Anthropologist Rodrigo Ochigame studies how AI is changing the practice of scientific research. From astrophysics to mathematics to climate science, they find that the adoption of new AI models is raising questions about what counts as reliable scientific evidence.

The excuses for the slavery past? It would have been better if the cabinet had taken some more time on that, thinks university lecturer and Atlantic slavery expert Karwan Fatah-Black. 'Too bad they didn’t wait for the results of the study.'

Organisation

Minuscule elementary particles from space colliding with Earth can give us an insight into the distant objects they come from. But first, you need to know how to catch them. With a Vidi grant from NWO, researcher Sjoert van Velzen will 'hunt' for neutrinos coming from exploding black holes.

The Pieter de la Court building will be given a new name. This was decided by the university's Executive Board in the summer of 2025, at the request of the FSW Faculty Board. The name will no longer be used for our faculty's main building or the student medal.

The Mapping Slavery project will place markers that tell the story of Leiden’s slavery past. Why is this important and what does it mean for today’s society? Before the markers are placed, a panel came together on 24 March to discuss the slavery past of not only the city but the University too.

Ijeoma Uchegbu is Professor of Pharmacy at University College London (UCL). As a female scientist of colour, she was initially reluctant to play an active role in the university’s diversity policy. Until, that is, she had a radical change of heart: ‘I knew it; I had to become an evangelist.'

The Caribbean as we know it today is fundamentally a product of colonial activity and globalisation. Practically everyone that inhabits the Caribbean has ancestors from different continents due to colonial activity, which profoundly affects the area to this day. Caribbean writers, both in the Caribbean…

Salt crystals, a nano-sized golf stick and molten glass. The LION Image Award competition of 2023 yielded a lot of beautiful images once again. But in the end, only one can be the winner.

When the PhD research has been completed and the dissertation is (nearly) finished, there are several more steps to take before you can defend it. For example, you must submit your manuscript and make preparations for the PhD defence ceremony.

Library

Organisation

Due to an exception in the law, domestic workers employed by private persons cannot automatially benefit from social security schemes. Home help Carol Kollmann did not agree with this and took her case to court.

A safe place to discuss burning social issues such as racism with each other. The student workspace Space to Talk About Race and the Afro Student Association both meet this need and also organise many other activities. Three board members explain why this is necessary.

Cultural Anthropologist Jasmijn Rana argues in the opinion piece ''Black', 'white', or 'of colour' is not about purity' in the Leiden University Weekly Mare to use uneasiness about being reduced to skin colour and gender to fight racism.

Buying chocolates as a sign of love, getting the best deals on Black Friday and putting on a spooky costume for Halloween. In recent years, these holidays and traditions have taken off in the Netherlands, even though they originated on the other side of the ocean. Why are we so excited about American…

The jury of the Africa Thesis Award is delighted to announce that the 2024 prize has been awarded to Baleseng Maeneche, a graduate of the Faculty of Arts & Humanities at the University of the Western Cape, for her thesis 'Media Representations of Male Perpetrators of Violence against Women and Children:…

If you work at home on a structural basis – at least one day a week – and you have an employment contract for 19 hours or more, you can request facilities for working from home

Conference

A research team from Radboud University and Leiden University, led by senior researchers Prof. Masja van Meeteren (RU/UL), Dr Paul Mutsaers (RU) and Prof. Maartje van der Woude (UL), will examine what national and international research has really found about ethnic profiling by the police.

Bachelor's students Kirsten S. Barink, Milène van der Geest, Claire van den Helder and Pim L. Ruhe are granted the Speckmann award for their Fieldwork NL report 'If it would have been a colour it would be pitch-black', a report on people suffering from the phenomenon of 'Electrohypersensitivity'.

An international collaboration of astronomers is organising a special online lecture series for physicists and astronomers in Cuba. The reason for this is the tightening of measures against this country, as a result of which researchers can hardly get any information from outside the island. ‘Everyone…

A European team of astronomers, led by Leiden-based researcher Konstantinos Migkas, has uncovered a large filament — a long, thread-like structure — of hot gas connecting four clusters of galaxies. This filament is made up of what scientists call the warm-hot intergalactic medium.

Assistant professor Stephanie Noach has won the Dissertation Prize of the Praemium Erasmianum Foundation. She is receiving this prestigious prize for her research on darkness in contemporary art from Latin America and the Caribbean.

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…

‘Culture change takes time,’ said Vice-Rector Hester Bijl at the closing panel of the University’s Diversity Symposium on 26 January. She talked about the road to a diverse and inclusive university. The symposium provided plenty of concrete examples of small steps that can already be taken.

Most of us know that Venice, Genoa, and Florence were major Mediterranean powers during the Renaissance. But did you know that in terms of trade and sea power, Barcelona was probably more powerful than two of these three?

