‘If it rains later, then I’ll take the car.’ In order to reason, we use sentences containing ‘if’ every single day. But how does that work exactly in the Dutch language? Alex Reuneker wrote his 628 page dissertation on the subject. Ceremony on 26 January.

AI is playing an increasingly important role in our lives, but that is not without danger. Eduard Fosch-Villaronga at eLaw warns that AI does not pay enough attention to the LGBTQ community.

Biological chemist Nathaniel Martin and his team received an NWO grant to examine how blocking a specific enzyme in our body, NNMT, could be helpful in the treatment of some cancers. Trials with mice have been promising, and together with the Netherlands Cancer Institute, Martin wants to take the next…

It is with the greatest sadness that we have learned of the unexpected passing of Emma de Rijke. Emma was a student in the MA Asian Studies, having finished the BA China Studies just before she enrolled in the MA program in February 2024.

Stichting Onderwijsgeschillen (Foundation for Educational Disputes) is pleased to announce that it has established an endowed chair ‘Conflictoplossing en rechtsbescherming in het onderwijs' (conflict resolution and legal protection in education) at Leiden University.

Leiden University, together with Utrecht University, the LUMC and 10 other Dutch universities and institutes, has been awarded a grant of more than €30 million in the NWO call Roadmap Large-scale Scientific Infrastructure (GWI).

In Bronze Age Europe many bronze objects such as axes, swords and jewels were deliberately left at specific spots in the landscape. PhD research by Leiden archaeologist Marieke Visser shows that these practices were expressions of people’s relationship with the world around them. ‘It was a completely…

After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’

In April 2025, Ms. Esther Rachow from The Hebrew University in Jerusalem presenting her ongoing doctoral research at an Austria Centre Leiden lunch-time talk. She answered a few questions about her visit below.

At the start of the COVID-19 pandemic, researchers from 15 departments at Leiden University Medical Center (LUMC) realised they could do more for patients if they joined forces. This is how the BEAT-COVID group has been able to rapidly gain knowledge about COVID-19, the role of the immune system and…

From 11 to 17 September, Leiden will be all about art and science. What can the combination of these two domains do for us? And how can cooperation between them be strengthened? Several public events and a brand new symposium for specialists should answer these questions.

At Leiden University, more and more exams are being done digitally instead of on paper. Originally, Leiden University would provide the large quantities of laptops needed for these exams. With rising demand for digital exams, however, the limits of this system were in sight. Now the Faculty of Archaeology…

Healthy and active Leideners and a smoke-free generation. These are the main ambitions of the Leiden Health and Wellbeing Agreement that was signed online by 40 partners on 19 April. Leiden University will also be drawing on its broad expertise to help realise the ambitions.

Psychology teacher of the year is Marc Molendijk. The Master Thesis Awards are for Kim Houwaart and Linda Bomm. Hans van Lennep wins the PhD Publication Prize; Nina Komrij wins the PhD Wild Card: Societal Impact. The Support & Management staff Prize is for the whole Psychology Institute Office and Remond…

Universitair docent Klinische Psychologie Laura Steenbergen ontvangt een donatie van Stichting Klei & Zand om onderzoek te doen naar de microbiota-darm-brein-as: hoe de werking van de darmflora samenhangt met emotioneel welzijn. Zo’n persoonlijke donatie biedt, in tegenstelling tot aangevraagde subsidies,…

Randal Sheppard recently joined the Institute for History as a lecturer in International Relations. He introduces himself.

The history of the LGTBI+ collective, deeply marked by episodes of violence, repression, and discrimination, is also the history of the struggle for social change and the conquest of civil rights, advances without which contemporary Western democracies could not be explained. More recently, the implementation…

Facility

For her bachelor’s thesis, Molecular Science and Technology student Madouc Bergers synthesized her own molecule that can inhibit the breakdown of sugars. Although most students do not even manage to make one building block, Madouc made three. Partly because of this, she has been nominated for the Science…

A world-famous light experiment from 1801 has now been carried out with sound for the first time. Research by physicists in Leiden has produced new insights that could be applied in 5G devices and the emerging field of quantum acoustics.

How can you increase the effectiveness of inspectors using responsible artificial intelligence (AI)? This is the question the Innovation Center for Artificial Intelligence (ICAI) Lab AI4Oversight is tackling. By developing algorithms and methods, they try to provide optimal support for, for example,…

With the start of the new academic year, the Social Resilience & Security programme proudly presents their yearbook. In the yearbook, you read about the programme’s interdisciplinary research building bridges between institutes, its educational activities such as the new Minor ‘Violence Studies’ and…

CWTS will get a new board of directors for the coming three years, starting on 1 January 2024. The Faculty of Social and Behavioural Sciences of Leiden University has appointed Ludo Waltman as scientific director and Tjitske Holtrop, Wolfgang Kaltenbrunner and Clara Calero Medina as deputy directors.…

The fact that scientists are increasingly better able to access molecular cell and tissue data also brings with it a new challenge: how can scientists find the information they need for research among the vast amount of data available?

