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…

Women confined to the kitchen? Not in Scheveningen around 1900. There, some women ran entire shipping companies. This is according to new research by history student Sjors Stuurman. He compiled the results in a book he wrote for Muzee Scheveningen.

As part of Leiden University’s aim to be a safe and healthy environment for all staff and students, several activities and lectures were organised in an action week around suicide prevention. Dedicated benches were also placed at several university buildings, including at the Faculty of Humanities.

Roman philosopher and orator Marcus Tullius Cicero is still used as an intellectual example by politicians and speech writers today. But, he did not go unchallenged in his own day, as a statesman in particular. Classicist Leanne Jansen conducted research into how classical historians judged Cicero’s…

More than 1.3 million people worldwide die of tuberculosis (TB) each year, making research on its prevention and control essential. Researchers from various disciplines in Leiden are studying TB. A symposium on 24 March will highlight different activities in the hope of boosting nationwide collabora…

After the lockdown, it was again possible to receive graduates and guests at the University. In recent weeks, BSc and MSc graduates from various study programmes were festively awarded their diplomas in a special corona-proof setting in the restaurant of the Gorlaeus Lecture Halls building. This resulted…

Eduard Fosch-Villaronga from Leiden University has been awarded a Starting Grant by the European Research Council (ERC). This grant of 1.5m euros enables talented early-career scholars to start their own pioneer project, lead a research team, and implement their best ideas at the frontiers of their…

Alessandra Silvestri has been appointed professor in Theoretical Physics in the area of Cosmology. For her this promotion in Leiden is the icing on the cake. ‘But there are many more boxes I would like to tick.’

What do you need to move your interdisciplinary collaboration forward? The Knowledge Orchard event will help. Assistant Professor Eduard Schmidt, who is giving a session on leadership, gives a sneak preview.

Leiden University and Stadslab Leiden invite you to improve the Leiden and The Hague environment with 450 extra trees – a living reminder of 450 years since the Relief of Leiden and the foundation of Leiden University.

Leiden is European City of Science in 2022 and this will be celebrated under the name Leiden2022. During Leiden2022, various activities will be organised, such as lectures, workshops, excursions and exhibitions. On the occasion of Leiden2022, Postbus 71 will be opened: the place to go if you have any…

A live online New Year’s event on Tuesday 12 January marked the start of the New Year. Dean Joanne van der Leun toasted 2021 and as usual at this event, the annual Meijers prizes and thesis prizes were awarded.

Pigeons, zebra finches and parakeets. Carel ten Cate studied bird sounds. But not just that. Together with linguists from Leiden, he investigated parallels between birdsong and language. On 9 June, his farewell symposium was held to mark the end of his broad career. Well, the end? Carel ten Cate has…

Neeltje Blankenstein receives an LUF grant to conduct research on online risk behaviour among young people. What risks do young people take online and why? 'With this research, we not only want to help prevent serious risk behaviour, but also understand what drives young people to it.'

As of 1 May 2025, Professor Kartica van der Zon has been appointed professor by special appointment of Family Law, Law of Persons and Juvenile Law at the Faculty of Law of the University of Groningen.

For ten months, PhD student Sanne Rotmeijer worked on the editorial boards of various news media on Curaçao and Sint Maarten. She also tracked how news goes around on the streets and circulates on social media. The aim? To find out how stories became 'the news'.

After one bachelor’s and two master's theses, Fenna IJtsma knew for sure: she wanted to do a PhD. Her thesis supervisor warned her about the high workload. In the 'Twijfeltraject' (PhD: to do or not to do) podcast, published by Mare, IJtsma explores with Mare editor Susan Wichgers whether a PhD track…

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.

Rich countries are getting richer because of environmentally polluting (construction) investments from the past, largely at the expense of poor countries. This was shown by long-term economic and environmental data. 'The gap between poor and rich countries is widening.' Scientists from the Leiden Institute…

Economic law, environmental law and human rights are important fields of law for sustainable development. But they do not interact sufficiently, which makes it difficult to implement sustainable development.

This year, Leiden University College (LUC) celebrates its 15th anniversary with the theme ‘Global challenges, local impact’. This theme highlights how LUC tackles global issues through education and research while making tangible contributions to Dutch society

The 50th Top 450 entry has now been published. In the run-up to the university’s 450th anniversary, we are compiling our Top 450. What is your favourite?

As part of Mariana Françozo’s BRASILAE project, a group of representatives of the Ka’apor people was invited to visit Leiden. The Ka’apor, an indigenous people from Brazil, are some of the present-day relatives of the Tupi-speaking peoples who used to live in the northeastern region of Brazil, claimed…

Finds uncovered in the east of Germany show that Neanderthals stored and preserved vast amounts of meat and/or temporarily aggregated in larger groups to exploit the spoils

To mark the university’s 450th anniversary, the Leiden Discoveries science route has been updated and was relaunched on the Night of Discoveries. New signs in town and a revamped website tell Leiden residents and visitors the stories of the city’s spectacular discoveries.

