How do harrowing war experiences affect different generations? Students have made a video about poignant family stories. They interviewed other students and writer Dubravka Ugrešić. The premiere of the film was on 4 May during the online Hour of Remembrance. Watch this online memorial.

Dr Valentina Azzarà, an honorary research fellow at the Faculty of Archaeology and an expert on prehistoric Oman, was recently invited to feature in a National Geographic documentary that aired last year. The opportunity came after a series of discussions and preparations that saw her engage with the…

Professor Joanita Vroom, together with the Royal Netherlands Institute in Rome (KNIR) offered the course Byzantine Rome in September 2023. The course, co-taught by Vroom, Letty ten Harkel and various guest lecturers, investigated the transition of the city of Rome from Late Antiquity to the Middle Ages,…

Rich, white, urban: Western politicians often represent a small segment of the population. Political scientist Hélène Landemore advocates for a more inclusive democracy. She will deliver the Cleveringa Lecture on November 26.

After a long night of partying, hundreds of people head to Leiden’s Van der Werfpark early on 3 October for a good singsong. Lecturer in Dutch literature Olga van Marion helped compile the new songbook for the occasion. Which songs were left out and which new hits have taken their place?

What’s really happening in the space between the cells in your body? With the Collagen Canvas project, students from Leiden University invite you to explore this question by blending science with art. This interactive artwork immerses you in the dynamics of the extracellular matrix—the invisible structure…

Search engines are getting better at answering our questions. And chatbots are increasingly likely to search the internet for relevant sources. ‘Search engines and chatbots will become more closely entwined’, says Professor Suzan Verberne.

Following the news that TomTom is cutting 300 jobs due to the use of artificial intelligence (AI), FGGA researchers Friso Selten and Alex Ingrams responded with opinion pieces. They place the news in a broader context and call for a more nuanced debate on AI and job losses.

How do you recount historic events if you are not allowed to talk about them? For his dissertation, Taufiq Hanafi tried to find out how a period of mass murder – despite heavy censorship – found a place in Indonesian literature. PhD defence 31 March.

Since 2009-2010, the West viewed China as more assertive. Especially after Xi Jinping came to power in 2012, the country abandoned Deng Xiaoping’s ‘low profile’ foreign policy. Friso Stevens explains in his dissertation where this change has come from. The dissertation defence is on 28 March.

How can you figure out which points lie on a certain curve? And how many possible curves do you count by a given number of points? These are the kinds of questions Pim Spelier of the Mathematical Institute studied during his PhD research. Spelier received his doctorate with distinction on June 12.

For long, the government showed little empathy for military veterans with physical or psychological scars. This is what PhD research by Theo van den Doel has revealed. The Ministry of Defence looked at each case through a legal lens. Veteran support has improved enormously since, but the policy does…

Ilja Leonard Pfeijffer delivered the Huizinga lecture on Friday 8 December in a packed Pieterskerk. The writer seized the opportunity of the 52nd edition to point out the importance of creativity, both for artists and scientists.

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

Industrial sites are built for safety, but are they prepared for security breaches? As concerns grow over threats to national security, these sites are a target. The Securdomino project built a tool to prevent malicious attacks and rethinks how we define security.

The University of St Andrews and Leiden University, with the support of a network grant from the Royal Society of Edinburgh, will be hosting a workshop series in 2022 about Ocean Governance. Academics, policy makers, and practitioners are invited to contribute via working papers. Deadline abstract:…

Interest groups seem to be going to court more often to force politicians to act. How often do they do so? And how successful are they? The Kiem project ‘Litigation in the name of public interest’ is compiling a database on this.

Leiden University staff will be starting the national staggered strike against the cuts to higher education on 10 March. The Leiden and The Hague Action Committee is calling on staff to join teach-outs at schools and other public organisations on that day.

Kees Waaldijk has worked for many years to map the rights, or lack thereof, of the gay and lesbian community across the world. As he bids farewell to the faculty, those rights are under renewed pressure. How does he reflect on his career?

‘Countering violent extremism – the international deradicalization agenda’ is the name of the book Tahir Abbas published last month. In this interview the associate professor in Terrorism and Political Violence at ISGA tells about the backgrounds and goals of the book.

Jasper Knoester is the dean of the Faculty of Science. How is he doing? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.

Secret services are engaging in increasingly extreme forms of cyber espionage. But nobody talks about this. Dennis Broeders knows why and is trying to have an open conversation about new forms of espionage. As Professor of Global Security and Technology, he will give his inaugural lecture on Friday…

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

Since May, Assistant professor BioTherapeutics Lu Su works in our faculty. Although she is still young, she already worked in many different fields and co-operated on two publications in big scientific journals. How did she become so successful and what motivates her to keep researching the possibilities…

It is with deep sorrow that we share the news that our dear colleague Andrea Evers passed away on Monday, 4 August 2025. Since 2013, Andrea had been affiliated with the Faculty of Social and Behavioural Sciences at Leiden University as Professor of Health Psychology. She was an undeniable driving force…

Betty de Jonge is a household name in our faculty. As the person behind AskBetty, she knew how to answer every question about Office. Starting this month, she has officially retired.

