On Tuesday 30 April 2024 Jonny Russell successfully defended a doctoral thesis and graduated.

The enormous adaptability of the cholera bacterium explains why it is able to claim so many victims. Professor Ariane Briegel from the Leiden Institute of Biology has now discovered that this adaptability is due to rapid sensory changes in the bacterium. Publication in PNAS.

Professor of Health Psychology Andrea Evers is one of the coordinators of the national Health and Wellbeing programme and of the Leiden-Delft-Erasmus (LDE) programme that goes by the same name. The aim is to use technology to promote our health. LDE has already been working on this topic for some ti…

Are disturbances to the brain, such as Alzheimer's or autism, linked to specific defects in the underlying communication networks in the brain? If this is the case, subtle changes in the networks can act as a marker for brain disturbances. Neuroscientist Serge Rombouts will be investigating this, together…

This article explores how to think about solidarity, considering the diverse stories, spaces, practices, bodies, and temporalities that shape a city.

What can we learn from how maritime conflicts were managed in the past? What significance did Maritime Conflict Management have in shaping the standards of diplomacy and international law in pre-modern Atlantic Europe (1200-1600)?

Maritime conflict management is the regulation of conflict in relation to the sea. It comprises conflict enforcement, conflict resolution and conflict avoidance. How did victims of maritime conflicts claim and obtain damages or demand compensation or reparation?

La naissance d’une thalassocratie considers the contribution of the Burgundian and Habsburg Netherlands to the rise of the Dutch Republic as a maritime power. In Braudelian fashion, its chapters follow three lines of research.

Because of the overarching shadow of ‘the state’ in all things diplomatic, traditional diplomatic history has neglected the study of any actors in foreign relations other than state diplomats, such as ambassadors.

Five talks will be given during the Leiden Science Family Day: two children's lectures and three lectures for adults. Will you be there ?

This book explores the links between maritime trading networks around Europe, from the Mediterranean and the Atlantic to the North and Baltic Seas.

Who had a say in making decisions about the natural world, when, how and to what end? How were rights to natural resources established? How did communities handle environmental crises? And how did dealing with the environment have an impact on the power relations in communities?

This book is a result of the collective research project Urban Societies in the Port Towns of Atlantic Europe in the Late Middle Ages. It studies the connections between diplomacy and trade from a comparative and transnational perspective throughout medieval Atlantic Europe.

The central subject of this dissertation is the influence of Fichte’s theory of self-consciousness on Søren Kierkegaard's philosophical notion of the self in the way Kierkegaard describes the self in his philosophy in the writing 'The Sickness unto Death' (1849). The main question this dissertation…

Searching for ways to delay the need for a transplant and trying to build kidneys to order.

If you wish to know exactly what is going on in a healthy or sick human body, and at various levels such as molecule, cell, tissue, organ, larger systems and a person as a whole? Do you wish to learn how to do research which contributes to diagnoses, treatment and prevention of diseases? Then the bachelor…

This study documents and translates the Saa (Zapotec) cultural heritage of the Bene’ Ya’a/En’ne I’ya peoples, the Zapotec inhabitants of the Sierra Norte of Oaxaca.

List of Support Departments at LION and the Faculty of Science

This book investigates how the rulers of the Habsburg world empire developed and implemented a central maritime policy for the Netherlands and appointed an admiral of the sea or admiral-general for that purpose.

In 1940 the Germany occupiers ordered the dismissal of all Jewish staff of the university. This resulted in protest speeches by fellow academics.

Pre-modern long-distance trade was fraught with risks which often created conflicts of interest. The ensuing disputes and the ways the actors involved dealt with them belong to the field of conflict management.

The EG track is built on the foundation of MPA courses in which you gain understanding of the complexities of public institutions and acquire advanced academic skills. Specialisation courses focus on the welfare state, markets and competition, and political economy.

