International Women's Day (8 March) saw the announcement of the first Leiden Top 50: fifty Leiden women who have made a difference over the past year through their activities. Many of the women in the list are affiliated with our University.

Welcome to Leiden and The Hague! So there you are, an international BA or MA student, in a city where you don’t know the way and don’t speak the language. What now? Don’t panic: with our international introduction programmes, you’ll soon have learnt all the ins and outs. And another important thing:…

The amended Intelligence and Security Services Act (WiV) enacts a fundamental change in the relationship between the security services and politics. This carries the risk of politicisation of information, according to Professor Paul Abels. Inaugural lecture on 16 February.

In July, 2018, the Institute of Biology Leiden hosted the 11th conference of the Zebrafish Disease Models Society (ZDMS), an international association dedicated to the advancement of basic and clinical research using zebrafish disease models. More than 350 researchers from all over the world gathered…

A coronavirus booster shot provides a better immune response against COVID-19 than a single vaccine dose. mRNA boosters are the most effective upon receiving Janssen. These are the results of a collaborative study between several organisations, including the Leiden University Medical Center (LUMC).…

Some thirty Leiden students balanced on SUP boards for the Supping for Sustainability Lustrum activity. Together with alumnus Merijn Tinga, better known as the Plastic Soup Surfer, they paddled their boards through the Leiden canals and waterways, fishing plastic waste out of the water.

The first global safety summit on Artificial Intelligence is a fact. Prime Minister Sunak organised the conference because he believes that the issues related to AI can only be dealt with by governments. But the real issue with AI remained undiscussed at the summit, Reijer Passchier claims in Dutch…

The percentage of female professors at Leiden University has risen to 31.2 per cent. These are the results of the Women Professors Monitor 2021 published by the Dutch Network of Women Professors (LNVH). This puts Leiden University above the national average of 26.7 per cent.

On Thursday, 11 May 2017, Nobuo Hayashi will defend his PhD dissertation entitled “Military Necessity” at Leiden University’s Academy Building (Rapenburg 73). He will argue that military necessity denotes normative indifference in international law.

It’s starting to become a real Dies Natalis tradition: on 8 February professors from Leiden University teach a class at primary schools in the region. This introduces children to academia and teaches them more about conducting research. ‘Had you expected me to be a woman?’

Scientists of the faculty of Governance and Global Affairs research completely different subject, among which terrorism, cybercrime and migration. In the upcoming weeks we will give the floor to several of our very best researchers. In this episode: development researcher David Ehrhardt.

Prof. Zangenberg came to Leiden in 2006 as Professor for New Testament and Early Christian Literature and is now Chair for the History and Culture of Ancient Judaism and Early Christianity.

Face masks and gloves designed to protect us are, in fact, dangerous for the animals around us. Scientists from Leiden warn that throughout the world, on land and in the water, animals are ingesting corona waste, or getting entangled in it. The two biologists are asking for everybody’s help to better…

Due to the corona crisis, they had to switch to online education halfway during their course: associate professor Marcel Schaaf and PhD candidate Michiel Hooykaas of the Institute of Biology Leiden talk about digital practicals, online lectures and their biggest obstacle: exams.

On 8 October, the Independent Expert, Prof. Manfred Nowak, leading the UN Global Study on Children Deprived of Liberty presented his report to the UN General Assembly. The presentation of the final report is set for 19 November 2019, at the occasion of the 30th anniversary of the UN Convention on the…

How are you doing in these strange and unprecedented times? That’s the question we are asking our colleagues in this series. Jasmijn Mioch, for instance, HRM Learning & Development Adviser.

Seven master’s students had lunch in the characteristic Humanities Faculty Room with Faculty Board members Mirjam de Baar (vice dean) and Aurelie van ’t Slot (student board member) and gave feedback about their experiences at Leiden University.

An incredible quantity of archaeological reports are stored in digital archives. If you want to search for information in them, you have to do this manually. And that is a real chore. Archaeologist Alex Brandsen has now used deep learning, a form of artificial intelligence, to develop a search engine…

Have you already chosen your master’s? Visit our Master’s Open Day on 10 March and find out what Leiden University has to offer you. “By visiting the presentation and talking to students and tutors at the Information Market we’re hoping to learn more about the content of the degree as well as job pr…

Two of our colleagues received a royal decoration. Professor Jo Hermans became “Ridder in de Orde van Oranje Nassau”, and Professor Jan Schmidt became “Officier in de Orde van Oranje Nassau”. They receive the decoration as an acknowledgement for their extraordinary and selfless contribution to others…

The Van Bergen Fund aims to promote contacts between Dutch and international students in order to achieve a better understanding of each other's cultures. At the Symposium for Diversity and Inclusion the two winners of the Van Bergen Award 2015 were announced.

Leiden University Centre for Digital Humanities (LUCDH) has had a new director since 1 February. Associate Professor Angus Mol wants to connect people and knowledge in his new role.

Successfully completing a master’s thesis in Political Science is no small feat. Not only is this for most students the most extensive and in-depth research report they have ever written, the work is also held to very high standards. Yet, every year students manage to impress their instructors and demonstrate…

On Thursday 3 November Leiden University will celebrate the official opening of two wall formulas in the city centre. As of now, Snell’s law and the Lorentz force formula shine on two walls in the heart of Leiden. They are part of a project to display at least ten groundbreaking formulas with a Leiden…

Computer scientists from Leiden University and the University of Münster describe a new theoretical starting point for approaching difficult optimization problems. They can take into account several criteria simultaneously, instead of just one at a time.

