, advocating the end of the state of Israel – “from the river to the sea,” “glory to the resistance” – as mainstream progressive content, reaching millions of young users whose algorithmic feeds reward outrage over nuance.

What once required years of indoctrination within a closed network can now unfold in weeks of passive scrolling.

On university campuses, the atmosphere has grown particularly volatile. Campus Jewish organization Hillel International documented 2,334 antisemitic incidents during the 2024–25 academic year, the highest since tracking began.

These confrontations involve physical intimidation, exclusion from student organizations and what the organization describes as the normalization of eliminationist language cloaked in social justice vocabulary.

Antisemitism as anti-racism

To understand the increasing ease with which geopolitical violence abroad turns into antisemitic violence in the U.S. requires understanding the ideological developments in recent progressive thinking.

One observation that our research demonstrates is that today’s antisemitism may not come from the political fringes but from within progressive movements themselves. Much of progressive ideological frameworks tend to divide the world into oppressors and oppressed. Because Jews are often seen as white, wealthy and well connected, they can get placed on the oppressor side of that line.

Intersectionality – a concept originally designed to show how different forms of disadvantage overlap – is now regularly used to justify shutting Jews out of progressive coalitions and solidarity campaigns.

According to ADL survey data, Americans who agreed with the belief that problems in the world “come down to the oppressor vs. the oppressed” were 2.6 times more likely to hold negative or stereotypical views about Jewish people compared to those who disagreed with the statement.

I believe this is not a fringe problem. Among some parts of the intellectual and cultural elite, such as parts of academia, nonprofits and political parties, hostility toward Jews has become more apparent, with some suggesting that Jews simply do not deserve the same moral sympathy extended to other minorities. In some of these circles, if you do not accept that Jewish collective life is inherently oppressive, you are labeled a bad progressive and exiled.

A coalition of progressive California Democratic delegates pushed a resolution that opponents described as a Zionism “litmus test,” effectively requiring that delegates reject Zionism to be considered legitimate progressives. The D.C. chapter of the Sunrise Movement, an influential progressive climate group, boycotted a voting rights rally because of “the participation of a number of Zionist organizations.”

Such dynamics reflect that there is little room in this framework for the complexity of Jewish history, people who have been both persecuted and resilient.

Furthermore, they can facilitate the rebranding of antisemitism as anti-racism. Some writers have noted that attacking Jewish influence can become a moral duty rather than a bigoted act. Antisemitism is renovated with concepts such as equity, decolonization and liberation, despite promoting the same traditional antisemitic tropes.

A protester holding signs picturing Israeli leader Benjamin Netanyahu with a Hitler mustache.
A woman holds signs that depict Israeli leader Benjamin Netanyahu with a Hitler mustache at a protest outside the U.N. on Sept. 25, 2025, in New York.
Alexi J. Rosenfeld/Getty Images

Strange alliance

I assert that multiple ideological movements targeting Jews reflect a deeper structural alignment between political Islam and segments of the progressive left.

Superficially, the two camps could hardly appear more different. Contemporary left-wing activism champions LGBTQ rights, environmentalism, social and economic equality, human rights and government transparency. Radical Islamist movements reject most of these commitments outright.

Beneath these contradictions appears to exist a shared ideological architecture powerful enough to sustain cooperation: anti-globalization, anti-imperialism, rejection of the Western nation-state, the primacy of collective identity over individual rights, a revolutionary vision and, most critically, a common set of enemies.

This alliance is visible in the protest movements that have erupted on American streets and campuses since the attacks of Oct. 7, 2023. Marches under the banner of Palestinian liberation routinely feature Islamist slogans such as “From the water to the water, Palestine is Arab” alongside progressive placards, or Hezbollah iconography beside “Queers for Palestine” signs. What binds this coalition is opposition to Israel, to American power, and, increasingly, to Jews as symbols of both.

For domestic security, this Red-Green alliance matters because it creates a shared radicalization experience in which grievances originating in very different worldviews are fused into a single call to action.

And as a scholar of political violence and extremism, I believe that when a progressive activist and an Islamist militant attend the same rally, share the same social media space and chant the same slogans, the boundary between political protest and operational violence becomes dangerously thin. Consider two recent cases.

In May 2025, Elias Rodriguez − steeped in anti-Zionist rhetoric and whom the ADL has called a far-left activist − shot and killed Yaron Lischinsky and Sarah Milgrim, two young Israeli Embassy staffers, outside the Capital Jewish Museum in Washington, D.C., pulling out a keffiyeh and chanting “Free Palestine” as he was subdued. Weeks later in Boulder, Colorado, Mohamed Sabry Soliman, allegedly yelling “Free Palestine,” hurled Molotov cocktails at a weekly vigil for hostages held by Hamas, killing 82-year-old Karen Diamond.

These attackers occupied different positions on the spectrum between ideological radicalism and organized militancy, but they drew from the same well of dehumanizing language that circulates freely in spaces where political protest and incitement to violence have become indistinguishable.