Leiden LIS Budget Incidence Fiscal Redistribution Dataset on Income Inequality (2017), assembled by Jinxian Wang and Koen Caminada (Version 1, November 2017), presents the disentanglement of income inequality and the redistributive effect of social transfers and income taxes in 47 LIS countries for…

Leiden LIS Budget Incidence Fiscal Redistribution Dataset on Relative Income Poverty Rates (2019), assembled by Koen Caminada and Jinxian Wang (Version 1, February 2019), presents the disentanglement of relative income poverty measurers and the anti-poverty effects of social transfers and income taxes…

Throughout your 3-year Security Studies programme you explore the effects of events (such as war or natural disaster), understand them via relevant academic perspectives, and actively design strategies and solutions to resulting security challenges.

Leiden’s Institute for History has an exceptionally strong expertise in Medieval European History, with specialists whose interests cover virtually the whole continent.

The Psychology Research Seminars are organised by and for institute staff. They offer an opportunity to share knowledge, gain new insights, and meet colleagues from various disciplines.

On the basis of the characteristic aspects of a picture, certain computers can tell us what the picture is showing. They can learn this in the same way that young children are able to learn to recognize images. Further improving these techniques opens the way to a whole range of new applications. Biology…

In 2020, Leiden University launched its stimulated interdisciplinary programs, including one focused on regenerative medicine.

The chemical industry must continue to innovate for a more sustainable, healthier society. The reseachers from the Leiden Institute of Chemistry (LIC) contribute by applying their knowledge to themes such as sustainability, energy and health.

Lecture, Blue History Network Graduate Forum

Richard Chancellor, the English Willem Barentsz, discovered the North Cape during the first English expedition to attempt to find a northeast passage. But the ship, the Edward Bonaventure, was ‘robbed by Flemings on its return in 1554.’ Historian Louis Sicking and legal expert Remco van Rhee found the…

From the late Middle Ages onwards, maritime conflict has developed hand in hand with international trade. Over time, specific institutions were established to address disputes arising from violence or mishap at sea and in coastal areas. Conflict resolution at sea has mostly been studied through the…

Morgen debatteert de Tweede Kamer over het nieuwe stelsel arbeidsongeschiktheid. Het stelsel is vastgelopen en dringend aan hervorming toe. Barend Barentsen, hoogleraar Sociaalrecht, bespreekt het onderwerp in het Leidsch Dagblad.

On March 28th, the book "Elke provincie een eigen gouden eeuw" (Each Province Its Own Golden Age), edited by Louis Sicking, will be released by Prometheus Publishers. Twelve authors each examine a province in detail and focus on an aspect of its history whose significance extends beyond the region i…

Claire Weeda, Robert Stein, and Louis Sicking have published a collection of essays in honour of Em. Prof. dr. Peter Hoppenbrouwers - also the former Scientific Director of the Research School of Medieval Studies. The contributions can be consulted freely online.

Leiden PhD candidate and vet Luc Janssens discovered that a dog found at the start of the last century in a grave dating back 14,000 years had been sick for a long time and had been cared for. He and Thijs van Kolfschoten were interviewed by National Geographic about this discovery.

Health is a wonderful gift, both for humans and for society. If we are able to prevent both physical and mental illnesses, we can spare a lot of suffering and fight rising health costs. Social scientists and physicians in Leiden are working closely together to conduct research on the human mental, behavioural…

Mazatec chants and ancient Mesoamerican pictography

Psychological processes have a major effect on the course of a disease and the effects of medical treatment. Researchers in the field of Psychoneurobiology examine the interactions between body and mind. They investigate the effects of stress as well as the effect of placebos and nocebos, which can…

Leiden Budget Incidence Fiscal Redistribution Database (2011), assembled by Chen Wang and Koen Caminada (Version 1, August 2011), presents the disentanglement of income inequality and the redistributive effect of social transfers and taxes in 36 LIS countries for the period 1970-2006.

In autoimmune diseases such as rheumatism and diabetes the immune system attacks autologous proteins. Leiden researchers are trying to discover how this comes about.

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The organisations and people who implement government policy face many different types of change. Academics from Leiden University research how they deal with these and advise them on how best to meet the needs and wishes of society.

Louis Sicking's Maritime Conflict Management in Atlantic Europe was awarded an 'Internationalisation in the Humanities' grant from NWO. What can we learn from how maritime conflicts were managed in the past?