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…

Zār jewellery from Egypt can be found in many museums and private collections in the West, but for a long time very little was known about it, except that it was used in rituals to protect against spirit possession. PhD candidate Sigrid van Roode has explored its history and discovered that the jewellery…

The image of the European Union (EU) as a remote law-making machine is widespread. Quite often journalists and politicians deliberately depict ‘Brussels’ as bureaucratic, even undemocratic, bypassing its citizens. And many of us buy into that image. Nikoleta Yordanova, Anastasia Ershova and Aleksandra…

Joeri Reinders, universitair docent bij het LUC, ontving een NWO-subsidie voor het project 'Het KlimaatCasino'.

Relations within the Kingdom of the Netherlands are imbalanced, says Professor by Special Appointment Wouter Veenendaal. The Caribbean autonomous countries and special municipalities do not have enough of a say and have administrative problems to contend with.

Data about COVID-19 were everywhere during the pandemic, but how will all this data continue to be managed and kept open so that it is usable in the future? We spoke with Kathleen Gregory, researcher at the Centre for Science and Technology Studies (CWTS), who will study this question in a new project…

Just imagine new AI technology is able to read human emotions flawlessly. How would that affect us as humans? That is the question PhD candidate Alexandra Prégent is exploring.

Leiden students often prefer complicated theory and a difficult test to experiments. Yet associate professor Paul Logman believes students learn a lot from practical teaching. He challenges his students to come up with their research questions themselves. The Leiden Institute of Physics (LION) is at…

Hanne Cuyckens, Michiel Dam, Anja van der Voort, Daan Weggemans and Paul Gobée have joined the Leiden University Teachers’ Academy. Lecturers from the academy can exchange experiences, develop themselves and share their knowledge and expertise with the rest of the university, for example through the…

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…

The child benefits scandal caused significant harm to families. The independent Hamer Commission specifically investigated the link between the scandal and the removal of children from their homes. Public Administration student Benito Walker was a member of this commission and shares his experiences…

Bob de Brabandere discovered his deep passion for cinema through a minor in Film and Theatre Studies. He currently serves as Assistant Manager at Bioscopen Leiden and as a programmer for the Leiden International Film Festival, which commences on 9 October.

Extremely painful chronic cluster headaches – sometimes referred to as ‘suicide headaches’ – can be prevented by stimulating the occipital nerve in the back of the head, according to research conducted by Professor Emeritus of Neurology Michel Ferrari from Leiden University Medical Center (LUMC). The…

Americans are electing a new president in November but they also have other choices to make in the polling booth. Alumnus Sanne Rijkhoff works at a Texas university and is trying to help make students more aware of the elections.

Willem van der Muur worked at the Van Vollenhoven Institute as a PhD candidate from 2013 to 2019. After completing his doctorate he left for Indonesia to work for the World Bank. There, he is leading a project to register land rights.

A restless night aggravates symptoms in those experiencing suicidal thoughts, as psychologists Liia Kivelä and Niki Antypa have found in their study on the short-term risk factors of suicide. They argue that targeting sleep could thus be essential for suicide prevention.

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…

The nominees for the IRO Thesis Prize 2024 and the Prof. Dr. J.Th.J. van den Berg-prijs 2024. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

For the third year in a row, the bonfires in the Duindorp and Scheveningen neighbourhoods in The Hague during New Year's Eve have been cancelled. According to Professor Henk te Velde, the fight for the bonfires represents something bigger: angry citizens.

Research

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.

Violence such as assault or head-butting causes pain, shock and distress. It is often seen as savage or senseless. But for those who commit it, violence has meaning, argues violence researcher Don Weenink in his inaugural lecture.