The night side of exoplanet WASP-43b, to the surprise of astronomers, does not appear to contain methane. It is likely that extreme winds do not allow enough time for methane to form in detectable amounts. This is the conclusion of an international team of scientists, with Leiden and Amsterdam contributions,…

That the tax authorities are allowed to impose taxes is widely known. What is less well known is when the tax authorities must impose taxes. And what to do when one set of regulations requires the tax authorities to impose taxes while other regulations prevent them from doing exactly that? Vergouwen’s…

On behalf of its students and staff, the Executive Board of Leiden University would like to express our condolences to all those affected by last Friday’s earthquake in Morocco. We would also like to offer support to all students and staff who have family or friends in the area. In the meantime, several…

Six projects from the Faculty of Humanities recently received grants of up to 750,000 euros from the NWO Open Competition. Researchers involved tell how they will spend this money.

The rules of play for researchers are becoming increasingly complex. This makes it essential that they receive the best possible support with challenges such as complicated grant procedures or strict privacy and ethics requirements. Leiden’s research support professionals have a network in which they…

From 13 to 16 July, Leiden will host the EuroScience Open Forum (ESOF), the largest multidisciplinary scientific conference in Europe. Lars van Doorn from Leiden Law School will give a presentation.

Diversity and inclusion are core values for Leiden University, and our aim is to offer all staff and students equal opportunities. As the University lacks adequate information about the cultural diversity of our staff, this spring we are taking part for the first time in the Cultural Diversity Barometer.…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

Imagine we could do what green plants can do: photosynthesis. Then we could satisfy our enormous energy needs with deep-green hydrogen and climate-neutral biodiesel. Scientists have been working on this for decades. Chemist Chengyu Liu will receive his doctorate on 8 June for yet another step that brings…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

Multidrug-resistant pathogens and worldwide pandemics are increasing, making infectious diseases more prevalent. To develop new treatments, deeper knowledge of the interaction between bacteria and human cells is required. Ariane Briegel recently became a Medical Delta professor and studies such path…

An international team led by astronomers at Leiden University has shown in laboratory experiments that sulfur can bind with ammonium under icy cosmic conditions and form a salt that sticks to dust and pebbles. The resulting sulfur salt not only helps to explain the mystery of the missing sulfur gas,…

Limburg lawyer Roger Cox has caused a legal revolution. With high-profile cases against the Dutch state and Shell oil company, he transformed the law into a tool to enforce climate policy. Leidraad alumni magazine spoke to him about a life defined by radical choices for a better world.

Adults who were abused or mistreated as a child and consequently suffer from post-traumatic stress disorder (PTSD) can benefit greatly from cognitive behavioural therapy. This is the conclusion of a study of 149 patients. Researcher and PhD candidate Chris Hoeboer is hopeful about the results and the…

When Jeanette Wagenaar read Simone van der Vlugt's De amulet (The Amulet) at the age of eleven, she decided that she too wanted to write a historical novel one day. Thirty years later, Gooilust, about Louise Blaauw-Six, has now been published.

With the retirement of Wil Roebroeks, Gerrit Dusseldorp will take his place as the archaeological representative in the Liveable Planet Interdisciplinary Programme as an Associate Professor. An expert on the behaviour of early human hunter-gatherers, he will look at the interaction between humans and…

Traces of the past remain hidden in rivers, lakes and seas. In his inaugural lecture Martijn Manders will explain why underwater archaeology is important to understanding our history.

Martina Huber, Jacqueline Labra Munoz research Alzheimer's disease. They study ferritine, iron storage in the brain. An inbalance of iron could play a role in this form of dementia.

In his new book 'Flooding and Management of Large Fluvial Lowlands', Paul Hudson Associate Professor of Physical Geography at Leiden University College in The Hague, examines human impacts on lowlands rivers. The past twenty years the pressure on large fluvial lowlands has increased tremendously because…

The human dimension must be brought back to the fore, Prime Minister Mark Rutte said in response to the child benefits scandal. But how? A group of researchers – including Leiden psychologist Sandra van Dijk – have written a book offering practical suggestions. They presented the book to Rutte on 28…

Third-year cultural anthropology student Claire van Helder (24) says she can't be kept still. She has her own blog, is active on Instagram and recently started a YouTube channel. She is a member of the student party LVS, elected to the faculty council and will become the president of WDO in September.…

Students presented the prototypes of educational tools they made in the first ten weeks of the new minor Living Education Lab. We asked two students and a teacher about their first experiences in this minor.

After various jobs as an archaeologist, alumnus Ruurd Kok became a journalist. For the ‘Traces of Leiden University’ series, he explored the past of university buildings. ‘To me, history is interesting when you can touch it.’

Opening ceremony Advanced Master programmes