Governments are increasingly cracking down on tech companies like X, Telegram and Clearview that flout the law, with a fine, ban or criminal prosecution. In practice, however, this has little effect. A tougher stance is needed, argues Bart Custers, Professor of Law and Data Science at eLaw – Center…

The Public Prosecutor's Office (OM) and the Netherlands Forensic Institute (NFI) want to use private DNA databases for genealogical research in criminal investigations. The method could be used in serious criminal cases that have stalled and it is already being used in investigations abroad. Whether…

Professor of Privacy and Cybercrime Bart Schermer researches the relationship between new digital technologies, enforcement and human rights. What cybercrime trends can he see that are relevant to an organisation like Leiden University?

In consultation with the Executive Board of the Faculty of Social and Behavioural Sciences and having heard the views of the Faculty Council, the Executive Board has appointed Bart Barendregt as Dean of the Faculty until 1 April 2027.

The Executive Board has reappointed Professor of Algebra and Number Theory Bart de Smit as vice-dean at the Faculty of Science. De Smit had already held this position since the beginning of 2019. His term has been extended by four years until the end of 2026.

Tech giants such as Google, Apple, and Microsoft are increasingly shaping the digital world we live in. Reijer Passchier cautions: 'Urgent measures are needed to curb this influence.'

Legal philosopher Bart Jansen teaches at universities around the world. In an interview two years ago, he spoke about his professional fascination for dictators and wars. Since then, the world has undergone major changes. High time for a follow-up interview.

Stilzitten doet alumnus Bart Jansen niet graag. Zo geeft hij les in onder meer Nederland, Maleisië en Curaçao, houdt hij zich naast het recht ook graag bezig met kunst en mystiek en vindt hij naar eigen zeggen ‘alles wat fout gaat’ wel interessant aan de rechtsfilosofie. ‘Ik ben gek op veelzijdige mensen;…

Last Saturday, Reijer Passchier was a guest on one of his favourite radio programmes: Dr. Kelder en Co.

Bart Barendregt receives a Vici grant of 1.5 million euros from the NWO for his research project 'One between the Zeros, an Anthropology of Artificial Intelligence in Islam'.

Is the child benefits scandal an omen for the future and will people’s lives soon be fully dominated by algorithms? Assistant Professor of Constitutional and Administrative Law Reijer Passchier warns that the encroaching digitalisation is giving the executive branch even more power, leaving parliament…

Researchers at eLaw contribute to groundbreaking volume on AI in radiology, offering legal and ethical frameworks, governance models, and solutions for responsible clinical integration.

Depression and anxiety disorders among youth are causing major problems worldwide. The mechanisms involved are still unknown, however. Moji Aghajani – Assistant Professor at the Institute of Education and Child Studies - aims to provide new insights with his research "Youth mental health meets big data…

Chinese State-backed entities have taken tiny stakes in parts of two Alibaba subsidiaries that oversee a video platform and web browser. Professor Rogier Creemers argues on CNBC this move is part of a larger plan for tech regulation.

Two projects from Leiden University have been awarded a grant through the programme.

Hoe kijken Nederlandse bedrijven naar online prijsdiscriminatie? Kimia Heidary, Bart Custers, Helen Pluut en Jean-Pierre van der Rest schreven hier een artikel over.

Are you thinking of applying for a Kiem grant but still tinkering with your idea for an interdisciplinary project? Let your Leiden colleagues inspire you! Dario Fazzi successfully applied for a Kiem grant with his workshop ‘Understanding the threat of the Anthropocene’.

A gold carpet welcomed students, staff and curious locals into Spui Campus on Monday 2 February. The V&D department store has been transformed into a unique open knowledge centre.

Henk Hoekstra and Alessandra Silvestri work on the astronomy and theoretical physics in the Euclid mission. These Dutch researchers are part of the mission.

The discovery of a planet far too large for its sun defies models about the formation of solar systems and planets. In a paper in Science, researchers, including Yamila Miguel of Leiden Observatory, report the discovery of a planet more than 13 times heavier than Earth orbiting the ultracool dwarf star…

Teacher training should do more to prepare teachers for the pedagogical aspects of teaching, Professor of Educational Sciences Tim Mainhard will argue in his inaugural lecture. ‘Children who find learning difficult particularly benefit from a close relationship with their teacher.’

How should we organise interdisciplinary work within Leiden University? This was the key question at a symposium organised by the Liveable Planet interdisciplinary research programme. Radical ideas, like getting rid of the faculties, came up for discussion.

The university's CO2 footprint - a visual representation of Leiden University's environmental impact - is calculated every year. The CO2 footprint for 2020 shows a striking break in the trend in terms of energy use, mobility and waste.

Leiden researchers, led by Sebastian Pomplun developed a new method to screen hundreds of thousands of molecules for drug discovery, using mass spectrometry instead of DNA tags. ‘We wanted to make drug discovery faster and more accessible.’

In the spring of 2024 the Faculty of Archaeology welcomed a new postdoc. Dr Adam Benfer, originally from the United States, occupies a double position as a researcher in the project of Alex Geurds and as the Faculty’s Data Steward. ‘It is pretty much what the title says: I steward data. Essentially,…

Marieke Adriaanse is Professor of Behavioural Interventions in Population Health and researches behavioural science issues in health. She advocates for better interdisciplinary collaboration and a new form of recognition and rewards within academia. ‘We have to stop being so blinkered,’ she says in…

Freezers set three degrees higher, a recycling bin for plastic petri dishes or timer switches installed on equipment: a growing number of Leiden University laboratories are taking small – but effective – steps to reduce their environmental impact, via the internationally recognized Laboratory Efficiency…

For thousands of years, beavers had a big influence on the Dutch ecosystem and the people that lived there. This is the conclusion of research by archaeologist Nathalie Brusgaard.

Whereas most outgoing professors are offered a congress, Nico Kaptein's former students and PhD students took a bigger approach. They treated him not only to a farewell congress, but also to a two-week tour of Indonesia, filled with lectures, and trips.

From towering mechanical heroes to city-destroying battles, giant robots have become one of the most iconic images in Japanese animation. On 28 April 2026, Leiden University will host "Giant Robots, Big Ideas", an afternoon event exploring how these spectacular machines reflect deeper questions about…

Physicists from Leiden University wrote the script and ensured that every experiment in the performance was scientifically accurate. The kickoff of the major educational project of the Amsterdam Light Festival was a huge success — and there’s much more to come.

Humans are increasingly losing agency on social media. A team of legal scholars from Leiden University, computer scientists from other universities and civil society organisations, is conducting a study into the balance of power between Big Tech and users.

‘We’re going to see each other again on campus. We’re so pleased, but we do have to say safe.’ Rector Magnificus Hester Bijl is looking ahead to the new academic year, which begins on 6 September. No more 1.5m distancing, but we do have to take responsibility for other people’s safety.

PhD defence

With her background in Cultural Anthropology and Development Sociology, Leonie Siepmans brings a unique perspective to the corporate world. Find out what an anthropologist does in a big company.

NWO (the Dutch Research Council) has granted more than 10 million euros for five human-centered AI research projects (2.1M€ each). Leiden University participates in two of these five research proposals, which are called ELSA labs.