Lecture

Lecture, Tuesday Talks: Science Insights

PhD defence

On 11 March, pharmaceutical company Janssen received approval to launch its corona vaccine on the European market. This made Janssen the fourth company to be given the green light by the European Medicines Agency. As Lead of the Janssen Campus in the Netherlands, Biology alumnus Bart van Zijll Langhout…

Lecture, Tuesday Talks: Science Insights

Lecture, SMILE Talks

As one prepares for the final sprint, the other stands ready at the starting blocks: in just a few weeks, Dean Mark Rutgers will pass the baton to his successor, Henk te Velde. In the meantime, both are working hard to ensure a smooth transition to a new faculty leadership. Henk is already regularly…

To read Chekhov in the ‘original’. That was what motivated Arie van der Ent to study Slavic languages and literature with Karel van het Reve at Leiden University. ‘My love for Chekhov hasn’t faded,’ says Van der Ent from his home 60 kilometres south of Kyiv. ‘But it has for the rest of Russia.’

Over 200 staff from Leiden University discussed student well-being with one another and students at the Staff Symposium on Student Well-being. In various workshops and lectures, lecturers, student advisers, student counsellors and other staff members discussed how they could contribute to our students’…

Floreat et crescat. Flourish and grow. That was what was wished for the Mathematical Institute at its opening. Now, the institute proudly celebrates its 70th anniversary. Time to reflect on how it all began. And importantly, how is it doing now?

World Heritage status comes at a cost to the local population’s human rights. PhD Candidate Sophie Starrenburg explains the drawbacks of poetic terms such as ‘the cultural heritage of mankind’.

Members of the End Fossil climate action group, including students from Leiden University, have occupied two rooms in the Lipsius building at the Faculty of Humanities today (23 November 2023).

Without academic freedom, we might not have antibiotics, nor a deep understanding of human behaviour. Literary criticism, climate models, and ecological restoration would be severely limited; just like ethical reflection on artificial intelligence, justice, trauma, parenting, faith and hope. All these…

Prisoners deserve better professional support when preparing to return to society. PhD candidate Amanda Pasma: ‘You can’t imprison everyone for life. Society will have to give prisoners a second chance.’

Frans de Haas started his work at the MI with a clear mandate. Listening and talking are what he will mainly be doing ‘My role is to make sure that everyone feels comfortable in the new situation.’

International collaboration is essential to research and teaching but it also brings risks. Such as sharing sensitive knowledge and technology or foreign interference in research. Rector Hester Bijl explains what staff can do to prevent this.

The orbits of 27 stars orbiting closely around the black hole at the center of our Milky Way are very chaotic. As a result, researchers cannot predict with confidence where they will be in about 462 years. ‘That is astonishingly short,’ says astronomer Simon Portegies Zwart who collaborated on the r…

Changes to halt further biodiversity loss are more urgent than ever and feasible, says IPBES, the United Nations biodiversity panel. In two reports released this week, the panel calls on governments worldwide to develop coherent policies that address biodiversity, climate change, water, food and health.…

PhD defence

Leiden University researchers will be working more closely with colleagues at Una Europa partner universities this year. Three research projects have been awarded up to €40,000 in Una Europa seed funding to explore questions related to democracy and AI, web tracking technologies and clean energy.

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.

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…

What are the often invisible cognitive consequences of multiple sclerosis? Maureen van Dam mapped these out during her doctoral research. 'People usually notice the physical symptoms, but the cognitive symptoms deserve at least as much attention.'

Patients with skin diseases such as eczema and psoriasis, sometimes spend a lifetime searching for the right medication. To help these patients faster and better, scientists across the country are joining forces. The Next Generation ImmunoDermatology (NGID) project, with LACDR professor Robert Rissmann…

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.

Autism, Alzheimer’s, and bipolar disorder: can the development of these mental health conditions be influenced by the ketogenic diet? Increasingly, research suggests it might. 'For those it helps, it can be life-changing,' says neuroscientist Eline Dekeyster.

The sustainable production of hydrogen could potentially be made more efficient by adding a cleverly chosen salt to the process. Researchers at the Leiden Institute of Chemistry (LIC), in collaboration with physicists at the University of Twente, have discovered that the type of salt present in the…