Foreign crises, domestic failures

The structures governing how security agencies carry out their work in the U.S. are inadequate to this challenge.

Counterterrorism agencies seem to continue to treat Islamist militancy, far-right extremism and far-left radicalism as separate, unrelated threats. But the examples above point in a different direction: Ideologically distinct movements are converging on the same target − Jewish communities.

Meanwhile, civil rights agencies and nonprofit advocacy groups struggle to name progressive antisemitism for what it is, caught between legitimate commitments to anti-racism and the uncomfortable recognition that some anti-racist discourse has itself become bigotry.

Addressing the feedback loop between Middle East escalation and domestic antisemitic violence requires an honest reckoning with all of its sources – not only the familiar threats from jihadist networks and white supremacist cells, but also the ideological currents within progressive spaces that make hatred of Jews newly respectable.

Until policymakers, educators and leaders of civil society confront this threat’s full topology, Jewish Americans will continue to face a reality in which more than half report experiencing antisemitism in the past year and nearly half doubt that their neighbors would stand with them if the worst were to come.

The Conversation

Arie Perliger receives funding from Federal grants affiliated with DHS and DOJ.

ref. How hatred of Jews became a common ground for Islamic terrorists and left-wing extremists, fueling domestic terrorism – https://theconversation.com/how-hatred-of-jews-became-a-common-ground-for-islamic-terrorists-and-left-wing-extremists-fueling-domestic-terrorism-278373

Comment le réchauffement climatique nourrit la violence

Source: The Conversation – France (in French) – By Oliver Vanden Eynde, Professeur titulaire d’une chaire et directeur de recherche CNRS, Paris School of Economics – École d’économie de Paris; Centre national de la recherche scientifique (CNRS)

Le changement climatique peut aussi nourrir, indirectement, les violences. En cause, des tensions sur l’agriculture et l’exploitation des ressources minières requise pour la transition énergétique, notamment. De quoi mieux comprendre les risques de conflit armés dans le monde.


Les événements météorologiques extrêmes deviennent de plus en plus fréquents et intenses. Ces chocs climatiques ne se contentent pas de perturber les écosystèmes : ils redessinent les dynamiques sociales, économiques et politiques à l’échelle mondiale. En parallèle, la transition vers une économie sobre en carbone, bien que nécessaire, engendre une demande sans précédent en ressources minières, comme le lithium ou les terres rares. Celles-ci sont souvent extraites dans des régions déjà fragilisées par des tensions sociales ou des conflits armés.

Le cas du conflit entre la République démocratique du Congo et le Rwanda, par exemple, dans lequel chacun accuse l’autre d’armer des groupes rebelles, arbitré finalement par les États-Unis, constitue un cas emblématique. Ce sont des terres riches en cobalt et en cuivre, marquées par des sécheresses de plus en plus prolongées et des pluies de plus en plus abondantes, sur lesquelles les populations vivent majoritairement encore de l’agriculture.

Depuis les années 2010, les économistes s’intéressent de plus en plus aux liens complexes entre toutes ces composantes : changement climatique, exploitation des ressources naturelles et risque de conflits. Aujourd’hui, nous disposons de résultats robustes, même si des zones d’ombre persistent, et de pistes concrètes pour guider l’action des décideurs publics.

L’agriculture au cœur des conflits

C’est d’abord par le truchement de l’agriculture que le mécanisme a pu être mis en évidence. Sécheresses, vagues de chaleur et inondations augmentent systématiquement la probabilité que des violences surviennent ainsi que leur intensité, en particulier dans les régions où les moyens de subsistance dépendent de l’agriculture pluviale – autrement dit directement des pluies.

Cela se joue à travers plusieurs leviers :

  • la baisse des revenus agricoles peut rendre plus attractif le fait de rejoindre des groupes armés ;

  • la rareté des ressources peut intensifier la compétition entre communautés ;

  • la chaleur elle-même peut accroître l’agressivité, même en milieu urbain.

La causalité peut cependant aussi fonctionner dans l’autre sens. En effet, les conflits dégradent souvent l’environnement : exploitation minière illégale, expansion de cultures illégales pour produire des drogues (par exemple, le pavot ou la coca), déforestation, destruction des infrastructures, pollution des rivières…

Des cercles vicieux se mettent en place, dans lesquels la détérioration environnementale et la violence s’entretiennent mutuellement.




À lire aussi :
Pourquoi les femmes souffrent davantage des catastrophes naturelles et des migrations


Quand la transition verte exacerbe les violences

Si les chocs climatiques redéfinissent ainsi les opportunités localement, les hausses du cours des ressources naturelles augmentent les enjeux des conflits. Les hausses des prix du pétrole et des métaux ont souvent intensifié les violences dans les zones de production, en particulier lorsque l’extraction est intensive en capital et que les ressources peuvent être pillées. La transition verte risque d’exacerber ces dynamiques.

