Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

From towering mechanical heroes to city-destroying battles, giant robots have become one of the most iconic images in Japanese animation. On 28 April 2026, Leiden University will host "Giant Robots, Big Ideas", an afternoon event exploring how these spectacular machines reflect deeper questions about…

In totaal hebben 21 Leidse onderzoekers succesvol een aanvraag ingediend voor de NWO SGW Open Competitie XS. Twee van de beloonde projecten komen van onderzoekers van FGGA: Silvia D’Amato en Jaroslaw Kantorowicz.

Facility, Organisation

Assistant Professor Vedran Dunjko and his team receive a €100,000 gift from Google to support them in their quantum research. The research focuses on whether quantum computers can provide new ways of understanding the mysteries of high-energy physics. Google is committed to supporting ambitious research…

Facility

Facility

The Dutch Research Council (NWO) has awarded Vidi grants to Leiden researchers.

In September 2025 Leiden University hosted a greatly successful academic conference "Care and the Jewish Experience" organized by the Leiden Jewish Studies Network. Among our guests and presenters were academics from many universities, many disciplines and at different stages of their academic caree…

In our teaching, Leiden University gives all students the opportunity to learn about sustainability themes and issues. Social issues, including sustainable development, are addressed in the teaching and research at all of our faculties. On this Day of Sustainability, we highlight a number of subject…

On Thursday 11 December 2025, Daan Roovers, the philosopher and former Denker des Vaderlands (Philosopher Laureate), will give the 54th Huizinga Lecture at the Stadsgehoorzaal in Leiden. Under the title What’s at stake: The boundaries of politics and fair play, she will reinterpret Johan Huizinga’s…

Following the news that TomTom is cutting 300 jobs due to the use of artificial intelligence (AI), FGGA researchers Friso Selten and Alex Ingrams responded with opinion pieces. They place the news in a broader context and call for a more nuanced debate on AI and job losses.

Governments worldwide invest huge sums in their digital services and data strategies. Efficiency and effectiveness are key. But these are not achieved for some people at least, says Professor of Public Policy Sarah Giest. This makes the intended digital inclusion far from inclusive, as she will explain…

Anthropologist Rodrigo Ochigame studies how AI is changing the practice of scientific research. From astrophysics to mathematics to climate science, they find that the adoption of new AI models is raising questions about what counts as reliable scientific evidence.

Amidst the lathes and welding machines of the Fine Mechanics Department, Emiel Wiegers is working concentratedly on a metal cylinder. He and his colleagues design and construct components for researchers' set-ups. ‘We are a bunch of inventors who enjoy helping the researchers in our Faculty.’

Using mathematics to determine whether scientific results are significant or not. Peter Grünwald, full professor of Statistical Learning at the Mathematical Institute (MI) and senior researcher in the Machine Learning group of Centrum Wiskunde & Informatica (CWI), has been awarded an ERC Advanced Grant…

X-ray and CT scanners are widely used devices in research, diagnostics and the industrial sector. And yet they are not nearly as fast and accurate as we would like. Mathé Zeegers is researching the newest technique in the field at the Centre for Mathematics and Computer Science: spectral X-ray imaging.…

Op de dag van de duurzaamheid van 10 oktober startte de 'Billiecup' pre-pilot op de Faculteit der Rechtsgeleerdheid. Aanwezig waren 'plastic soup surfer' Merijn Tinga, Bart Hemmes van het Leiden University Green Office (LUGO) en Esther Kentin, docent bij instituut Metajuridica & projectleider Leiden…

Publishing an article as early as during your studies. Master's students of Nanne Timmer and Astrid Weyenberg are doing it. In the new course 'Leiden Graduate Journal Culture and Society' they are creating an academic journal.

Doing your taxes, Netflixing or driving a car: more and more daily activities are supported by computer applications. It is challenging and expensive to test software thoroughly, leading to errors in most applications. PhD candidate Benjamin Lion made a mathematical framework to deal with this problem.…

The decolonisation war in Indonesia was violent partly because the Dutch military operated on the conviction that ‘an uprising had to be forcibly suppressed.’ This what historian Christiaan Harinck from the KITLV discovered in his PhD research.

On 2 April 2025, eLaw – Center for Law and Digital Technologies of Leiden University will celebrate its 40th anniversary as the oldest digital law department in the Netherlands and the second in Europe. To mark the occasion, eLaw will host a conference with prominent speakers from academia and public…

Social

In studies, it is an old acquaintance, the p-value. But mathematician Peter Grünwald wants to get rid of it. The p-value is too susceptible to fraud and can lead to a distorted picture of reality and chance. That is why he wants to work with the e-value. De Volkskrant spoke to him about it.

Safe use of IT

Safe use of IT

ESA’s space telescope Gaia, which maps the Milky Way, completes its active phase of scanning the sky on 15 January. Over the past decade, Gaia has made more than three trillion observations of about two billion stars and other cosmic objects. ‘Gaia is already the discovery machine of the decade,’ Leiden…

Leiden University wants to contribute to a sustainable society, a healthy climate and the reduction of litter and waste. This intention is in alignment with the introduction of our Pure concept, the integral concept for our catering activities.

Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…

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.

One used 3D cell models to study colorectal cancer, while the other used machine learning for more efficient blood donation. For these achievements, Marieke Vinkenoog and Simon Christian Hansmann were awarded the Krijn Rietveld Memorial Innovation Award on Tuesday 2 September.

Computer scientist Matthijs van Leeuwen is one of four science faculty members who obtained the Senior Qualification in Education in 2021. What was that like and what drives him? ‘In my own education I would have liked to see more attention paid to the responsibility that machine learning and data mining…

Cotton is the most widely used natural fibre for clothes. But how polluting are our jeans and shirts actually? Environmental scientist Laura Scherer coordinated an international research project on the impacts of cotton. ‘The purchases of consumers in Europe can contribute to water scarcity in China…

‘Jelena Prokic, university lecturer and researcher at the Leiden University Centre for Digital Humanities, will be preparing students for the challenges and opportunities of the digital world. In September, six modules will start on subjects such as statistics and digitally searching through texts.…

Effectively treating a severe case of pneumonia is often challenging. Identifying the pathogen behind it can be difficult. PhD candidate Ilona den Hartog tried something new: ‘We searched for answers in substances our own body produces.’ PhD defence on 17 September.

A staggering 6.5 billion chicks are killed worldwide every year. These are generally male chicks that are of no economic value. In Ovo has developed technology that can quickly determine the sex of a chick, to ensure that only female chicks are hatched. The first 150,000 chicks have now hatched in this…