As a mathematician, Fred Rohde (1948) explored the world of numbers. As a photographer, he captured demonstrations. And now he’s reconstructing his mother’s wartime story – an extraordinary tale of her stay with an Austrian family, the inventors of asbestos cement.

The documentary ‘De Stem van het Kind’ (The Voice of the Child) gives an impressive insight into the work of juvenile court judges. Documentary maker Pieter Fleury, Professor of Children’s Rights Ton Liefaard and juvenile court judge Johan Visser worked together for the past seven years to make the…

On December 16, 2023, our respected and beloved former colleague prof.dr.ir. Bert Peletier passed away.

How can social scientists contribute to a healthier society? That question was central to the Healthy Society Event on 9 June 2022, which successfully marked the start of a more conscious and intensive collaboration between the five Institutes of the Faculty of Social and Behavioural Sciences on education…

On a busy day, Sander Snel sees three hundred people at his coffee counter in the Herta Mohr building. ‘It's fun to remember everyone's favourite drink.’

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

The FIFA World Cup will get underway in Qatar this November – an event that has attracted much discussion in recent years. This discussion is not only centred on sport. Human rights are in the spotlights in Qatar. On Friday 30 September, Leiden University organised a debate in which experts from various…

In 2021, more than 2,600 students and staff members shared their ideas for Leiden University and the Strategic Plan for the coming years, under the banner of LDN>>>FWD. What will be the guiding principle for taking decisions? Which aspects will be emphasised? The last consultations have now been concluded…

Students and staff from Leiden University are protesting in The Hague on 25 November against the billions in cuts to higher education. ‘The cuts are a terrible idea and we want to show why’, says Claire Weeda from WOinActie. ‘Research and teaching are essential to society.’

Each scientific institute has its own dynamics. The Executive Board is visiting the different institutes to find out what is going on there. On 11 March, staff at the Institute of Tax Law and Economics talked to the Board about their teaching and research. What is going well and what are the challen…

In March, Jan Pronk starts as the new Executive Director at the Faculty of Archaeology. We sat down with him for an interview on his background, his drive, and his take on archaeology.

Many European citizens feel connected to the European Union and place trust in it, Eva Grosfeld found in her PhD research. Yet around a quarter do not identify with the EU at all. How can the EU regain their trust?

What practical steps can we take to resolve cross-border claims to looted art and prevent illicit trafficking in cultural goods? That's what the European Parliament asked Leiden legal scholar Evelien Campfens. Her advice: develop a registration system, issue art with a ‘passport’ and set up a European…

An international team of astronomers, led by Will Rocha of Leiden Observatory, using the NASA/ESA/CSA James Webb Space Telescope have discovered that the key ingredients for making potentially habitable worlds are present in early-stage protostars, where planets have not yet formed.

An international team of astronomers, including Leiden PhD student Elia Pizzati, has observed several ancient quasars that, surprisingly, appear to be floating alone in the early universe (less than a billion years after the Big Bang). Until now, astronomers, based on models, assumed that quasars are…

Andrea Warnecke joined the Institute for History in August 2021 as an Assistant Professor in the History and International Studies section. This year, she will get a tenured position. Below, she introduces herself.

Designing innovative algorithms, thinking outside the box, and brainstorming over coffee with his colleagues — this is what physicist Stefano Polla enjoys most. His success shines through in his nomination for the C.J. Kok Jury Award 2024 for PhD thesis of the Year.

Prof. Andrea Evers is a health psychologist who studies the role of behavioural factors in health and disease. As a Medical Delta Professor, she is now affiliated with Leiden University, TU Delft and Erasmus University. In that position, she conducts research at the intersection of various disciplines.…

Jorik ter Veer studied Political Science in Leiden. How does he look back on his student days?

A growing number of AI tools are being developed for the legal sector, to help professionals search lengthy texts or check court rulings. Leiden SAILS researcher Masha Medvedeva, an expert on the technical development of these systems, warns: ‘Users should know what’s under the hood.’

Laura Kamsma, Head of the International Office of our Faculty kept a travel log during her visit to the EAIE conference. You can read her report here.

Mechanics play a larger role in blood vessel formation, and other developmental biology, than previously thought. Cells appear to respond to mechanical signals, such as pressure. Through the extracellular matrix, a network of fibrous proteins, cells can supposedly exchange those mechanical signals over…

In 2025, our colleagues from the Institute of Psychology once again made a strong presence in the media. From (inter)national newspapers to podcasts, discover where they shared their expertise in the media this year.

On 22 May, astronaut André Kuipers opened the new Mediterranean garden in the Hortus. With this water-efficient garden, the Hortus aims to offer inspiration for future- and climate-proof garden planting. Prefect Paul Keßler and scientific director of the Leiden Observatory Ignas Snellen also signed…

Recognising our colleagues’ teaching efforts – and as a manager, taking steps to do so. Broadening our understanding of quality. Marieke Adriaanse, Professor of Behavioural Interventions in Population Health Management and Recognition & Rewards ambassador, can see that Academia is in Motion, but she…

The team from Universidad de los Andes (Bogotá, Colombia) came out on top at the international online Moot Court organised by Leiden University and law firm Baker McKenzie.

