One and a half hectares of polder, a large volume of water, and a group of curious researchers from various universities and scientific backgrounds led by ecologist Maarten Schrama. These are the ingredients needed to answer the question: how do water retention areas affect nature, animals, and our…

When children wean off from heavy medication, they often experience withdrawal symptoms. The severity of these symptoms is often difficult to predict. Pharmacologist Bas Goulooze developed a computer model to determine the best weaning strategy for each child. His research has now been published in…

The high number of students that we are used to in the West would never have been possible if Latin were still the language of instruction in our universities. In his PhD defence on 16 September, Bert van Pinxteren will argue that Africa could gain a lot from a similar language switch in secondary e…

Spatial technology such as virtual reality can help patients who have difficulty with spatial cognition, for instance if they keep on losing their way. In her inaugural lecture, neuropsychologist Ineke van der Ham will talk about the importance of avatars, the patient experience and room for innovat…

Scientists regularly appear in the media. They participate in science cafés, write a popular-science book or visit school classes. In that way, they want to convey their knowledge and enthusiasm to society. But do they succeed? To answer that question, a new website is launched, with a toolbox full…

As early as 2030, batteries in electric vehicles could fully meet the need for short-term electricity storage around the world. By connecting them to the power grid they can provide their stored energy, improving energy security and enabling renewable technologies in cleaning the grid.

Ahab Bdaiwi, University Lecturer of Islamic history, religion and philosophy, was received the first Faculty Impact Award. His interest lies in ‘everything that has to do with antiquity’, especially the religious and philosophical ideas that arose at that time. ‘They can move people. And many of those…

Where should you plant ten trees so that as many city-dwellers as possible can enjoy them? If a smart algorithm knows how people move through the city and where there are already trees, it can calculate the optimal solution. Data scientist Mitra Baratchi makes this possible. Her students are now using…

Storing energy is one of the biggest challenges in the energy transition. Hydrogen could be a solution. Chemist Daan den Boer is researching how to make the chemical reaction needed to store energy in hydrogen as cheap and efficient as possible.

In the world of Ancient Greece the interpretation of supernatural signs was a versatile tool to facilitate decision-making. This is the central hypothesis of the PhD dissertation of historian Kim Beerden. Defence on 14 February.

Children are often able to decide for themselves whether they want to take part in medical research. In order to be able to make an informed decision, they need clear information. PhD candidate Ronella Grootens set a good example and created a cartoon story. PhD defence 6 December.

Where exactly on the surface of a catalyst do the chemical reactions occur? Until now, it has always been a challenge to identify the exact locations of these ‘active sites’. In a new article in Nature, Leiden chemists helped their international colleagues reveal new insights into this issue. Their…

Eastern and Southern European countries struggle with ‘brain drain’ as skilled workers move to other EU Member States. Could restricting free movement be a legitimate and lawful way to address this trend? Researcher Martijn van den Brink will investigate the issue.

The Netherlands Organisation for Scientific Research NWO allocates nearly € 19.5 million to a Dutch cluster that contributes to the development of an X-ray camera and spectrograph for the new European space telescope Athena. Leiden Observatory is one of the members of the cluster.

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

An overview of frequently asked questions

This is an Erasmus+ International Credit Mobility project of Leiden University’s Faculty of Science with two Nigerian universities, the Center for Basic Space Science and University of Nigeria.

In his PhD research in the field of public administration, Mark Reijnders looked at why people do not receive the help they need. They lose their way in the labyrinthine support system or become bogged down in bureaucracy. In public administration this is known as non-take-up of social care. PhD defence…

Legal proceedings are often time-consuming, costly and stressful. Accessible out-of-court dispute resolution can sometimes offer a good alternative, but having access to reliable and efficient judicial proceedings remains equally important.

