Promotor: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon

Do you know a children's book fanatic? According to the Griffel-jury, 'Rekenen voor je Leven' (Calculating for your life) by Science Communication Professor Ionica Smeets is highly recommended. The book was awarded a silver ‘Griffel’, one of the highest awards for Dutch children’s literature. And that…

On 4 April 2024, a meeting of the standing committee of the Dutch House of Representatives was held. At this meeting, Anna Marhold, Assistant Professor at the Grotius Centre and Wim Voermans, Professor of Constitutional Law, informed the committee about the economic and legal implications of a military…

The headline of the Financial Times on 5 May – 'Northern Ireland tensions threaten to derail Brexit long-term EU-UK deal' – was greeted as a blast from the past. This blast from the past led to the EU requesting to set up an office in Northern Ireland. Joris Larik, Assistant Professor at Leiden University…

Researchers from the Plant Ecology and Phytochemistry group at the Institute of Biology Leiden (IBL) received an STW (Stichting Technologische Wetenschappen) grant for applied studies in plant herbivore resistance with potential for a novel resistance test.

A special find has been made in the Alkmaar Regional Archive: a number of 17th-century book bindings contained pieces of parchment from a manuscript from the 11th century. The original manuscript may have belonged to a princess who fled England after the Norman Conquest.

A more efficient solar panel sounds great. But what if these new panels consume more toxic materials, or their production consumes a lot of energy? Leiden environmental scientists, together with colleagues from the Fraunhofer ISE, address this multifaceted question in a new publication in the prestigious…

Astronomers at ASTRON and Leiden University have used the LOFAR radio telescope to discover a 'brown dwarf' – a faint object more massive than Jupiter, but significantly less massive than the Sun. The discovery of the object dubbed Elegast, opens up a new path that uses radio telescopes to discover…

A new app provides dynamic predictions of survival for patients suffering from soft tissue sarcoma. It was developed by the mathematical Institute research group DASPO, Data Analysis and Survival for Personalised Oncology.

Since the horrific events of October 7, 2023, Leiden students have grappled with difficult questions about Israel, Gaza and Israel/Palestine conflict more generally. Drawing on her expertise in the history of the Jewish experience in the diaspora and beyond, Prof. dr. Sarah Cramsey has held multiple…

On Sunday, November 9 2025, Prof. dr. Sarah Cramsey presented a film at the “Eastern Neighbors” Film Festival in The Hague.

On Tuesday November 25, 2025, Sarah Cramsey travelled with students from her masters seminar on 'New Approached to the Holocaust in Central and Eastern Europe' taught at the History Institute to Amsterdam for a unique opportunity. There, Lotte Sophie Groenendijk, an alumna of the History Research Masters…

On Tuesday November 25, 2025, Prof. dr. Sarah Cramsey traveled with students from her masters seminar on “New Approached to the Holocaust in Central and Eastern Europe” taught at the History Institute to Amsterdam for a unique opportunity. There, Ms. Lotte Sophie Groenendijk, an alum of the History…

A chair tipping over serves as a metaphor for a migraine attack in Thijs Perenboom’s PhD research at Leiden University Medical Center (LUMC). He wants to unravel whether and how we can predict migraine attacks. He will defend his thesis on Tuesday 21 June.

On 14 September the second ‘Labour Day’ (Dag van de Arbeid) event took place: the career afternoon of the BA in Russian Studies and MA in Russian and Eurasian Studies in Leiden. Fifty Dutch and international students gathered in the Lipsius Building to talk with experts in the area of Russia and Eastern…

What can we learn from Cleveringa’s courageous protest speech? ‘Without imagination and a strong community, people do not stand up for one another,' says Cleveringa Professor Michael Ignatieff in his lecture on 26 November.

Grabovski spoke in various media on the occasion of Holocaust Remembrance Day on 27 January 2022.

Professor Julia Sloth-Nielsen has received an A-rating from the National Research Foundation in South Africa, where she holds a Chair in Public Law at the University of the Western Cape.

Since February 1st, 2017 Célia Fonseca Guerra is appointed as professor at the LIC with a chair in applied theoretical chemistry. She will be a member of the Theoretical Chemistry group. Her research interests are related to bioinorganic chemistry and catalysis and her appointment at the LIC will strengthen…

On Monday 9 September, the Dutch Scientific Council for Government Policy (WRR) published its report 'Voorbereidingen op digitale ontwrichting' (Preparing for digital disruption). The report shows that our infrastructure is not secure enough to withstand digital threats and that we are lacking a clear…

PhD candidate Ludwig Hoffmann will spend two years at Harvard University in the US thanks to a Rubicon grant he won on April 11. Using theoretical models he studies biological tissues, for example during morphogenesis. This is the process that causes tissue or organisms to develop their shape. ‘This…

Kunnen algoritmen een hulpmiddel zijn voor advocaten en hun cliënten wanneer ze onderhandelen over contracten? In het preventief recht is dit zeker mogelijk, zo toont het promotieonderzoek van Georgios Stathis. Geleidelijk neemt het algoritme hier juridisch werk uit handen.

