“How we will tackle diseases in the future starts here”

To understand which groups turn against their government, you need to understand the political culture in which they grew up, what they expect from a ‘state’ and what alternatives there are. With its long interdisciplinary experience, ASCL is often considered to be a regional expertise centre. But this…

Over the past century, the world population has grown exponentially, as has our need for energy and raw materials. If we wish to continue to live prosperously in the future, we have to radically restructure our economy and consumption. Scientific research shows us how to do this.

Researchers from the LUMC and the Universities of Granada and Almería have found a gut bacterium that is associated with stronger muscles in people and mice. Their findings, published in the journal Gut, hint at the potential for new probiotics to support muscle strength and healthy ageing.

Inspiring and relaxed – these are qualities that describe the Netherlands perfectly. At the same time, there is much more to say about the country. For instance, according to the 2018 UN Human Development Index, the Netherlands is ranked tenth among the best countries to live in.

What is the difference between a minister saying that something is possible or that it is not impossible ?

What plants grow along ditches in the Leiden region? What does this say about vegetation quality? Could it be better? Naturalis and Leiden University's Center for Environmental Sciences are looking for your help to answer these questions.

Can we really speak about Jewish musicological, musical thought and what is the essence of this thought?

This year, there are elections for the student section of the University Council, the Faculty Councils and the Student Council of LUMC, the staff section of all Faculty Councils and all Employee Councils. What topics and positions do you find important? With your vote, you ultimately have a say in university…

What makes us more than our rank

According to Afshin Ellian, Professor of Jurisprudence, the new Iran starts with a referendum. In WNL’s ‘Goedemorgen Nederland’ programme, he says: ‘You’ll need to build a wall around Iran's constitutional future.’

If researchers make their data FAIR, computers can link large quantities of data and identify patterns, thus greatly accelerating the process of arriving at new insights. In Leiden, the birthplace of ‘FAIR data’, Professor Barend Mons explains the meaning of this term.

More and more medicines are becoming available that target a tumour’s specific traits. The use of chemotherapy is continually undergoing improvement.

The Executive Board and the Board of Education of the Institute of Psychology are responsible for the organisation. A number of committees offer specialised knowlegde, such as the Research Ethics Committee. Students have a say in programme committees.

Understanding the complexities of world affairs requires an ability to think critically and to draw insights from a variety of perspectives, sources, and analytic frames. Leiden University’s Master of Arts in International Relations addresses these needs through distinctive humanities-based training…

The specialisation Global Political Economy of the master’s in International Relations at Leiden University provides you with a cutting-edge understanding of the world economy and its social and political foundations.

As children learn, develop and acquire more skills, their legal position also changes. Professor of Children’s Rights Ton Liefaard works closely together with Leiden social sciences researchers to shed light on these growing capacities and their implications for our legal system. ‘Our ideas about children’s…

Leiden archaeologists investigate how people in the past impacted their environment. Together with scientists, environmental scientists, and humanities experts, they use this information to draw conclusions about the present – and show what we can learn from it for the future.

To construct catalysts that can produce fuels from CO2 innumerable times, we need to learn much more about how catalysis works. Irene Groot is conducting groundbreaking research into catalysis at the atomic level.

To make digital communication more secure, we need to tighten up the legal frameworks and identify the biggest cyber threats.

We depend on nature for so many things: from clean water, wood and food to carbon absorption, water purification and coastal protection, as well as for relaxation, inspiration and identity. Nevertheless, our modern world putting increasing pressure on these ecosystem services. Leiden researchers investigate…

PhD candidates are encouraged to start thinking about job prospects well before the defence of their thesis. Many PhD graduates find employment in an academic or semi-academic environment.

The project interrogates the relationship between impartiality and power and asks whether impartiality as a cornerstone of global governance can – and ought to – be re-envisioned in the context of changing global governance power relations.

The project investigates the changing local context of crime dynamics and the responses by selected international organizations and national governments. It places a major emphasis on security management at the trans-national level by investigating intra-regional security cooperation between Latin America,…

Team History of Africa and the Americas

How safe do you feel when you’re walking around the streets of Leiden? Do you generally feel safe? Are there any situations when you feel unsafe in the city? These are the kinds of questions that Leiden’s City Criminologist Marianne Franken – from Leiden University – hopes to be able to answer. In collaboration…

The premier LUCIS lecture series, running since 2021. Each year, two eminent scholars visit Leiden to deliver landmark lectures in Islamic and Middle East Studies. This forum for presenting and discussing cutting-edge research brings together researchers, students, and other interested participants…

On 26 juni 2018, Claire Achmad defended her doctoral thesis 'Children’s Rights in International Commercial Surrogacy: Exploring the Challenges from a Child Rights, Public International Law Perspective'. The doctoral research was supervised by Prof. Dr. Mariëlle Bruning.

This dissertation addresses the position of artistic research within academia.

A warm welcome to the Graduate School of FGGA at Leiden University.

On 25 October 2018, Tu Zhang defended her thesis 'Public Reason Secularism: A Defense of Liberal Democracy'. The doctoral research was supervised by prof. P. Cliteur.

Leiden University opened its doors in 1575 – the very first university in the Netherlands. The law faculty was involved from the start and so in 2025 they, too, were celebrating their 450th anniversary.

The main theme of this thesis is the theoretical study of Gaussian processes as a tool in Bayesian nonparametric statistics.

To make successful communication possible, people need much more than their knowledge of the language system.

News, events, announcements, social media and more about the building of the new Middle Eastern Library in Leiden

Many Asian countries are in a process of democratisation. The expectation was that citizens would gradually gain more control over the functioning of their elites. Experts from Leiden have concluded that this process often fails to improve the quality of the administration. They researched the nature…

Energy transition will entail the construction of large numbers of new energy installations. Such construction projects may meet with opposition from people living close by. Assistant Professor Bríd Walsh investigated how the local community can best take part in such projects.

The transition from fossil fuels and the practical changes that this entails make many demands on citizens. Emma ter Mors, a psychologist and lecturer at Leiden University, is researching the factors that contribute to public perception and acceptance of new energy technologies.

When psychologists repeated a hundred studies in 2015, their results differed in two-thirds of the studies. ‘Research into research is not a luxury but a necessity,’ says Professor of Methodology and Statistics of Psychological Research Mark de Rooij. ‘My aim is to improve psychological research, to think…

IT lawyer Eduard Fosch Villaronga wants to promote diversity and inclusiveness in AI research. And that's really important, because he has observed how artificial intelligence - from Twitter to walking robots - is prejudice in terms of race, gender and sexual orientation.

Let’s get this out of the way: Hillary Clinton won the 26 September 2016 presidential candidates television debate. Handily.

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.

Joost Batenburg is a mathematician and computer scientist who works to build bridges to other disciplines. He hopes to bring intelligent software to fields where it can make a difference. Conversely, he also seeks connections to the disciplines that are needed to make AI a success.

Being a better neighbour to the nature around you

Through this research, we aim to gain a clear understanding of perceptions of safety in Leiden. The results will provide us with information about current perceptions. As Leiden’s City Criminologist Marianne Franken explains: ‘This research really focuses on Leiden’s residents. That’s why want to ask…