Supply risks are not new. But the aggravation of power conflicts on the international stage coupled with global shifts towards energy transition and digitalization has triggered the next supply risk research era.

Orange the World 2025

Lecture

The central research question focuses on identifying shifts in the urban social network in terms of private, semi-public and public space by means of mapping the spatial distributions of wells and cesspits in the town of Haarlem in the course of the pre-industrial period (1200-1800). Shifts may be indicative…

Islam has a rich and fascinating history, but if you talk about it in the classroom, all kinds of opinions and emotions come up. 'How do I incorporate these responses into my lessons?' The Netherlands Institute in Morocco is organising a study trip on ‘Islam and Citizenship’. Fourteen teachers from…

Cristina Grasseni’s project

Musical instruments are multiple things: they are objects but also means of communication; they are technological and also deeply connected to embodiment through the player; and they leave certain cultural traces (Ricoeur 1975/1984). This research project explores how literary texts from the 19th century…

Each student chooses an individual topic or theme on which they would like to do a graduation research project. Read the below rules and guidelines before you embark on the graduation project.

Leiden University researchers and their collaborators report the development of new research frameworks that use day-to-day smartphone behavior gathered from a large sample of healthy people to help understand aging, and how aging alters with epilepsy and stroke. These reports occupy two back-to-back…

This thesis covers various applications of topology in condensed matter physics and quantum information.

Protests against textbooks on trans persons in America and against a reading hour by drag queens in Rotterdam: it has been raining protests recently against people with a gender expression that does not match their birth sex. Why does this evoke such resistance? We asked Professor by special appointment…

What role does the frontal lobe play in understanding sentences? Assistant professor Jurriaan Witteman has received a grant to replicate a leading study on this question. ‘As there is some doubt about the reliability of existing neuroimaging results, it’s important to replicate influential studies.’

Prof. Jaap van den Herik was a guest in the latest episode of the Nationale Data Podcast.

Data science offers great opportunities for legal research, according to Simone van der Hof and Bart Custers (eLaw). But at the same time, we have to keep an eye on the unwanted side effects of big data - such as ethnic profiling.

PhD defence

Alumni event, Lezing

PhD defence

PhD defence

External PhD Candidate Liselore Tissen was interviewed by Leiden Global about her work, in which she uses 3D printing. Recently she made a copy of a decorative human skill this way.

Nature News reported on the use of bow-and-arrow for hunting based on the research made on small points found in a 54,000-year-old cave site in southern France.

VVIK Lecture

The D66 proposed bill on Ending Life with Dignity is inadequately substantiated and contains contradictions. This is the view expressed by Professor of Political Philosophy Paul Nieuwenburg in his inaugural lecture on 17 March.

How can legal education in Indonesia become more relevant for supporting the rule of law and providing legal services that common citizens need?

The Leiden Leadership Programme (LLP) employs experts in the field of leadership. They equip LLP students with the necessary leadership knowledge, insights and skills to increase their social impact.

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.’

On 27 September 2019, Bart Schuurman, Assistant Professor at the Institute of Security and Global Affairs spoke to Dutch regional newspaper 'de Gelderlander' about the decline in attention for jihadism.

JUSTREMIT is an ERC-funded project that brings together political theory, ethnography, and security studies in an interdisciplinary study of remittances and global justice.

Three new minors at the intersection of security and resilience will launch in September 2026 at the Faculty of Governance and Global Affairs. A distinctive feature is that all three combine academic coursework with a practical placement in the field, within defence, the police, or emergency service…

From 26 August until 5 September 2019, a group of 20 Chinese government officials, industry representatives and academics attended an intensive course on space law and policy at the International Institute of Air and Space Law, organized in cooperation with Avans+ in Breda.

Turnaround Wing of INSOL Europe and Leiden Law School are working on the design of ‘guidelines for out-of-court turnaround professionals’. The project was approved by the Council of INSOL Europe at its 2014 conference in Istanbul and subsequently started in November 2014.

The Laboratory for Human Osteoarchaeology specialises in the macroscopic and microscopic analysis of human remains. We use cutting edge scientific approaches to address archaeological, historical, and anthropological research questions. In addition to paleopathological, histological, and 3D scanning…

The sustainable business law research group is dedicated to researching the complex relationship between business activities and sustainability. It strives to develop legal solutions that contribute to a more ethical, just, ecologically responsible and socially inclusive society. Our aim is to develop…

The making of sacrifices seems part and parcel of any elite sportsperson’s life. Remarkably, the insights that we find in the current literature in social sport studies are not able to make sense of the references to sacrifice in the data that emerged in the context of this study on the social significance…

LCCP is envisaged as an open space for stimulating discussion, critical debate and inventive co-operation in the Dutch philosophical community. It does not pursue a specific agenda but welcomes different readings of our shared philosophical situation, because it believes that deeper understanding is…

Highlights the extent to which the two thinkers share a common philosophical framework, while also demonstrating how Levinas shifts the orientation of philosophical thinking from truth to justice.

The Public Administration specialisation in Digitalisation, Governance and Society prepares you for a future where digital issues and governance are intertwined. You will learn how to translate developments like AI into concrete policies and work responsibly with technology in public administration.

How do individuals make decisions? What determines the quality of group decisions? When and why do people cooperate with others? How does intergroup competition evolve?

The Cyber Security Governance research group contributes significantly to the educational programmes at Leiden University. By integrating cutting-edge research into the classroom, we ensure that students engage with the latest developments in the field of cyber security, governance, and ethics.

In the fall of 2021, Cleveringa professor Roméo Dallaire and world experts shared their thoughts about PTSD, children’s rights, war crimes, humanitarian law, and peacekeeping in a series of conversations about leadership and moral dilemma during times of conflict and crisis.

Hybrid Intelligence (HI) is the combination of human and machine intelligence, expanding human intellect instead of replacing it. HI takes human expertise and intentionality into account when making meaningful decisions and perform appropriate actions, together with ethical, legal and societal values.…

Explore philosophical research and education at the Leiden Institute for Philosophy. Our scholars study knowledge, ethics and existence, connecting classical and contemporary thought.

Operators in the Lexicon opens with an old chestnut: why are there no natural single word lexicalizations for negations of the propositional operator and and the predicate calculus operator all: why neither *nand nor *nall?

Our scientists working with laboratory animals undergo training on animal experiments. In this training, researchers learn how to handle laboratory animals responsibly. Read more about the requirements we set for researchers working with laboratory animals.