Leiden University was founded in 1575 and is one of the leading international research universities in Europe. The University has seven faculties: Law, Archeaology, Social Sciences, Humanities, Medicine, Natural Sciences and Governance & Global Affairs, spread over campuses in both Leiden and The Hague. Our motto is Praesidium Libertatis – Bastion of Freedom.
Leiden University harbors pioneering research and teaching based on a wide diversity of academic disciplines. The university has excellent research facilities and renowned collections, and a strong and intricate knowledge infrastructure. Over 33,000 students and almost 8,000 staff members form an open, active and engaged University community, with a deep-rooted academic freedom and an intrinsic international orientation. They are driven by the desire to know, understand, interpret and create. They work together to answer the questions of today and keep an eye to the questions of tomorrow.
You can compare throwing one of these ancient dice to a coin toss – although this discovery also underscores that dice are much older than coins.
Le 11 mars 2026, des habitants reçoivent l’aide du Programme alimentaire mondial (PAM) dans le quartier d’Al-Omada à Omdurman, la ville jumelle de Khartoum. Les comités de résistance jouent un rôle important dans la distribution d’aide à la population.
Ebrahim Hamid/AFP
Retour sur la longue histoire de la résistance civile au Soudan et sur la manière dont les réseaux communautaires et les mouvements de jeunesse jettent les bases d’un retour à l’ordre pacifique dans un pays marqué par une profonde fragmentation politique.
The US president, Donald Trump, meets with Nato secretary-general Mark Rutte at the White House in 2025.
Aaron Schwartz / EPA
The Trump administration is once again threatening to withdraw the US from Nato, citing the reluctance of the alliance to join the Iran war.
Protest action worldwide has shown unrelentless support for the people of Sudan whose community-led peacebuilding efforts continue to strive against ongoing fighting, mass displacement and afflicted medical facilities.
Philippe Gregori/Shutterstock
We look at Sudan’s long history of civilian-led resistance, and how community networks and youth movements are laying the foundations for re-establishing peaceful rule in a country marked by deep political fragmentation.
Donald Trump salutes as the remains of American soldiers who were killed in an Iranian drone attack in Kuwait are returned to the US.
Will Oliver / EPA
Iranian attacks are degrading the interceptor stocks of the US and its allies.
Trump in the war room: the US president with his national security team during the Operation Midnight Hammer strikes on Iran, June 2025.
AC NewsPhoto/Alamy Stock Photo
History tells us that a lack of understanding of war on the part of US presidents has often causec friction with their military commanders.
Experimentos sugerem que não são apenas as experiências místicas em si, mas as expectativas e contexto que levam aos benefícios observados na terapia psicodélica.
Yavuz Meyveci/Shutterstock.com
A terapia psicodélica frequentemente promete experiências místicas transcendentais. Mas pesquisas sugerem que o contexto e a expectativa podem ser mais importantes do que a viagem em si.
Psychedelic therapy often promises transcendent mystical experiences. But research suggests context and expectation may matter more than the trip itself.
A informação, antes tratada como uma ferramenta abstrata usada para rastrear estados ou probabilidades, tem sido cada vez mais reconhecida como uma quantidade física por si só, assim como a matéria ou a radiação, e isso muda totalmente nossa compreensão do Universo.
Pack-Shot/Shutterstock
Até recentemente os físicos em geral acreditavam que o tempo era uma característica básica do Universo, mas ele pode simplesmente emergir da informação cósmica.
Serving on a non-profit board can be deeply fulfilling and beneficial to the organisation.
Getty Images
The prevailing narrative that feeding the world is the preserve of industrial agriculture is based on flawed logic.
Illustration tirée de l’édition par Ambroise et Jérôme Drouart, au XVIIe siècle, du poème Civitas veri sive morum (la Cité de la vérité), de Bartolomeo del Bene (1515-1595).
University of Illinois
Crise de la démocratie et crise de la vérité sont liées. Mais nous vivons aussi une crise du sens, distincte, qu’exploitent les ennemis de la démocratie.
Federal immigration agents (ICE) have been deployed in large numbers in Minneapolis leading to a series of violent confrontations with protesters.
EPA/Craig Lassig
Scientists question whether alarming reports of plastic particles in human organs are accurate or the result of laboratory contamination.
Une sculpture représente les visages des présidents (de gauche à droite) Vladimir Poutine, Xi Jinping, Kim Jong-un et Donald Trump dans un centre commercial de Bangkok (Thaïlande), le 24 septembre 2025.
Chanakarn Laosarakham/AFP
La Russie et la Chine diffusent et promeuvent des contenus qui présentent les États occidentaux comme chaotiques, immoraux, ou tout simplement absurdes.
Ousted Venezuelan president, Nicolás Maduro, will face drug trafficking chargee in the US.
Jesus Vargas/dpa/Alamy Live News