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

How can mentors and social workers foster the vocational identity of at-risk youth and improve their prospects? This is the subject of Rineke Keijzer-Groot's thesis. She is a dual PhD candidate at ICLON and Dual PhD Centre. Defence on 18 November.

Leiden University’s Institute for Security and Global Affairs and Dual PhD Centre jointly organize an online lecture on 23 April, 15.00 hrs by Cleveringa Professor General Roméo Dallaire on “How a better world is possible”: Cooperation between Science and Practice.

Het Leids Universiteits Fonds (LUF) heeft recentelijk twee subsidies toegekend voor rechtshistorisch onderzoek. Deze financiering ondersteunt projecten over de bescherming van graftekens en de beperking van maritieme aansprakelijkheid, uitgevoerd door promovendi Eva Drommel en Tim Lubbers.

Soil ecologist Emilia Hannula has been awarded a Vidi grant by NWO to examine how soil could become a promising ally in combating climate change and improving biodiversity. ‘Soil creatures might be invisible’, she says, ‘but they play a huge role in creating a healthy environment.’

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

The first year students of Bachelor Security Studies finished their final block with the course Integrated Project 1. As part of the programme's teaching philosophy ‘Explore, Understand, Do’, students were required to combine the knowledge and understanding they’d gathered throughout their first year,…

From monitoring pollution to tracking rainfall, citizen science comes in different shapes and sizes. But at its heart, it’s about the relationships between citizens, policymakers and researchers.

The Erasmus+ Blended Intensive Programme (BIP) is a short and intensive mobility programme funded by the European Union, that combines online learning with a short trip for in-person teaching.

People who move most in the afternoon and evening are less insulin resistant than people who move mainly in the morning or spread throughout the day. This makes them at lower risk of type 2 diabetes. These are the results that researchers from the Leiden University Medical Center (LUMC) have published…

Henrike Vellinga recently joined the Institute for History as a PhD candidate, as part of Carolien Stolte's VIDI project 'Peace Palms. International Coalitions for Peace in the Era of Decolonization, 1918-1970'. The project runs alongside Carolien Stolte's ERC project 'Reconciling Peace: International…

An impressive 875 students from all corners of the globe are taking part in Orientation Week Leiden (OWL). After all the lockdowns in their own countries, they’re glad to meet up in real life in Leiden. What do they expect of their studies here?

On 15 April, our much-beloved and highly respected former colleague Dr Hans Brussee passed away from cancer. In January 2025, Hans began experiencing neck pain. Initially, it appeared to be a herniated disc, but sadly, the diagnosis was soon revised, and his condition proved untreatable. Hans was 77…

The International symposium on artistic research methods organized by ACPA and the Platform for Arts Research in Collaboration (PARC), in coordination with Fontys Tilburg and SAR– took place on 9th April, 2024 at the Textile Museum in Tilburg. The recordings are now online at whatmethodsdo.com.

Over two days in the middle of April the Leiden University Centre for the Arts in Society hosted the virtual Bodies Matter conference. Almost two years in the making, the conference was an exciting and timely opportunity to discuss and debate histories, theories and practices of bodies.

Nikki Ikani (ISGA) and Bernardo Ribeiro de Almeida (LUC) have received Veni-funding. A total of 188 scientists received grants in this round. Veni grants are awarded annually by NWO.

The free AI and Ethics course (in Dutch) is available online to anyone who wants to find out more about the ethical implications of artificial intelligence. One of the eight experts featured in the course is Professor Reijer Passchier. ‘Artificial Intelligence is spreading so fast and has such an impact…

From January 2026, Leiden University will have an additional location in The Hague: Spui Campus. As well as teaching, study and sport facilities, it will offer 90 workspaces and meeting rooms for Leiden University staff.

Do you often find yourself exhausted in the lecture hall or at your workplace? Not great for your mental well-being, as Laura Pape knows. She is investigating how an online self-help program can assist in addressing sleep issues and preventing mental health problems. Join her on this elevator pitch…

On 26 November 1940 Professor Cleveringa held his courageous speech protesting against the dismissal of his Jewish colleague, Professor Meijers. Cleveringa was arrested and the university was closed. Every year the university honours Cleveringa with a chair and meetings throughout the world.

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…

Eduard Fosch-Villaronga from eLaw - Center for Law and Digital Technologies, and Hadassah Drukarch, explored the role of intersectionality within (rehabilitation) robot design, testbed, and standards. Being oblivious to these considerations may give way to the development of robots that fall short of…

Early treatment benefits patients who have not fully developed rheumatoid arthritis but are in the preliminary stages of the disease. This is what researchers from the Leiden University Medical Centre (LUMC) have reported in The Lancet. Patients in the pre-arthritis stage who were temporarily prescribed…

Hoe kan het dat universele mensenrechten wereldwijd niet hetzelfde in de praktijk worden gebracht?

On January 1st Jasper Knoester started as our new dean. How is he finding it? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.