The Kattekop childcare centre has provided day care for the children of staff and students at Leiden University and the LUMC for over 40 years. Time for a chat with Ellen Buschman, Kattekop director, about how things are going there.

Just a few years ago, jihadist terrorism was seen as Europe’s most pressing threat. Today, we are facing hybrid warfare and extremist groups that are undermining our safety from within. Bart Schuurman, Professor of Terrorism and Political Violence, calls for a different kind of research.

It’s Cybersecurity Awareness Month, and we’re spotlighting the importance of digital safety in the workplace. Our Chief Information Security Officer, Sylvia Bunte-Thelen, shares how staff can help keep our university a safe place to work and study. ‘We need to work together to protect our knowledge.…

How do you make lobbying and rhetoric both challenging and understandable for high school students? Professor Jaap de Jong found the answer in climate activist Greta Thunberg. Together with his colleague Arco Timmermans, he developed a digital guest lecture on how to present a convincing story.

The number of international organisations has increased over the last decades. As has the number of cities interested in housing these organisations. International organisations bring wealth to cities and help improve their reputation. They often act as a magnet for other international corporations.…

Het faillissement van zorgonderneming Co-Med stelt de curatoren voor dilemma’s. Want wie krijgen voorrang: patiënten, personeel of de schuldeisers? Universitair docent Jessie Pool, gespecialiseerd in het ondernemings- en insolventierecht, pleit voor insolventieprocedures die beter zijn toegespitst op…

The EU is aiming to deter economic coercion with a new legal instrument. Freya Baetens will elucidate this in her inaugural lecture on October 27th.

Wat weten we over de kinderen die achterblijven na (ex-)partnerdoding? Regisseur Sara Kolster en hoogleraar Marieke Liem sloegen de handen ineen om deze groep slachtoffers in beeld te brengen: met de indrukwekkende documentaire ‘Blauwdruk’ en nieuwe cijfers uit de Femicide Monitor.

Our ever-increasing reliance on software and technologies, out of convenience, necessity or otherwise, binds us to supranational and commercial companies that provide them. Is it essential that governments, universities, and researchers ensure that they continue to be in control of their data and software?…

They are big and white, devour energy and could be gathering dust in your department: old, faulty or unused fridges are anything but sustainable. This spring, staff from the Faculty of Humanities swapped 18 of these electricity guzzlers for more energy-efficient models. How did they go about this and…

In a new series we talk to past and present students who were the first in their family to go to university. In this first instalment: novelist and columnist Christiaan Weijts (1976). ‘I always felt as though someone would tap me on my shoulder once they’d discovered my clandestine presence.’

Information provided by the Tax and Customs Administration is something that concerns every citizen. So it is not surprising that the Tax hotline receives around 10 million calls each year. The Benefits Affair emphasised the citizen’s perspective in communications with the Tax and Customs Administration.…

Education, Organisation

Leiden University is celebrating its 450th anniversary in 2025 with a feast for the eyes, ears and spirit. The anniversary year opens with an extra special Dies Natalis on 7 February. Highlights includes an alumni festival, three exhibitions and a canal concert.

No fewer than 55 applications were submitted for a Kiem seed grant, an initiative for developing new interdisciplinary, interfaculty research partnerships and encounters. The draw took place on Monday for the allocation of 22 seed grants. The Executive Board was so impressed with the number of applications…

Chris Suijker, since 1 July the new director of Real Estate, likes healthy and sustainable university buildings where you ‘get the feeling you’re right at the heart of society’. Her aim is to achieve the same effect with even more buildings.

How do animals choose their partners? The answer is simple: it’s all about quality. While humans tend to wear clothes that happen to be in fashion, animals do nothing without a reason. Behind beautiful plumage or a deafening roar is only one message: I am in great shape. The evolutionary courtship displays…

Workshops, tours, talks, music, an AI photobooth, interviews, a special poem and the launch of the LUF Children’s Fund. Alumni celebrated their alma mater’s 450th birthday in style on Saturday at the massively oversubscribed Dies Natalis Festival.

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…

Our banking, DigiD and sensitive medical data: what if our entire digital infrastructure can no longer be trusted? Jelle Don has this question permanently in mind as he goes about his research. And that is no bad thing because without new digital security measures, our society will be extremely vuln…

On 7 and 8 November 2024, the International Centre for Counter-Terrorism (ICCT), the Institute of Security & Global Affairs at Leiden University, and The Netherlands’ National Coordinator for Security and Counter Terrorism (NCTV) partnered to host a ‘Blue-Sky’ Terrorist Exploitation of Artificial…

An international team of astronomers led by Dutch scientist Martijn Oei has discovered the largest pair of jets from a black hole ever seen. The 'jumbojets' extend a combined length of 140 Milky Ways. The Leiden Observatory played a prominent role in this research. The publication will feature on the…

Spui Campus, Leiden University’s fourth location in The Hague, will soon open its doors. The former V&D department store’s transformation into a university campus is becoming more visible by the week. Removal vans will soon be driving back and forth to move all the furniture there in time. The first…

Two directors. Both professors of mathematics, but one of them is a biologist. One comes, and the other goes. Roeland Merks will succeed Arjen Doelman as director of the Lorentz Center in September. What has been accomplished and what are the plans? And above all, what makes the Lorentz Center so un…

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

Do you have an innovative idea on how to improve education, but don't know what steps to take next? The Comenius programme offers a range of grants for educational innovation. A lecturer and policy adviser explain which doors the grant can open.

