The Royal Holland Society of Sciences and Humanities (KHMW) has appointed four Leiden professors as members. Petra Sijpesteijn, Vanessa Mak, Mariska Kret and Miranda van Eck have recently joined the KHMW.

Leiden University publishes the highest percentage of preprints in the Netherlands. Why is that and why post your article online before it has been peer reviewed? Professor of Quantitative Science Studies and keen preprint poster Ludo Waltman explains.

Guus Heerma van Voss, professor emeritus of labour law, delivered his farewell lecture on 18 October and held a mirror up to his colleagues and himself. Had they done enough to ensure the welfare state keeps up with the times? ‘Did we just stand by and watch?’

Public procurement is not a hot topic for the average citizen. That’s a pity, says PhD candidate Erik Plas, who did research on the fair spending of public money: 'If a council project goes completely haywire, because it costs more than expected, it could even mean that local taxes will have to be r…

Organisations like the UN and the EU should be given more powers to combat transboundary problems. This is the message of a report published by the Swedish SNS Democracy Council, whose authors include Prof. Jan Aart Scholte of Leiden University. The researchers also wrote the following article.

Dozens of Dutch nationals are being held in detention facilities in Northeast Syria or have been transferred to Iraq, risking torture or the death penalty. PhD candidate Ida Asscher says the Netherlands should repatriate them. 'States must comply with international law, even in difficult situations.…

Holocaust scholars Barbara Engelking and Jan Grabowski will jointly hold the Cleveringa lecture on November 26. They were accused of defamation in Poland for a book they co-edited. How has this affected them? ‘This is an attempt to wear us down.’

Workshop

Workshop

Didactics, Working effectively, ICT

What skills do students need to function as academic professionals and engaged citizens?

Workshop

Workshop

Expositie

Conference

How many children are born with the help of a surrogate mother in the Netherlands, and which legal obstacles can arise? Through a new interdisciplinary study, researchers at Leiden University are attempting to provide clarity about surrogacy processes.

To what extent can global issues be solved by multistakeholder collaboration, a relatively new type of organisation? Jan Aart Scholte, the coordinator of the Global Transformations and Governance Challenges (GTGC) interdisciplinary research programme, has received a Dutch Research Council (NWO) grant…

With the long lockdown, it’s been a hard year for Leiden businesses. How can the local economy bounce back and how can the University help? Two talk shows discussing this were recently recorded in the Academy Building. They will be aired on Unity TV on 28 September and 12 October.

What defence strategy should the Dutch government adopt for the next four years? Our experts advise investing in social resilience, strengthening ‘soft power’ and integrating defence awareness into education.

On 20 March, the final of the Legal Tech Challenge 2025 took place at Leiden University. After weeks of collaboration, brainstorming sessions and workshops on legal accessibility, five student teams presented their innovative legal apps to a jury.

Complex research with a generous sprinkling of jargon: PhD defences can be difficult for non-experts to follow. In the compulsory new lay talk, PhD candidates begin by explaining their dissertation in words of one syllable. And it’s not just the PhD’s family and friends who appreciate this.

On 22 June 2022, the research group on Institutions for Conflict Resolution organised its second annual overarching PhD lab. During this meeting, the PhD researchers connected to COI presented the current status of their research projects.

Twenty-one dedicated teachers were awarded their Senior Teaching Qualification (SKO) on 21 January. Rector Magnificus Hester Bijl congratulated them in a ceremony in the Academy Building with an extra celebratory touch as the milestone of the 100th SKO certificate was reached.

On 8 December, in honour of Human Rights Week, Roeland Böcker gave a public lecture about his experiences as ambassador to the Council of Europe. Between 2017 and 2021, Roeland Böcker was the representative of the Netherlands in the Council of Europe.

Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

‘Don’t forget us. Don’t stop talking about Iran.’ In a packed lecture hall at the new Spui Campus in The Hague, a panel discussion was held this Tuesday on recent developments, tensions and the wave of state violence in Iran.

Yvonne Erkens has been appointed Professor of Labour Law at Leiden University as of 1 January 2026.

Professor of International Relations Daniel Thomas is clear: anyone taking peace in Europe for granted is shutting their eyes to reality.

Now the Dutch national Law Sector Plan has been positively evaluated, the temporary funding provided to Leiden Law School for the research projects ‘Institutions for Conflict Resolution’ and ‘Empirical Legal Studies’ will become structural.

The debate on migration and criminalisation concerns everyone from citizens and policymakers to academics. The Crimmigration in an Age of Authoritarian Drift conference in Leiden in July aims to offer new insights and encourage collaboration. Artists are playing a key role.

Hortus botanicus Leiden is a treasure trove for research into interactions between species. Surprising discoveries are being made with new techniques such as DNA analysis, machine learning, and audio and video monitoring. Hortus prefect Barbara Gravendeel will explain more in her inaugural lecture on…

Connecting scientific fields, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. What did the university achieve in 2024? A small sample.

Leiden University is seeking bids from developers for housing in Nieuw Rhijngeest-Zuid, the Oegstgeest part of the Leiden Bio Science Park.

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

Study information