Botanisch filosoof Norbert Peeters vertelt over hoe mensen omgaan met planten in het algemeen, en met onkruid in het bijzonder.

De Europe Hub verbindt onderzoekers van verschillende faculteiten. Het netwerk biedt hun de kans snel vakkennis uit te wisselen en projecten gezamenlijk te beginnen. Door de hub is een nieuwe minor in ontwikkeling en hij biedt kansen voor onderzoeksfinanciering.

De Actiematrix is de uitkomst van een inventarisatie van mogelijke maatregelen en fungeert als onderlegger voor het werkprogramma van Werkbalans in Actie. De matrix biedt een palet van mogelijke acties die medewerkers, opleidingsvoorzitters, leidinggevenden, commissies, MT’s van instituten en bestuurders…

Thesis assessment is carried out according to faculty standards with associated assessment forms and manuals.

This year’s Education Market will be happening very soon. On 19 June, staff members will be on hand at a variety of stands in the Huizinga Building, ready to inspire you with their experiences. Two of the lecturers describe what they will be doing.

Dit deel bevat de editie of heruitgave van 52 papyri en ostraca, daterend uit de periode tussen de derde eeuw voor Christus en de achtste eeuw na Christus.

More than 1.3 million people worldwide die of tuberculosis (TB) each year, making research on its prevention and control essential. Researchers from various disciplines in Leiden are studying TB. A symposium on 24 March will highlight different activities in the hope of boosting nationwide collabora…

The year 2023 saw the earthquake in Turkey and Syria, the Wagner Group rebellion and wildfires and floods as all the weather records were smashed. Our most-read stories were about the climate crisis and the elections: here’s the list.

On April 14, 2025, Dr. Hans Petschar, the recently-retired Director of the Bildarchiv und Grafiksammlung at the Austrian National Library in Vienna, delivered the Sixth Annual Austrian Studies Lecture 'Austria’s Present Past: A visual journey through Austrian history 1925 – 2025'.

How can we as a society prevent suicide? According to Professor of Suicide Prevention Renske Gilissen, a better understanding and targeted action could help save lives.

On 4 May, Leiden University remembered the victims of the Second World War from our university community. Alumni, students and present and former staff of the University came together for this Hour of Remembrance.

From Galileo Galilei to Albert Einstein and from Anna Maria van Schurman to Anton de Kom: only a selection of the 25 authors who's books and ideas had extraordinary historical impact, in some cases even to this day. Leiden University Libraries and the National Museum of Antiquities jointly present the…

Writers are not just storytellers: with their novels, tales and critiques they broaden the social imagination, reflect on societal developments and sometimes put new themes on the map. This can easily lead to a conflict because writers and literati often think very differently about issues such as…

The number of women in the Netherlands dying before, during or after childbirth has halved.

How can Europe lead the way in vaccine development that is fast and for all? To answer this pressing question, Professor of Vaccinology Meta Roestenberg is holding a panel session on 14 July at the EuroScience Open Forum in Leiden.

Leiden University has awarded its prestigious University Medal to Emeritus Professor Lex van der Eb. As a pioneer in genetics and molecular biology, he received this honour for his services to science and his key role in the development of the Leiden Bio Science Park (LBSP).

Human resources

Five Leiden research projects in history, law and AI have received SSH Open Competition M 2024 funding from the Dutch Research Council (NWO). The researchers have up to five years to work on a promising idea.