In the civil war in Syria, the country's cultural heritage is also under threat. There have been further acts of vandalism in Palmyra and many of the city's museums have been looted. Leiden archaeologist Olivier Nieuwenhuijse's Focus Raqqa project aims to make a digital inventory of the plundered archaeology…

Ambroise Paré, Thomas Sydenham and Herman Boerhaave: all were great medical innovators in their time. We know far less about the 19th-century Russian physician and scientist Nikolay Ivanovich Pirogov. PhD candidate Inge Hendriks researched him in Dutch and Russian archives and collections. She discovered…

Tom Breukel analysed some 250 stone axes from the Caribbean and reconstructed their biographies. This increases our knowledge of production and trade in the period around the arrival of Columbus. PhD defence on 18 April.

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 spectacular new Philippine monitor lizard reveals a hidden biogeographic boundary and a novel flagship species for conservation' . CML-researcher Merlijn van Weerd has participated in a new article in Biology Letters about this discovery.

It is becoming increasingly common to collect data from children and young people through digital means. The impact of this so-called ‘dataveillance’ on children, who are monitored from birth via smartphones and Fitbits, is great.

Researchers at Leiden University Medical Center (LUMC) and Radboud university medical center have been given the green light to deliberately infect volunteers with malaria in order to test a highly promising vaccine on them.

Duaal promovendus Duaal promoveren Werken en promoveren Deeltijd PhD

In 1933, Maria Ulfah Santoso was the first Indonesian women to earn a law degree. During her studies in Leiden University she became involved with Indonesia;s nationalist movement. She went on to be Indonesia's Social Minister, as the first female cabinet member. In this article, historian Wildan Sena…

The Faculty of Humanities has two advisory groups for Diversty & Inclusion: one for staff members and one for students.

What is the name of the medieval Persian poet Nezami (✞ ca. 1209) doing on the cover of an Eric Clapton rock album? Asghar Seyed Gohrab, associate professor at the Institute for Area Studies, talks about it in a new blog for the Leiden Medievalists Blog.

The legal distinction between victims of human trafficking and victims of migrant smuggling is unjust, argues De Massol Rebetz in her PhD thesis. In certain instances, smuggled migrants should be treated the same as victims of human trafficking.

From 25-27 June 2017 the 3rd Conference of the Labour Law Research Network took place in Toronto, Canada. Beryl ter Haar participated in two panels. The first panel dealt with strike law from a comparative perspective between South Africa, Russia, The Netherlands, and Europe. The contribution of Beryl…

Prof.dr.ir. Hai-Xiang Lin is appointed on 1 March 2015 as part-time professor on Data Analytics for Environmental Modelling at CML on behalf of the R. Timman foundation. He will join the CML-department of Industrial Ecology. He has a position at the Department of Applied Mathematics at the Faculty…

Students and researches from all faculties at Leiden University attended a lunch seminar to discuss with four topic experts the rise of AI and the challenges this poses for various governance structures. The event was hosted by Leiden University’s interdisciplinary programmes GTGC and SAILS.

A growing number of AI tools are being developed for the legal sector, to help professionals search lengthy texts or check court rulings. Leiden SAILS researcher Masha Medvedeva, an expert on the technical development of these systems, warns: ‘Users should know what’s under the hood.’

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?

What looked like an ordinary coot’s nest turned out to be a five-star location with a remarkable backstory. Beneath a jetty on the Rokin in Amsterdam, biologist Auke-Florian Hiemstra discovered a true time capsule — complete with face masks from the COVID era and a Mars wrapper dating back to the 1994…

If the Netherlands wants to change its reputation as a tax haven, it must do more according to Professor of Tax Law Jan van de Streek on American news site Bloomberg.

If universities want to open their doors to more students and staff from minority groups, good intentions alone will not suffice. That is what Frank Tuitt, Diversity Officer at the University of Denver, has to say. He will speak at the University’s annual Diversity Symposium on 22 January 2020.

After 25 years, this December will finally see the launch of the long-awaited James Webb space telescope (JWST). Leiden astronomers are watching with great excitement: not only were they involved in the construction of important instruments on board, but the telescope will also reveal many new secrets…

After 25 years, December will finally see the launch of the long-awaited James Webb space telescope. Leiden astronomers are watching with great excitement: not only were they involved in the construction of important instruments on board, the telescope will also reveal many new secrets of the universe,…