Leiden chemists recreated the bacterial capsule of meningococcus in the lab. With a few modifications, these capsules can serve as an extra safe and effective vaccine against these notorious bacteria, which can cause, for example, meningitis. PhD candidate Jacopo Enotarpi and his team published the…

This week, Leiden University bade farewell to Henri Lenferink, who is retiring after 20 years as mayor of Leiden.

An international visitation committee has judged the research programme of the Institute of Public Administration of Leiden University as excellent. The report, which looked at the period 2014-2019, was published last week.

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

The electrochemical reduction of a group of organic compounds on platinum is strongly dependent on the arrangement of the atoms in the platinum surface. Christoph Bondue, postdoc in Marc Koper's group, published this in Nature Catalysis on 4 March. The reduction of such compounds is an important process…

Monday 6 February the Faculty of Archaeology had the honour to receive the e Ambassador of the Dominican Republic, H.E. Dr. Juan Bautista Durán. The motive of the visit was to discuss the collaboration between the university and the Dominican Government after the signing of a new Memorandum of Understanding…

The archaeologists have been working from home three weeks now. Remotely, through Teams, we meet up with Miguel John Versluys’ research team, to see how they continue working in times of corona.

The Young Academy Leiden (YAL) acquired six new members on 1 September. We talked to the new and former chair of this platform for young academics about what they have achieved over the recent period and what is on the agenda for the coming year.

From March 2023, political scientist Katharina Natter (Leiden University) will lead part of an ambitious project called PACES, funded by Horizon Europe and coordinated by Simona Vezzoli (ISS). PACES is an innovative, inter-disciplinary and multi-level research project that offers a groundbreaking approach…

On 23 March a Sonology concert took place in the Arnold Schönbergzaal at the Royal Conservatoire, dedicated to Gabriel Paiuk’s The Construction of an Imaginary Acoustic Space, a composition for ensemble and electronics performed by New European Ensemble.

A smart city is of no use if its residents don’t trust it. Tanaquil Arduin, Chief Data Officer at the Municipality of The Hague, and Bram Klievink, Professor of Digitalisation and Public Policy at Leiden University, explain how this can be avoided – to some extent. ‘Make sure civil servants and residents…

Robin Smith, post-doc of the 'Food Citizens?'-project wrote an interesting blog for the Leiden Anthropology blog on the basis of her previous fieldwork on the role of trust in the wine industry in Istria.

With a call for dialogue and collaboration, vice dean Bart de Smit kicked off the new academic year for the Faculty of Science on Tuesday 3 September. Theoretical physicist Carlo Beenakker outlined the possibilities of quantum as a disruptive technology.

Leiden University celebrated the Relief of Leiden with the 3 October University. This year the University also took part in the festive parade, to promote 444.

People need to get to know each other to see the positive side of migration, according to photographer and documentary maker Koen Suidgeest. Since the end of September, Suidgeest has been the new city photographer for the region of Leiden. His goal is to photograph as many cultural identities as possible…

An international team of astronomers including Leiden scientists publishes the image of a young star with a surrounding dust disk that is still being fed from its surroundings. The phenomenon around the star SU Aur may explain why so many exoplanets are not neatly aligned with their star. The European…

André Ramcharan has been a familiar face at the Faculty of Archaeology for decades. Joining our faculty without any knowledge on animal bones, he has become an expert on the matter, supervising the organisation and expansion of the faculty’s collection. ‘We expanded to include birds, fish, and shellfish.…

Friday 25 April 2025 | Leiden University Institute of Security and Global Affairs – The Hague

Since January the Dutch public have been able to follow a free course on artificial intelligence (AI) and its far-reaching impact on our lives. Leiden scientists Marlies van Eck and Valerie Frissen, from the Institute for the Interdisciplinary Study of the Law at Leiden's Law Faculty, are part of the…

Seger Kersbergen studied the Cabo Verdean nightlife in Rotterdam. He explains how their music describes their nightlife and daily lives.

It’s not a regular occurrence at Leiden University: two professors giving their inaugural lecture on the same day. Berna Güroğlu and Ellen de Bruijn specialise in related disciplines: they both research the influence of social context on processes in the brain – Güroğlu in adolescents and De Bruijn…

Using speech analysis to resolve crimes. That's what Meike de Boer (26) is aiming to do with her PhD research. 'By analysing how a person pronounces

Two years ago, Amanda Henry joined the Faculty of Archaeology’s Archaeological Sciences department. She investigates diet and human evolution, with a specific focus on plant foods. ‘Most of the studies on the prehistoric diet focus on meat and hunting. This just didn’t make sense to me.’

A soap film with chemically distinct sides: it's the latest breakthrough in the research led by chemist Sylvestre Bonnet. This unique soap film, along with an innovative device capable of continuously producing new soap films, forms a crucial piece in the puzzle for the development of artificial pho…

From bedtime stories about mathematics to podcasts about microplastics and games on weeds: master students from the Science Communication & Society track presented the real-life products they developed during their final presentations on 20 December. Many of the products are already implemented by c…

How should the municipality of Eindhoven organise the reception of asylum seekers? What is the best electoral system for the Dutch Parliament? Governments regularly ask citizens for their opinions. Computer scientist Michiel van der Meer has improved the method used for citizen assemblies. He will defend…

PhD student Esmee Koedoot studied the underlying processes responsible for metastases in a dangerous type of breast cancer. She hopes to find new possibilities to fight the disease. In December 2019 she obtained her doctorate cum laude.

