Complex Organic Molecules (COMs) have been detected in objects across different stages of stellar evolution.

On the 9th of April, Manolis Fragkiadakis successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Manolis on this achievement!

Fieldwork is an essential part of this research and of course this part of the project is also a joint effort by citizen scientists and professional archaeologists. Discover when fieldwork will take place and how you can participate.

My work is motivated by the necessity to extend Standard Model of Particle Physics in order to explain three observed phenomena that this great theory fails to accommodate

One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.

Promotores: Prof.dr. B.R. Katzy, Prof.dr. K. Sailer (Munich University)

This thesis investigates Søren Kierkegaard’s place in Martin Heidegger’s first Freiburg period lecture courses.

In September 2023 Social Justice Research, a journal from Springer Nature, published a ‘Special Issue on Veteran Reflections’. Eight ‘veterans’ analysed the current status of justice research and suggested new directions and refinements. Herman Steensma, guest member of the section Social, Economic…

With our research and teaching, we help make the world a better place. We join in the academic and public debate, and seek answers to economic and social issues – not just at the local and regional level but at the global one too.

A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.

Newly published: ‘Background to Beakers’; inquiries into regional cultural backgrounds of the Bell Beaker Complex. Harry Fokkens / Franco Nicolis (eds.).

Are you graduating at the Faculty of Science? Or are you supervising a PhD student? At the Graduate School of Science you find support at every phase of your PhD.

Slavoj Žižek is one of the most prominent public intellectuals of the left. His central claim holds that “today, it is more crucial than ever to continue to question the very foundations of capitalism as a global system”.

The Faculty of Governance and Global Affairs

This work focuses on the interpretation of the archaeological remains of the Mixtec culture in Southern Mexico on the basis of the knowledge, perceptions, economy and worldview of contemporary descendant communities.

Have you not yet had the chance to sign your signature on the walls of the Sweat Room? Or would you like to pay a digital visit to the famous room?

Promotor: A. Achúcarro, Co-promotor: A. Boyarsky

Challenges for the protection of traditional knowledge and genetic resources, traditional cultural expressions, and traditional knowledge of indigenous peoples in the international scenario.

Why do some parties fail to settle conflict, even after long periods of fighting? ISGA PhD candidate Valerie Sticher suggests that costly concessions often stand in the way of a negotiated agreement. Conflict party members not only care about their in-group's welfare, but also want to avoid rewarding…

This project introduces primary school children (8-12 years) to science and archaeology.

An examination of rationales and core practices of first-grade Worldview/Religious Education teachers focused on their students' philosophical identity development

Design of a Linguistic System for Interstellar Communication Based on Logic

The master’s programme 'Jeugdrecht' considers topics like child abuse, child refugees, bullying via social media, adoption and divorce and aims to make a difference in the lives of the youngest members of our society.

The main goal of the THEOR CHEM group, headed by Prof. Geert-Jan Kroes, is to characterize, and to accurately predict the outcome of chemical reactions at gas-solid and liquid-solid interfaces. Here the solid surface is typically a metal or an ice surface. These goals are important to many areas in…

Advancing AutoML systems targeting machine learning tasks based on Earth Observation (EO) Datasets.

A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.

Up to 50% of all children and adolescents growing up worldwide are exposed to at least one form of childhood adversity (CA), which is one of the strongest predictors for later-life psychopathology.

A new research line is the development of liquid biopsy fingerprints to predict early Alzheimer’s disease (AD) stage in human in readily accessible body fluids in human (in collaboration with: Dr. Geert-Jan Groeneveld, CHDR; Prof. Elga de Vries, Free University Medical Center; and others).

The Computer Systems, Imagery & media (CSI) research programme performs research on methods and techniques for the design, implementation and application of advanced computer systems, in particular parallel, distributed and embedded computer systems.

Promotor: Prof.dr. J. Memelink

We highly advise you to register with a GP in Leiden or The Hague before arrival or soon after you get here.

Firearms and violence in Europe–A systematic review by Katharina Krüsselmann, Pauline Aarten, Marieke Liem

Are you interested in developments in society? In a conflict, do you prefer searching for a compromise rather than giving a judgement? If so, Notarieel Recht is the right study for you.

Career and apply for jobs

Clinical development of drugs for central nervous system (CNS) disorders has been particularly challenging and still suffers from high attrition rates.

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Promotor: Prof.dr. W.T.F. den Hollander, Prof. dr. E.A. Verbitskiy

The post-PhD phase is discussed during the many formal and informal meetings PhD candidates have with their supervisors. However, there are also various online sources, workshops and events available to PhD candidates to better prepare for the next step.

The programme consists of 60 EC to be completed in one year.

Strengthening nature and at the same time investing in future-proof agriculture. That is the task of the Minister for Nature and Nitrogen, Christianne van der Wal. It is also the lifework of Leiden professor Jan Willem Erisman. He has been researching nitrogen for his entire career and has shown that…

PhD defence

PhD defence

The civil lawsuit against the Congregation of 'Onze Lieve Vrouw van Liefde van de Goede Herder' starts this week. A total of 19 women, aged from 62 to 91, together with the women’s rights foundation Clara Wichmann wants recognition through the courts that there was a situation of forced labour at youth…

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.’

Data Science & AI student Nataliia Bagan combines a passion for mathematics, language, and artificial intelligence. Her exceptional bachelor’s thesis on improving reasoning in large language models earned her a nomination for the Leiden Science Young Talent Award 2025.