Researchers at the Faculty of Science work at the frontiers of knowledge every day, tackling today’s major societal challenges. Their work is recognised through grants, prizes and other awards. We highlight some of these achievements.

Didactics

...What does seem clear, though, is that there is a great deal of room for improvement in the process of out-of-home placement. The FSW's social and behavioural scientists give their views.

From energy transition to the nitrogen crisis: artificial intelligence can be of great help. Researchers from the three universities in Zuid-Holland are seizing the opportunity. Three of them talk about collaborative research in the AI for Energy and Sustainability focus group within the Zuid-Holland…

Twenty-five passionate lecturers earned their Senior Teaching Qualification (SKO) on Monday 12 January. Five of these lecturers talk about how the SKO has benefitted them and what they think ‘good teaching’ is.

It is more myth than reality that people with migration backgrounds commit more crime. Leiden has successfully tackled anti-social behaviour by Moroccan youths, says former mayor Henri Lenferink. Good education forms the basis of a healthy and safe society, says ‘crimmigration’ researcher' Maartje van…

Elise Dusseldorp has been appointed Professor in the Methodology and Statistics of Psychological Research. In the same way that she spends her spare time rambling through the forest, as a professor she sifts through colleagues’ research data. ‘I often come across information that doesn’t appear in the…

Despite an eventful afternoon – with Students for Palestine occupying the Academy Building – political scientist Hélène Landemore gave her Cleveringa Lecture as planned on 26 November. She reflected on the protest and the importance of open debate, within the university and within a democracy.

Marjolein van Reisen has been Institute Manager Finance for a year, and Wiesje Zikkenheiner has been Institute Manager HR for two months. This duo job is by no means a luxury in an ever-growing organisation. Marjolein: 'We’re both new to this world, so we have our hands full.'

The student debate in Leiden’s Stadsgehoorzaal promised to be ‘the key to your vote’. That may sound hyperbolic, but what this well-attended debate did achieve was increased trust in politics. ‘They even let each other finish their sentences’, the flabbergasted students concluded at the end.

In the Pioneers of Leiden University series, we talk to past and present students who were the first in their family to go to university. In this second instalment: historian and university lecturer Nadia Bouras (1981). ‘Although I only found out later that was my mother’s dream, it was as though I…

As Board Secretary, Corry Donner aims to be a ‘spider in the web’; someone who keeps a watchful eye on and brings together all the different perspectives of the institute’s board. Now she's left her carefully woven web at the university and transfer her tasks to her successor. Last September, we talked…

The new academic year is on its way and for most students it takes some getting used to being present at the KOG every day. What about international students? We spoke with three internationals who have been studying at Leiden Law School since this academic year.

Siemens recently took over the Leiden software company Culgi, founded by professor and inventor J.G.E.M. (Hans) Fraaije. We spoke to him about the algorithm that made him successful, the role of a university in our society and his ambitions at Siemens. ‘I was looking for Siemens, and they were looking…

The Faculty’s traditional New Year’s reception, like everything else these days, was transformed into an online event this year. Dean Paul Wouters as the host led us through the programme filled with the Casimir Teaching Award, the Pieter de la Court Medals, the Master’s Thesis Prizes, and a short lecture…

The University wants to improve its support for contract and external PhD candidates. A taskforce headed by Dean of FGGA Erwin Muller has made over fifty recommendations, varying from an improved PhD portal and flexible work places on the campus to the right to vote in employee participation bodies.…

Didactics, Career development

Fraud and plagiarism in assessment can unfortunately be seen everywhere, even among our students. In relation to this, as an examiner you have an important role in safeguarding academic integrity.

The PhD track involves many different aspects. As well as important administrative steps that you have to take, for example, there are also introductory activities, a training programme and opportunities for research abroad.

Learn how to use Maileon’s editor and how to follow the editorial guidelines.

Study information, Webinar

Study information, Webinar

Study information, Webinar

Study information, Webinar

Study information, Webinar

Staff Association

Lecture

Lecture

Lecture, Austrian Studies Fund Lunch Talk

In her teaching, University Lecturer of Ancient History Liesbeth Claes uses various digital tools. Using that experience and interest she started an innovation project in order to research which digital skills history alumni need on the labour market and how these skills can be implemented in the cu…

With its FestivOWL theme, Orientation Week Leiden (OWL) promises to be one big festival for new international students in Leiden.