We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…

Marten Soolmans (1613-1641) studied law in Leiden at the same time that Rembrandt lived in the city. Rembrandt painted Soolmans and his wife Oopjen in 1634, after all three had moved to Amsterdam. This remarkable portrait of the sumptuously dressed Soolmans can be seen at the Kamerlingh Onnes Building,…

A mere day after setting foot ashore in the Bahamas on October 13th 1492, Christopher Columbus notes the broad foreheads of the inhabitants of the Americas. These permanently altered cranial shapes are deliberately created through the application of pressure to the head of the infant in the first years…

In the spirit of 'unity in diversity', our objective is to promote insight into and appreciation for the wonder that the same physical laws and mathematical concepts apply to the whole of nature, from the largest to the smallest energy and length scales. We strive for the application of abstract theoretical…

How did free agents in the Dutch Republic react to the creation of colonial monopolies (VOC and WIC) by the States-General? This project answers this question by looking at the role individuals played in the construction of an informal global empire parallel to the institutional empire devised by the…

How did slaves in the eighteenth century manage to empower themselves and their kin, and why did this become all the more difficult in the nineteenth century?

The project GRADIENTS investigates what it meant to be European in colonial Africa where identification as European often did not depend on skin colour and was understood on a spectrum with many gradients.

Team History of Africa and the Americas

Hieratic Papyrology

The coronavirus has the world in its grip. Finding a cure has never been more important. Unfortunately, the development of new drugs for treatment of the COVID-19 disease caused by the virus and development of a vaccine are complex, lengthy, and above all costly processes. With the help of computer…

The Hague is a lively student city and offers everything you’ll need to turn your time as a student into the time of your life.

eLaw – Center for Law and Digital Technologies offers educational programs at Pre-University, Bachelor, Master’s, Advanced Master’s, and postgraduate level in the field of law, technology, and society.

The Urban Studies bachelor’s programme is taught at Leiden University's location in The Hague, a vibrant city offering many cultural activities and sports opportunities, and close to the beach of Scheveningen.

Workshop

Would you like to know more about the Master Population Health Management? Or about studying and living in the city of The Hague? The University organises several information sessions to help you make the best choice.

In a significant step toward restoring cultural heritage, PhD candidate Marie Kolbenstetter has played a pivotal role in repatriating a collection of 133 archaeological artefacts from the prestigious Musée du quai Branly in Paris back to their place of origin in southern Honduras. Her efforts underscore…

Before researchers can develop targeted drugs, they need to know exactly how a disease works. Biochemist Bert Beerkens created molecules that allow them to find out. He used caffeine as the basis for new molecules that enable research into certain receptor proteins on cells.

We already know a lot about genetics and the risk of breast cancer. But much still needs to be done in breast cancer genetics to improve the prognosis and make sure women at high risk aren’t missed. This is what Professor by Special Appointment Marjanka Schmidt will say in her inaugural lecture on 4…

The Global Strategy for Plant Conservation, a world-wide effort by the botanist and plant protection community, is making considerable progress in protecting plant diversity around the world, a new report says. The Hortus botanicus Leiden is one of the partners of the project.

Amsterdam-based bicycle company VanMoof was declared bankrupt in court this week. The company had been struggling with financial problems for some time and recently closed its doors, causing great concern among customers. Several affected customers whose newly bought or repaired bikes were still being…

Starting September 2022, Foteini Tsigoni is tasked by the Faculty of Archaeology to bring the different nationalities within the faculty community together. Herself an international student, she experienced culture shock wile adapting to the Dutch way of life, and is committed to help out new and current…

Ramesh Ganohariti, PhD student and Ernst Dijxhoorn, Assistant Professor at Leiden University, researched the relation between international relations and sports, with sport and sports events increasingly being used for various diplomatic and political goals.

PhD candidates carry out a programme of independent research and additional limited) course work, culminating in production of a PhD thesis in typically 4 years.

Leiden Science’s monthly dose of research inspiration from our staff, for our staff and all other curious minds.

The HJD Article Award is a biannual award given to the published research article which best advances the theoretical and/or empirical study of diplomacy.

PhD candidates carry out a programme of independent research and additional (limited) course work, culminating in production of a PhD thesis in typically 4 years.

Excavations at Geleen-Janskamerveld 1990/1991