Researchers in Leiden have, for the first time, observed how a specialised enzyme helps bacteria stay alinve when oxygen levels are low, and how that process can be blocked. The discovery opens up new possibilities for targeted antibiotics.

From one year to the next, face masks have started to appear in the environment. As the masks are discarded, they end up in the top soil, in sediment layers, and in refuse heaps. In a couple of generations archaeologists will study the layer that has already been labeled the Face Mask Horizon. Current…

International collaboration brings opportunities, but it also carries risks. The Knowledge Security Committee plays a crucial role in assessing such partnerships. Due diligence is essential, says Chair Joanne van der Leun. ‘If this were easy, you wouldn’t need our committee.’

At the halfway mark, how should we adjust our strategy to a rapidly changing world? Faculty administrators, academic directors, directors of expertise centres, staff from Administration and Central Services, members of the representative bodies and students assessors met on 6 June to discuss this qu…

Assistant Professor Karlsson Linnér, who works at the Department of Economics, is one of the recipients of a Veni grant. His research on the accuracy of preventive genetic testing is a fine example of the intersection of economic science and law.

ESA’s space telescope Gaia, which maps the Milky Way, completes its active phase of scanning the sky on 15 January. Over the past decade, Gaia has made more than three trillion observations of about two billion stars and other cosmic objects. ‘Gaia is already the discovery machine of the decade,’ Leiden…

During Cyberweek, from 17-24 October, the Faculty of Governance and Global Affairs (FGGA) highlighted its research and teaching on cybersecurity, digital developments, and their impact on society.

How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.

Professor Marc Koper researches how you can use electrical energy to make or break chemical bonds. He has just been awarded a Spinoza Prize, the Netherlands’ highest personal science award, for his fundamental research into how this form of electrolysis works.

The university may seem a bit subdued in the run-up to the Dutch elections on 29 October. The media has barely mentioned education as an election issue, but behind the scenes the university is lobbying hard, says acting President of the Executive Board, Timo Kos. ‘We’re fighting for the future of our…

What are the main trends in family life today? Three stand out: young adults living with their parents for longer, people delaying parenthood and widening inequality between families. How did these trends emerge, and what are their consequences? Leiden experts explain.

Organisation

Last Tuesday, the Herta Mohr building was filled with secondary school pupils. During the profile choice afternoon, they were introduced to various aspects of language studies. 'It’s really exciting to be here.'

In a new book forthcoming with Oxford University Press, Dr Helena U Vrabec, guest researcher at eLaw and privacy lawyer at Palantir Technologies, explores the area of control rights under the GDPR.

The Fine Mechanical Department has recently expanded its machine park with a universal CNC milling machine. The purchase of this machine is not only an investment in technology, but also in the future of the Fine Mechanical Department, where it is expected to remain in operation for at least 10–15 y…

Maurijn van der Zee searches for insecticides that protect crops without harming wildlife or leaving residues in our food. His GREENSHIELD project received funding from the NWO Open Technology Programme.

On 9 February 2026, Bastiaan Rijpkema, Professor of Jurisprudence, was elected as a member of the Royal Holland Society of Sciences and Humanities (KHMW).

On 9 February 2026, Bastiaan Rijpkema, Professor of Jurisprudence, was appointed as a member of the Royal Holland Society of Sciences and Humanities (KHMW).

On Safer Internet Day (Tuesday 6 February), UNICEF Netherlands organised a symposium on the theme of 'Children's rights in the digital world' in collaboration with Leiden University and Kennisnet. Simone van der Hof and Ton Liefaard contributed to the symposium.

Insurers determine for themselves whether someone has committed fraud, impose sanctions immediately and hardly ever report it. As a result, police, prosecutors, and criminal courts are side-lined. And policyholders are sometimes left out in the cold. Bart Custers, professor of Law & Data Science at…

Leiden University’s President of the Executive Board, Professor Annetje Ottow, has been reappointed for a second term by the Board of Governors.

In just over a decade, Uber has revolutionised how we move around our cities. The ride-hailing app was a game-changer: you just tapped your phone and a cab would find you. You even paid through the app. However, some of the Uber’s more controversial practices have triggered the interest of law enforcement,…

The Justice and AI Jean Monnet Centre of Excellence is striving to become a European hub of excellence on fairness in AI. Eduard Fosch-Villaronga was invited to explain the role of fairness in robots and AI systems.

Organisation, Security

Using artificial intelligence to find new antibiotics. With that, researchers from Leiden University are nominated by magazine KIJK for the Best Tech-idea of 2021. From September 14 onwards people can vote to crown one of the nominees as the winner.

