Rogier Hartendorp is professor by special appointment of social effectiveness of justice at Leiden University and a judge at The Hague District Court. So, the perfect person to liaise between our faculty and the Court. We asked him some questions about this role.

As the father of a family with four children, he already visited the Hortus regularly. Now Tom Schreuder also comes there for his work. Every day he travels from Lisse by bike. The new Director Operations calls it a ‘perfect match’.

With the departure of Janneke Mulders as Board Secretary of the Faculty of Archaeology, Hilde Adriaenssens has been enlisted as an interim until the new Secretary, Mischa Hautvast, starts in January. We sat down with both to get a clear picture of their activities and backgrounds.

How can we enhance psychology students’ sense of responsibility for their own learning? Lecturer Anouk van der Weiden led a discussion on this pressing question during the Education Kick-Off on 28 February and explains why it’s so crucial to address it collectively.

Just start somewhere: whether it's videos, board games, theatre performances, or festivals. That was one of the key insights Sophie Wintermans gained during the Science Communication Summer School. In her view, the Summer School is a great step for any scientist interested in science communication.

Inspectors at the Dutch Tax and Customs Administration can require people to provide more information relating to their tax returns. Esther Huiskers-Stoop from the Tax Law department investigated the rules in place to protect us when we are required to provide information to the tax authorities.

Rich countries are getting richer because of environmentally polluting (construction) investments from the past, largely at the expense of poor countries. This was shown by long-term economic and environmental data. 'The gap between poor and rich countries is widening.' Scientists from the Leiden Institute…

Plant biologist Pingtao Ding, assistant professor at the Institute of Biology Leiden (IBL), has received a 2.4 million European grant from the European Research Council (ERC). This ERC Starting Grant for promising young researchers allows him to unravel the molecular mechanisms by which plants resist…

LIACS assistant professor Ben van Werkhoven leads the development of software for optimising graphics processing units. By now, version 1.0 of 'Kernel Tuner' is just around the corner. This milestone shows that the software is ready for serious use.

Bacteria whirl around in the mouths of most people, forming dental plaques and sometimes causing nasty gum infections. Treponema denticola might be a dangerous pathogen, but not much is known about this bacterium. It was up to Ariane Briegel and her research group to change that.

Looking for a different approach in the ongoing discussions on the ethereal matter of Romanisation, Ana Zora Maspoli joined Miguel John Versluys’ research group as a postdoc guest researcher. While she has been active in our Faculty since February 2022, you may not have met her yet due to the Covid-19…

Organisation

Leiden PhD candidate Jo-Anne Verschoor discovered that nearly twenty percent of the bacterial strains she studied could degrade plastic, though they needed some encouragement to do so. ‘Bacteria are just like people,’ says Verschoor. Her research was published in the journal Communications Biology,…

Michaël Peyrot has been appointed professor of Comparative Indo-European Linguistics at the Leiden University Centre for Linguistics with retroactive effect from 1 January. He is looking forward to passing on his love for the subject to a new generation of students.

Writer and columnist Nicolien Mizee will be Leiden University’s new writer in residence from autumn 2023.

Publishing an article as early as during your studies. Master's students of Nanne Timmer and Astrid Weyenberg are doing it. In the new course 'Leiden Graduate Journal Culture and Society' they are creating an academic journal.

Elena Maria Rossi is fascinated by black holes. Her appointment as a professor was a long-held wish, partly because there are so few female professors in her field. ‘My appointment is also a milestone for the Leiden Observatory.’

On Tuesday, September 17th, the Dutch king, Willem-Alexander, will present the plans of the new government of the Netherlands. This government’s aspirations, led by the party (PVV) of right-wing nationalist Geert Wilders, are mostly defined by budget cuts. One of the sectors receiving such budget cuts…

How wonderful would it be to use art, technology and science in Ukraine's recovery? Young Ukrainians currently residing in Poland get guidance to develop creative programmes and activities that can later be implemented. Leiden astronomers Pedro Russo and Kateryna Frantseva cooperate in the project.

‘AI can’t do half as much as people think,’ says computer scientist and psychologist Roy de Kleijn. He tries to teach robots seemingly easy things, and keeps on discovering how smart human intelligence really is. Three things that computers are no way near doing.

In the 18th century, the French colonial empire teemed with protectionist laws. Nevertheless, businessmen from the Republic played an important role in the French economy, and thus in the colonial system. PhD student Tessa de Boer explored how this came about.

Leiden University College The Hague received the 'Top rated Programme' seal from the Keuzegids Universiteiten 2023 (Dutch University Guide). It is the tenth consecutive time the Liberal Arts & Sciences programme focusing on Global Challenges is awarded the honorary seal.

