Many of the language rules we use today were formulated in the 17th and 18th centuries. In a dual track at the universities of Leiden and Brussels, PhD candidate Eline Lismont investigated why some rules became successful while other rules were quickly forgotten.

Leiden researchers have developed a groundbreaking model to advance cancer immunotherapy. Using a 3D printer, they create mini-tumors within an environment that closely mimics human tissue. They have also developed a method to monitor real-time interactions of these mini-tumours with immune cells during…

Happy Holidays from LACDR

With the help of the JEDI fund, Fatima al Moufridji and Thijs Porck went in search of cultural contacts between early medieval England, Northern Africa, and the Middle East. Together they made four knowledge clips that can now be seen on YouTube.

How do you progress from an immense gas cloud somewhere in the universe to a star with planets? Research by Astronomy PhD student Martijn van Gelder sheds more light on the earliest phases of this process. He will receive his doctorate on November 24th.

De Raad van Advies bestaat uit leden die een binding hebben met de faculteit. Daarnaast zijn zij goed thuis in de wereld van de advocatuur, de rechterlijke macht, de overheid en het bedrijfsleven. Het faculteitsbestuur gebruikt de adviezen van de Raad van Advies bij de beleidsontwikkeling van de faculteit…

Psychologen laten zich horen over de plannen om de internationale bacheloropleidingen op te heffen in de Randstad en Tilburg. Het inititatief #Ikbeneenpsycholoog van Judith Schomaker op LinkedIn vindt navolging. Lees een selectie van de posts en ook het blog van Eiko Fried over de consequenties.

Research

How do atoms and molecules end up forming planets? That's what astrochemist Julia Santos studied during her PhD. She discovered the dominant process behind the formation of methanol in space – a finding that surprised the entire field.

Research and education at the intersection of law and technology is more important than ever. With its 40 years of experience, the eLaw department, founded in 1985, is ready for the future. Time to reflect on four decades of innovation.

An international team of astronomers led by Ardjan Sturm of the Observatory has made the first two-dimensional inventory of ice in a planet-forming disk of dust and gas surrounding a young star. The researches, including Melissa McClure, used the James Webb Space Telescope and publish their findings…

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 study places to consulting collections and from a meeting with your faculty liaison to getting books after opening hours: the new Science Library offers it all. The library moved to a brand new location in the Gorlaeus building and will be open starting 15 April.

The International Astronautical Congress (IAC) that took place last week in Paris was extremely successful for IIASL.

The special of the Dutch History Programme Andere Tijden 'Missie Geslaagd?' (Mission accomplished?) tells the story of the last fathers of the Holy Spirit Congregation who live in Gennep. Professor of Anthropology and Sociology of Africa Peter Pels is one of the specialists in this episode. He explains…

The faculty Happy Holidays Drinks for all staff and student assistants was held on Tuesday 19 December. There was a great turn out and fun was had by all.

Helma de Jong

The Leiden archaeologist Harold Berghuis was closely involved in archaeological discoveries off the coast of Java. Skull fragments and other fossil remains provide new insights into the world of Homo erectus. The discovery was the subject of numerous news reports.

The supermassive black hole at the center of the Circinus galaxy is being fed with gas by two spiral arms. This is what PhD candidate Wout Goesaert discovered. But only a small percentage disappears into the black hole, the rest is ejected.

Waarom is empirisch-juridisch onderzoek van belang voor de rechtspraktijk en het wetenschappelijke onderzoek? Op die vraag kregen masterstudenten van de afstudeerrichtingen civiel recht, ondernemingsrecht en financieel recht antwoord tijdens het congres over empirisch-juridisch onderzoek en het privaatrecht…

Associate professor Salvador Santino Regilme spoke in various media outlets about the tensions between the United States and Venezuela.

Sufyan Al Karaimeh, a guest researcher at the Faculty of Archaeology, is currently involved in the Aerial Archaeology in Jordan (AAJ) Project. Over the past 25 years, the individuals involved in this project have not only compiled an expansive collection of photographs but have also helped discover…

From more natural beaches to research on how peace advances biodiversity. Two Leiden research projects have been awarded funding from the European Biodiversa+ partnership. These are grants for interdisciplinary research on restoring biodiversity.

Leiden University wants to attract the best academics. What requirements does it set for new academic staff members? What requirements must you meet for a career in academia? Read more about our career policy for academic staff.