De Universiteit Leiden is al 25 jaar stevig geworteld in Den Haag. Dat werd zichtbaar tijdens de feestelijke bijeenkomst rondom de foto-expositie Universiteit Leiden in Den Haag: Onderzoekers van de stad.

On August 27 – 31 2019, PhD candidate Maria Vasile participated in the IUAES 2019 Inter- congress in Poznan, Poland entitled "World Solidarities" and shares some of the insights from presentations she attended and found particularly relevant to the Food Citizens project.

During Pinochet’s dictatorship (1973-1990) numerous left-wing Chileans fled to Europe. In exile some of their political views became more moderate. Mariana Perry defended her PhD about this topic in September.

The right student in the right place. That is what LIACS programme director Frank Takes and education coordinator Joyce Glerum are aiming to do with the ‘Wisselstroom’ project. By next year, they hope to have a standardised protocol that will make it easier for computer science students to transfer…

Leiden researcher Dr Ben Zonneveld has determined the size of the genome - the amount of DNA per nucleus - of wild tulips. His conclusion is that there are more than 87 wild species. Various possibly new species have been discovered.

Chemist Gerjan de Bruin has designed a method of slowing down the degradation process of proteins in cells. This may contribute to new cancer medicines with fewer side-effects. PhD defence on 1 June.

Research is at the heart of a solid security policy. That’s why researchers from Leiden are analysing the motives of radicalised people and the biggest risks surrounding digital activity. Read more about their work in the research dossier ‘Security and Threat’.

An event where students came together to discuss the impact of AI on healthcare. Jurren de Groot and Yuxuan Zhu, master's students in Artificial Intelligence, took up the debate. They participated in SimuVaction, an event that brings students worldwide together in Atlanta to simulate an initiative of…

‘Make use of us!’ This is what the collaborating universities of Rotterdam, Delft and Leiden have to say to administrators and policymakers. And the call has not fallen on deaf ears, says Marja van Bijsterveldt, the Mayor of Delft. ‘Now more than ever we can use knowledge to solve societal issues in…

Our solar system probably evolved in the same way as most of the other planetary systems around us. This has been shown by German-Austrian-Dutch research on more than 870 planet-forming disks in the Orion cloud A. The five researchers, including three from the Leiden Observatory, published their findings…

Few details, relatively few words. The coalition agreement presented is one of the shortest in the past 20 years, Arco Timmermans knows. Consequently, the outlines were not negotiated for very long, which has its advantages and disadvantages. 'Over the next few weeks, we are mainly going to see the…

A circular economy in which all resources are reused is a prerequisite for a sustainable world. As EU president, the Netherlands can give a firm impetus to this economic shift. This is the message of Leiden Professor of Industrial Ecology, Arnold Tukker, in his inaugural lecture on 26 February.

‘We can see further than the end of our noses.’ This is what the presidents of the three Zuid-Holland universities in the LDE Alliance say in ScienceGuide. Leiden University, Delft University of Technology and Erasmus University Rotterdam have been working together within the LDE Alliance for seven…

The Event Horizon Telescope (EHT) collaboration receives the 2021 Royal Astronomical Society Group Achievement Award. In April 2019, the EHT team presented the first-ever photograph of the shadow of a black hole. Leiden professor Huib-Jan van de Langevelde has been director of EHT since last year. Three…

It is the end of your archaeological research project, and you may be wondering where to deposit your data. After the excavation, all of the finds are drawn, scanned, digitised, and the database is completed. Perhaps you have also accumulated a lot of data through further scientific analysis of the…

Sophia Hendrikx started her PhD project at LUCAS in March 2015...

On 12 and 13 September 2019, the Institute of Tax Law and Economics from Leiden University hosted 29 PhD researchers from around the world to engage into collective discussions at the Multilateral Cooperation in International Tax Law seminar.

A team including staff from Leiden University won the Open Initiative Trophy on 11 February, a prize for the best open science initiative in the Netherlands. The winners developed Reprohak, a hackathon-like event where participants repeat research to see whether the results were reproducible.

What is it like to be old? Many young people cannot really imagine what it is like. For a group of Honours students, however, this question has been answered. They had the chance to wear an age simulation suit during the Bachelor Honours Class ‘Vitality and Ageing’.

Young children who are less empathetic than their peers are more likely to be aggressive when older. This is what Malou Noten concludes in her dissertation. PhD defence on 25 November.

The origins of Surinamese rice, a digital twin of the Earth and a large big-data project in the Chilean sky: three Leiden scientists receive an ENW-KLEIN grant for innovative, fundamental research.

Medicines do not follow the one size fits all principle, because genetic differences can influence their efficiency. That is what research by PhD candidate Julia Hillger shows. She defends her PhD dissertation Take it Personal on Thursday 7 December.

17 November is International Student’s Day, dedicated to showcasing the international experience of international students in the Netherlands.

On 26 November 1940 Professor Cleveringa held his courageous speech protesting against the dismissal of his Jewish colleague, Professor Meijers. Cleveringa was arrested and the university was closed. Every year the university honours Cleveringa with a chair and meetings throughout the world.

The Leiden Summer School in Language and Linguistics is visited every year by many scholars worldwide. Four of the 120 participants of the 7th Summer School in 2012, share their view of Leiden.