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.’

‘I'm setting Academia in Motion by promoting transparent and rigorous research practices and by advocating for more interaction between science and society.’ With these words, Ludo Waltman, Open Science Ambassador for Academia in Motion, highlights how he is contributing to the culture change towards…

When you think of a library, you probably picture books – or students quietly studying. But for subject librarian Rutger de Jong, most of the work happens online. ‘We never throw anything away. Everything produced here in the name of science should remain findable.’

Marlon Titre (1982) studied at Royal Conservatoire The Hague, did his PhD and studied at Leiden University, earned several other qualifications and is now, among others, Director of Filmhuis The Hague. Who is this multi-talent?

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.

During Consent is Key Week, we’re exploring ways to eliminate sexual violence within our university community. We spoke to Assistant Professor Mischa Dekker, who specialises in gender-related violence, about how to prevent unacceptable behaviour among students and staff.

Koen Keijzer combined three mathematical models into one unified system capable of making meaningful predictions about how cells form blood vessels. This helps biologists studying the chaotic, leaky blood vessels found in and around tumours.

What if I completely changed everything? A subject without lectures or exams, where the right answer is not important and where students work with their hands. With this idea, Michiel Brentjens reformed the course Radioastronomy. His students are so enthusiastic about this approach that they nominated…

Astronomers have used data from the European Gaia Space Telescope to discover 55 high-speed stars launched from the young star cluster R136 in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. This increases tenfold the number of known “runaway stars” in this region. The team of astronomers,…

Assistant professor Joost Willemse firmly believes that as a teacher, you’re never done learning. ‘Students ask questions about things you’ve never thought of yourself. Ultimately, that makes you better at your job.’ That’s why he always encourages his students to ask questions. And it’s appreciated:…

Greenhouse gas emissions related to pharmaceutical consumption increased by 77 percent over the past 24 years, according to a Leiden University study published in The Lancet Planetary Health. Moreover, efficiency gains have stalled since 2008. ‘Our best option is reducing consumption and minimising…

Fifteen passionate lecturers from Leiden University were awarded the Senior Teaching Qualification (SKO) on Thursday 27 January. One of them is Frank Takes, as of 1 February Associate Professor of Computer Science. For him the SKO was a good opportunity to reflect on how he teaches.

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.’

On Monday 28 March a ‘pen test’ will be carried out to check the security of the classroom scanners. These people counters in University buildings were temporarily switched off in December after there was growing disquiet about privacy aspects of the devices. The pen test will be carried out in the…

In the short term, no reorganisation is foreseen within the Faculty of Humanities, nor are any compulsory redundancies expected. Nonetheless, structural changes remain necessary. This is evident from the faculty’s draft budget for 2026 and the accompanying financial multi-year outlook.

Whereas the Netherlands Court of Audit used to conduct an investigation once a year, the average civil service organisation now has a few per year to contend with. Is so much going wrong nowadays? Not at all, says Professor by Special Appointment Sjoerd Keulen. ‘It’s one of the methods that makes democracy…

Parents from all corners of the university bring their children to De Kattekop, the university’s day nursery. How does manager Ellen Buschman use her psychology degree in her work?

'Education has always been something I am very interested in,' says the passionate Michiel Hogerheijde. He was already chairman of the astronomy programme committee and has been teaching for many years. Since 1 October, he is also the new Programme Director of the astronomy bachelor. 'I really enjoy…

From 1 November we will have a new mobility policy and will track our commuting with an app. The new regulation is more sustainable and will also save us time and effort, say the union reps from the Local Consultative Body.

For over 25 years, Christiaan Pen has been a valuable member of the faculty, both as an instrument maker and emergency responder. What is it like to support your colleagues during crises? Five questions for Christiaan.

They were eagerly awaited: four letters from five ministers that should provide clarity on how to get us out of the nitrogen crisis. Nitrogen expert Jan Willem Erisman explains the plans. And says whether they will get us out of the nitrogen crisis.

Major developments worldwide are creating new challenges for society. The pandemic has hit us hard, for example, and we are already feeling the effects of global warming. How can society and politics deal with the urgent problems of our time? That is the theme of the Global Transformations and Governance…

Early diagnosis, new treatments, and personalised care: all of these are possible if we can better unlock the wealth of information hidden in health data. Unfortunately, this data is often poorly organised, difficult to access, and not interoperable. The new international Leiden Institute for FAIR and…

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.

How is interdisciplinary collaboration faring at Leiden University? And has disciplinarity been completely abandoned? I’d like to reflect on some concerns among colleagues and on our plans for the future.

