A record number of 417 PhD candidates defended their theses in 2016. How many of these were cum laude? What were their propositions? The advantage of dirty nappies, for example. Read about the facts and figures on PhD defences in 2016.

With the help of a LUF grant, archaeology student Anne Wagemakers investigated an archaeological assemblage in Spain. Now her research report has won the annual LISF prize.

The lecture series “Humanity in the Automated State” continued on February 12, 2026, at Leiden Law School with Professor Madalina Busuioc of VU Amsterdam, a public governance scholar, AI-DG Lab co-director, MSc programme founder, and recipient of a European Research Council grant.

Collaborating and learning from other fields – that is what bioinformatician Hannah Augustijn enjoys most about doing research. During her PhD at Leiden University, she developed new ways to search within bacteria for the antibiotics of the future.

The lecture series “Humanity in the Automated State” continued on 19 March 2026 at Leiden Law School with Dr. Mengchen Dong from the Center for Humans and Machines at the Max Planck Institute for Human Development.

On 28 November 2025, Leiden University and PLNT Leiden hosted “The Knowledge Orchard” - an event aimed at starting up/ enhancing interdisciplinary cooperation between academics at Leiden University, and improving collaboration between Leiden researchers and external partners in research and educatio…

Crises like climate change and loss of biodiversity threaten our planet. That’s why sustainability is an important topic in research and education across Leiden University. On this website you read how scientists from many disciplines work together in researching sustainability.

Overview of the main research projects at the Leiden Papyrological Institute.

This network brings together scholars whose work explores how contemporary frameworks of crisis produce experiences of the present, rehash or disrupt established narratives of the past, and broker specific outlooks on the future. We collaborate in studying these crisis-scapes and exploring how they…

Islam has a rich and fascinating history, but if you talk about it in the classroom, all kinds of opinions and emotions come up. 'How do I incorporate these responses into my lessons?' The Netherlands Institute in Morocco is organising a study trip on ‘Islam and Citizenship’. Fourteen teachers from…

On the passing of Anique Schüller

Wouter Moerland is on a two-year secondment as ecology adviser at the Municipality of Leiden. This biology alumnus talks animatedly about his work. ‘We’re working hard to increase nature’s chances in town.’

What do I do if Mum or Dad gets the virus? Could the slide at the playground have coronavirus on it? Can children die of the virus too? On 15 April, the National Science Agenda organised an hour-long session on Facebook to give children the chance to ask their questions about coronavirus. Leiden psychologist…

Since 2009, at ACPA, 95 candidates received their PhD in Creative and Performing Arts. On this page you will find an overview of ACPA's alumni.

The Leiden University Institute for History is responsible for the main part of the historical research carried out at Leiden University. The institute has a wide-ranging academic scope.

Rector Magnificus Carel Stolker will retire on 8 February. If there’s one theme running through his career, it’s the links between the University and society. In this series of pre-retirement discussions, Stolker will talk one last time to people from within and without the University. In this edition…

Arts and leisure, Arts and leisure

Like ants, termites and bees, some bacteria work together as a multicellular group. There is a strict division of labour in such colonies, to make the group more resilient to the outside world. Now researchers have found that some parts of the bacterial colony can take ‘for the greater good’ to a whole…

Professor Ignas Snellen has developed an online platform where exoplanet researchers can post videos about their work: exoplanet-talks.org. ‘For young researchers in particular it’s a way to bring their research to people’s attention.’

To develop good cancer treatments, we need to know much more about how malignant tumour cells develop. Professor Ewa Snaar-Jagalska looks at not just the effect of medication on isolated cells but also the behaviour of cancer cells in their tissue environment. Inaugural lecture on 11 December.

It is time for the international community to put a stop to war crimes – especially against medical personnel, argued international chair of Doctors Without Borders Joanne Liu in her Cleveringa lecture.

Paul Brakefield, Professor of Evolutionary Biology at the Institute of Biology in Leiden (IBL) has been awarded an ERC Advanced Grant for his research. He will receive 2.5 million euro to develop his research programme over a period of five years.

On Tuesday October 11th, ACPA’s PhD-candidate Frank Blokland will publicly defend his thesis “On the origin of patterning in movable Latin type: Renaissance standardisation, systematisation, and unitisation of textura and roman type”.

