We investigate water quality and want to understand the effects of human interference on aquatic biodiversity.

The overall objective of ECS is to widen and strengthen the European Citizen Science community through capacity building and awareness raising activities such as the creation of a European Citizen Science Academy and the establishment of a network of 28 ECS Ambassadors.

The Mathematical Institute is responsible for the research and education in mathematics and statistics at Leiden University.

Now and then we organise book launches to present the latest publications, both academic and popular, in our broad field.

Research at the Leiden Institute of Physics (LION) is foundational and curiosity driven. All our scientists share a desire to increase the knowledge of the world around us, in an open atmosphere of inquiry from which innovative ideas emerge that provide applications and value for society.

The specialisation in European Union Studies offers students an opportunity to study the processes of European integration from a multi-disciplinary perspective and combines academic excellence with practical insights into the processes of policymaking in Europe.

Our Mission: To optimize human well-being within the constraints of planetary boundaries through innovative research, education, and partnerships that advance sustainable production and consumption. We strive to remain global leaders in developing and applying systems-based approaches, methodological…

The Mathematics master’s programme provides a solid theoretical foundation and prepares you to work in multidisciplinary and international environments. With a Leiden Mathematics degree, you’ll have the tools to pursue opportunities worldwide in research, industry, and beyond.

The Mathematics and SCS master specialisation gives you the opportunity to combine Mathematics research with different aspects of science communication.

Cooperation with Latin America aims to build on the long-standing relation that Leiden University has with multiple partners in the region.

Material Crossovers

The Cognitive Psychology Unit has two main research lines, which focus on basic cognitive (neuro)science and applied cognitive psychology.

This dissertation aims to provide a critical view of Vietnamese secondary school stakeholders’ awareness of democratic education regarding the core educational democratic values and democratic acts within either the ‘physical’ or digital learning environment.

This is an Erasmus+ International Credit Mobility project of Leiden University with the American University in Cairo.

Explore the MSc in International Politics at Leiden University: a one‑year programme focused on international conflict, crisis management, diplomacy and global cooperation.

The two-year research programme Applied Mathematics offers courses at an advanced level. There is a large degree of freedom in choosing one’s own topics. Some of the courses are given at national level, in the Dutch Mastermath programme. The programme concludes with the preparation of a master’s the…

The specialisation in Global Political Economy provides you with a rigorous understanding of the global political economy and the different approaches to its study.

How can we assist Universitas Indonesia's department of International law to improve their educational and applied research programs on Transnational Law, Asset Recovery and International Investment Arbitration, with an eye on Indonesia’s security and rule of law reform agenda and the needs of the…

A warm welcome to the Graduate School of Social and Behavioural Sciences at Leiden University.

The project’s overall goal is to improve Indonesia’s environmental legal framework and its implementation by strengthening the regulatory capacity of the government, and by enhancing the capacity of CSOs and scholars to hold the government accountable for its regulatory performance.

Our goal is to prepare you to make a difference in your future career.

Research at the BIOSYN group is comprised of the following research themes:

The aim of the Scholars for Scholars Fund is to build a sustainable support infrastructure at Leiden University for researchers affected by war and unrest.

Lecture, Descriptive Linguistics Seminars

Leiden University, together with Utrecht University, the LUMC and 10 other Dutch universities and institutes, has been awarded a grant of more than €30 million in the NWO call Roadmap Large-scale Scientific Infrastructure (GWI).

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…

Karwan Fatah-Black and Lauren Lauret are co-authors of Geketend voor Hollands Glorie (The Chains of Holland’s Glory) that studies the political and economic connections between South Holland and slavery. The findings of this research will be presented with Dr. Joris van den Tol (Radboud University)…

Specially for an experiment conducted by Leiden University, public administration experts and water authority officials came together in a laboratory.

Studying as an asylum seeker without a residence permit. Every year, student initiative IncLUsion enables dozens of asylum seekers to take several courses at Leiden University. ‘Education has given me a lot of support.’