Employees of departments participating in the Flexible Working pilot can reserve workstations themselves via SharedDesk. You can reserve a workstation in the office up to one week in advance. If you wish to cancel your reservation, please do so at least 24 hours in advance.

Leiden University is proud of its research and teaching, its staff and its students. This is why we are keen to inform society of what goes on at the University.

Sharing data and documents with colleagues or other organisations can be useful, but it can also entail various risks. You should therefore think carefully before sharing anything, and always ask if you’re not sure whether sharing is permitted.

On Tuesday, February 10, 2026, Professor Saskia Jaszoltowski, the new Visiting Professor for Central European Studies at Leiden University joined students, colleagues and friends of Austrian Studies at Leiden for a lunch-time talk that introduced her exciting research to our community.

On Tuesday 10 January, the Meijers Lecture was held followed by the New Year’s reception in the restaurant of the Kamerlingh Onnes Gebouw. Dean Joanne van der Leun opened the reception with a New Year’s speech. The following is a short overview of the event.

A knowledge-sharing session was held on Thursday 25 March for members of boards of examiners. Good reason to give one of them a call. We spoke to Jan Jansen, Chair of the Board of Examiners for Cultural Anthropology and Development Sociology (Faculty of Social and Behavioural Sciences) and an external…

University lecturer Laurie Cosmo, having grown up in New York, came to the Hague from Rome, Italy, where she fell under the spell of the Kunstmuseum. ‘I loved the building even before I worked at Leiden University.’

He started out as a temporary staff member at the CML’s education office, and now – eight years later – Jasper Williams is the institute’s new Director of Operations. In this interview, he talks about entrepreneurship, making a social impact, and playing competitive bridge. ‘I like doing things properly,…

Starting as an MP during the Covid-19 pandemic and after the recent ‘role elsewhere’ debacle during the coalition talks for a new Dutch government, alumna Mariëlle is looking forward to making a real contribution in society.

Lindsey Boosten followed her passion by combining the study of aviation and law in the Advanced Master in Air and Space Law in Leiden. It turned out to be a great choice: ‘It was one of the best years from my student days.’

An Honours Class about the ostensibly unrecognisable worlds of insular Southeast Asia teaches students a fundamental piece of wisdom: "We do not differ much from the people at the other end of the world."

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.

The availability of natural resources, the energy transition, the importance of circularity and our dependence on China. This and more is what Professor of Industrial Ecology René Kleijn's inaugural lecture is about.

The rise of AI will transform the role of doctors, claims Professor of Intensive Care Medicine Sesmu Arbous. Her academic chair focuses on integrating technology into patient care.

Starting as an MP during the Covid-19 pandemic and after the recent ‘role elsewhere’ debacle during the coalition talks for a new Dutch government, alumna Mariëlle is looking forward to making a real contribution in society.

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.

Researchers need to work in specialized environments when they work with dangerous bacteria and viruses. These microbes spread easily, so only in labs with a high biosafety levels they can be studied. Unfortunately, to look at the microbes properly, expensive microscopes are needed that are not always…

Astronomers have captured a new deep field of Pandora's Cluster (Abell 2744) with the James Webb Space Telescope. The images show never-before-seen details. The results are described in four scientific papers. Leiden astronomers Marijn Franx and Mariska Kriek collaborated on the study. 'This opens a…

Working in a laboratory is different from working in an office. Some of the rules that apply when working in or around a laboratory are given below.

The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

Jus post bellum, the body of laws and norms governing the transition from armed conflict to peace, has emerged as a crucial issue for international law scholars, governments, and all concerned with building a just and sustainable peace. The Jus Post Bellum Project, funded by the NWO and hosted by the…

Jasper Knoester startte op 1 januari als onze nieuwe decaan. Hoe gaat het met hem, wat doet hij precies en hoe ziet zijn dag eruit? In elke nieuwsbrief geeft Jasper een inkijkje in zijn leven als decaan.

In a recent study, Dr. Moji Aghajani and colleagues show that adolescents with a severe form of Conduct Disorder (CD) -with limited prosocial emotions- require an unusually large amount of brain capacity to read emotional faces. These effects were found in comparison to CD youth without limited prosocial…

In a new article in the journal Scientific Reports, Leiden archaeologist Wei Chu and colleagues report on recent excavations in Western Romania at the site of Româneşti, one of the most important sites in southeastern Europe associated with the earliest Homo sapiens. The site gives an important glimpse…