How safe are the dozens of apps on our phone? And how do we make sure organisations don’t get hacked? Cybersecurity expert Olga Gadyatskaya works on all these kind of security issues. Next to that, she hopes to inspire young girls to consider a career in cybersecurity. ‘Too many young women think: I’m…

One and a half hectares of polder, a large volume of water, and a group of curious researchers from various universities and scientific backgrounds led by ecologist Maarten Schrama. These are the ingredients needed to answer the question: how do water retention areas affect nature, animals, and our…

Security seems to most people a basic necessity of life, a prerequisite for a good life. But if you think about it a little longer and deeper, as political philosopher Josette Daemen has done, you realise that security sometimes comes at the expense of other important goods, such as freedom and equality.…

Over 30 ambassadors strengthened their ties with researchers and university leaders in a recent visit to Leiden University. Cross-border collaboration (both literal and figurative) was the theme of presentations and a tour of the Hortus botanicus.

On Friday 29 August 2025, 370 students received their Bachelor's degree in International Studies. The diplomas were awarded in the historic setting of the Pieterskerk in Leiden. Family members, friends, and staff gathered to celebrate this joyous occasion with the graduates in a packed Pieterskerk.

Proton therapy is a new way of treating cancer in which radiation doses are delivered more precisely. This results in less damage to surrounding tissue and fewer side effects. Professor Marco van Vulpen is medical director of HollandPTC in Delft, where the social value of this therapy is studied. Van…

The bodies representing student and staff interests met at the start of the academic year for a day of training. New and familiar faces had come together to learn more about their role as council members and meet the Executive Board − and each other.

Information provided by the Tax and Customs Administration is something that concerns every citizen. So it is not surprising that the Tax hotline receives around 10 million calls each year. The Benefits Affair emphasised the citizen’s perspective in communications with the Tax and Customs Administration.…

The state, and specifically the idea of nationality, is almost all-determining in social life in the Netherlands. It determines how people identify, how we interact with each other, and what (in)equality in society looks like. However, ultimately, the idea that we can divide people into different nationalities…

Young researchers met this month for the fifth Science Communication Summer School. ‘This is the first time some participants get to meet other researchers who also enjoy science communication. It’s great to see’, says Julia Cramer, one of the coordinators.

It was not until 1878 that the first female students enrolled at Leiden University, but the discussion on whether women were suited to study was by no means over. 8 March is International Women's Day. BBC correspondente Kim Ghattas will deliver a lecture on 6 March on the struggle by Arabic women for…

‘Yamila Miguel brings along immense enthusiasm that sparks over to the students in the lectures,’ her students say about her. ‘She inspires us as scientists-to-be.’ The astronomer teaches master’s students with great passion and interactivity about exoplanets. She has been nominated for the faculty…

Video conferencing from your sitting room and algorithms on social media that know your interests: new technology is an increasingly integral part of our lives. At the same time there is a growing call to protect our privacy, and this is causing friction, at the University too. In part because of the…

Professor Beatrice de Graaf held the 53rd Huizinga Lecture on Thursday 12 December. In front of a a sold-out Stadsgehoorzaal, she spoke about how history can be used in times of crisis to give meaning to the situation.

Master’s students in the Honours Class ‘Leiden, City of Refugees?’ were asked to contemplate the concept of ‘the other’ from both an academic and an artistic perspective. The result was the exhibition ‘The Invitation’ which was presented at Stadsbauhaus on 4 June.

Jekaterina Savicka is funding advisor at Leiden Law School. She is part of the Department of Research, the department responsible for organisational and policy support for research at the faculty. How has she experienced working here since starting her position back in March 2024?

Yousef Yousef (39), a successful entrepreneur in the water-quality industry, recently joined the Advisory Board at Leiden Law School. Read the interview about his career.

Diversity and Inclusion (D&I) are core values that are a focus for us as a university. But what developments are there in D&I and how can we apply these to our university? To delve deeper into this subject, four Leiden University staff members travelled to Bologna for a week of discussions on D&I with…

The challenge: take three hundred students from vastly varying disciplines and teach them the basics of academic thinking in twelve lessons. Impossible? Professor Ben Arps and his team of tutors succeeded. It resulted in a large amount of positive student evaluations.

For the following years, Dr Aitor Burguet-Coca will be a returning face at the Faculty of Archaeology. He will join Dr Amanda Henry’s team with his expertise on prehistoric fire use and the methodologies that studying ancient hearths requires.

A wind turbine near your home? The energy transition is not seen as just by all parties concerned. It’s essential to involve local residents, argues Emma ter Mors, social psychologist. As a researcher, she focuses on identifying factors that influence public acceptance of energy technologies. Isn't…

Ijeoma Uchegbu is Professor of Pharmacy at University College London (UCL). As a female scientist of colour, she was initially reluctant to play an active role in the university’s diversity policy. Until, that is, she had a radical change of heart: ‘I knew it; I had to become an evangelist.'

In Indonesia, some Muslim preachers are TV stars with massive followings. Syahril Siddik studied how they operate and how their viewers react. On 9 November, he successfully defended his dissertation in Islamic Studies.