They are talented, independent and fit right into your team: LDE trainees. Every year, their knowledge and skills strengthen various university departments. We’re looking for new assignments for the upcoming academic year. So why not submit one, say current assignment provider Monique and trainee Ea…

Can cognitive decline in people with Parkinson’s disease be measured using digital tests at home? According to an interdisciplinary team of researchers, the answer is yes. They investigated this with a Kiem grant from Leiden University.

Also in 2024, our colleagues from the Institute of Psychology were visible in the media in various ways. Check out their appearances in Dutch media, from NRC to the Podcast psychologist.

Most students of Psychology want to work in mental healthcare (GGZ). This makes the master’s specialisation in Clinical Psychology a logical choice. It was an option for alumna Ruth van Vugt for a long time, but she decided to explore further and has since successfully completed the Health and Medical…

Over the past few years, citizen scientists from the Heritage Quest project have scoured the entire Veluwe and Utrechtse Heuvelrug areas for unknown archaeological heritage. One of the results of this research is that the number of known burial mounds in this area has doubled.

Reinout Vriesendorp has been Professor of Insolvency Law since 2016 as well as a partner at law firm De Brauw Blackstone Westbroek. For nine years, he has advanced multidisciplinary collaboration, internationalisation and high-quality education. On 9 May, he will deliver his valedictory lecture after…

How do opinions form and change in large groups of people? That's not just a sociological question, it's a mathematical one. PhD candidate Federico Capannoli studied opinion dynamics. He defended his thesis on November 19.

‘I'm setting Academia in Motion by promoting transparent and rigorous research practices and by advocating for more interaction between science and society.’ With these words, Ludo Waltman, Open Science Ambassador for Academia in Motion, highlights how he is contributing to the culture change towards…

A psychology degree, a career that started in the commercial sector and now a role where she feels she can make a difference. For alumnus Marisse van Os (34) everything has come together in her current job at an innovative mental health services provider.

The doctor suggests opting for a treatment that is better for the environment. How do patients react to this? Doctors and psychologists together discovered that this has little impact on patient confidence in the doctor.

Fossil teeth can preserve remarkable information, much like a biological identity card with data about the lives of individuals tens of thousands of years ago. By analyzing teeth, a new study published in Science Advances reconstructed the life history of four straight-tusked elephants (Palaeoloxodon…

Leiden researchers share their work with a global audience through the international journalistic platform The Conversation. What are the benefits? And how does it work? Two researchers talk about their experiences and why colleagues should consider taking the same step.

On Thursday, the 19th of March 2026, students and staff had the chance to partake in the second full-day workshop organized by the Leiden Center for the Study of Ancient Religions (L*CeSAR). This edition was centered on the role of the environment in relation to religion in antiquity.

Trinidad and Tobago, a twin-island nation, has over 300 identified archaeological sites that testify to its diverse history, covering pre-colonial, colonial, and post-colonial periods. Many of these sites were discovered by archaeologists in the 20th century and have not been regularly visited and assessed.…

Het Leids onderzoek naar gedwongen uithuisplaatsingen van kinderen heeft veel stof doen opwaaien. Op een congres bespraken meer dan 250 mensen het onderzoek verder om zo de situatie voor ouders en kinderen in de toekomst te verbeteren.

An introduction to Japanese language and culture: pupils in the enrichment classes at De Morskring primary school in Leiden and De Vink primary school in Voorschoten get this opportunity. Pupils in years 6, 7 and 8 who could do with more of a challenge follow these classes.

Astronomers in Leiden have used the Atacama Large Millimeter/submillimeter Array (ALMA) in northern Chile to produce a new detailed image of the centre of our Milky Way. This allows them to investigate the life of stars in the most extreme region of our galaxy. The Leiden scientists, led by Katarzyna…

Connecting as the magic word. Seeking new collaborations, presenting ourselves to the outside world with an open attitude and showing what we do. During the opening of the academic year on Tuesday afternoon, Dean Jasper Knoester emphasised that change and connection are necessary for the university…

What do bats do at night when they’re not hunting? Using tiny GPS trackers, Leiden researchers discovered that pond bats spend a substantial portion of the night resting – often outdoors. This surprising insight could change the way we protect them.

Gratis te downloaden voor het onderwijs: een inspiratie- en lespakket over stervormen hun symbolische betekenis en hun rol in verschillende culturen en godsdiensten.

Maryam Alqassab, an assistant professor at ICLON (Leiden University Graduate School of Teaching), helps train new PhD supervisors and knows how demanding the role can be. When asked to contribute to an online handbook for PhD supervisors, she didn’t hesitate: ‘Everything supervisors do or are involved…

An independent review committee has unanimously selected three projects to receive a grant from the Prof. Andrea Evers Fund for Health, Behaviour and Society. The fund, which was launched earlier this year, supports innovative inter- and transdisciplinary research in health and well-being.

If you work at the university and are in scale 11 or above, you have the option of concluding a function-based contract.

We provide answers here to some frequently asked questions about collaborations with the fossil fuel industry.