Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.

On 20 June, Anne Hendrikx defended the thesis 'Methods of contract interpretation: a model for the interpretation of a contract'. The doctoral research was supervised by Henk Snijders.

To achieve a more consistent and professional look in our scientific posters. A new template has been chosen. This design and its principal elements can be downloaded here.

Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…

Planets are formed in disks of gas and dust around young stars.

This volume publishes the proceedings of the eleventh annual University of Chicago Oriental Institute Seminar. It uses the sphere of legal institutions as a prism through which to consider gender relations in the ancient world, both in the Near East and beyond. It examines how similar issues were manifested…

Every organisms in the tree of life faces the same challenge: the length of its DNA exceeds the volume of the cell it needs to fit in. Several strategies have evolved to solve this problem, one of them being the expression of proteins that bind and organize the DNA.

Promotores: Prof.dr. A.G.G.M. Tielens & Prof.dr. L. Kaper (UvA)

This dissertation provides a novel perspective on the interaction between quantifier scope and ellipsis. It presents a detailed investigation of the scopal interaction between English negative indefinites, modals, and quantified phrases in ellipsis. One of the crucial observations is that a negative…

Syntacticians study how words combine into larger units (phrases and sentences) in human languages and how the combinatorial possibilities determine word order and grammatical relations between parts of a sentence.

Painstaking research in Dutch and Portuguese archive materials, so far poorly assessed on the topic of social relations, reveals intense and intricate associations between different European individuals both in terms of ethnicity and social strata.

On 5 September, Elize de Mul defended the thesis 'Digital Döppelgangers: identity in the Culture of Imagination'. The doctoral research was supervised by Simone van der Hof and Esther Keymolen.

Ms. Monica Klasing Chen defended her thesis on 16 December 2020

Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.

Understanding the nature, characteristics and function of the secular vocal intabulations and dances found in Italian printed keyboard sources in the 16th century

On 13 December 2018, Stijn Voskamp defended her thesis 'Onderwijsovereenkomst'. The doctoral research was supervised by Prof. mr. A.G. Castermans.

This research delves into a region of space known as the interstellar medium (ISM), which is essentially the area between the stars filled with gas and dust.

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

Lecture

This thesis investigates the grammar of Sheko, an Omotic language spoken in southwest Ethiopia.

This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…

Supervisor: P.J.J. Hooykaas

From fake news to COVID-19 conspiracies, debates about truth claims have become more prominent during the past decade. Taking a global, comparative perspective, the minor Disinformation and Strategic Communication in Global Media focuses on the broad spectrum of contested narratives subsumed under the…

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

Jeff Fynn-Paul, lecturer at Leiden University’s Institute for History, was recently awarded the European History Quarterly’s 2016 Prize for his article “Occupation, Family, and Inheritance in Fourteenth-Century Barcelona: A Socio-Economic Profile of One of Europe’s Earliest Investing Publics.”

New PhD opportunity at University of Amsterdam in 'Intercultural Contact and Identity Formation in Premodern Frontier Zones'. Deadline for application: 15 April 2025

It is more myth than reality that people with migration backgrounds commit more crime. Leiden has successfully tackled anti-social behaviour by Moroccan youths, says former mayor Henri Lenferink. Good education forms the basis of a healthy and safe society, says ‘crimmigration’ researcher' Maartje van…

Could water be present in planet-forming disks before the formation of rocky planets? The James Webb Space Telescope may have found evidence for that. Webb has for the first time observed water in the inner disc around young star where at greater distance, giant planets have already formed. The research…

The Human Origins group at Leiden University studies the archaeology of hunter-gatherers, from the earliest stone tools in East Africa, more than three million years old, to the origin of sedentary societies towards the end of the last ice age.

In the past decade many academic journals have started to require that researchers provide evidence of ethical review when submitting papers, for example when working with human participants or human remains.. In order to support researchers to ensure their projects are able to meet these expectations,…

A new administrative culture. Renewed vigour. More transparency. Will it become reality with the new government? And how do you go about achieving it? By all of us striving to change together: not just politicians, but also stakeholders, civil servants, media, and civilians. That was the conclusion…

Gathering and distributing patient data can make an important contribution to containing the coronavirus. But if we want to be successful, we need better data. With this objective in mind, Leiden data stewards have joined the Virus Outbreak Data Network (VODAN).

The NWO just announced the results of the Vrije Competitie proposals. Paul Smith, professor at the French department is, as a member of LUCAS, one of three scholars within the Faculty of Humanities at Leiden University who has been awarded this grant.

On the new website Athena’s Angels, four female Leiden professors address the unequal treatment of women in academia. ‘Since we launched the website, our mailboxes have exploded,’ says Judi Mesman, Professor of Child and Family Studies and one of the initiators.

On Saturday 19 November 2016 the students (9 – 12 years old) and several parents of the Transvaal University visited the Leiden University College (LUC) The Hague. The aim of the visit was to get acquainted with several scientific issues in an interactive session.

The Municipality of The Hague called on researchers to come up with a proposal for an innovative research project on problems big cities face such as energy transition. Four of the five projects that have been granted funding come from researchers from Leiden University.

De Faculteit Governance and Global Affairs (FGGA) heeft een facultair team opgesteld om invulling te geven aan Academia in Motion (AiM).

The Leiden Faculty of Archaeology has recently launched its own research blog. In the Leiden Archaeology Blog, our researchers share their activities with peers and the general public.

The third edition of the International Leiden Leadership Programme (ILLP) has kicked off with a successful opening seminar at the Sterrewacht.

Mariana Françozo has been awarded a Starting Grant by the European Research Council. With this 1.5 million euro grant Dr. Françozo and her research team will investigate the transformation of the knowledge of diverse Brazilian indigenous peoples into a body of knowledge that became part of the Western…

Struinen in het historische centrum, de faculteit ontdekken en natuurlijk chillen aan het strand. Honderden eerstejaars leren in de HOP-week elkaar en hun nieuwe stad kennen. Voor veel studenten is de week een 'gamechanger'.

A new academic year means new courses. And that inevitably requires all sorts of new skills: academic writing, searching for sources, setting up a research project... The Science Skills Platform is packed with useful information. This way, you can easily help your students on their way.

Armed with sunglasses, a thick layer of sunscreen and several bottles of water, over 3,300 students have arrived in Leiden for their introduction week. The start of the 55th EL CID happened to be on the hottest day of the year.

Smiling faces, a mass dance and a bit of awkwardness: after two ‘corona editions’ of EL CID, the Leiden introduction week is back with a vengeance this year. A total of 3,412 first-year students from Leiden University and University of Applied Sciences Leiden, accompanied by 486 mentors, started EL…

Land van Ons, a cooperation that buys agricultural land for the restoration of biodiversity and landscape, and Leiden University join forces. Together, they will investigate over a longer period of time which agricultural management leads to the best restoration of biodiversity. The research will start…

Some children start life with a disadvantage. Sometimes even before they are born. A new research project involving Professor Wessel Kraaij of Leiden University investigates how data science can help give these children a good start in life.