Every year, an NWO PhD in the Humanities grant is awarded to a prospective PhD candidate at the Faculty of Archaeology. This year, the grant went to Maia Casna, enabling her to study respiratory disease in the past. ‘My hypothesis is that the rapid formation of cities in the medieval Netherlands, must…

Martijn Verkuilen is the winner of the Unilever Research Prize 2022. By transferring DNA from a plant into yeast, he made the first move to produce a new drug for type 2 diabetes. He collected his prize in Wageningen on 24 November.

Genetically modified organisms (GMOs) could be useful allies in the fight against critical environmental problems. Could because the use of GMOs is strictly regulated at the moment. A Leiden student team is now trying to make these GMOs safer with the aid of an ingenious lock.

Cookware handles, electrical plugs, brake pads. Unlike other plastics, these ‘thermosets’ cannot simply be melted down and reshaped, making them difficult to recycle. Chemist Roxanne Kieltyka and her team are now exploring a way to make these materials recyclable, potentially transforming the way we…

Teachers have to find a balance between routine and renewal of their teaching repertoire. Eveline de Boer (PhD student at ICLON) investigated how didactic building blocks can help them with this. Defence on June 15.

Fifteen hundred years ago, the north-west of what we now call China was a jumble of peoples. How did those Indians, Khotanese and Tocharians influence each other and each other's languages? Associate professor Michaël Peyrot has been awarded an ERC grant of almost two million euros to unravel this 'web…

During the kick-off meeting, master students taking part in the Thesis Workshop The Hague Southwest presented their thesis ideas to stakeholders from the neighbourhood.

‘Let’s get everyone home safely!’ This was the message of an estimated 750 demonstrators as they marched through the centre of Leiden on 18 November.

Neilabh Sinha was awarded a subsidy from NWO Promoties in de Geesteswetenschappen and started as a PhD candidate at the Institute for History in September. He introduces himself.

How do young zebra finches learn to sing? A research team led by researcher Katharina Riebel has developed a ‘RoboFinch’ to study just that. She and colleagues in the 'Seeing voices' research consortium have spent the past four years designing the robotic bird. And with success: young zebra finches…

Met haar spannende onderzoek naar strafrechtelijke waarheidsvinding in Europa sleept Linda Geven dit jaar de Gratama Wetenschapsprijs voor jonge talentvolle wetenschappers in de wacht.

During the ceremony of the Opening of the Academic Year, University Lecturer Arjan Louwen has won Leiden University's prestigious LUS Teaching Award. The prize, awarded annually by the Leiden University Student Platform (LUS), honours lecturers who excel in their teaching. For Louwen, the nomination…

It may seem as though adolescents do as they please, but they are more sensitive to their parents’ opinions than they would appear. The adolescent brain reacts strongly to parental criticism or praise. These are the results of a study by an interdisciplinary research group of psychologists and neuroscientists…

The prestigious Praemium Erasmianum Dissertation Prize is annually awarded to the five best dissertations published in the year before in the fields of Humanities, Social sciences and Law. During a festive ceremony in Utrecht Lennart Kruijer received the award from the hands of professor Bas ter Haar…

Research

How should the Quran be read? The manuscript of this holy book makes different interpretations possible. Researcher Marijn van Putten has been awarded an ERC Consolidator Grant of two million euros to explore centuries-old recitations.

As from April 2023 all students at Leiden University, Delft University of Technology and Erasmus University Rotterdam will start using the eduXchange portal to register for a minor.

New archaeological research into grave goods and skeletal material from the oldest grave field in the Netherlands shows that male-female roles 7,000 words ago were less traditional than was thought. The research was conducted by a multidisciplinary team of researchers led by Archol, the National Museum…

The Leiden municipality wants to make the city centre climate-proof and combat heat stress by greening it. But they want to do this in a way that does justice to the city’s heritage. Researcher Fenna IJtsma delves into historical greenery to offer inspiration.

Have you ever experienced the feeling of awkwardness when attending a party where you didn’t know anybody? Ever felt shy at a party within the first few minutes? While this feeling is labelled loosely as feeling socially anxious, social anxiety disorder goes to a much further extent.

The Leiden University Visual Ethnography collection has been added to Alexander Street Press, an educational streaming video service. The master’s specialization Visual Ethnography has supported many talented individuals to produce inspiring films. About 70 master’s thesis films of the past 8 years…

On Wednesday 27 September we will be holding a debate for students and staff on our links with the fossil fuel industry in relation to the topic of sustainability. All students and staff of the university are cordially invited. If you’re still not sure about whether to attend, these four questions and…

Gabrielle van den Berg became the Academic Director of LIAS on 1 September 2025: “I hope I’ll be able to make a real difference.”

Neuroscientist Anne Urai has been awarded a Veni subsidy to further develop her ideas over the coming four years on how the brain makes choices. Why did she receive the award? Urai answers five questions about her Veni grant for young researchers.

Children who lost their fathers in early modern England ran the risk of being sold to the highest bidder. Although Shakespeare wrote about it in his plays, the practice disappeared from collective memory for a long time. University lecturer Lotte Fikkers is bringing it back to light in a new Vidi research…

Despite increasing attention to inclusion, loneliness statistics are not improving for people with intellectual disabilities. University lecturer Paul van Trigt will use an ERC Consolidator Grant to conduct research into friendships between people with and without intellectual disabilities. What does…