At the end of the 7th century something curious occurs in Northwestern Europe. Suddenly, people start burying the dead next to their dwellings instead of in communal cemeteries. Professor Frans Theuws recently published a book on this phenomenon. ‘We wanted to know if the study of these farmyard burials…

The first settlers of the Caribbean have long been regarded as bands of highly mobile groups who subsisted exclusively by hunting, gathering, and fishing. In recent years, however, there has been increasing evidence for the cultivation of domesticated plants by early groups and a lower degree of mobility…

Water damage, old restorations and copper corrosion in some illustrations. De Materia Medica has been through a lot over the centuries. The manuscript dates from 1083 AD and is one of the oldest illustrated Arabic manuscripts in the world. Due to intensive use, De Materia Medica was no longer in good…

Leiden University is taking a major step forward in the energy transition with the expansion of the thermal energy storage (TES) in the Gorlaeus Building. This expansion is needed to be able to heat and cool all the new and renovated buildings on the Campus Square of the Faculty of Science sustainably.…

Soil ecologists Emilia Hannula (Leiden) and Elly Morriën (UvA) received the Golden Medal of Teylers Tweede Genootschap on 5 November. They received the prize for their submission to a competition on sustainable soil management.

How do you count the nanoplastics in your body? Leiden researchers published a method in Nature Protocols today that should make this easier. Important for both environmental and medicine research.

Sabine de Winter

Graduation MIRD Class of 2024: 'The world is better off with students like this'

After an extremely painful conclusion, the Western allies have left Afghanistan and the Taliban have regained supremacy. How will Afghanistan move forward, and what does the departure mean for global relations? Rob de Wijk, emeritus Professor of International Relations and Security, analyses the failure…

The nominees for the IRO thesis prize 2021 and for the Prof. Dr. J.Th.J. van den Berg prize 2021. Who wrote the best Political Science bachelor’s theses?

Four PhD researchers of Leiden University have been selected to participate in the Europaeum Scholars Program 2022-2023. Two of them, Lena Riecke and Sophie Vértiter, are doing their research at ISGA. Time for a introduction.

Since 2009-2010, the West viewed China as more assertive. Especially after Xi Jinping came to power in 2012, the country abandoned Deng Xiaoping’s ‘low profile’ foreign policy. Friso Stevens explains in his dissertation where this change has come from. The dissertation defence is on 28 March.

Terrorism, crisis, violence, intelligence, diplomacy, war and peace are topics that are broadly covered in ISGA's research activities. Regularly, ISGA researchers appear in international media to discuss their research expertise. This item offers an overview of non-Dutch and non-English articles and…

During the guest lecture on 9 February, Jaap de Hoop Scheffer, Rob de Wijk and Frans Osinga discussed the situation in Ukraine and Taiwan. The crises in eastern Ukraine and the increasing tensions around Taiwan highlight the challenges the West faces in deterring aggression in the new era of key dynamics…

From a powerful documentary to a heartwarming classic: four Leiden alumni have chosen their favourite films and will introduce them at Leiden International Film Festival.

Learn how silence can benefit your well-being during Work Stress Week from 11 to 15 November. It’s no surprise that we sometimes need a bit of peace and quiet, says Professor of Auditory Culture Marcel Cobussen. ‘Our brain is exposed day and night to auditory stimuli.’

As a student, Thijs Brocades Zaalberg was primarily interested in diplomacy surrounding conflicts. Through research on peace operations and subsequently the fight against guerrillas, he became increasingly involved with the most violent aspects of colonial warfare. Per 1 September 2024 he is appointed…

From 16 to 20 June 2025, the Institute of Security and Global Affairs of Leiden University hosted the annual Summer School The European Union, the United Nations and Global Governance in The Hague. The programme brought together recent graduates, PhD students, and young professionals from a variety…

During the Cold War, 35 states sat down at the table and negotiated for three years – with results. Lecturer Kai Hebel sees the Helsinki Final Act (1975) as the inspirational example of successful negotiations between hostile states.

Level Up is a non-profit project led by a multi-disciplinary team of doctoral researchers in the framework of the Europaeum Network was founded by the University of Oxford University. Sophie Veriter explains the importance of Level Up, the development of the ‘Level Up Toolkit’, and why this project…

Welcome to the 2024-2025 academic year! I hope this finds you feeling refreshed following an enjoyable and restful summer holiday season. As we start the autumn semester, I want to look back briefly by highlighting 10 significant milestones at LUCSoR from this past year (some of which I referenced in…

The Global Summit, which took place from 12-16 January 2021, is an initiative by Richard Albert, the William Stamps Farish Professor in Law, Professor of Government, Director of Constitutional Studies at the University of Texas at Austin, and Founder & Director of the International Forum on the Future…

Leiden University is introducing 15 interfaculty themes to improve its visibility and strategic positioning. These themes can now be found on our website.