How can universities engage students in blended learning environments? Linyuan Wang’s (PhD at ICLON) dissertation offers vital insights. Blended learning combines traditional classroom instruction with digital tools and online activities.

Global challenges require global governance answers. For that reason, between 5 and 7 June, the interdisciplinary research programme Global Transformations and Governance Challenges (GTGC) has selected 'Emerging trends in global governance' as the theme of its annual conference. Researchers, students…

From November 13 to 17 2023, a workshop on Ethics in Caribbean Archaeology was organized at the Lorentz Center in Leiden by Eduardo Herrera Malatesta (Aarhus University), Felicia J. Fricke (University of Copenhagen) and Maaike de Waal (Leiden University).

AI networks CLAIRE and ELLIS have jointly won the prestigious German Artificial Intelligence prize. The WELT newspaper awarded the prize, worth 100,000 euros, last week in Berlin. The AI Prize is an innovation award for pioneering achievements in AI research and development.

Soil that is too wet, or too dry. Or with a lot or few nutrients. Due to climate change, the differences are becoming bigger, and plants must increasingly be able to adapt to survive. How do you make plants more stress-resistant? For this purpose, researchers from Leiden, along with other universities,…

Ludo Waltman, professor of Quantitative Science Studies at Centre for Science and Technology Studies (CWTS), has been awarded the Derek de Solla Price Medal.

Carlotta Rigotti and Dr Eduard Fosch-Villaronga from Leiden University presented the Horizon Europe BIAS project and its preliminary findings on fairness and diversity biases of AI applications in the labour market during the 'Algorithms for Her?' conference.

Leiden University Libraries has been elected to the Executive Committee of the IIIF Consortium. The term of office is two years starting from January 2022.

The issue of how to deal with a development such as digitalisation in the public domain raises difficult questions for the municipality: who is responsible and when do you intervene?

Are AI models such as Midjourney violating artists' copyright? Dirk Visser, Professor of Intellectual Property Law, spoke about this topic on Dutch current affairs news programme 'NOS Radio 1 Journaal' .

Elizabeth Hicks won first runner-up in the Netherlands Institute of the Near East (NINO) MA thesis 2021 competition at the end of January.

This month, it came out that a subdistrict court judge used ChatGPT to formulate a ruling. The judge included some text generated by the popular AI chatbot in his decision. This resulted in a lot of media commotion, raising doubts as to whether using ChatGPT in court is permissible and responsible.

It was great to welcome so many people at the LACDR Spring symposium which was held on May 19th. After an inspiring lecture of Dr. Frederica Eduati, associate professor at the Eindhoven University of Technology, the PhD speakers impressed with their talks. The poster sessions gave a good inside in the…

Prof. Dr. Marieke Adriaanse has been appointed as strategic representative and new member of the steering committee of the Healthy Society Programme. This programme is a collaboration between Leiden University, Delft University of Technology, Erasmus University, Medical Delta, and the Province of South…

Leiden Law School will host the LDE-Majority World Workshop titled ‘Contemporary Migrations in the Americas: Cross-Atlantic Dialogue for Socio-Spatial Justice’, taking place from 24 to 28 March 2025. This workshop will address critical challenges around migration governance and human rights.

Movement behaviours, such as physical activity, sleep, and the amount of time we sit each day, impact our health. Recently, more researchers are looking at the influence of these behaviours combined, but this is a challenging task. For example, it is difficult to monitor in what way movement behaviours…

Insurance companies are registering more and more people for having committed fraud. In principle, it is a good idea to tackle cases of fraud. However, research shows that an increasing number of people are being wrongly included on the fraud list. According to Bart Custers, Professor of Law & Data…

Organisation, Social

Organisation

It was the Night of Discoveries on Saturday 16 September: a summer encounter between art and science. Leiden researchers from various disciplines inspired the public with their quest to understand our world.

Oostenrijk wil online bedreigingen en haat harder aanpakken. Aanleiding is de dood van huisarts Lisa-Maria Kellermayr. Zij maakte eind juli een einde aan haar leven, nadat ze maandenlang werd bedreigd door mensen die tegen coronamaatregelen en vaccinaties zijn.

Hastings College of the Law and Leiden Law School have a long-standing exchange programme. Each year, students participate in a student exchange programme. Likewise, professors from Hastings College of Law have been visiting Leiden Law School and vice versa.

On 23 February, Daniel Somart and Karolina Wróbel, students of the BASS took part in the 2023 SAGANET Awards, a competition in which participants can show a serious game they developed.