In the Master's programme Crisis and Security Management, you will study contemporary security challenges from both local and global points of view, gaining a deep understanding of the ‘wicked problem’ of security and crisis topics in a complex and globalising world.

Whether you continue to live in Europe or move abroad, the LL.M. International Financial Law prepares you for a successful career in a constantly growing global field.

What did colonial officials and missionaries think they were doing?

Do offshore windfarms affect the local biodiversity of the pelagic fish community and are fish deterred or attracted by sounds?

The Developmental Psychology specialisation of the Research Master’s in Psychology offers a strong theoretical background to provide the varied knowledge-base needed for a thorough understanding of emotional and cognitive development across childhood and adolescence.

From lectures by Robbert Dijkgraaf to a telescope on the ocean floor: during his double bachelor’s in Physics and Astronomy, Jelle Oonk discovered that the path to big cosmic answers sometimes runs through the smallest, hardest-to-catch particles—neutrinos.

Speculation about alien life, a new nitrogen map, AI as a thesis supervisor, groundbreaking telescopes and multi-million-euro investments to combat antimicrobial resistance – the diversity of these topics shows that our readers are just as broadly interested as our researchers. Discover the most-read…

On Wednesday, September 17, 2025, Prof. dr. Sarah Cramsey convened a book manuscript event at the “beach” in Wassenaar near Leiden to discuss her new book 'Caring through Catastrophe: Jewish Children and their Caretakers during the Holocaust' which is under contract with Indiana University Press.

What makes young people susceptible to misinformation? And how do their friends influence this? Psychologist Jiemiao Chen aims to find out by using eye-tracking to monitor where young people focus their attention while watching TikTok videos.

An international team led by Leiden astronomers has taken the first-ever image of a young, Sun-like star accompanied by two giant exoplanets. The researchers used The European Southern Observatory’s Very Large Telescope for this, known as ESO’s VLT. Images of systems with multiple exoplanets are extremely…

Toch kan je volgens dr. Jelle van Buuren dader Tobias R. niet in een bepaald hokje plaatsen. Van Buuren is kenner van het rechts-extremisme en reageert in het Reformatorisch Dagblad op de passages van Tobias R.

After years of development, the moment has finally arrived: a massive cryostat, a highly advanced freezer that keeps the sensitive components extremely cold, has arrived in Leiden from Zurich. The device is the largest component of METIS, one of the first instruments for ESO’s Extremely Large Telescope…

Terrorism expert Bart Schuurman has been appointed professor. As a researcher and lecturer at ISGA, he has witnessed the terrorist threat evolve and broaden. 'How can we explain these shifts and protect our society against them? That is what I want to focus on more,' he says.

‘Countering violent extremism – the international deradicalization agenda’ is the name of the book Tahir Abbas published last month. In this interview the associate professor in Terrorism and Political Violence at ISGA tells about the backgrounds and goals of the book.

Hoogleraar Radicalisation Studies Tahir Abbas wil mensen er bewust van maken dat radicalisering voortkomt uit hoe wij als mensen samenleven

Dirk Huyge (Director) & Wouter Claes (Vice-Director)

In 2022, Leiden will be the European City of Science. University lecturer Jaap de Jong has created special assignments for the journalism master's students to celebrate this: they will go into the city to visualise knowledge from the city.

On 28 February, Marieke Liem, Associate Professor at the Institute of Security and Global Affairs, appeared as a guest on the Dutch NPO Radio 1 Brainwash Podcast to discuss the 'big homicide questions' she is trying to find the answers to.

Is it possible to measure subtle oscillations caused by dark matter moving through the earth? A Dutch-American physicist team have discovered a new route toward what could be the first-ever measurement of ultralight dark matter. They suspended a microscopic magnet inside a superconducting enclosure,…

Evaluations of a most challenging year to both staff and students in terms of teaching and education support have turned out remarkably well. Although we had to switch to online education almost overnight, we pulled it off!

Tahir Abbas was named full professor of radicalization studies by the Executive Board. This chair, according to Abbas, is an excellent opportunity for ISGA to broaden its current focus on terrorism and political violence. Abbas was interviewed about his ambitions, writing as a form of relaxation, and…

It was already known that social anxiety disorder often affects more than one person in the same family. But research by PhD student Janna Marie Bas-Hoogendam has now shown that there are genetic brain characteristics that are associated with social anxiety. The PhD ceremony will take place on 14 Ja…

The habitats of freshwater fish species are threatened by global warming, mainly due to rising water temperatures. This is the conclusion of a study led by Radboud University, in collaboration with Utrecht University, PBL Netherlands Environmental Assessment Agency, Leiden University and others. The…

PhD candidate Layla van Wieringen examined how extremist beliefs are passed on within households. In her dissertation ‘Rotten Trees, Bad Apples? Understanding the Intergenerational Transmission of Extremism’, she reveals a reality that media and politics rarely address.