Starting 1 January 2023, Matthias Haentjens has been appointed as Professor of Civil Law at Leiden University. His expertise lies in the field of property law, insolvency law, and private international law.

We, the Executive Board and deans, have recently heard from different sources that the conflict between Israel and Hamas continues to evoke strong feelings of tension, anxiety and insecurity within our university community. We take this very seriously and so are once again addressing you all.

Kamila Smagulova recently joined the Institute for History as a PhD candidate, as part of Carolien Stolte's ERC project 'Reconciling Peace: International Coalitions for Peace in the Era of Decolonization, 1918-1970'. The project runs alongside Carolien Stolte's VIDI project 'Peace Palms. International…

With the holidays just around the corner in this dark month of December, when we light candles as a symbol of warmth and hope, we would like to take a moment to reflect on this past year. We have accomplished a great deal together but the year has been difficult at times.

From Thursday-Friday 28-29 April 2022 the Stichting Bob Wessels Insolvency Law Collection (BWILC) invites PhD students from Europe and beyond to participate in a fourth edition of the PhD workshop on European/International Insolvency Law.

Open, extravert, agreeable, stress-tolerant and conscientious. These are the character traits of surgeons according to research by the LUMC.

Within the same species of butterfly many different wing patterns can occur. How is this possible? According to researchers Ben Wielstra and Emma Berdan, of the Institute of Biology Leiden (IBL), the answer lies within supergenes. A supergene is a part of a chromosome that contains many strongly linked…

University lecturer in Management & Organisation Sarita Koendjbiharie is a welcome lecturer on The Hague campus, and not only because she takes a genuine interest in her students. In fact, Koendjbiharie brings her dog Coco to campus whenever she can.

Leiden University has a new professor. On 1 June Nadine Akkerman became Professor of Early Modern Literature and Culture, a position she feels is designed to help her help others.

A healthy and happy society. This is what researchers from the Faculty of Social Sciences are working towards, together with a selection of partners from different disciplines and regions. To further structure research about Health and Well-being, the faculty has identified three focus area’s. Researchers…

On Friday 29 August, the Wijnhaven was filled with a special mix of first-year students just beginning their academic journey, and students who, after 1,089 days of intensive study, were awarded their Bachelor’s degree in Security Studies. In two festive sessions, a total of 223 students received their…

On Prinsjesdag, 16 September 2025, the Faculty of Governance and Global Affairs (FGGA) opened the new faculty year with a reception at Wijnhaven. The opening was dedicated to the university’s lustrum theme: ‘Ahead of Time’.

Astronomers and surgeons from Leiden are collaborating with industry to develop an optical instrument that delivers faster, more accurate imaging of tumour tissue and abnormal blood flow during surgery.

Should we be growing rice and building materials instead of grass for cows? From invasive crayfish to cultural heritage and groundwater levels: ten graduating students explored the future of the Groene Hart, the rural region just outside the cities of Delft, Rotterdam and Leiden where they study.

Astronomers led by Simon Portegies Zwart used simulations to reconstruct how three stars were ejected from the star cluster R136, 60,000 years ago. The analysis reveals that five stars were involved in the event in the Tarantula Nebula.

Biologist Nataliia Machushynets felt like she was ‘looking for a needle in a haystack’, trying to find new antibiotics to help solve the problem of resistance. During her PhD research, she did find what she was looking for, in the soil beneath our feet.

During his bachelor's programme in International Studies, Tom de Groot became fascinated by the theme of peace and security. Now he designs and moderates training courses to help professionals develop further in this field.

Ontdek hoe informele gesprekken en lichaamstaal beleid beïnvloeden. Universitair docent Lianne Visser onderzoekt informele besluitvorming wereldwijd.

On top of the Gorlaeus Building’s bike parking sits a hidden green surprise: Leiden’s largest rooftop garden. Since this academic year, the garden has been open to all students and staff.

Despite being prohibited by law since 1971, race discrimination continues to exist in the Netherlands. Why is this?

Lecture

Leiden University strives to accommodate young talent, which is why it does its best to create an inspiring environment for PhD candidates. With the University Training Programme for PhDs, we offer a degree programme that is both complete and challenging.

PhD defence

Seminar

Prison and student life are worlds apart. But in the Learning Behind Bars project, Leiden criminology students get the chance to study inside prison walls with people incarcerated there.

Four researchers from Leiden University will receive funding from arthritis foundation ReumaNederland over the next five years. This should facilitate long-term research into arthritis.

Getting to know all his colleagues as fast as possible, and learning about the faculty’s strengths: these will be Jasper Knoester’s first challenges. Jasper became the new Dean of the Faculty of Science on 1 January, and he is optimistic about the corona restrictions. ‘Obviously, this isn’t the start…