The first full-colour images of the cosmos from ESA's space telescope Euclid were presented today. Never before has a telescope been able to take such crystal-clear astronomical images of such a large part of the sky and so far into the deep universe. The five images illustrate Euclid's full potential;…

A delegation from Leiden University visited the Netherlands Institute Morocco (NIMAR) in Rabat at the end of February.

De studentassessor: één student die als lid van het faculteitsbestuur aanschuift bij alle belangrijke overleggen en projecten. Zo wordt de student, een van de belangrijkste doelgroepen, vertegenwoordigd bij bestuurlijke besluitvorming. Assessor Julie Külsen draagt volgend collegejaar per 1 september…

After almost a year of working from home during this Covid pandemic, Scientific Director Paul Nieuwenburg conveys how the Institute of Political Science is sailing through waves and lockdowns: from transformation to bi location to 'non location', from teaching on the beach to teaching to 'black cubes'…

Erwin Muller, Dean of FGGA and Administrator of Campus The Hague, and Koen Caminada, Vice-Dean, share their thoughts on how ‘we’ as a faculty are doing based on three themes. A discussion about the balancing act between what is and what isn’t possible and the natural urge to continue to grow, the utility…

Eiko Fried, associate professor of clinical psychology, comments in Leisure Management on new research showing that consumer smartwatches cannot distinguish between stress and excitement. He stresses these devices are lifestyle gadgets, not medical instruments, and warns consumers against overestimating…

The rise of authoritarianism, the strengthening of the radical right, and the role of the EU in defending democracy—these are just a few of the issues causing concern today. Is the EU capable of defending democratic values within the Union and beyond its borders? In an interview from the Lithuanian…

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Welcome to Leiden University

Researchers at LUMC have made a breakthrough in understanding PALB2 mutations, an important cause of hereditary breast cancer.

Quit smoking, drink less, go to the gym more, attend all my classes … Nearly all students have made them again this year: New Year’s resolutions – a popular way to kick-start the new year. So it’s no surprise that all over the world people are promising to change or improve certain things this year.…

The Education Information Centre (OIC) plays a key role in organising the teaching and education provided at our faculty. But what does this department do, how can it help you and what are its plans over the coming period? We spoke to Stephanie Petitjean (OIC Administration Manager) and Marlijn Martens…

How much energy and greenhouse gas emissions can Dutch homes save? Xining Yang uses Leiden as an example and shows with his research how enormous the impact can be. At least, if we work harder on becoming more sustainable. Based on the models he developed, Yang will receive his doctorate on 28 June.

Researchers from the Leiden University Medical Center (LUMC) have successfully used stem cell gene therapy to treat a baby with the severe congenital immune disorder SCID. An important milestone: it is the first time stem cell gene therapy of Dutch origin has been administered to a patient, and also…

Jasper Knoester, decaan van de Faculteit Wiskunde & Natuurwetenschappen, blikt terug op 2025 in "het jaar van Jasper".

During his PhD research, mathematician Tyron Lardy worked on a new approach to hypothesis testing. Instead of the traditional p-value, he uses so-called e-values. These turn out to be more flexible – especially when you want to look at your results midway through the study.

Afghans who came to the Netherlands in a hurry, refugees who were used as leverage by Belarus and boat refugees who tried to reach Europe in an increasingly desperate manner: the newspapers were once again filled with news about migrants. Today, on International Migrants Day, we talk to professor Marlou…

Damien van Puyvelde has received funding (over 47.000 euro) from a new Research Council pilot for his study 'Open-source research and the war in Ukraine: intelligence for the people by the people?' We asked the researcher five questions about this project and the opportunities this creates for him.

Since 1 October, Sabina Chiță has been working as a coach for first-generation students in Physics. But who are first-generation students, and why might they need a coach? Six questions to Sabina Chiță.

As a mathematician, Fred Rohde (1948) explored the world of numbers. As a photographer, he captured demonstrations. And now he’s reconstructing his mother’s wartime story – an extraordinary tale of her stay with an Austrian family, the inventors of asbestos cement.

During the New Year’s reception of the Faculty of Social and Behavioural Sciences (FSW) on 12 January 2026, Sarah de Rijcke said farewell as our dean. She will become the new Rector Magnificus of Leiden University. It was not the only change of leadership announced that afternoon.

Working together in times of change. With enthusiasm, passion and connection as our keywords. That was the message emphasised by administrators Jasper Knoester and Luc Sels at the start of this new year for our Science faculty. ‘Hope for a better world means working together actively towards progres…

With ongoing protests across Iran, many are asking whether the regime is on the brink of collapse. Three Leiden experts share their perspectives.

Leiden Law School alumnus Dave Wesselink began his career as a lawyer in 2022. He’s also a professional bobsledder. ‘When you’re tearing round a bend at 130km/hour, you need to be able to stay calm and focused on what you’re doing.’

