The mission in Uruzgan Province in Afghanistan was a formative experience for Dutch soldiers in which many lessons were learned. But most of those lessons have already been forgotten.

If you have a plan that could improve the education or the learning environment of the Faculty of Humanities in terms of diversity or inclusion, you can apply for a grant from the faculty’s JEDI Fund. This year, Nasreen has been helping to develop a new syllabus for the first-year Ancient History co…

Tuesday 7 September sees the release of the book ‘Plots stond het Leidse leven stil’ by Charlotte Boin, a freelance writer from Leiden. This book of interviews gives an impression of the turbulent effect of coronavirus on the lives of students, researchers and partners of Leiden University.

A team of scientists, including Leiden Astronomer Alice Booth, has discovered silicon monosulfide molecules in the dust disk around a young star. Such molecules indicate planet formation. The team made the discovery using the ALMA telescopes. This method provides an alternative when direct observation…

Chemist Tobias Bauer discovered ways to improve drugs by encapsulating them. Packages with iron nanoparticles, for example, can stimulate immune cells. Bauer will receive his PhD on 9 June.

Professor Nira Wickramasinghe has won the American Historical Association John F. Richards Prize in South Asian History for her book Slave in a Palanquin. Colonial Servitude and Resistance in Sri Lanka' (Columbia University Press: New York 2020).

What opportunities does uncertainty offer with regard to innovative behaviour of professionals and what role does leadership play in this?

Climate interventions do not lead to more climate action among Dutch, but they do raise awareness about climate change.

The question of land property titles is a common source of conflict between indigenous communities and federal authorities all over the Americas. A new Panamanian law have led indigenous communities to reach out to archaeologist Dr Natalia Donner. A grant from the Centre for Indigenous American Studies…

Want to find out how to assemble a human skeleton? Do you know what chemistry can be found around you? And are you easily fooled by fake news? Discover this and more at our Science Fair on 3 October.

Today, Leiden University announces who the new Cluster Zuid on the Witte Singel will be named after. Summer 2023, a ballot determined the name of the complex on the former Van Wijkplaats/Van Eyckhof, which is expected to be completed in March. It was already established that the complex would be named…

What is the mission of our Faculty? How do we view diversity and inclusion? And how do we think about the growth of our Faculty in the broadest sense of the word? These themes were the focus of the first brainstorming session for the new faculty strategy. Some 65 staff and students from all levels of…

Starting 1 January 2023, Matthias Haentjens has been appointed as Professor of Civil Law at Leiden University. His expertise lies in the field of property law, insolvency law, and private international law.

Long into the 19th century, seascapes were considered an expression of patriotism. Artists who painted in a 17th century style were valued more. This tradition stifled innovation in the genre, Cécile Bosman has concluded. She will defend her PhD thesis on 13 October.

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…

The Faculty of Archaeology is running a funding scheme to assist small-scale projects that contribute to diversifying archaeological practice in all domains, including classrooms, laboratories, museums, and the field. We discuss the grant with two representatives from the Diversity Committee: Tuna Kalaycı…

A clean street, public transportation, or taxes: these are all public goods that keep society running. But how do people decide which public good to invest in, if at all? These are the kind of questions PhD student Laura Hoenig explores.

A European team of astronomers has discovered the largest stellar black hole in the Milky Way. It is more than thirty times as massive as our sun and is located in the constellation of Aquila, about two thousand light-years from Earth. The astronomers stumbled upon the black hole by chance while preparing…

Martin van Hecke and Lennard Kwakernaak (Leiden university and AMOLF) develop a mechanical metamterial that can count to ten in their research.

During the final meeting of the Thesis Project on 10 February at 'Pand Zuidwest' in The Hague, several students presented their theses. Students from different disciplines conduct research on formulated practice-oriented challenges in The Hague South-West. 'The Thesis Project provides a connection between…

IAt the Criminal Justice Public Lecture on 20 April, Professor of Law and Society Maartje van der Woude spoke about her research into decisions and practice in relation to intra-Schengen border areas and the free movement of persons. The thinking behind the Schengen area is that where the external borders…

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.

For the first time, astronomers have observed in three dimensions that gas from spiral galaxies is blown upwards and downwards at high speed, far out of the galaxy. They thereby confirm the theory of galaxy evolution: that star-forming galaxies create intergalactic gas flows by discharging gas along…

Lotje Zuur sometimes has to perform disfiguring operations. As a head and neck surgeon, she removes parts of the mouth, throat or face of people with cancer. Now a promising treatment may make such operations unnecessary. What would this mean for patients? This is what her inaugural speech on 19 September…

Christina Toenshoff has been awarded the Virginia Walsh Dissertation Award for her PhD dissertation on corporate climate lobbying. The Leiden Political Scientist, according to the jury, ‘makes a significant contribution to the study of climate and business politics.’