La demande en « minéraux de la transition » (aussi appelés « minerais critiques ») augmente rapidement, menaçant d’amplifier cette forme de rapacité dans certaines régions, tandis que les revenus des énergies fossiles diminuent ailleurs.

Les mécanismes précis par lesquels l’activité minière déclenche des conflits dépendent également du type d’exploitation. Dans le cas d’une exploitation minière artisanale, l’emploi de la population locale joue un rôle bien plus important que dans une exploitation industrielle. En outre, la pollution due à l’extraction de ces minéraux – en particulier la contamination de l’eau – peut aussi réduire les rendements agricoles bien au-delà des sites miniers. Des moyens de subsistance sont ainsi perdus, ce qui alimente doublement les risques de conflit.

Les facteurs de risque, ainsi, se chevauchent souvent. Les régions sujettes à la sécheresse se trouvent fréquemment au-dessus de gisements minéraux. Les risques climatiques et les risques liés aux ressources pourraient s’aggraver mutuellement pour déclencher des violences, bien que ces complémentarités soient encore mal comprises.




À lire aussi :
Comment échapper à la malédiction de la rente fossile ?


Comment atténuer les risques ?

Quelles politiques publiques pourraient donc atténuer les risques de conflit ? Grâce à des évaluations rigoureuses, nous avons identifié des dispositifs qui pourraient s’avérer les plus efficaces. Les assurances individuelles et la protection sociale, tout d’abord, peuvent briser le lien entre sécheresses et recrutement par les groupes armés.

Mais leur bonne conception est cruciale : une assurance qui stabilise les revenus lors des mauvaises années peut involontairement encourager la prédation lors des meilleures récoltes. Cela requiert donc une conception minutieuse des contrats et des mécanismes de suivi crédibles.

L’irrigation, le choix de semis résistants à la sécheresse et le développement de liaisons de transport peuvent également atténuer les chocs météorologiques locaux et réduire les risques de famine. Routes et marchés peuvent néanmoins aussi aider les groupes armés à taxer le commerce ou à déplacer des marchandises de contrebande. Les choix d’infrastructures devraient donc être accompagnés de renforcements de la gouvernance.




À lire aussi :
Les routes d’Afrique de l’Ouest, terrain d’affrontements privilégié des groupes terroristes


Même avec ces protections, certains chocs nécessiteront toujours une aide humanitaire rapide. Son ciblage et le timing de son déploiement sont cruciaux. Les preuves sont mitigées sur le fait de savoir si elle atténue ou aggrave la violence, soulignant le besoin de systèmes d’alerte précoce et d’évaluation des modèles de distribution.

Réguler l’extraction des minerais et partager les bénéfices de manière crédible paraît également essentiel. La transparence et la certification peuvent réduire le financement des groupes armés dans certains contextes : caractère industriel ou artisanal de l’exploitation, proximité de frontières ou capacité de l’État, par exemple. Les mesures complémentaires comptent aussi : le partage local des revenus, les campagnes d’information qui fixent des attentes réalistes et la gestion décentralisée de l’eau et des forêts peuvent amplifier les effets positifs d’une régulation bien conçue et réduire les possibilités de capture politique.

Deux précisions s’imposent à ce stade.

  • Premièrement, atténuer les risques de conflit par des actions publiques est onéreux. Une grande partie de ces mesures coûte cependant moins cher qu’un conflit prolongé et peut apporter des bénéfices supplémentaires en termes de croissance économique.

  • Deuxièmement, la conception de politiques efficaces nécessite des preuves scientifiques supplémentaires. Des facteurs, comme la perte de biodiversité ou les migrations, sont notamment sous-étudiés comme causes de conflits. Les connaissances scientifiques à ces sujets peinent parfois à suivre le rythme des débats politiques.


Cette contribution est publiée en partenariat avec le Printemps de l’économie, cycle de conférences-débats qui se tiennent du 17 au 20 mars au Conseil économique social et environnemental (Cese) à Paris. Retrouvez ici le programme complet de l’édition 2026, « Le temps des rapports de force ».

The Conversation

Oliver Vanden Eynde est Head of Engagement pour l’initiative de recherche conjointe FCDO-CEPR sur la réduction des conflits et l’amélioration des performances économiques (ReCIPE). Il est également Theme Leader du thème du programme de recherche ReCIPE « Changement climatique, ressources naturelles et conflits ». Il a également reçu des financements de l’ANR ANR-17-EURE-0001.

Juan Vargas et Oliver Vanden Eynde ont reçu des financements, dans le cadre des travaux présentés ici, de l’initiative de recherche conjointe FCDO-CEPR sur la réduction des conflits et l’amélioration des performances économiques (ReCIPE).

ref. Comment le réchauffement climatique nourrit la violence – https://theconversation.com/comment-le-rechauffement-climatique-nourrit-la-violence-278258