AI, data and algorithms are developing at breakneck speed, while legislation inevitably lags behind. But laws and regulations are essential – look no further than the Dutch childcare benefits scandal.

The COIn grants enable researchers to improve the infrastructure for their research. The four initiators of two projects explain how the grant has helped them.

What do bats do at night when they’re not hunting? Using tiny GPS trackers, Leiden researchers discovered that pond bats spend a substantial portion of the night resting – often outdoors. This surprising insight could change the way we protect them.

The ‘Schijf van Vijf’ is the Dutch official dietary guideline, similar to a food pyramid, that shows what a healthy daily diet looks like. The updated version places more emphasis on plant-based eating. But how big is the impact of that shift really? We asked environmental scientist Joran Lammers.

Next week, Sara Perlstein will defend her PhD on risk talk: the everyday conversations we have about risks with people close to us. From eating sushi to climbing or smoking, these informal talks shape how we deal with danger in other ways than official health advice does.

A Leiden Groningen student team has reached the European finals of the BISC-E competition. In this annual competition students have to come up with a sustainable solution to a major social problem. The team invented Suckerspheres: a natural alternative to the plastic microbeads that are still widely…

Researchers at the Faculty of Science work at the frontiers of knowledge every day, tackling today’s major societal challenges. Their work is recognised through grants, prizes and other awards. We highlight some of these achievements below.

Even when a border has officially disappeared, it is still people who decide whether others may cross freely. This was also true for the Polish-German border, where PhD candidate Maryla Klajn spend six months conducting fieldwork.

The Faculty of Archaeology is welcoming two new Education Directors this spring: Aris Politopoulos for the bachelor’s programme and Rachel Schats for the master’s and research master’s programmes.

In the Philippines, Indigenous communities have been harvesting wild honey for centuries. A new chemical analysis of this honey now provides insights into the biodiversity of the region. ‘And an additional reason to protect the national tree properly,’ says lecturer Merlijn van Weerd of the Centre for…

Since January 2026, Alex Geurds has been the new Dean of the Faculty of Archaeology. His start was calmer than many expected, but behind that calm lies a period of exploration, listening, and strategic forward thinking.

Helping industry to spot dangerous and climate-harming gas leaks faster, cheaper, and more reliably than today’s tools: that's what Leiden University and BigCircle Ventures set out do in a new spin-off company.

Autism research is at times saturated with implicit values, norms and possible prejudices. Researchers should be more aware of this, says development psychologist Carolien Rieffe. She advocates Critical Design: a self-critical view as a scientific method.

Preventing viral infections from being transmitted through blood transfusion and organ transplantation lies at the heart of the work of medical microbiologist and virologist Mariet Feltkamp and her team.

Why would someone choose to learn a language like Arabic? For Wessam Semida, teacher at the Academic Language Centre (ATC), the answer goes far beyond grammar and vocabulary. 'It really opens your perspective on life,' she explains. 'Language is a key to understanding people, cultures, and different…

The Iran war has pushed up fuel prices and raised concerns about a global energy shortage. How well prepared is the Netherlands? We asked two experts.

Researchers from Leiden University, University of York, University of Barcelona/IQTCUB/ICREA and The Francis Crick Institute report a new class of experimental compounds that powerfully block influenza viruses. The findings offer a potential new strategy for treating flu infections and preparing for…

Sang-Ah Yoo is a freelance journalist and is following the lateral entry programme Dutch at ICLON Leiden University. She enjoys showing students what language can do for you.

What began as a PhD project has grown into a website with 120,000 unique visitors each year. With the platform OpenML, researcher Jan van Rijn is contributing to open science, aiming to make machine learning more transparent, accessible, and fair.

Starting on 1 February 2026, Nadia Sonneveld will work one day a week as the faculty's Diversity & Inclusion (D&I) officer. Here, she explains how she came to take on this role and her priorities for the coming months.

Since criticising the war in Ukraine, Russian author and cardiologist Maxim Osipov has fled Russia. Come September, he will be Leiden University’s writer in residence and teach a course on Russian literature.

A partnership with the Leiden Leadership Programme: what does it bring you? Two partner organisations in the field of sustainability, Arcadis and Bioto, share their experiences: “It's great to be surprised by new insights.”

LERU, the League of European Research Universities, celebrated its fifteenth anniversary on 7 March in Brussels. The network of leading European universities has now grown to include 23 universities.

The antibiotic EVG7, developed in Leiden, has proven capable of fighting the dangerous gut bacterium C. difficile with only a minimal dose. What’s more, the bacterium is far less likely to return, a major issue with existing antibiotics. The research was published in Nature Communications.

In order to better understand the course of Alzheimer’s disease, Frédérique Kok believes that a strategic and structured approach is needed: the Mastermind research approach. With her LUF grant, Kok wants to generate high-quality data to build a mathematical model that can recognize the onset of the…

On 26 November historian Jan Grabowski and sociologist Barbara Engelking will both give the Cleveringa Lecture. They wrote a book about the Holocaust in Poland and were taken to court for defamation.

