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“Is it possible to restore antibiotic sensitivity in resistant bacteria?” Dr. Tingjie Guo wondered. “Watch me and learn”, phage responded. Dr. Tingjie Guo received an open competition XS domain ENW grant from the Dutch Research Council (NWO) to investigate the evolutionary trade-off of antimicrobial…

Three quantum-safe cryptography methods have been standardised for worldwide use since this week. Léo Ducas co-designed the two primary PQC methods selected for this standardisation. Ducas is part of the Cryptology group at Centrum Wiskunde & Informatica (CWI) and is also professor of Mathematical cryptology…

Antoni van Leeuwenhoek, the father of microbiology, died 300 years ago. 2023 has therefore been designated the Antoni van Leeuwenhoek year. The new Unimaginable exhibition in Rijksmuseum Boerhaave is about the amazing world that Van Leeuwenhoek made visible. What was so special about the way he worked?…

Using the Dutch-led Low Frequency Array (LOFAR) radio telescope, astronomers have discovered unusual radio waves coming from the nearby red dwarf star GJ1151. The radio waves bear the tell-tale signature of aurorae caused by an interaction between a star and its planet. The radio emission from a star-planet…

Parents’ talk about new stimuli such as persons or objects strongly affects how avoidant or fearful their child will react. No stronger effect was found when parents had an anxiety disorder or in children with fearful temperaments. Publication by a team of Leiden psychologists in 'Clinical Child and…

Leiden Teachers’ Academy is proud to welcome six new fellows. They will share their expertise with the rest of the university and launch innovative education projects.

Polarisation is pervasive: in the workplace, within teams, and even at the top of organisations. Discussions become entrenched, emotions rise, and collaboration falters. Connections are lost through ‘us versus them’ thinking. The question is how leaders can maintain space for dialogue when tensions…

Het onderzoeksproject heeft als doel ouders te helpen hun kleuters gezonde eetgewoonten aan te leren door het bevorderen van sensitieve voeding tijdens de fase wanneer peuters kieskeurig met eten worden.

The bacterium Vibrio cholerae is a serious threat to our health because it is the causative agent of cholera. Worldwide, over a billion people per year are at risk of cholera infection. New strains of V. cholerae are resistant to the multiple drugs used to treat cholera, meaning that new types of drugs…

Astronomers at ASTRON and Leiden University have used the LOFAR radio telescope to discover a 'brown dwarf' – a faint object more massive than Jupiter, but significantly less massive than the Sun. The discovery of the object dubbed Elegast, opens up a new path that uses radio telescopes to discover…

How can data science improve tax administration? Mark Pijnenburg, a senior data scientist at the Netherlands Tax and Customs Administration, decided to investigate this in a dissertation. He talks about his experiences: 'Sometimes a technique is scientifically interesting, but not applicable in real…

Clinical psychologist Bernet Elzinga has been appointed as Professor of a personal chair at the Faculty of Social and Behavioural Sciences. This professorship will contribute both nationally and internationally to the broader promotion of Leiden University in the field of stress and psychopathology.

Five questions about PREPARE, the new research project funded by the EU and led by Joana Cook. Cook is Assistant Professor of Terrorism and Political Violence at the Institute of Security and Global Affairs and lead investigator on PREPARE.

The research in the framework of the Jean Monnet Chair is focused on the following points.

LUCIS affiliated members are researchers outside Leiden University who are actively involved in the study of Islam and/or Muslim societies and who regularly participate in LUCIS activities. LUCIS affiliate membership offers possibilities to cooperate with LUCIS as well as network opportunities. Contact…

AI has huge societal and economic potential and is widely used. But it also brings challenges: how do we combine human values with AI, how do we make AI more transparent and understandable, and what can AI and human cognition learn from each other, for example about language learning?

Would you like to create an extra challenge for yourself? Leiden University gives you plenty of room to do so.

Molecules are extremely hard to see in visible light, especially without using fluorescence. Leiden physicists have now made their optical technique sensitive enough to image the molecules of their interest in all sizes. Publication in Nanoletters.

Is it possible to measure subtle oscillations caused by dark matter moving through the earth? A Dutch-American physicist team have discovered a new route toward what could be the first-ever measurement of ultralight dark matter. They suspended a microscopic magnet inside a superconducting enclosure,…

Evidence-informed policy-making is crucial for good governance. Yet, despite the abundance of evidence from research and evaluation available to decision-makers, we know little about the actual influence of evidence on government policies. The ‘Power of Evidence’ (PoE) research programme, directed by…

Affective Computing (AC and sometimes called ‘Emotional AI’) provides opportunities to automatically process emotional data. However, is EU data protection law fit for purpose when it is applied to such AC approaches?