How can chimpanzees, so closely related to humans, have almost no sense of rhythm? ‘The best students ever’ and behavioural biologist Michelle Spierings demonstrated that chimps can actually drum and move rhythmically—each following their own unique beat.

Together with students and local residents, historians Ariadne Schmidt and Alicia Schrikker researched the Leiden Transvaal neighbourhood. They will present their findings on Thursday 20 October, at a specially organised mini-festival in the neighbourhood.

Rapid developments in DNA techniques allow researchers to find out more and more about human genetics. An international group of scientists has drawn up five ethical guidelines to ensure that this DNA research is better regulated. Leiden archaeologist Marie Soressi – one of the signatories - explains…

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…

Exceptional collaboration between physicians is needed to better understand and treat autoimmune diseases that cause inflammation in various organ systems.

PhD candidate Layla van Wieringen examined how extremist beliefs are passed on within households. In her dissertation ‘Rotten Trees, Bad Apples? Understanding the Intergenerational Transmission of Extremism’, she reveals a reality that media and politics rarely address.

Moving an electron microscope of 2000 kg is a delicate challenge. The highly sensitive instrument needed to be moved to a new measurement hall, but even a tiny bump could damage it. After a few nerve-racking weeks of preparing the move and reinstalment, the researchers finally have a verdict: the instrument…

He is always positive towards his students, helps them see the bigger picture of the programme, and tries to remind them that ‘a degree is an enormous opportunity to grow in directions that genuinely interest you.’ Thomas Moerland, assistant professor at LIACS, has been nominated for Lecturer of the…

A new year, a new project, a new name: The Hague Program on International Cyber Security. Professor Global Security and Technology Dennis Broeders was awarded a grant of 2 million Euros by the Dutch Ministry of Foreign Affairs

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.’

Studying surfaces of solid materials: it may not seem relevant to energy consumption, but it is. Marcel Rost studies how platinum electrodes wear out. Those electrodes are a crucial component in the fuel cells of hydrogen-powered cars. ‘We need to make the switch from fossil fuel energy to hydrogen.…

Who doesn't love to turn on a horror film on a rainy evening? Fortunately, it is only fiction - or is it? According to university lecturer Evert Jan van Leeuwen, modern horror says more about our society than we think. He has been nominated for the Klokhuis Science Prize for his research into addiction…

The digital society is vulnerable, as we have seen over the past weeks. Our Dean Paul Wouters shares his thoughts and encourages to recover during the time around the holidays.

Wie de Nederlandse taal spreekt, heeft betere kansen op de arbeidsmarkt. Investeer daarom in taalles van migranten, is de boodschap van wetenschapper Giacomo Boffi.

In this new series the Vice-Dean and portfolio holder of education in the board of the Faculty of Archaeology will reflect on the state of education. Posts can range from shedding light on current national shifts in the university landscape to arguments as to why it’s important to be timely with designing…

Examining cybercrime from criminological, legal, administrative, and technical perspectives. The new Bachelor's programme in Cybersecurity & Cybercrime addresses the growing demand for versatile cyber professionals..

Not all students spend the holiday season with family or friends. That is why the university is organising the fifth edition of the Winter Weeks this year. The goal remains unchanged: to offer both international and Dutch students who stay in Leiden or The Hague during the Christmas break a warm and…

The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

Exploring the minds of our primate cousins in the wild, using under-exploited observations of their travel paths. A large set of observations of the travel paths of wild primates provides new opportunities for in-depth insights in the evolution of the mental abilities that primates, including ourselves,…

‘Silence in the corridor please’ are not the words you expect to hear on an open day attended by 5,000 students. From 12 studios in Leiden and The Hague, presentations are given during the Online Master’s Open Days telling students all about their future master’s programme.

‘All the groceries, but not a fig for young workers’, read a banner during the occupation of Ahold’s headquarters in 1981. ‘For a long time, young workers were not taken seriously, but they managed to put themselves on the map’, says historian Rosa Kösters.

Lecture, NGL-lezing

Lecture, Workshop and Egeria Lecture

Middle East Studies Lecture