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

Researchers Rowie Stolk and Caelesta Braun’s ‘Litigation in the name of public interest’ Kiem project included an interdisciplinary workshop on the same topic. For starting PhD candidates in particular, this was the chance to build valuable connections.

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…

On Monday 27 October, Jasper goes on safari in the Van Steenis building. And will he manage to stay dry more often than he gets soaked cycling between meetings? You’ll find out – along with the rest of Jasper’s day – in this column.

This February, Leiden University honors two scholars who have responded to the challenges of modern society in important, innovative and exemplary ways. Catherine Malabou and Safiya Umoja Noble will receive honorary doctorates for their ground breaking research in philosophy and internet/media studies…

‘Take science communication more seriously.’ This is the message that Ivo van Vulpen, professor by special appointment in Science Communication in Physics, wants to convey during his inaugural lecture. At the moment, a lot of researchers look down their noses at this while it is extremely important…

How can we cooperate better as a Faculty? Both with each other and with the outside world. Around 70 students and staff discussed this during the latest strategy session in Corpus. Keynote Harry van Dorenmalen, former president of IBM Europe: 'You know best what this Faculty stands for and what it n…

How is academic freedom restricted by the academic community itself? This was the central question at a debate at Leiden University on 14 November.

Joao Schim is a business analyst and together with his colleagues of the Sneaker Team, he walks through the buildings of the University for five months. These 6 experts are mapping all measurement and research systems, starting with the Faculty of Science. Joao tells us what he does and what catches…

Learn how silence can benefit your well-being during Work Stress Week from 11 to 15 November. It’s no surprise that we sometimes need a bit of peace and quiet, says Professor of Auditory Culture Marcel Cobussen. ‘Our brain is exposed day and night to auditory stimuli.’

Alumnus Anoma van der Veere did Japanese studies and talks in this interview about his studies in Leiden and his work as a researcher at the Leiden Asia Centre and as Japanese correspondent in Tokyo.

You might not have gone to medical school but you can still help someone with suicidal thoughts. This is what three staff members who took training from 113 Suicide Prevention Foundation are keen to emphasise. ‘I’ve got a better idea of what warning signs to look for and how to refer students to the…

A new academic year also means a (partly) new Faculty Council. What are the priorities for this year? We spoke with Chair Véronique Roos and Vice-Chair Lars Jeuken. ‘Anyone can come to us – we’re here to help.’

The new institute manager of the IBL studied biology for six months, but went in a completely different direction: development cooperation and the financial sector. Three decades later, Resi Janssen is making a radical career switch. Or isn’t she? 'In ten years’ time I want IBL to be in a new, sustainable…

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.

Leiden University is under fire: it is allegedly doing too little to tackle antisemitism. Rector Hester Bijl responds to this accusation and to a video from 2014 on social media in which extreme remarks are made. ‘We can be short about such comments: they are unacceptable. The university is and always…

The interdisciplinary AI & Society minor of Leiden University brings together students and lecturers from a wide range of disciplines. Together they look at the impact of AI on society. Students are enthusiastic about this merging of worlds.

Alex Colling himself calls his bachelor's thesis ‘the highlight of his time in Leiden’. And according to his supervisors, that resulted in an outstanding thesis, with great attention to detail. The Mathematics and Physics student worked on a mathematical description of monopoles: hypothetical particles…

Do you know what to do if a rubbish bin catches fire, a student takes ill or a colleague falls off their bike? Our emergency responders do. They are ready to evacuate buildings, fight fires and offer first aid. Why not join the team?

Neanderthals were able to outwit straight-tusked elephants, the largest land mammals of the past few million years. Leiden professor Wil Roebroeks has published an article about this together with his German colleague Sabine Gaudzinski-Windheuser in the Science Advances journal.

Five projects with a lead applicant from Leiden will receive an Open Science Fund grant from the Dutch Research Council (NWO).

People with relatively high levels of lipids in their blood are less likely to develop allergic conditions such as eczema and asthma. These lipids cause genes that play a key role in allergic reactions to be less active. Researchers from the Leiden University Medical Center (LUMC) have published an…

Following in the footsteps of Professor Jan Zaanen, visiting fellow Louk Rademaker is exploring quantum effects in so-called strange materials. His research is paving the way for new materials that could be used in emerging technologies.

Do you also love a city where nature can bloom, crawl and flutter freely and exuberantly? And do you fancy a challenge out in the fresh air? If so, grab your mobile and take part in the BioBlitz 'Higher Education is Flourishing' from 22 May.

How do you increase the EU’s EQ so that citizens and countries feel a greater sense of belonging and safety in the EU, and the countries work better together? To answer this question, Professor of European Law Armin Cuyvers works, among others, with social psychologists. Inaugural lecture on 9 Decem…

Few people would associate the name Anton de Kom with Leiden. Yet the Surinamese freedom fighter is the subject of an exhibition at Museum De Lakenhal.

