Would you like to take a walk with a fellow student who you don’t know? That is the idea behind Walk & Talk. With this new initiative, International Studies aims to provide more opportunities for social contact.

Working for a social client during your studies: this is what happens at Urban Studies. For the course Urban Studies in Practice, third-year students carry out projects for public clients, such as the municipality of The Hague.

In his inaugural lecture Dennis Claessen will explain how he wants to ensure that lecturers have less admin to do.

Nearly 19,000 runners lined up at the start of Leiden Marathon on Sunday, among them students and staff from the university. For some this was their first race, for others a highlight of their year. This year, in celebration of our 450th anniversary, they ran in a special jubilee t-shirt.

After a gap of five years, Leiden has a new Professor of Modern China. Florian Schneider started his position on 1 September.

Education

Since the invasion of Ukraine in 2022, Russia has been conducting a covert sabotage campaign against Europe. The ‘Bewaken en Beveiligen’ (Surveillance and Security) project team at Leiden University has investigated the scale of these operations and compiled its findings in the report Russian Operations…

Micro- and nanoplastics cause stress to crops such as lettuce and carrots, PhD candidate Laura Julia Zantis found. This can lead to reduced growth and a lower nutritional value. Biodegradable plastics have this effect too, likely because of chemicals they release during degradation.

Since September, Jelle Oonk has been the chair of the Science Faculty Council. Jelle is a third-year student, combining Physics and Astronomy studies with this responsible role. Time to get to know him better. Five questions for the new chair.

Alumna Tiziana Lippiello became the first female rector magnificus of Ca’ Foscari University of Venice last year. In this way, she hopes to contribute to emancipation in the academic world: 'We need more women here.'

Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

Each year, the Jaap Doek Children’s Rights Thesis Award is presented to the student who has written the best master’s thesis in the Netherlands or Belgium in the field of children’s rights. The award was established by Defence for Children and Leiden University's Department of Child Law.

A consortium, led by Erik de Maaker (CADS, Leiden), has under the NWA scheme (Dutch National Science agenda) been awarded 98k€ for Localizing Global Garment Biographies, a two-year project to research the different ways by which users and producers attach value to garments.

Just start somewhere: whether it's videos, board games, theatre performances, or festivals. That was one of the key insights Sophie Wintermans gained during the Science Communication Summer School. In her view, the Summer School is a great step for any scientist interested in science communication.

How do you go about the sustainable restoration of a nineteenth-century ship without affecting its historical worth? Leiden University students from the master’s programme in Industrial Ecology spent six months working on this question. We spoke to Hidde Boom (25) and Tycho Jongenelen (25), two of the…

Every week, Uwe Hensch walks past the Old Observatory in Leiden. In corona times, he decided to make a LEGO design of the historic building. His design is now finished and might go into production. You can help to make it happen.

A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…

The energy transition is already a huge challenge for society, but sustainable use of resources is even more complicated. Yet it is at least as urgent. Ester van der Voet has been working on it for decades, for example within the United Nations. Since February, she is a professor at the Centre for Environmental…

Cryogenic memories, antibiotic treatment for urinary tract infections and recycling plastic sustainably. These are the subjects of the three NWO-XS grants awarded to Leiden Science researchers.

As of 1 September, archaeologist Amanda Henry has been appointed Full Professor at the Faculty of Archaeology, where she will hold the chair in Evolution in Hominin Diets. The appointment marks a new chapter in her academic journey, building on her longstanding research into ancient human diets and…

University lecturer in Management & Organisation Sarita Koendjbiharie is a welcome lecturer on The Hague campus, and not only because she takes a genuine interest in her students. In fact, Koendjbiharie brings her dog Coco to campus whenever she can.

X-ray and CT scanners are widely used devices in research, diagnostics and the industrial sector. And yet they are not nearly as fast and accurate as we would like. Mathé Zeegers is researching the newest technique in the field at the Centre for Mathematics and Computer Science: spectral X-ray imaging.…

The Sustainability Monitor 2023 shows that Leiden University is taking its sustainability efforts seriously.