The year 2025 is a special milestone: we’ll celebrate our anniversary as a university community together with all the faculties. On 7 February, the Dies Natalis will mark Leiden University’s 450th birthday. Leiden Law School is one of the faculties also celebrating 450 years. So, at our faculty extra…

A new year, a new project, a new name: The Hague Program on International Cyber Security. Professor Global Security and Technology Dennis Broeders was awarded a grant of 2 million Euros by the Dutch Ministry of Foreign Affairs

This year, in a three-part symposium series, we are exploring how interdisciplinary collaboration can be promoted at the university. In the second session in March, the attendees discovered that understanding your rhythm and perspective is essential when embarking on an interdisciplinary project.

The Schengen countries officially abolished border controls, but checks actually still exist. Maartje van der Woude has written a book about these veiled border controls: ‘The danger is that Schengen will have lots of borders, just not visible ones.’

Nearly all documents from the 16th and 17th centuries were written by more than one person but attributed to only one author. Professor Nadine Akkerman wants to rectify this oversight in her research on scribes.

Plants can’t run away from enemies. Still, it would like to keep life-threatening herbivores at a distance. This can be done with odours. Klaas Vrieling of the Institute of Biology Leiden found out with his team how plants change odour production to keep the munchers at a distance.

The housing crisis is affecting a substantial group of Dutch citizens and is one of the main election themes this year. How did things get this far and what should the new cabinet do in the coming four years to address the problems? Three Leiden researchers give their answer.

Jasper Knoester is the dean of the Faculty of Science. How is he doing? 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.

How can we ensure that we act climate-proof and climate-neutral? We asked climate and earth scientist and lecturer at the Climate Change course Joeri Reinders.

Looking to share your academic results or insights with a global audience? Leiden University is a ‘contributing member’ of the international journalism platform The Conversation. In 2024, this resulted in 51 articles, which together were read by more than 667,000 people.

What are the origins of the Islamic Empire? And what was daily life like there? Two new Ted Ed animations answer these questions in simple language. Arabists Petra Sijpesteijn and Birte Kristiansen explain what the process of developing the videos was like.

Anti-litter activist Dirk Groot photographed, tagged, and collected more than 400,000 pieces of litter in the Netherlands. Now, he and his data are included in a study on urban litter by researchers from Leiden University and Andrea Ballatore from Birkbeck, University of London.

Do you remember your first day at work? How were you welcomed, and how did it make you feel? A smooth start is important—not just for you as a new employee, but also for the team you’re joining. So, how do you get onboarding right, and what does it involve? Karin van Daalen shares her insights.

Alexander van Oudenhoven is the brand-new education director of the master's in Governance of Sustainability. The study has already entered its fourth year and Van Oudenhoven is very enthused. What makes this a special programme and what are his plans?

As of 1 December 2024, Uta Wehn is professor by special appointment of the chair 'Citizen Science and Sustainability' within the Focal Area Engagement and Inclusion at the Centre for Science and Technology Studies (CWTS) at Leiden University. The new chair has been established jointly by CWTS and IHE…

With his clever measuring methods Ignas Snellen – together with his team – was the first to detect carbon monoxide in the atmosphere of exoplanets. For his pioneering work the Leiden astrophysicist has been awarded the Spinoza Prize, the highest academic honour in the Netherlands. The prize of 2.5 million…

During the guest lecture on 9 February, Jaap de Hoop Scheffer, Rob de Wijk and Frans Osinga discussed the situation in Ukraine and Taiwan. The crises in eastern Ukraine and the increasing tensions around Taiwan highlight the challenges the West faces in deterring aggression in the new era of key dynamics…

The Ministry of Justice and Security and Leiden Law School are planning to collaborate on a more structural basis. This is the outcome of a meeting that took place at the Academy Building in Leiden on 19 October. Those present at the meeting included the Minister for Legal Protection, Franc Weerwind,…

After hard work in the lab, Chemist Tirong Guo has developed a group of materials that provide a stable and efficient foundation for artificial photosynthesis. Will this enable the large-scale production of hydrogen and other useful compounds in the most sustainable way possible? Guo will defend her…

Purple clothing and a pride flag flying from all University buildings: Leiden University is once again taking part in Purple Friday. How do people experience this day? We asked some employees and students of the Faculty of Humanities.

It will be on the agenda of many a team meeting these coming weeks: how can we act on the results of the Personnel Monitor? We asked two managers how they have gone about this, what the results of their meetings have been and whether they have any tips for their colleagues.

In the summer of 2021, Lucy Opoka was awarded one of the coveted Meijers PhD positions. In October, she arrived back in Leiden, where she obtained her LLM degree Advanced Studies in International Children’s Rights in 2019. Professor Liefaard interviewed Lucy upon arrival.

In a five day workshop, the interdisciplinary Leiden Biodiversity Network, together with societal stakeholders, worked on a research agenda and drafted an action plan to improve human-biodiversity relationships. Researcher Kat Stewart co-organized the workshop and shares some results.

Rianne Bouwman recently started as policy officer for education.

Education

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?

How do you make sure you have engough money every month? Do you receive a basic grant, have a part-time job or do you borrow for your studies? Below, a student and a recent graduate tell us how they view their student debt.