We, the Executive Board and deans, have recently heard from different sources that the conflict between Israel and Hamas continues to evoke strong feelings of tension, anxiety and insecurity within our university community. We take this very seriously and so are once again addressing you all.

Tjerk Oosterkamp's group is conducting what is perhaps the coldest research in the world. The researchers have cooled a sensor to below 2 millikelvin - almost as cold as absolute zero. This allows them to make extremely sensitive measurements. PhD candidate Jaimy Plugge helped build the setup: ‘We are…

Receiving a gift is nice, but giving a present also makes you happy. Development psychologist Mara van der Meulen former member of the Leiden Consortium on Individual Development (L-CID) answered four questions about giving gifts.

Nikie Veld is an education coordinator at Biology. Her job now mainly revolves around getting students back to the Faculty. ‘In the corona era, we were constantly rearranging the timetables.’

Twenty-one dedicated teachers were awarded their Senior Teaching Qualification (SKO) on 21 January. Rector Magnificus Hester Bijl congratulated them in a ceremony in the Academy Building with an extra celebratory touch as the milestone of the 100th SKO certificate was reached.

Researchers at LIACS have found a vulnerability in open-source code that’s been used around the world for over 15 years. They’ve also developed an AI-based tool to fix the problem automatically. ‘You really can’t afford to lean back.’

This month, ten teachers received a Senior Qualification Education (SKO), including Marcellus Ubbink and Daan van der Es from our faculty. Why did they go through the process of getting qualified, and should all teachers have an SKO?

Fungi germinating in the lungs of patients. Doesn’t sound too nice, does it? Luckily, humans can deal with this normally, and we are able to clear the infection before anything comes to harm. However, in people with health issues, Aspergillosis can cause a lot of damage, especially if the fungus becomes…

The Dutch Research Council (NWO) has, within the framework of Research along Routes by Consortia (NWA-ORC), awarded the research project Next Generation Immuno-Dermatology (NGID) with a prestigious grant of 11.7 MEuro. NGID is a nationwide, large-scale project to unravel novel biomarkers for six different…

What began as a PhD project has grown into a website with 120,000 unique visitors each year. With the platform OpenML, researcher Jan van Rijn is contributing to open science, aiming to make machine learning more transparent, accessible, and fair.

The Corstens Commission that investigated whether there are any grounds for the rumours of antisemitism at the Faculty of Law has found no indication whatsoever for such expressions. This also applies to the professor in question. This is evident from the report that the commission chaired by Professor…

Nadia Bouras will give the Annie Romein-Verschoor Lecture on 6 March. She will call for academic freedom for everyone.

Pim Overgaauw is at his best when he can support others. His new position as Institute Manager of the Mathematical Institute is therefore a perfect fit. ‘My main goal is to ensure that our mathematicians can focus on the maths.’

Do you know a children's book fanatic? According to the Griffel-jury, 'Rekenen voor je Leven' (Calculating for your life) by Science Communication Professor Ionica Smeets is highly recommended. The book was awarded a silver ‘Griffel’, one of the highest awards for Dutch children’s literature. And that…

The Executive Board is visiting the university’s institutes to find out what is going on. On 8 July 2025, it was the turn of the Institute of Environmental Sciences (CML), one of the fastest-growing institutes at Leiden University. ‘Our main aim is to preserve our planet for future generations.’

Collaborations with funds and foundations enable a lot of research. As Fundraiser for Foundations and Major Donors, Madelon Rolleman seeks out these opportunities for Leiden University. ‘I’m always looking for ways to start my conversations with funds and foundations.’

The fastest chemical reaction in the universe takes place inside our eyes.

Language is omnipresent: when you talk, app or meet in Teams. Understanding how we communicate with one another and what communication does to us is essential. In her inaugural lecture, Nivja de Jong will call to redress the balance between the sciences and the humanities.

On 17 June, primary school pupils in Leiden will get the chance to explore science in an interactive and engaging way. The exciting new show ‘Wetenschapswonders’ is the initiative of master’s students Boele Visser and Ilse Hordijk, from the Rino Foundation. ‘I’m happy to help build a bridge between…

Study information

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

Arts and leisure

Didactics

Arts and leisure, Arts and leisure

Management, Leadership

Arts and leisure, Arts and leisure

Didactics

Research

Didactics

Study information

Leadership, Personal development, Management

Management, Leadership

She stands out for the moderate tone she takes in discussions on Dutch talk shows. Without judgement you can have an open conversation, criminal lawyer Natacha Harlequin learned in her student days in Leiden. ‘What I personally think of the alleged act doesn’t matter so much.’

Research

Didactics

Arts and leisure, Arts and leisure, Arts and leisure

Didactics

The quality of academic education depends on good teaching. A taskforce of lecturers, education specialists and HRM experts is therefore calling for Leiden lecturers to be given more opportunities and scope to develop their talents. The group hopes that, with a new lecturer development model and concrete…

On 28 June, ten dedicated lecturers received their Senior Teaching Qualification (SKO). Rector Hester Bijl congratulated them in an online meeting. We asked some of them what this qualification means to them, what they believe ‘good teaching’ entails and what makes them so passionate about education…

Migration, globalisation, technological developments, climate change: the greatest challenges of our time all affect our labour market. But how exactly? And can we influence this? Professor of Economics Olaf van Vliet regards it as his job to reveal how things really are. ‘That way, we can work on solutions…

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

Annetje Ottow is the first female president of the Executive Board of Leiden University, which means a return to her Alma mater.

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