During the final event of the PRE-Class Rechtsgeleerdheid, secondary school pupils organised a mock trial on the impact of artificial intelligence (AI) on society. Together with the audience, they explored the possibilities and pitfalls of AI. ‘They all did a wonderful job.’

Lack of manliness, avaricious or too imaginative. These are just a few of the accusations with which British scientists discredited each other over a hundred years ago. PhD candidate Léjon Saarloos researched British scientists around the year 1900 and their idea of what makes a good - and therefore…

ChatGPT, translation machines and bots: for Carole Tiberius, they are a piece of cake. On 1 January, she was appointed professor of Computational Linguistics. 'There ae two elements to the field: computer science and linguistics.'

Too expensive groceries, diseases suddenly breaking out: from the sixteenth to the nineteenth century, hundreds of people documented the world around them in chronicles. A significant number of these texts have been digitised in recent years. Professor of Early Modern Dutch History and project leader…

Children who lost their fathers in early modern England ran the risk of being sold to the highest bidder. Although Shakespeare wrote about it in his plays, the practice disappeared from collective memory for a long time. University lecturer Lotte Fikkers is bringing it back to light in a new Vidi research…

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.…

Ramsey Albers wins Political Science Master’s Thesis Prize 2022

Cookware handles, electrical plugs, brake pads. Unlike other plastics, these ‘thermosets’ cannot simply be melted down and reshaped, making them difficult to recycle. Chemist Roxanne Kieltyka and her team are now exploring a way to make these materials recyclable, potentially transforming the way we…

How can we best tell the current generations about some of the darkest parts of our past? To answer this question, researchers from Leiden are working with the Gedeeld Verleden, Gezamenlijke Toekomst foundation on public programmes about the Dutch history of slavery.

An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…

Leiden University’s Executive Board (CvB) visited Leiden University College in The Hague on Friday 11 November during a working visit tour past the Institutes of the Faculty Governance and Global Affairs. Hester Bijl and Martijn Ridderbos were provided with an overview of the programme, the research,…

You’re about to start your minor at Leiden University. Make sure you are well prepared and get your studies off to a good start.

In July 2023, Leiden University conducted another phase of its ongoing archaeological collaboration with the Kalinago Territory in the Caribbean island of Dominica. Activities focused on mapping and assessing coastal sites impacted by climate stressors, undertaking knowledge-exchange sessions, and co-creating…

How can you increase the effectiveness of inspectors using responsible artificial intelligence (AI)? This is the question the Innovation Center for Artificial Intelligence (ICAI) Lab AI4Oversight is tackling. By developing algorithms and methods, they try to provide optimal support for, for example,…

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.

Students are ever more cautious to express their view on controversial debates. The new student-led D&I initiative at the Faculty of Humanities, COOP, is ready to step in. They organise sessions to guide students on speaking up and respecting the views of others at university.

Astronomer Joseph Callingham and his team have observed for the first time a clear signal from a giant burst from a star outside our solar system. This would have a devastating impact on any unfortunate planet orbiting the star.

A live online New Year’s event on Tuesday 12 January marked the start of the New Year. Dean Joanne van der Leun toasted 2021 and as usual at this event, the annual Meijers prizes and thesis prizes were awarded.

To mark the university’s 450th anniversary, the Leiden Discoveries science route has been updated and was relaunched on the Night of Discoveries. New signs in town and a revamped website tell Leiden residents and visitors the stories of the city’s spectacular discoveries.

Zou jij wel eens willen zien hoe het belangrijkste gebouw van onze Science Campus op het Leiden Bio Science Park tot stand komt? Op de Dag van de Bouw, op zaterdag 17 juni, kan dat!

How should the Quran be read? The manuscript of this holy book makes different interpretations possible. Researcher Marijn van Putten has been awarded an ERC Consolidator Grant of two million euros to explore centuries-old recitations.

On 3 September 2025, more than 30 archaeological objects were returned to Peru, Panama and Costa Rica. The objects come from a private collection belonging to the descendants of physician and amateur archaeologist Dr Hans Feriz. In her will, his daughter stipulated that the objects collected by her…

Translating poetry is notoriously difficult. Translating poetry in such a way that the humorous nature of a poem remains intact is even more difficult, even though it is precisely jokes that can encourage children to read more, notes PhD candidate Alice Morta.

Playgrounds often fail to accommodate children with autism, according to researchers Carolien Rieffe and colleagues. They have published an essay offering practical advice on how to make all children feel safe and welcome for Autism Week (Dutch) and World Autism Autism Awareness/ Acceptance Day on 2…

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