Affective Computing (AC and sometimes called ‘Emotional AI’) provides opportunities to automatically process emotional data. However, is EU data protection law fit for purpose when it is applied to such AC approaches?

When you become very good at one thing, that sometimes comes at the expense of something else. Such trade-offs also apply to bacteria. When becoming more resistant to one antibiotic, bacteria can sometimes become more sensitive to another. Linda Aulin, PhD candidate in the pharmacology group of Coen…

The research of Cathelijn Waaijer shows that scientific careers and especially their early part consist of a succession of short-term posts, or ‘quanta’; hence the title of the dissertation 'Quantized Careers'. PhD defence 24 November, 2016.

How do societies move forward with sustainable, effective and efficient management of Earth's water resources?

Increasingly, citizens are going to court to challenge decisions by the Public Prosecution Service not to prosecute in certain, sometimes socially sensitive, cases. Yet, these citizens are not always taken seriously as democratically engaged persons. A mistake, says Sophie Koning.

What if AI doesn’t just support engineers, but actually works alongside them? A large consortium, including Leiden University, gets 3.7 million euros. They will explore novel synergies between engineers and AI, in industrial engineering design areas such as automotive engineering.

When a bacterium becomes resistant to one antibiotic, it may sometimes become more sensitive to another. This biological side-effect offers an unexpected opportunity in the fight against antibiotic resistance.

Who can you contact for support and advice?

Tuberculosis causes 1.5 million deaths yearly and anti-tuberculosis therapies are threatened by emergence of drug resistance. Development of innovative drug combinations should be accelerated with the use of translational pharmacological models. Moreover, host-directed therapies (HDT), which stimulate…

Some examples of AI-research done at Leiden.

Exploring the intersection of environmental conservation, indigenous cultural expectations, and human-nonhuman relationships in the Eastern Himalayas. Developing inclusive approaches to ecological preservation through community-centered research.

This book underscores the interplay between religion and politics (local and global) in the production, escalation, management, mitigation, and resolution of conflict.

Democratic citizenship refers to the capacity and willingness of citizens to actively influence the functioning of state institutions. While considered a vital correlate of democratization and the rule of law, its largely western-oriented literature rarely studies the forms of democratic citizenship…

How do lipases in Mycobacterium tuberculosis help the bacteria survive, and can we target them to create new antibiotics?

The International Institute of Air and Space Law (IIASL) welcomes visiting researchers who would like to spend time with us furthering their (PhD) research. As a visiting researcher, you can make use of our extensive library, our digital resources and the expertise of the Law School’s institutes.

Leiden University offers ambitious students the latest knowledge and the freedom to develop their own area of expertise.

This project aims to design Principles and Guidelines to improve coordination between courts in Europe for insolvency and related proceedings.

This research cluster aims to analyse and interpret the formation and transmission of Graeco-Roman culture by exploring the relationships between cultural products (texts, objects, practices) and their societal and historical contexts.

In Renaissance Florence, humanists wrote Latin poems fashioning their city as the new Rome, and members of the Medici family as Roman rulers. How can we explain this practice?

We welcome visiting scholars whose research aligns with our diverse areas of expertise.

On the 14th December 2016, Steven L. Schwarcz, Stanley A. Star Professor of Law and Business at Duke University School of Law gave the thirteenth Hazelhoff Guest Lecture. Professor Schwarcz questioned the often-heard assumption that systemically important financial institutions engage in excessive…

In dit unieke uitwisselingsinitiatief volgen studenten van de Faculteit Rechtsgeleerdheid samen met gedetineerde personen een vak, binnen de muren van de gevangenis.

Leiden has a long history in the treatment of blood cell cancer. Research to find better therapies never stands still. One of the potential treatments currently being worked on is a ‘living medicine’.

The Leiden University Graduate School of Humanities promotes the quality of our PhD candidates' selection, supervision, assessment, and training. Together with the Faculty institutes, the Graduate School of Humanities provides the organisational infrastructure within which PhD candidates participate…

docARTES is a doctoral programme for performers and composers. It offers a unique environment for critical reflection on musical practice.

In what way is constructivist logic able to account for both the role of the judging agent in inference and the universal claims of logical validity?