Destroying proteins from the Golgi apparatus of the cell in a controlled manner. That is the focus of chemist Marta Artola’s pioneering research. By developing a groundbreaking technology to target specific proteins in the Golgi, Artola aims to unlock new ways for drug development. For this ambitious…

Some governments and companies are pursuing a more circular economy, but what is the best way to get there? An international group of industrial ecology researchers wrote a report that stresses the importance of including the scientific side into policies and practices. ‘We feel an obligation to support…

Hiring academics is more than just tallying up publications, says academic director and history professor Jeroen Duindam. He and his colleagues have come up with tips and guidelines for interview committees that align with the new system of recognition and rewards.

Aram Segaar, Corporate Information Security Officer in the Information Management Department, works every day with his team to create and maintain a secure working environment at Leiden University. October is ‘Cybersecurity Month’. Aram explains how the university stays safe and the conscious (and unconscious)…

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.

Are international courts effective? Dr Fatou Bensouda, a former Lead Prosecutor of the International Criminal Court in The Hague (ICC), will discuss this issue during her lecture at the Owada Symposium 2025. The ICC’s efficacy depends on the actions of its member states, she says.

Our ever-increasing reliance on software and technologies, out of convenience, necessity or otherwise, binds us to supranational and commercial companies that provide them. Is it essential that governments, universities, and researchers ensure that they continue to be in control of their data and software?…

How to take ownership of your career? To find out, students from ‘Design Your Career as a Climate Change Maker’ visited a farmer who has done just that. They learned from him that it’s never too late to start working on something you believe in.

Imagine scanning lion dung or a mouse dropping and instantly knowing exactly what and how much the animal has eaten. Thanks to new DNA techniques, this is becoming increasingly feasible. PhD student Kevin Groen tested how effective these techniques are at unraveling the diets of wild animals.

The world is in turmoil. International wars and conflicts have been raging for some time. And political and social developments are causing insecurity, uncertainty and unrest. This has not gone unnoticed within our university community. We have seen protests, demonstrations and other incidents. This…

Professor Judi Mesman interviewed 40 people of colour in leadership positions. What can we learn from them?

Leiden University wants to increase the security of its systems. That is why since 1 May the ‘sneakers team’ has been making many miles through our buildings. This team with various specialists will map all measuring and research systems. Today Roland van Dam introduces himself, he is the project manager…

A pandemic of lianas is sweeping through tropical forests, reducing their ability to store carbon and limiting their role in mitigating climate change. Two recent studies from Leiden University highlight the issue. ‘We now understand why lianas are visible in satellite imagery.’

The university is home to many pearls of research institutes that do not make the news every day. The Executive Board visited one such pearl, the Institute of Philosophy, on Tuesday 1 July. It resulted in an inspired conversation.

Smiling faces, a mass dance and a bit of awkwardness: after two ‘corona editions’ of EL CID, the Leiden introduction week is back with a vengeance this year. A total of 3,412 first-year students from Leiden University and University of Applied Sciences Leiden, accompanied by 486 mentors, started EL…

‘We can only achieve this if we work together.’ This is what Rector Magnificus Hester Bijl emphasised as she spoke about professional research support at the opening of the second Research Support Conference at PLNT on 14 June. For the 80 research support staff present, learning and inspiration was…

Not experiments and lab coats, but computers and artificial intelligence: this year's Nobel Prize in Chemistry went to the inventors of the groundbreaking AI model, AlphaFold. This programme accurately predicts protein structures based on their genetic code—a crucial step in understanding biological…

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…

Gianne Derks is the MI’s new scientific director from 1 May. She has worked abroad longer than in the Netherlands and, after more than 27 years in Surrey, she dreams in English. Who is this new director and who or what managed to entice her to make the move to Leiden?

Simulations of galaxy formation provide much more information about galaxies than a telescope. Simulations have been improving significantly in recent years. Astronomer Evgenii Chaikin made such a significant contribution to this field that he graduated with honours on February 27th.

Lecturers Marjo de Graauw and Malte Riemann have both received a Comenius Teaching Fellowship.

The Netherlands is embroiled in a complex nitrogen crisis. Berent Baris wants to use his NitroGenius game to demonstrate the complexity of this crisis.

Elephant toothpaste, a trip among the stars or a lecture on mathematical juggling: on Sunday 8 October 2023, the Faculty of Science opened its doors for the third edition of the Leiden Science Family Day. A programme jam-packed with workshops, demonstrations, lectures and peeks behind the scenes for…

Marco van Eijk is the new Educational Director of the Bachelor's Life Science and Technology (LST). Since 1 September he has been responsible for ensuring the quality of the programme. ‘LST is a unique programme and everyone has to keep working hard for that. That is my main task.’

The university's CO2 footprint - a visual representation of Leiden University's environmental impact - is calculated every year. The CO2 footprint for 2020 shows a striking break in the trend in terms of energy use, mobility and waste.