Alumna Janine Ubink is a Professor of Law, Governance and Development at Leiden University. She researches legal pluralism in various areas of Africa and calls herself a ‘tropical lawyer’. She says, ‘It doesn't really exist, but I am one.’

With a recently published major research project and an exhibition at the Rijksmuseum, the struggle for independence in Indonesia has been thrusted back into the spotlight. Leiden University is devoting attention to this topic as well. History students Sander van der Horst and Melle van Maanen joined…

Does medicine make patients feel better or worse? We are getting better at predicting this from people’s DNA profiles, says Professor Jesse Swen. ‘It never fails to fascinate me how one DNA base pair can have such a huge effect on treatment with medication and the outcome.’

The University Council gives the Executive Board (un)solicited advice and helps decide on important topics. For example, permanent contracts for lecturers and the workload and well-being of our students and staff. It’s an important organ, but many staff have no idea what it does. ‘I think it’s great…

Climate change, social inequality, and the COVID-19 crisis are examples of wicked problems—issues that require collaboration across different disciplines. In partnership with the African Studies Centre, David Ehrhardt and Caroline Archambault (LUC), along with African partners, are researching the best…

On April 14, 2025, Dr. Hans Petschar, the recently-retired Director of the Bildarchiv und Grafiksammlung at the Austrian National Library in Vienna, delivered the Sixth Annual Austrian Studies Lecture 'Austria’s Present Past: A visual journey through Austrian history 1925 – 2025'.

Getting to know all his colleagues as fast as possible, and learning about the faculty’s strengths: these will be Jasper Knoester’s first challenges. Jasper became the new Dean of the Faculty of Science on 1 January, and he is optimistic about the corona restrictions. ‘Obviously, this isn’t the start…

Anthropology students investigate how care is perceived in LGBTQ+ communities in the Netherlands, winning the prestigious Speckmann Prize. Insights on safe spaces and community diversity.

Connecting scientific fields, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. What did the university achieve in 2024? A small sample.

Olivier Morskate studied Public Administration at Leiden University and did an internship at the European Parliament's Liaison Office.

Jan Joosten studied civil and tax law in Leiden from 1985. After exchanges and an internship, he became infatuated with the United States. He is now a partner and co-founder of a new law firm in New York: Pierson Ferdinand.

There’s a lot that goes wrong in the treatment of patients with PTSD caused by childhood trauma. Endowed professor Maartje Schoorl wants to resolve this by bringing scientific research closer to the practice. Inaugural lecture on Friday 29 April.

On Saturday 16 April, secondary school pupils will once again have a chance to sink their teeth into the hardest language-related questions during the final of the Linguistics Olympiad. Professor Sasha Lubotsky and PhD student Cid Swanenvleugel are both former Olympiad winners. Now they are involved…

Eight Leiden University research teams recently received €15,000 each to take their research to the next level through Una Europa. Dario Fazzi, one of the selected researchers and professor of Transatlantic Environmental History, shares how Una Europa helps him expand a Leiden-based project into a international…

Research

Covid-19 has had a huge impact on teaching at universities over the past two years. Through force of circumstances, lecturers have adapted much faster to a digital future. On 7 June Leiden Teachers Academy’s annual Education Festival (working language is English) will present insights on this ‘new n…

During the first weekend of October, a group of fourteen Master of Arts in European Union Studies alumni returned to the place it all began, 15 years after graduating from Leiden University. The international group, representing the Netherlands, Norway, Slovenia, Bulgaria, Hungary, Latvia, Belgium and…

A group of astronomers led by Leiden PhD student Sebastian Zieba has discovered using the James Webb Space Telescope (JWST) that the rocky exoplanet TRAPPIST-1 c has a thin atmosphere. Although the planet is nearly identical to Venus in size and temperature, and was expected to have a thick atmosphere,…

Jeroen Zwemmer’s student days in Leiden ended in 2023, after completing two bachelor’s degrees, a master’s, a student board year, and an exchange semester. Now, he’s a legal policy advisor at a Dutch government ministry.