Gaan vaders minder werken als andere vaders dat ook doen? Helpt betaald ouderschapsverlof hen om meer op te pakken in het huishouden? Hoe bepalend zijn sociale normen voor verschillen op de arbeidsmarkt? Onderzoeker Max van Lent gaat het uitzoeken.

PhD ceremonies in the Academy Building will be much easier for family, friends and other non-specialist audience members to follow after the summer. The Doctorate Board is pleased to have decided that as of 1 September, all Leiden PhD candidates will begin their PhD defence with a lay talk. ‘It can…

During an inspiring meeting at the Health Campus The Hague on 2 April, Jan Anthonie Bruijn and Jet Bussemaker reflected on their experiences in politics and looked ahead to the future of Dutch healthcare.

For 125 years, Leiden University and the Leiden Instrument Makers School (LiS) have worked together on science and technology. This partnership is more important than ever today, as demand for skilled high tech professionals is growing fast: by 2030, an additional 40,000 people will be needed.

From 1967 to 1982, the United Nations undertook several peacekeeping operations in the Middle East. In his thesis from the Institute for History, Diego Salama examines how these operations were connected and their impact on the region.

Young people in forensic practice navigate between street culture, digital networks and care; worlds that are increasingly intertwined. This calls for a different way of seeing and acting. Dual PhD candidate Jeffrey Jhanjan explores how professionals can better understand and support these young peo…

He started out as a temporary staff member at the CML’s education office, and now – eight years later – Jasper Williams is the institute’s new Director of Operations. In this interview, he talks about entrepreneurship, making a social impact, and playing competitive bridge. ‘I like doing things properly,…

Chen Wang has recently finished her doctoral research and will be defending her dissertation on May 13th. For her PhD she researched the lead in artefacts from ancient China, using isotope analysis to match them to their origins. She applied analytical methods to new contexts and used the data from…

Child development expert Marga Sikkema-de Jong explains how the online world affects children and how to talk to them about what they see.

Leiden PhD student Xuequan Zhou has designed a new promising molecule that efficiently kills cancer cells, but does not harm healthy tissue. The trick: the drug is only active when irradiated with light. Zhou’s new compound does this extra efficiently by cleverly self-organising into nanoparticles.…

Physicist Martin van Exter works with light at nanoscale, at the forefront of nanocomputer research. But as Director of Education he also has a vision for physics teaching. Inaugural lecture 18 November.

Advocate-General Simon Minks was involved as a public prosecutor in the Context proceedings. In this interview he shares some insights with the Centre for Professional Learning, of which he is a Fellow.

Leiden University and four other Dutch universities will appoint 51 PhD candidates to conduct solution-oriented research for and with the African continent.

Music, being together and the impact of science were at the heart of the festive opening of the academic year and the start of the faculty’s 200-year anniversary. The faculty was 200 years old on 2 August 2015. The anniversary was celebrated in style, attended by 500 members of staff and students.

From the discovery of exoplanets to the hunt for extraterrestrial life. At the Astronomy Gala on 17 December in the concert hall in Leiden, astronomers looked back, but above all ahead. With King Willem-Alexander as guest of honour.

Fancy listening to a podcast over the long Whitsun weekend? Over the past few months, some excellent work has once again been produced at the faculty.

The valedictory lecture of former rector magnificus Hester Bijl was buried on Tuesday 12 May in the garden of the Kamerlingh Onnes Building (KOG). Where did this young, and slightly eccentric, university tradition come from?

Wie empathisch glimlacht om iemands geluk of fronst om iemands leed, stijgt in aantrekkingskracht. Andersom maakt glimlachen uit leedvermaak iemand niet minder aantrekkelijk. Roujia Feng promoveert 26 mei op onderzoek naar de sociale gevolgen van het uiten van (contra)empathische emoties.

Exam, paper, exam, paper. A familiar, though sometimes little unexciting, routine for students. That is why Film and Literary students Sietske de Haan and Wouter Dijkman decided to write a blog post for the course Interculturality. Their impressive achievement was rewarded with a publication on science…

Lights out, spotlight on, the LU talks begin. In the small Imperium Theatre, next to the Leidse Schouwburg, students take turns walking up to the round blue carpet. There they have five minutes to present their first LU talk to lecturers, fellow students, and the camera. ‘Extremely useful and instructive’…

Ruben van Gaalen used a very unique approach for a course of the research master Colonial and Global History: instead of writing an essay, he went to Dublin and made a documentary about African rappers in Ireland.

Starting in September 2026, Leiden University in The Hague will begin establishing a new Knowledge Centre for Kingdom Relations. In addition to bringing together researchers and developing education on Kingdom relations, the goal is to contribute to the public debate and foster greater mutual understanding…

What happens when you let go of the traditional essay and instead invite creativity, imagination and experimentation? Honours College Law students found out with 'unessays', now showcased in an exhibition at the KOG.

Millions of people in the Netherlands have been affected by data breaches in recent months. There have been calls for stricter legislation, but Gerrit-Jan Zwenne, Professor of Law and Digital Technologies, warns against unrealistic expectations. Mass claims could help force businesses to improve their…