Infecting each other with viruses and bacteria while protecting yourself with medicines and vaccinations. Sounds like a fun evening, right? Master students Life Science & Technology Rafael Jezior and Dennis de Beeld certainly think so. Together, they developed ImmunoWars: an exciting card game based…

Protostars, data science, and the James Webb Space Telescope—Adriaan Janssen’s curiosity knows no bounds. As a double bachelor’s student in Physics and Astronomy, he has truly found his calling, underscored by his nomination for the title of Leiden Science Young Talent 2024.

An incredible quantity of archaeological reports are stored in digital archives. If you want to search for information in them, you have to do this manually. And that is a real chore. Archaeologist Alex Brandsen has now used deep learning, a form of artificial intelligence, to develop a search engine…

On 31 January 2024, Alex Schilin defended his dissertation ‘United in Distinctiveness: The Institutionalisation of Differentiated Integration in Economic and Monetary Union during the Sovereign Debt Crisis.’ What motivated him to research this specific topic, and how did he tackle this project? And…

Distracted eating is common and has adverse health consequences. Read more about the research of Leiden social psychologist Lotte van Dillen and some strategies to combat that behavior.

We have the pleasure of hosting organisational psychologist Fieke Harinck. Fieke is an expert on negotiation, communication skills and improvisation and co-author of the book ‘The Art of Presenting’. She shares invaluable insights and advice on how to deliver impactful presentations that captivate your…

Can a robot perform a religious ritual just like a monk? And what exactly is a religious ritual? Robots and religion seem to be two different subjects, but according to university lecturer Elpine de Boer, both can make us think about what it means to be human and what we consider to be of value. Together…

Bullying, abuse or a difficult divorce: many young people struggle with mental health problems after traumatic experiences. But why do some suffer much more than others? This is the question that Hannah Dorsman is exploring within the THRIVE project.

Leiden University is seeking bids from developers for housing in Nieuw Rhijngeest-Zuid, the Oegstgeest part of the Leiden Bio Science Park.

Our aim with the Humanities Campus is to create a sustainable and attractive campus with ample green spaces and opportunities for interaction, complemented by modern and future-proof facilities. The campus is being developed in stages. On this page, you can find information about the planning, latest…

Fraud and plagiarism in assessment can unfortunately be seen everywhere, even among our students. In relation to this, as an examiner you have an important role in safeguarding academic integrity.

On 16 May, three researchers from Leiden University will present their findings on the democratic consequences of decentralisation at a workshop in Leiden. Their research project, Downsize My Democracy?, shows that decentralisation does not automatically lead to a stronger democracy. On the contrary,…

Conference

Lecture, LUCL Colloquium

Juan Masullo J., Assistant Professor at Leiden University’s Institute of Political Science, has been named a 2025 Harry Frank Guggenheim Distinguished Scholar. His research with Nicholas Barnes on public security policy preferences in Rio de Janeiro's favelas has been recognized for its innovative approach…

PhD defence

PhD defence

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

Quantum technology, statistics and a survey with memes: definitely not your everyday research. Julia Cramer (Leiden Institute of Physics) and Sanne Willems (Institute of Psychology) investigate how people perceive quantum.

The norms, institutions and power relations that have defined the last decades of international political and economic relations in the European Union are undergoing major transformations. With the return of competition between great and ambitious powers, like the US, China, EU and Russia, the need…

Contrary to what one might expect, societal actors influence China’s foreign policy. PhD candidate Sabine Mokry investigated how Chinese academics and think tanks impact the authoritarian leadership’s views on what constitutes the country’s national interest in the international arena. On 14 November…

On Tuesday 30 September 2025, PhD candidate Jonathan Collins will defend his dissertation A Wolf in Sheep’s Clothing: A Mixed-Methods Analysis of the Far-Right Alt-Tech Social Media Movement in Leiden’s Academy Building. His work examines the communication dynamics of far-right communities on alternative…

Security seems to most people a basic necessity of life, a prerequisite for a good life. But if you think about it a little longer and deeper, as political philosopher Josette Daemen has done, you realise that security sometimes comes at the expense of other important goods, such as freedom and equality.…

As an exchange student, alumna Jessica Ma was already looking for a bridge between statistics and the real world. In Leiden, she gained the experience to follow her interests and, after a few detours, she landed her ideal job with Disney in the United States.