Tuesday 27 January - A crisp winter morning and a busy Tuesday. Board matters, research safety, leadership and faculty profiling alternate throughout the day, with a focus on collaboration both inside and outside the faculty. A full day that ends with a game of darts.

A paper during her master's degree put student Luca Andrea on the trail of Roman coins. While on an internship at the Teylers Museum, she organised the coin collection and came across some fascinating stories. 'Coins have had all kinds of functions.'

Timothy Metz studied Law and Tax Law in Leiden. Now he’s part of Andri AI, working on the application of artificial intelligence (AI) in the legal sector.

For thousands of years, the prehistoric communities of the Low Countries followed their own path, compared with the rest of Europe. An international research team has now published these findings in Nature.

In the Digital Humanities Lab, students and staff can make use of various technical facilities. PhD student Caeso tells us more about his experiences with the printer in the Maker Space.

Technology holds so much promise – from self-driving cars to enhanced physical performance from smart implants under the skin. But we should not let ourselves be caught off guard. That is the message of Bart Custers, Professor of Law and Data Science in his inaugural lecture on 21 May. ‘We don’t talk…

Many European citizens feel connected to the European Union and place trust in it, Eva Grosfeld found in her PhD research. Yet around a quarter do not identify with the EU at all. How can the EU regain their trust?

'An international environment is my natural habitat. I really thrive when I am in a setting where I am around people of all kinds of countries and cultures.'

As an international employee at Leiden University, it can be hard to settle into the workplace, the city, or generally, the Netherlands. The Leiden International Centre can help international employees land comfortably and make living abroad just a little bit easier. Jenny Willcock, coordinator at the…

According to Law student Jasmijn van Lochem, you can learn a lot in seven months. For the ‘Onderzoeksassistent’ (Research Assistant) course, part of the Honours College Law, she conducted research on the African Court on Human and Peoples’ Rights in collaboration with Misha Plagis, Assistant Professor…

The Houthis are attacking ships in the Red Sea. Rerouting via South Africa is expensive, whereas the Arctic route only takes a week. Once a no-go zone, this route might be a more realistic option. Mind the nuclear submarines, though…

The Surinamese-Dutch language, Parbo Beer and, of course, football. The ‘Dear Aunt Olga’ (‘Lieve tante Olga’) exhibition focuses on the shared Surinamese-Dutch culture. Full of cheer and with life experience to spare, ‘icon’ Aunt Olga (95) leads visitors through a shared history and does not shy away…

On Monday 26 August, students were warmly welcomed at the Wijnhaven location with a blue carpet and live music. Accompanied by their friends and family, they gathered to receive their BSc Security Studies diploma.

‘Be yourself. Be as gay, queer, trans as you can and show the world you exist.’ These rousing words from Looi van Kessel marked the start of the third Pride Leiden for the university boat, with the theme: ‘450 years of being yourself’.

On 1 September 2023, 280 students received their Bachelor Diploma of International Studies. The students were awarded their diplomas in the historic Pieterskerk in Leiden: the UNESCO world heritage site, where the university was originally founded in 1575. A large audience of about 700 people consisting…

Former President Kgalema Motlanthe of South Africa gave a public lecture on Campus The Hague on 7 July. His story was about the economic transformation of Africa.

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.

2021, again, sees a rich harvest of bachelor theses in Political Science. Students have been tackling fascinating subjects—ranging from European solidarity in the COVID-19 crisis to the representation of women in democratically elected parliaments—and crowning their research projects with interesting,…

With the new academic year, the Honours Academy welcomes a new assessor: Maarten Kolpa. What does an assessor do? And what can he do for honours students? Maarten talks about it in an interview. "I find it important that the student perspective comes first."

At the beginning of the corona pandemic, our Faculty appointed student mentors to guide first-year and international students. What drives these mentors, and what is it like to be back at the Faculty again? Mireia and Marten tell us all about it.

Campus The Hague gained a new facility. On Thursday 17 February, POPcorner was opened, helping students find their way during their studies and within the university buildings.

In August 2022 we welcome our new colleague Dr Letty ten Harkel as Assistant Professor in Roman and Post-Roman Archaeology. For the past ten years she has built up an impressive track record in the School of Archaeology at the University of Oxford. Read the interview about her background and research…

Maarten Jansen, professor emeritus at the Faculty of Archaeology, was appointed as Distinguished Emeritus Professor for two years at the University of Bonn. In this position, Jansen, a world-renowned specialist on ancient Mexican pictorial manuscripts, will further expand upon the long-standing collaboration…

In order to build wind turbines and electric cars, we need tons of magnets. Currently, we import these mainly from China, which means Europe is very dependent on this superpower for the energy transition. This has to change, according to industrial ecologist René Kleijn. In the REEsilience project,…