The universities of Delft, Leiden and Rotterdam are working together to show their students what artificial intelligence (AI) means for their own field. Three AI minors will start in the 2022 – 2023 academic year and will answer questions such as: ‘How best can you use AI in your research discipline?’…

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

Arts and culture

Whereas the Netherlands Court of Audit used to conduct an investigation once a year, the average civil service organisation now has a few per year to contend with. Is so much going wrong nowadays? Not at all, says Professor by Special Appointment Sjoerd Keulen. ‘It’s one of the methods that makes democracy…

National Meat Free Week (Nationale Week Zonder Vlees, 7–13 March) is an initiative to reduce meat consumption. Assistant professor Paul Behrens is studying what impact a change in our food consumption would have on the world. What, according to him, are the main reasons to switch to a (mainly) plant-based…

What with coronavirus, the American elections and the Brexit botheration, we had almost forgotten that something miraculous happened in 2020: the repressed people of Belarus rallied against dictator Alexander Lukashenko, who has been in power for 26 years. Months later, what remains of the protest?…

South Korean smash hit Squid Game is on track to becoming the most successful Netflix production ever. The series is number one in over 90 countries. Professor and Korea expert Remco Breuker can see why South Korean pop culture is becoming so popular, also outside Asia.

Fifteen knowledge institutions and the Ministry of Education, Culture and Science have signed the covenant for Open Science NL. Leiden University has also joined the covenant, via the Universities of the Netherlands. This marks the start of the Dutch Research Council’s and brings the transition to open…

Researchers from the Leiden University Medical Center (LUMC) have successfully used stem cell gene therapy to treat a baby with the severe congenital immune disorder SCID. An important milestone: it is the first time stem cell gene therapy of Dutch origin has been administered to a patient, and also…

Bird, butterfly, fish: when you look through a children’s book, you usually don’t think about the fact that humans divided these animals, depicted in bright colours, into categories. Yet, this division has been discussed for centuries. In her PhD dissertation, Didi van Trijp shows how natural scientists…

As an academic, it’s not easy to communicate your research to society – and in a language people will understand. With its Outreach Grant Symposium, Young Academy Leiden (YAL) wants to support and inspire a new generation of ‘outreachers’.

What do the cloth trade and slavery have to do with each other? Quite a lot, as it turns out, as by history student Sjoerd Ramackers demonstrated in his bachelor’s thesis. He reveals that cloth merchant Daniel van Eijs was closely associated with four plantations in Berbice, a former Dutch colony on…

To inhibit proteins that contribute to the growth of aggressive cancer cells, that’s the plan of Professor Bob van de Water and his team. They will receive over 700,000 euros from the KWF Dutch Cancer Society for their research. Researcher Maaike Vreeswijk and pathologist Danielle Cohen are affiliated…

Professor Pieter ter Keurs has spent his entire career studying collecting. Now, he is retiring. ‘I hope the focus on collections will carry on.’

Afghans who came to the Netherlands in a hurry, refugees who were used as leverage by Belarus and boat refugees who tried to reach Europe in an increasingly desperate manner: the newspapers were once again filled with news about migrants. Today, on International Migrants Day, we talk to professor Marlou…

Festival

Lecture, Global Histories of Knowledge Seminar

Conference, D&I Event

Talking about suicide is important, but anything but comfortable. To make this difficult subject easier for students and staff to discuss, the university is organising a campaign week in line with the national campaign ‘1K Z1E J3’ (I see you) being run by Stichting 113 Zelfmoordpreventie (113 is the…

Genes predict whether you have a propensity for an illness but environmental factors often have the last word: nutrition, air pollution, lifestyle, stress. The exposome as both culprit and chance. Large-scale research is being carried out into this at Leiden. Thomas Hankemeier, Professor of Analytical…

So much has happened this year! 2023 was an eventful year in which several wars raged about which our experts could offer interpretation. It was also the year in which the government made apologies for the slavery past. Leiden humanities scholars were at the forefront of this with their research on…

Symposium

A delegation from Leiden University recently embarked on a knowledge mission to various NGOs, universities and government organisations in Indonesia. New partnerships were formed and important knowledge exchanged, and researchers from Leiden gave guest lectures.

My colleagues and I have been devastated to learn that our good colleague and friend Stefan Landsberger (born 1955) passed away unexpectedly, on 26 September 2024. Stefan had been a fixture of China Studies in the Netherlands, where he had been Associate Professor of contemporary Chinese History and…