Ad IJzerman, Emeritus Professor of Pharmacochemistry, was made a Knight of the Order of the Lion of the Netherlands on 26 April. He was presented with the royal honour by Mayor Elbert Roest in the town hall in Bloemendaal.

Dr. Eduard Fosch-Villaronga from eLaw collaborates with researchers from the Indraprastha Institute of Information Technology Delhi (IIIT-Delhi) and University of Delhi (DU) in an effort to explore and reflect upon the potential legal, ethical and pedagogical challenges of deploying a social robot in…

Recently, Jaap van den Herik, professor emeritus Law and IT, was interviewed by the BNVKI (Benelux Association for Artificial Intelligence).

From practicing ultrasound techniques in augmented reality to chatting with virtual ancient Greeks about what an archaeological site looked like back in the day: video & innovation specialist Nathan Saucier gives an insight into the many possibilities of the interactive media and simulations studio…

For the first time, an international team of scientists led by Leiden Observatory and SRON can explain the extreme jet streams observed around the equators of all the giant planets using a single model.

The first results of the National Student Survey (Nationale Studenten Enquête: NSE) reveal that students at Leiden University are satisfied with their study programme.

From Roman ships to the ‘Gordon’ cavalry mask. Alumnus Tom Hazenberg was involved in spectacular finds that put the Dutch frontiers of the Roman Empire on the map. His mission is to give heritage back to the people.

Anyone who has taken a walk through the centre of Leiden before might have come across him, an attentive group of tourists gathered around. After studying history, Koen van Toen, or Koen Marijt, started his own business. He now organises historical walks, among other things.

The two instruments of ESA's space telescope Euclid have taken their first test images. The first images indicate that the space telescope will achieve the scientific goals for which it was designed - and possibly much more. Euclid will create a 3D map of a third of the sky, allowing scientists to study…

Thinking about the next step in your career, networking, preparing for the labour market or possibly meeting your future employer. Over 400 students and young alumni of the Faculties Governance and Global Affairs, Humanities, and Behavioural Sciences came together last week during the Campus The Hague…

What started with an old Soviet camera and a darkroom in London grew into a lifelong passion. Developmental biologist Michael Richardson has been capturing nature - from wild coastal plants to microscopic details in the lab - since his childhood.

On 11 November Professor of Gastroenterology and Hepatology, Monique van Leerdam will deliver her inaugural lecture entitled, ‘Aiming for Prevention’. Van Leerdam, who specialises in hereditary tumours, was appointed professor in July 2020. In her inaugural lecture she will discuss the importance of…

Taking a Bachelor’s in Security Studies while starting and running two businesses: student Mohamed Sulaiman never stops. But he wouldn’t have it any other way. PLNT The Hague entrepreneurs’ hub is a source of help and inspiration.

Recent studies have shown that Dutch secondary school pupils experience a great deal of stress from school work, and between 2001 and 2007 the number of adolescents experiencing school stress even doubled. The study carried out by Simone Vogelaar focuses on stress factors and the effectiveness of the…

Onderwijsparade onderwijsvernieuwing Kernvisie

Steeds drukker is het in populaire banen rond de aarde voor ruimtevaart. Niet alleen met satellieten, vooral met meer afval, wat onveilig is. Zhuang Tian promoveert op de juridische kant van afgedankte ruimte-apparaten. Wie troep veroorzaakt, moet het weer opruimen.

Alumnus Nick Hortensius started volunteering at the Leiden International Film Festival (LIFF) in his student days. He has since grown with the festival to become head of programming. How does he look back on his student days? And what can we expect from the festival this year?

Connecting worlds, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. In that respect, a huge amount happened at Leiden University in 2023.

Sarah Cramsey was appointed professor by special appointment of Central European Studies at the Institute of History on 14 September. 'I am keen to incorporate different scholarly approaches into my work and raise the profile of Central European Studies in Leiden.'

In May and June of 2021, Bachelor 1 and 2 students of the Faculty of Archaeology joined in the excavation at Oss. After the fieldwork itself, a second post-excavations week started in Leiden where each of them participated in small groups conducting archaeological find processing and working on creative…