Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

The LUMC, Leiden University and The Hague University of Applied Sciences want to help health professionals support behaviour change in the population. Such change would help people live healthier lives and reduce their risk of disease. The Municipality of The Hague is supporting this educational project…

On Thursday 15 January 2026, the Meijers Lecture was held and the Meijers Prizes and Van Wersch Springplank Prize presented. Suzan Stoter, Dean of Leiden Law School and portfolio holder for research, introduced the lecture to a full house.

Ward Hoskens started ten years ago as an intern at one of Leiden's most iconic buildings: the Pieterskerk. Now he is doing his PhD on the question of how the function of this 'church that is no longer a church' changed over recent centuries.

Give organisms like plants and animals the freedom to move, interact and meet their own needs, and they will thrive on their own, says Professor Geert de Snoo. Our interference often ends up doing more harm than good.

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.

Stilzitten doet alumnus Bart Jansen niet graag. Zo geeft hij les in onder meer Nederland, Maleisië en Curaçao, houdt hij zich naast het recht ook graag bezig met kunst en mystiek en vindt hij naar eigen zeggen ‘alles wat fout gaat’ wel interessant aan de rechtsfilosofie. ‘Ik ben gek op veelzijdige mensen;…

The Surinamese-Dutch language, Parbo Beer and, of course, football. The ‘Dear Aunt Olga’ (‘Lieve tante Olga’) exhibition focuses on the shared Surinamese-Dutch culture. Full of cheer and with life experience to spare, ‘icon’ Aunt Olga (95) leads visitors through a shared history and does not shy away…

How did you get to where you are now? This is a key question in the Academic Life Course board game, developed by and for academics. ‘In a normal working week we hardly ever talk about the career choices we make, but with this game, we do.’

With a recently published major research project and an exhibition at the Rijksmuseum, the struggle for independence in Indonesia has been thrusted back into the spotlight. Leiden University is devoting attention to this topic as well. History students Sander van der Horst and Melle van Maanen joined…

The Executive Board of the Institute of Psychology has a new Director of Operational Management. It’s the perfect role for Paula van den Bergh. ‘For me, “connection” is a nice word. If you see the connections between things, you immediately see the logic behind the processes.’ Her career has taken her…

The nominees for the Prof. Dr. J.Th.J. van den Berg-prijs 2022 and the IRO Thesis Prize 2022. Who wrote the best bachelor thesis in Political Science?

The nominees for the IRO thesis prize 2023 and the Prof. Dr. J.Th.J. van den Berg-prijs 2023. Who wrote the best bachelor theses in Political Science?

Three projects affiliated with the university will receive grants from the Leids Mediafonds (Leiden Media Fund ed.). The money is to be spend on creating a journalistic production in collaboration with a local media partner.

When Professor of Tax Law Jan Vleggeert delivered his inaugural lecture in Leiden University’s Academy Building on 30 October 2020, only 30 people were allowed to attend due to coronavirus measures. On 10 June 2022, Vleggeert was therefore given the opportunity to deliver a lecture to a much larger…

Confidentiality clauses that contain penalty clauses in television production contracts are common, permissible and useful, but can never be invoked against disclosing misconduct, such as unacceptable behaviour. This is claimed by Dirk Visser, Charlotte Vrendenbarg and Richard Trouborst in their article…

Developing a better treatment for patients with head and neck cancer, that is what Binanox, The 2022 iGEM Leiden team, want to achieve. They hope to raise at least 10,000 euros for this cause. Support their crowdfunding campaign today.

Within her research, Janna Marie Bas-Hoogendam covers multiple fields of study, like psychology and psychiatry. For this interdisciplinary work she will receive a major private science prize from the Foundation for Interdisciplinary Behavioural Research (SIGO). Why does the Leiden neuroscientist think…

On 4 May, Leiden University remembered the victims of the Second World War from our university community. Alumni, students and present and former staff of the University came together for this Hour of Remembrance.

Education, Organisation

Quietly read a book in our new reading nook, listen to interesting and bizarre stories set in early twentieth-century Leiden, walk past literary locations in Leiden and watch the best film adapted from a Leiden novel as decided on by you. April is Literary Leiden month! A month in which we pay special…

A fresh semester means a fresh faculty calendar. There is plenty to do at the faculty again in the coming months. Five interesting activities are listed below.

On 24 May 2023, Professor Wannes VandenBussche of Ghent University delivered his inaugural lecture to accept the TPR rotating professorship in the Leiden Academy Building. The title of his inaugural lecture was: ‘De EU-dimensie van het burgerlijk bewijsrecht: een mozaïek van opportuniteiten en valkuilen’…

In het onderzoek van docent Martijn Nouwen wordt voor het eerst aan het grote publiek blootgelegd hoe de ‘geheime’ Europese Gedragscodegroep er niet in is geslaagd om verschillende vormen van schadelijke belastingconcurrentie uit te bannen.

Jessica den Oudsten won this year’s Uitgeverij Verloren/Johan de Witt thesis award for history with her master’s thesis, entitled "The descendants of Norwegian and Danish Immigrants". The prize was awarded for the eighth time in collaboration with Elsevier Weekblad. The incentive award went to Amber…

Emeritus professor Willem Otterspeer received a royal honour from mayor Henri Lenferink on Tuesday 20 September. The university historian was appointed Knight of the Order of Orange-Nassau.

During a recent event, the Leiden Institute of Environmental Sciences presented the breadth of its research on biodiversity.

Education, Research

Water damage, old restorations and copper corrosion in some illustrations. De Materia Medica has been through a lot over the centuries. The manuscript dates from 1083 AD and is one of the oldest illustrated Arabic manuscripts in the world. Due to intensive use, De Materia Medica was no longer in good…

Valedictory lecture

Inaugural lecture

The nominees for the IRO Thesis Prize 2024 and the Prof. Dr. J.Th.J. van den Berg-prijs 2024. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

Festival

PhD defence