Scientists often need to make sense of complex systems without knowing the important parameters or even without access to all the information. A collaboration of network theorists, including Diego Garlaschelli (IMT Lucca/Leiden), has now published a review article in the inaugural issue of Nature Reviews…

The Confederation of Laboratories of Artificial Intelligence Research in Europe (CLAIRE), Europe’s grassroots organisation of scientists and experts in Artificial Intelligence, announces the opening of administrative offices across Europe.

In a world first, an international team of researchers has read an unopened letter from Renaissance Europe – without breaking its seal or damaging it in any way. Nadine Akkerman, Reader in early modern English literature at Leiden University, is co-author of the article that appeared on 2 March in Nature…

'The kind of knowledge you gain in International Studies can take you anywhere,' says Gaby van de Wal (26, The Hague, The Netherlands), who graduated from the programme in 2018. Her own career path is proof that indeed, an International Studies degree comes with many opportunities.

Of je nu appt, online nieuws leest, of door Instagram scrolt, jouw gedrag wordt gemonitord. Sterker nog: wát jij ziet, wordt door anderen bepaald. Promovendus Aleksandre Zardiashvili onderzocht de impact van online advertenties en de macht van de bedrijven erachter.

Video conferencing from your sitting room and algorithms on social media that know your interests: new technology is an increasingly integral part of our lives. At the same time there is a growing call to protect our privacy, and this is causing friction, at the University too. In part because of the…

With interactive live presentations, a mass of chat opportunities and 360 degree videos, more prospective students than ever can gain a good impression of their chosen programme and the city they’re thinking of studying at. Instead of meeting up in the Pieterskerk or faculty buildings, thousands of…

During adolescence, some young people have stable best-friend relationships, while others change best friends frequently. Developmental psychologist Lisa Schreuders has studied the brains of young adolescents: ‘It seems that friendships in your early years can have consequences for your friendships…

Stacked layers of graphene can act like a mirror for beams of electrons. Physicists Daniël Geelen and colleagues discovered this using a new type of electron microscope. In an article in Physical Review Letters, they describe their results, which could lead to the development of optics for electron…

I am an associate professor in health psychology here at the Faculty of Social and Behavioural Sciences. My main line of work is health behaviour and behaviour change, so trying to understand why people do what they do including clearly unhealthy things. I have done a lot of work on personal goals and…

Digital journalism is transforming the way in which information and communication technologies are used by media workers. With this change journalist practices, norms and values are also being reshaped. This is the conclusion of Tomás Dodds PhD research.

Is our universe built up out of warm or cold dark matter? The standard model assumes cold dark matter particles, but astronomer Sylvia Ploeckinger is now testing the possibility of a warm counterpart: sterile neutrino’s. For this project, she received an NWO Physics/F grant, a special grant for women…

Aisha Hassan came to the Netherlands when she was two months old. Her mother had fled Somalia and made a new home here. Aisha doesn't remember much about that time, but her mother’s stories about Somalia ignited a lifelong interest in developing countries. ‘Her stories have always fascinated me.’

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…

To what extent did the Netherlands grow rich from the Transatlantic slave trade? In his dissertation 'Walcherse Ketens', Gerhard de Kok looks at Vlissingen and Middelburg, the most important slave trade cities in the Netherlands during the second half of the 18th century. It turns out that, although…

Dr. Sara Brandellero, expert in Lusophone literatures and cultures and member of the Leiden University Centre for the Arts in Society, will lead a research project about urban night life and migration, culture and integration in eight European cities. The project aims to support community well-being…

Over the past few hundreds of years, the world has changed radically. However, cultural stereotypes from the 17th century are still alive and well today, and even academic researchers sometimes use terms coined centuries ago. Why do they do that? Herman Paul, Professor of the History of the Humanities,…

With a large majority of votes, drug researcher Alireza Mashaghi Tabari was chosen Discoverer of the Year 2017 of the Faculty of Science. This was announced by Rector Carel Stolker during the faculty’s New Year's reception on 9 January. Computer scientist Kristian Rietveld became Teacher of the Year…

Although smartphones and other consumer cameras are increasingly used for scientific applications like citizen science, it’s still difficult to compare and combine data from different devices. PhD student Olivier Burggraaff developed a new easy-to-use standardised method which makes it possible for…

According to some stories, Einstein washed his hands there only once. According to others, students moved it as a joke. Whatever the case may be, Einstein's sink has enjoyed mythical status among students and employees of the Faculty of Science for decades. But what is the real story? Alumnus Alex Pietrow…

Do children growing up in a jihadist or right-wing extremist household develop the same extremist views as their parents?

Peter Scholten is one of the four professors that were officially appointed as Leiden-Delft-Erasmus professor last week. Apart from his appointment at the Erasmus University, he has now also been appointed at FGGA. We asked Scholten five questions about his double appointment and the collaboration between…

Our university recently joined the European university alliance Una Europa. Staff from the 11 affiliated universities met in Leiden last week to discuss our collaboration.