On the 1 June 2021, Professor Eric De Brabandere and Dr Daniel Peat of the Grotius Centre for International Legal Studies of Leiden Law School launched the Leiden Investment Treaty Arbitration Database.

On the 30th of December, we received the sad message that our Kenyan colleague, Kennedy Kaminju Kariuki died on December 28, 2023 in the NW hospital in Nairobi at the age of 35 years from organ and heart failure. Kennedy was a PhD candidate at the CML, Leiden University.

The Leiden interdisciplinary research programme Global Transformations and Governance Challenges (GTGC) and the Embassy of Ireland are jointly organising a special book launch in The Hague. On 13 November, Gerry Finnegan, author and a former director of the International Labour Organisation (ILO), will…

On February 28th of this year Dr. Andrzej Tadeusz Antczak died of cancer after a long battle. Until his retirement in 2023 Andrzej was attached to the Faculty of Archaeology as an Associate Professor in Caribbean Archaeology. From 2017 until 2020 he was the Head of the Department of World Archaeology,…

Ayo Adedokun, Assistant Professor at Leiden University College (LUC) in The Hague, is one of the four finalists in the running for the title ‘Teacher of the Year 2022’. The yearly election is organized by the Interstedelijk Student Overleg, the largest national student organization in the Netherlands,…

At an international high-level conference, Valentina Carraro, Deputy Coordinator of the interdisciplinary programme Global Transformations and Governance Challenges (GTGC) presented her research on human rights in the UN Human Rights Council and Treaty body systems. One of the most practical recommendations…

On Thursday 14 October, Dr Martine van Ittersum gave the first lecture of the Van Vollenhoven Institute’s year-long workshop 'Reconsidering the Socio-Legal Gaze'. Attended by over 40 people, her lecture, entitled 'Van Vollenhoven and Grotius: Soulmates in Empire' examined Grotius’ influence on Cornelis…

The thesis is a major milestone for master students graduating in Political Science. It demonstrates their ability to conduct research independently and to provide a thorough, objective and sound analysis. That requires instruction, discussion, thinking and hard work. Lots of it. In some cases this…

The Leiden University team won the 46th edition of the Telders International Law Moot Court Competition. Besides winning the final round, the team was also awarded the prize for Best Memorial on Behalf of the Respondent.

Everything is peaceful again in and around the Wijnhaven building at Campus The Hague. Earlier today, the location was the scene of a large pro-Palestinian protest. Lectures were cancelled. In the end, everyone left the building voluntarily.

Edmund Flett, alumnus of the International Relations master's programme, has won the 2023 J.C. Baak Prize for his thesis ‘Settlements now, settlement later. Land swaps, settler relocation, and the viability of the two-state solution in Israel-Palestine’.

A team of researchers based at Leiden has taken over the editorship of the journal Global Governance: A Review of Multilateralism and International Organizations. For the first time, the journal will now be based outside the United States. The new Editor-in-Chief, Associate Professor Alanna O'Malley…

Global Transformations and Governance Challenges (GTGC) will hold its first international conference on 8-10 June 2022 in The Hague. Deadline submissions: 22 April 2022.

The Special Issue, edited by Jorrit Rijpma, Melanie Fink, Kristof Gombeer, and Anna Petrig, contains a selection of contributions from the Conference organised by the Europa Institute on the topic of the EU and Maritime Security in October 2018.

Leiden University hosted the 47th Telders International Law Moot Court Competition, which took place between 30 May and 1 June 2024.

The European Commission awarded the project proposal INSIGHT, a follow-up project on illegal firearms trafficking and gun violence from Professor Social Resilience and Security Marieke Liem and PhD-researcher Katharina Krüsselmann of the Institute of Security and Global Affairs (ISGA).

All persons making use of Leiden University buildings and grounds must comply with the general University house rules. These are listed in the Regulations on the Use of University Buildings, Grounds and Other Facilities, and are intended to guarantee order and safety for guests and staff alike.

On 21 January, the Institute of Environmental Sciences (CML) has released two reports on circular economy and urban mining in the Netherlands. In them, together with Statistics Netherlands, they take stock of part of the Dutch ‘urban mine’: how much raw material can we reuse from the electricity grid,…

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

Research

For thousands of years, beavers had a big influence on the Dutch ecosystem and the people that lived there. This is the conclusion of research by archaeologist Nathalie Brusgaard.

A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…

Within the same species of butterfly many different wing patterns can occur. How is this possible? According to researchers Ben Wielstra and Emma Berdan, of the Institute of Biology Leiden (IBL), the answer lies within supergenes. A supergene is a part of a chromosome that contains many strongly linked…

Melinda Susanto is appointed as PhD candidate at the Institute for History since April 2020. She introduces herself below.

With the appointment of Dennis Janssen as operational director at the end of last year, the management team at the Observatory is now complete. Janssen has been working at the university for over twenty years, but the faculty and the Observatory are new to him.