Nienke van der Marel has been awarded the New Horizons Prize in physics for her pioneering research on planet formation. This prize is given to young, promising researchers in physics or mathematics. The astronomer and her colleagues found the first observational evidence for 'dust traps' in disks around…

Green spaces boost mental health—especially in busy cities. A new study from Leiden and Stanford University reveals how nature benefits urban well-being and offers low-cost ways to make city life healthier for everyone.

It is with deep sadness that we share the passing of Lucas Ressang, a valued member of our Asian Studies community. Lucas was a dedicated and thoughtful student whose intellectual curiosity and passion for learning left a lasting impact on those who had the privilege of working with him.

LUC students research the Geul river’s restoration, combining sediment studies, biodiversity assessments, and policy insights for global environmental challenges

Before researchers can develop targeted drugs, they need to know exactly how a disease works. Biochemist Bert Beerkens created molecules that allow them to find out. He used caffeine as the basis for new molecules that enable research into certain receptor proteins on cells.

PhD candidate Karen van den Akker has written a children’s book to get young girls excited about technology. The picture book ‘Met mama naar Mars’ tells the story of Luna, who wants to travel to Mars.

Not all gay and lesbian students feel equally safe at their sports clubs. ‘Homo’ is used almost unthinkingly as a term of abuse and players often face homophobic comments. What can sports clubs and teams do to make sure everyone feels safe when playing sports?

Political scientist Kevin Köhler (Leiden University) has been awarded a Consolidator Grant by the European Research Council (ERC). This prestigious grant enables him to set up a research group in the coming five years. Köhler and his team will examine how elite conflict affects processes of regime change…

During his bachelor's programme in International Studies, Tom de Groot became fascinated by the theme of peace and security. Now he designs and moderates training courses to help professionals develop further in this field.

Astronomers led by Simon Portegies Zwart used simulations to reconstruct how three stars were ejected from the star cluster R136, 60,000 years ago. The analysis reveals that five stars were involved in the event in the Tarantula Nebula.

The new University Sports and Exam Centre is another step closer. Bigger sports and exam halls, plenty of room for meeting people, an open feel that integrates with the Campus Square and the sports fields, optimal acoustics and an uncompromisingly sustainable building with a green facade and solar panels.…

Yesterday marked the start of the National Accessibility Week. How accessible is Leiden University for people with a disability? We asked Lucia Langerak, disabled herself and working at the Honours Academy, about her experiences: ‘Significant improvements are being made.’

11th CREAN Children’s Rights Research PhD Symposium

On 20 March, the final of the Legal Tech Challenge 2025 took place at Leiden University. After weeks of collaboration, brainstorming sessions and workshops on legal accessibility, five student teams presented their innovative legal apps to a jury.

Roll-up solar panels, bendable phone displays, or better computer chips… The EU project STIBNITE investigated the next generation of semiconductors, made from organic materials based on carbon, nitrogen, and boron. The project has now concluded. During the Open Science Debate on 1 July, the group will…

The European Research Council (ERC) has awarded an Advanced Grant to six Leiden researchers. It awards these significant grants to established principal investigators for ground-breaking, high-risk research.

Leiden University is publishing a list giving an overview of its research collaborations with the fossil fuel industry.

Cornald Maas was able to ‘pioneer’ in Leiden. This Dutch Studies graduate, presenter, programme maker and publicist combined an active student life with studying hard.

Professor Jan Melissen (ISGA) is the recipient of the 2022 ISA Distinguished Scholar Award in Diplomacy Studies. It is the first time this prize has been awarded to someone in Europe. Melissen: ‘I am very honoured and humbled to be the first person to receive this award outside North America.’

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…

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.’

Education, Research

The end of the semester is approaching again. That means a lot of deadlines and the end of a lot of subjects. Have you prepared well for this period?

An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…

Wat zie jij als je verderkijkt? Hoe ziet studeren aan de Universiteit Leiden in 2075 eruit? We nodigen je uit om mee te doen met Verderkijkers.

On Saturday 25 June, the Europa Institute of Leiden University hosted the 61st Leiden-London Meeting, an annual event organized jointly by the Europa Institute and the British Institute of International and Comparative Law (BIICL). This year’s meeting had “Interdependence, cooperation and strategic…

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…