What happens if you are an academic forced to flee your home country and find yourself here in the Netherlands with practically nothing? The Hestia scheme offered by the Dutch Research Council (NWO) gives refugee scientists the opportunity to resume their academic career in the Netherlands. The scheme…

The European Physical Society has awarded the prestigieus Edison Volta Prize to Leiden physicist Michel Orrit. The prize is handed out every two years to an individual or a group of at most three scientists as an acknowledgment of an outstanding achievement in physics research.

When migrating from China to Siberia, a few intermediary food stops are not a luxury. For migratory birds, they are even crucial for their survival. However, climate change is altering the seasonal availability of food at these stops. Environmental scientist Yali Si has discovered that because of this,…

Funded by a ZonMw grant, the LUMC and the Health Campus The Hague will be working with headache patients on research into the use of an electronic headache diary. This resource can help patients gain a better understanding of their migraine attacks and, together with the physician, produce the best…

Primary-school teachers who aren’t Muslim themselves but do have Muslim children in their class sometimes face dilemmas and cultural or religious differences. The ‘Islam in the Classroom’ course at the Leiden Islam Academy can help them resolve these. A new round begins on 9 September.

Clear information about support services, a well-being self-test and advice on finding a room. YounginLeiden.nl helps students and other young people get started, literally and figuratively. Why is this site so desperately needed?

Bioenergy with carbon capture and storage (BECCS) is a promising method for removing carbon dioxide (CO2) from the atmosphere and simultaneously generating energy. Yet this method is controversial, as it may require a great deal of land and water. Researchers at Leiden University have now proposed a…

A moon rock from the Apollo 17 mission, antique globes and the cosmos according to Wassily Kandinsky. Ewine van Dishoeck, Professor of Molecular Astrophysics, has put together an impressive exhibition at Rijksmuseum Boerhaave.

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

Cutting down global emissions of greenhouse gases to combat global warming won’t do the trick alone: we also need negative-emissions technology that can capture carbon dioxide directly out of the air. In the prestigious journal Global Environmental Change, PhD candidate Oscar Rueda and colleagues shed…

All first-year bachelor’s students at Leiden University are assigned to a tutor group, with a student as mentor and a lecturer as tutor. This extra contact is essential during the corona pandemic. The first groups have now met up. We spoke to two mentors from Leiden Law School.

An e-coaching programme helps people with chronic kidney disease, particularly in areas that patients themselves want to work on. ‘A healthy lifestyle is important for patients with kidney disease: it can slow down the loss of kidney function and there will be fewer complications,’ Katja Cardol explains…

The jury of the Africa Thesis Award is delighted to announce that the 2025 prize has been awarded to Yonwaba Matshobotiyana of the University of the Free State, South Africa, with a thesis on Black women's poetry in South Africa.

When parking in reverse, your car skids off just a little, hitting the wall of the parking garage. On the car dashboard, a warning light immediately starts blinking. This technique from new cars can also be used for another purpose, namely in the treatment of Parkinson's disease patients.

And there you are. A couple of suitcases with you, in a new (unknown) country. You've arranged a room in advance. You know which university you're attending. But other than that ... Evert-Jan, master's student in Encyclopaedia and Philosophy of Law, studied at the Université Paris Panthéon-Assas in…

During the HALON hacking competition, 28 teams had one goal: to find as many vulnerabilities as possible in the systems of Dutch higher education institutions. Research software engineer Chris Handy participated on his own and ended up in second place in the category ‘Vulnerabilities found at the highest…

Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…

The ability to collect and interpret huge quantities of data has become indispensable to society and academia. Leiden University is a knowledge and expertise centre for data science that places the emphasis on interdisciplinary collaboration and innovation.

Could ketogenic therapy change the future of autism spectrum disorder (ASD) treatment? Bret Scher sits down with Eline Dekeyster to explore how nutritional ketosis may support individuals with autism and other brain-based conditions.

In the new video series 'The World of Linguistics', alumni and researchers talk about their passion for their field. PhD candidate Meike de Boer knows everything about the word ‘uh’.