By Marieke Liem and Frans Koenraadt. Domestic homicide constitutes an extreme type of interpersonal violence. This book offers a much-needed synthesis of the literature on domestic homicide, covering its history; the theories supporting it; its various forms such as filicide, intimate partner homicide,…

Jeugdhulpinstanties zijn ernstig tekort geschoten bij hulp aan het mishandeld pleegmeisje uit Vlaardingen, blijkt uit nieuw onderzoeksrapport. Hoogleraar jeugdrecht Mariëlle Bruning schoof aan bij Nieuwsuur: ‘Het gaat om extreem menselijk falen.’

The design process of new buildings is extremely complex due to strict requirements. Computer models are used to create the designs. Scientists from LIACS developed advanced algorithms that help their colleagues at Eindhoven University of Technology to optimise these models.

It is theoretically possible that habitable planets exist around pulsars, rotating neutron stars. Such planets must have an enormous atmosphere that convert the deadly X-rays and high energy particles of the pulsar into heat. That is stated in a scientific paper by astronomers Alessandro Patruno and…

Leiden physicists Tjerk Oosterkamp and Dirk Bouwmeester have received a 1.3 million euro Science-Groot grant from NWO to catch a mystery at the core of quantum mechanics, together with Amsterdam physicist Jasper van Wezel.

As Director-General of the ESO for the past ten years, Leiden University astronomer Tim de Zeeuw had ‘the best astronomy job in the world’. Back at the Leiden Observatory, he is focusing on the first 3D map of the Milky Way.

Minuscule elementary particles from space colliding with Earth can give us an insight into the distant objects they come from. But first, you need to know how to catch them. With a Vidi grant from NWO, researcher Sjoert van Velzen will 'hunt' for neutrinos coming from exploding black holes.

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.

Five projects with researchers from Leiden University have received a grant from the Dutch Research Council (NWO) to build or upgrade existing research facilities.

We are extremely proud to have won the Excellent Aerospace Education Award of the NLF (Netherlands Aerospace Foundation) for 2017.

Following current regulations regarding the attempts to constrain the effects of the Corona virus outbreak, the University of Leiden has cancelled all physical forms of teaching until 6 April. As conference organisers, we will use this period to consider how to proceed with the conference. In the most…

The staff of the Master of Laws: Advanced Studies in International Children’s Rights is extremely proud.

The night side of exoplanet WASP-43b, to the surprise of astronomers, does not appear to contain methane. It is likely that extreme winds do not allow enough time for methane to form in detectable amounts. This is the conclusion of an international team of scientists, with Leiden and Amsterdam contributions,…

Wars, climate change and the effects of covid have caused a global decline in children’s well-being. In her inaugural lecture Ann Skelton, Professor of Children’s Rights in a Sustainable World, points to the disastrous effects of multiple interacting crises.

Every semester, LUCIS invites a scholar to Leiden to provide a lecture series on a topic of their choice. With these lectures, we aim to present state-of-the-art research in Islamic studies to the Leiden academic community and beyond, and to offer students and junior researchers the opportunity to get…

The third project, worked on by dr. Rina Knoeff, is a synthesising project directed at studying the Leiden anatomical collections as important parts of ‘public history’. It will use the results of the other projects in order to analyse anatomical collections (their focus, significant silences, audiences,…

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

The ties between Leiden University and South East Asia, especially Indonesia, have been strong for centuries.

The Secular Outlook describes what moral and political secularism means. It paints the image of a world view in which state and religion are kept well separated.

In the large gas clouds between the stars, chemical reactions take place under extreme conditions, giving rise to both small molecules, such as water and common salt, as well as large complex molecules that can serve as the building blocks of life. This is known as astrochemistry and it is something…

Kim Stroet is examining how the interaction between teachers and pupils influences pupils’ motivation. ‘Children need to have the feeling that they are in control of their own learning process.’

This project will construct an inventory of possible conceptions of the resistance of the world to scientists’ claims and theories.

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This is an Erasmus+ International Credit Mobility project of the Faculty of Humanities with two partners in Uzbekistan.

The Journal of Global Slavery (JGS) aims to advance and promote a greater understanding of slavery and post-slavery from comparative, transregional, and/or global perspectives. It especially underscores the global and globalizing nature of slavery in world history.