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…

On Tuesday 6 May our university was the scene of an unscheduled demonstration and occupation at Campus The Hague. We understand that this incident and its consequences have shaken both the university and the wider community. We look back at the events and their effects.

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,…

Klare taal en betere regels rond geheimhouding. Dit zijn enkele aanbevelingen van Leidse onderzoekers om de toegang tot informatie te verbeteren voor burgers die procederen tegen de overheid. Bestuur en rechter moeten zo vroeg en zoveel mogelijk informatie delen.

Leiden researchers Arko Ghosh and Enea Ceolini analysed the usage data of hundreds of mobile phones and discovered that our body has rhythms ranging between 7 and 52 days. These cycles influence how we behave. Their research resulted in an article in npj Digital Medicine journal, a Nature Portfolio…

‘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.

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.

Starting in September 2026, Leiden University in The Hague will begin establishing a new Knowledge Centre for Kingdom Relations. In addition to bringing together researchers and developing education on Kingdom relations, the goal is to contribute to the public debate and foster greater mutual understanding…

What if we let students assess themselves, or awarded fewer grades? What if we held challenging discussions in public rather than in the classroom, or embraced AI? With ‘Free your mind’ as its theme, no idea was too outlandish at the Leiden Teachers’ Academy Education Conference.

Amidst great interest from locals and visitors, Emperor Naruhito and King Willem-Alexander paid a visit to Leiden University on 18 June. In the Hortus botanicus they talked with students and researchers. ‘This visit emphasises our shared ambition.’

Lecture, NGL-lezing

Lecture, Workshop and Egeria Lecture

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…

Lecture

Alumni event, Lustrum

Middle East Studies Lecture

Drop-in session

Drop-in session

Drop-in session

Festival

Last week, the sad news reached us that Dr Jan Schmidt passed away on 11 August 2025. We wish his partner, friends and family strength and comfort as they cope with this loss. Jan Schmidt will be remembered as one of the most prolific and learned scholars in the field of Ottoman codicology and histo…

Research

A cap on the number of international students at the five broad-based Randstad universities will have a drastic effect on the Dutch economy. The gross domestic product (GDP) is expected to decline by approximately 4 to 5 billion euros. Regions, businesses and society as a whole will feel the consequ…

Many traces of the city's slavery history can be found in Leiden but the public isn't always aware of them. The initiators of 'Mapping Slavery in Leiden' want to change this with guided tours and street markers. Representatives of the University and other Leiden institutions will be giving the first…

From closed government systems in the Middle East to an exceptionally open Dutch government. Public administration lecturer Alex Ingrams is an expert on transparency: ‘Why are some countries secretive? And what role does technology play?’

How can we view societal challenges from a different perspective? At the EuroScience Open Forum (ESOF), Robert Zwijnenberg, Emeritus Professor of Art and Science Interactions, will call for more collaboration between artists and scientists.

People who have negative expectations about a treatment actually experience more pain. Merve Karacaoglu discovered in her PhD research that anxious and pessimistic individuals are particularly susceptible to this nocebo effect. However, this sensitivity comes with a silver lining.

Terrorism is not a successful communication strategy. After an attack, the attention quickly shifts from the terrorists to authorities and citizens. This is what Jeanine de Roy van Zuijdewijn argues in her dissertation: 'The aftermath: meaning-making after terrorist attacks in Western Europe'. ‘A year…

Lewis Wade has been a Postdoctoral Researcher at the Institute for History since 1 September 2023. Below he introduces himself.

‘To be honest, I don’t really care about what type of research is going on. Just let me do my own thing and everything is fine,’ according to biotechnical officer Davy de Witt. In this interview, he tells about his tasks and experiences at the Institute of Biology Leiden, where he has been employed…

As of 1 November 2025, Professor Luc Sels will assume the role of President of Leiden University’s Executive Board.

The annual Korean Screen Culture Conference (KSCC) is dedicated to exploring all aspects of Korean screen culture, including television, K-pop, internet, computer gaming, webtoons, and film from both North and South Korea.

The book ‘Geleerde Zorgen: twee eeuwen academische geneeskunde in Leiden’ (‘Learned Care: two centuries of academic medicine in Leiden’) was presented on 16 December to Annetje Ottow (President of the Executive Board of Leiden University) and Pancras Hogendoorn, Dean and member of the Executive Board…

More severe droughts that will also last longer: this will primarily be a problem for irrigated croplands, as discovered by environmental scientist Qi Chen. Mixed forests with a variety of plant species will be the least vulnerable. Chen compared the effects of drought on different ecosystems across…

Ships are still emitting too much nitrogen oxide. Till now it has been impossible to measure this at sea, but that is set to change. Solomiia Kurchaba combined satellite data and developed algorithms to identify which ships are emitting too much. Kurchaba received her PhD on 11 June.

The nominees for the IRO Thesis Prize 2025 and the Prof. Dr. J.Th.J. van den Berg-prijs 2025. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

Maak kennis met digitale veiligheid in de podcast over de BSc Cybersecurity & Cybercrime. Experts bespreken actuele thema’s zoals ransomware en online fraude.

In addition to cholesterol and high blood pressure as risk factors for atherosclerosis, we may need to address our own immune system to prevent a heart attack or stroke. Marie Depuydt revealed which cells exactly reside in the atherosclerotic plaque that narrows an artery. The presence of a diverse…

Children in the Netherlands develop prejudices based on ethnicity at an early age. Ymke de Bruijn (27) came to this conclusion in her dissertation ‘Child Interethnic Prejudice in the Netherlands: Social Learning from Parents and Picture Books’. For her PhD project she took a closer look at the behaviours…

Writing essays, refining grant applications, or creating a new course curriculum—ChatGPT assists students and researchers in these endeavours. What this new technology means for working in academia, was discussion at the fourth Psychology Connected event.

UNESCO has recognized an international set of fifteen manuscripts about Ferdinand Magellan's first circumnavigation of the globe and the three Hikayat Aceh manuscripts as World Heritage. The manuscripts are inscribed in the global UNESCO Memory of the World Register. This list contains documentary heritage…

How do you make niche subjects interesting and accessible? Benjamin Suchard, historical linguist and researcher, seems to have created the perfect recipe, which consists of his various projects alongside his regular research, including a Twitter account and a major international film.

Turkish politics was shaken by the arrest of Istanbul mayor Ekrem İmamoğlu, along with dozens of others from the main opposition party.

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.

Her plan was to obtain a PhD, but, during her master’s, alumnus Sangbreeta Moitra discovered that her true interest lay in applying neuroscience in everyday life.

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…

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…