Dutch children’s picture books are full of animals, but mainly mammals are portrayed. Especially pets and exotic animals are popular. A large part of the Dutch fauna is less visible, but biologist Michiel Hooykaas of Leiden University sees plenty of opportunities for a more biodiverse book world.

Not all problems are easy to solve, but with enough bright minds, you make progress step by step. ‘The kind of problems I am interested in have been occupying mathematicians for over two millennia,’ says theoretical mathematician David Lilienfeldt. In September, he started at the Mathematical Institute…

The James Webb Space Telescope continues to surprise us with stunning pictures, but of what exactly? Astronomer Nienke van der Marel shows with three images how massive stars lead short but explosive lives.

What do ten-year-old children and chatbots have in common? PhD researcher Bram van Dijk studied language development in both children and AI language models. ‘It’s actually quite practical that we attribute human traits to a chatbot.’

Her office is a bit tucked away in a corner of the building, but her department is always buzzing with activity. Since May 2024, Renate Rijbroek has been our new Head of Facility Management. There was no slow start: ‘We are working hard towards the official opening in September.’

Leiden University is celebrating its 450th anniversary in 2025 with a feast for the eyes, ears and spirit. The anniversary year opens with an extra special Dies Natalis on 7 February. Highlights includes an alumni festival, three exhibitions and a canal concert.

Leiden Observatory has achieved a rare feat: two of its research teams have been awarded prestigious ALMA Large Programmes, allowing them to study how galaxies formed and evolved in the early Universe using cutting-edge telescope observations.

Jasper Knoester started on 1 January as our new dean. How is he doing, what exactly does he do and what does his day look like? In each newsletter Jasper gives a glimpse into his life.

How can the academic world best handle the new political reality in the United States? This is the question that managers, lecturers, researchers and students at Leiden University discussed on Friday afternoon at a gathering in the Kamerlingh Onnes building. ‘Don’t just give in; defend academic free…

How safe are the nanoparticles in transparent sunscreen, anti-odour socks and bacteria-resistant plasters? Although microbes are present on all organisms, the tools that estimate the safety of nanomaterials still hardly take them into account. Bregje Brinkmann explored the role of these microbes during…

When you think of physics, do you think only of complicated formulas? You’re not the only one. Therefore, every year, the Leiden Insitute of Physics organises the LION Image Award to show another side of physics: beautiful images about intriguing science. The winner of the 2022 photo competition captured…

Workshops, tours, talks, music, an AI photobooth, interviews, a special poem and the launch of the LUF Children’s Fund. Alumni celebrated their alma mater’s 450th birthday in style on Saturday at the massively oversubscribed Dies Natalis Festival.

From the birth of the universe to the molecules in a planet's atmosphere. The first five pictures from the James Webb Space Telescope (JWST) show the enormous range in which the space telescope can operate. Ewine van Dishoeck, professor of molecular astrophysics, took a look at the first images Tuesday…

Our banking, DigiD and sensitive medical data: what if our entire digital infrastructure can no longer be trusted? Jelle Don has this question permanently in mind as he goes about his research. And that is no bad thing because without new digital security measures, our society will be extremely vuln…

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

Freezers set three degrees higher, a recycling bin for plastic petri dishes or timer switches installed on equipment: a growing number of Leiden University laboratories are taking small – but effective – steps to reduce their environmental impact, via the internationally recognized Laboratory Efficiency…

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.

In the complex academic playing field, it is crucial that researchers and research support professionals know how to find each other. At Leiden University, these collaborations are indispensable too, say professor Gilles van Wezel and project manager Mariana Avalos Garcia. ‘Without support, this project…

Would you like to share your expertise with a wide audience, and in a very convenient way? The Vraag het Leiden (Ask Leiden) video platform is looking for academics who can answer questions sent in by the general public, both young and old, by recording short videos.

We often feel at ease in a salon chair, and the conversation soon starts to flow. That feeling will be recreated in the coming weeks in the [s]TATTOO pop-up studio. Students and staff can share their thoughts, feelings or worries – and will leave with an artwork based on their story.

Nanoplastics can accumulate in developing hearts, according to a study by biologist Meiru Wang from Leiden University. Her research on chicken embryos sheds new light on how these tiny plastic particles pose a threat to our health.

They confounded expectations and went to university anyway – as a woman of colour, a working-class student or refugee... Throughout the centuries the university has always welcomed pioneers. Students for whom going to university was not the obvious choice and who did not grow up in an academic environment.…

A microscope with incredible sharpness that leaves samples unharmed – Guido Stam helped develop one. During his PhD research, he combined light and electrons to study biological samples. ‘We can now measure things that simply weren’t possible before.’

What if you could watch a single cell eat in real time? This could answer questions about diseases such as cancer. PhD candidate Yixuan Wang has developed a glowing chemical tool that makes this possible, revealing how living cells take in nutrients.