Ilze Bot wants to reduce the prevalence of cardiovascular diseases. Her research focuses on mast cells, which protect us from infections but can also make us ill.

How does language work and how do we learn a language? The more we know about language, the better we can understand how people interpret the world in words. Roberta D'Alessandro carries out research on the architecture of language. There is now a dossier about her work online.

What moral concerns do people have when they encounter the financial sector in their everyday life? Erik Bähre's ERC consolidator project 'Moralising Misfortune: A comparative anthropology of commercial insurance’ aims to find out. In collaboration with Brechtje Boeke, five short documentaries from…

Globally, the number of deaths from infections is on the rise as more bacteria become resistant to antibiotics. New classes are desperately needed. A promising resistance inhibitor is now being developed by the research group of Nathaniel Martin, Professor of Biological Chemistry. Inaugural speech on…

The D66 proposed bill on Ending Life with Dignity is inadequately substantiated and contains contradictions. This is the view expressed by Professor of Political Philosophy Paul Nieuwenburg in his inaugural lecture on 17 March.

Macrophages – the front line of our immune system – protect us from infections. But in the case of the tuberculosis bacteria, this often goes wrong. The group of Annemarie Meijer from the Leiden Institute of Biology has now discovered that macrophages in zebrafish are better able to eliminate tuberculosis…

The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.

More and more people worldwide have infections caused by bacteria that are resistant to many types of antibiotic. Why is this and how big of a problem is it?

Leiden University has awarded its prestigious University Medal to Emeritus Professor Lex van der Eb. As a pioneer in genetics and molecular biology, he received this honour for his services to science and his key role in the development of the Leiden Bio Science Park (LBSP).

In the Netherlands, 1.55 million people suffer from cardiovascular diseases. Yet, acute cardiovascular events, such as a heart attack or stroke, often occur unexpectedly. That is because many people do not know they are at risk for such an event. Immunological researcher Amanda Foks and her colleagues…

PhD candidate Dennis Wander searches for the best of both worlds. That is to say: a cancer drug that is effective and also has minimal side effects. To this end, he makes new molecules inspired by two existing medicines. And not without result: ‘We have created a new variant that is very promising.’…

To eat or get eaten. It describes the evolutionary race of snakes versus the mammals and birds that prey on these snakes. Muzaffar Ali Khan devoted his PhD to investigating the molecular mechanisms play of the evolutionary arms race, and has his promotion 16 February. What makes mammals and birds successful…

An unexpected phenomenon in a merger of a cluster of galaxies. An international team of astronomers led by Francesco de Gasperin has witnessed a gas tail of a galaxy, that slowly extinguished, but then lightened up again

Op 26 april 2012 kwamen ze samen om ervaringen te delen met Leidse staf: twaalf Chinese promovendi die in Nederland zijn in het kader van het beursprogramma van de China Scholarship Council. Tien dagen eerder, op 16 april, ontving de Universiteit Leiden een delegatie van Peking University.

Some of the most significant and surprising astronomical breakthroughs that have shaped science, technology and culture over the last century are showcased in the Above and Beyond open-source exhibition. This exhibition was commissioned within the framework of the International Astronomical Union's…

Arco Timmermans, Professor by special appointment Public Affairs, discusses the lobby that is just getting under way and is aimed at the political parties' manifestos for the upcoming election in March 2021.

When a bacterium becomes more resistant to one antibiotic, it sometimes becomes more sensitive to another. To better understand this interaction, researchers from the Leiden Institute of Biology (IBL) and the Leiden Academic Center for Drug Research (LACDR) under supervision of Daniel Rozen and Coen…

In het Leids Universitair Medisch Centrum wordt gewerkt aan de ontwikkeling van een nieuw malariavaccin dat effectiever is dan de huidige vaccins.

Antibiotic resistance is an economic problem. Pharmaceutical companies cannot earn much from antibiotic research, so they do not invest in it. This makes it important that universities do so, says Ned Buijs.

Four scientists from the Faculty of Science will receive a grant of up to 50,000 euros in the Open Competition Domain Science - XS from science financier NWO. This category emphatically strives to encourage curiosity-driven and bold research involving a relatively quick analysis of a promising idea.…