When Dutch citizens request information under the Open Government Act (Woo), third parties can ask the public authority to withhold certain information. Leiden research reveals that the position of these third parties is unclear and accessing information is a difficult process.

Human cells are protecting their proteins from unfolding and aggregating. That's what biophysicist Alireza Mashaghi and his team discovered after seven years of in-depth research into the folding mechanisms of proteins. With an unprecedented approach, the team was able to study the folding of a single…

Eight scientists from Leiden University have been awarded a grant by the Dutch Research Council (NWO). With this Vidi funding, the researchers can set up an innovative line of research and further expand their own research group over the next five years.

Three Dutch-Belgian telescopes have started operating at the ESO La Silla Observatory in Chile. This so-called BlackGEM array will scan the southern sky to hunt for cosmic events that produce gravitational waves, such as mergers of neutron stars and black holes. Leiden astronomer Rudolf le Poole is…

An X-ray scanner, some small metal balls, and a newly developed algorithm. That is all you need to make a 3D model that enables you to look inside art objects without dismantling them. Thanks to the research of Francien Bossema (Centrum Wiskunde & Informatica and Leiden Institute of Advanced Computer…

After almost 18 months of following lectures alone in their rooms, many students are going back to face-to-face classes for the first time. And the same is true for the lecturers. How do people feel about it? We went to Leiden Law School to find out. ‘For a whole year, I’ve been watching lectures in…

Leiden University Libraries holds an internationally unique collection of unofficial poetry from China. Produced outside the System over the last fifty years or so, this poetry is hugely influential yet hard to find beyond the informal networks through which it travels. To address this paradox, the…

Research into depression in children, Leiden alumni in the Dutch House of Representatives and an exceptional achievement by one of our students: what do this topics have in common? They are among our most read stories of 2021.

Developing new drugs is a difficult process. With the aid of artificial intelligence, Pharmaceutical scientist Xuhan Liu has developed methods that can help make drug design cheaper and faster. PhD defence on 15 February.

The winner of the Africa Thesis Award 2023 is Rachel Dubale, a graduate from the Research Master in African Studies at Leiden University, with her thesis “They think we can eat the condominium”. Chronicles of Economic, Social and Political Practices in Addis Ababa’s Condominiums.

Social

On December 4, 2024, Prof. dr. Sarah Cramsey gave a short lecture before a film at the Czechoslovak New Wave Film Festival in Rotterdam. The festival was expertly organized by Ms. Hana Schenkova, the Director of the Czech Centre in Rotterdam, and featured more than a dozen films from Czechoslovakia…

The British Academy appointed Eveline Crone as a Corresponding Fellow to recognise her contribution to the SHAPE themes - the social sciences, humanities and the arts. The British Academy is the national academy for social sciences and humanities in the United Kingdom. Besides Crone, 83 other Fellows…

Stéphanie Noach, PhD within LUCAS, received a Fulbright grant to conduct research for her PhD project 'Dark Matters. Recasting Darkness with Contemporary Latin American Art' at the Afro-Latin American Research Institute at Harvard University.

In Europe, citizens have a right of access to government information. The European Commission, however, has various methods to prevent this. For example, destroying all e-mails, invoking state security and protection of privacy, and not taking minutes. As a result, it is almost impossible to review…

We should mention differences in skin colour to our children because only then can we talk openly about prejudice and racism – and how to prevent them. This is what Professor Judi Mesman says in her book ‘Opgroeien in kleur’ (Growing up in Colour), which offers advice to parents. ‘Why is there only…

What causes depression in a child and how can they get over it? Leiden Professor of Psychology Bernet Elzinga and behavioural scientist Carine Kielstra recently hosted a webinar on the subject of depression in teenagers. The level of interest was overwhelming.

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…

The Dutch Ministry of Finance says that new rules have significantly reduced tax avoidance via 'transit country' the Netherlands. Jan Vleggeert, Professor of Tax Law, has voiced his reservations about this claim in the media.

How does astronomy benefit you? The new single-episode podcast Cosmic Perspectives explores the impact of Dutch astronomy on society: from building positive international relationships to the transfer of life-changing technology.

In an essay published in three prominent European newspapers, Professor Luuk van Middelaar takes a close look at Europe’s role in the Russian invasion of Ukraine. ‘Europe shows plenty of political energy, but what is still lacking is strategic cool-headedness, in facing a nuclear power.’

Scientists have detected a neutrino with the highest energy ever measured. Leiden physicists Maarten de Jong and Dorothea Samtleben were involved in this project, which was widely covered in newspapers and online media last week.

Carola Schoor, programme manager for Public Affairs at the Centre for Professional Learning (CPL), reflects on Politico on the State of the European Union speech by Commission President Ursula von der Leyen from a political strategy and messaging perspective.